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engine rebuild questions



 
 
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  #11  
Old August 26th 06, 07:20 PM posted to rec.autos.makers.saturn
Lane
external usenet poster
 
Posts: 116
Default engine rebuild questions

> This car blew oil from day one. Everything is telling me that this 120k
> mileage auto that has had oil problems from the get go and is gotten
> considerably worse since is in need of some serious rebuild work now or
> it's going to really fail altogether


I've owned my Saturn for over 13 years. I've been reading this forum for
almost that long, and have been involved in my car club for almost ten. Of
all the people I've known and still know that burn oil, I don't recall any
of them that have had a motor failure. I don't know that I'd make the same
assumption that you are - that if an engine consumes a lot of oil, it is an
indicator of worse things to come. That is not necessarily so with these
motors. These motors are stronger than most people think, even in an
oil-burning state. Just make sure the oil level is checked often and stays
topped off.

What I DO know from reading is that many people who have torn into their
engines as an attempt to cure oil consumption are not always successful. If
that is a trait inerent in the design (my '94 used a quart between changes
since new), rebuilding to factory specs probably won't give any guarantees.

I've never rebuilt a motor and probably won't. Weighing that option against
buying a low-mileage used motor makes it not very cost-effective. For parts
and machining, a rebuild may run $1500 or so. The last motor I bought was
off of eBay. With 19k on it, it was around $200. If you have some
patience, it is worth watching for deals out there because I do see them
come and go. I've bought three used motors this way with low mileage on
them, and was very satisfied with all of them. In fact, one of them is
currently in my race car and just can't be killed.

BUT, if you're looking to do a rebuild because you want to be hands-on, do
most if it yourself, and learn as you go... well, that's a different story.
But time and cost will still be a factor.

If you're not able to wait for one to come along on eBay for a very low
price, local salvage yards will probably have offerings for a bit more
money. But, they will still be cheaper than a rebuild, in both money and
time.

> I can tell it's really not well anymore.


Did I miss something in this thread? Besides the compression difference and
oil consumption, what are the symptoms that make you think it's not well?

Lane [ lane (at) evilplastic.com ]
---
Visit my Saturn Car Audio and Performance Page at http://www.evilplastic.com


"CBrooks" > wrote in message
...
> Private wrote:
>
>> "BläBlä" . S!RCRE4P.C0M>
>> wrote in message
>> ...
>>
>>>In article <B6GHg.468697$IK3.446143@pd7tw1no>, er
>>>says...
>>>
>>>>
>>>>180 psi doesn't seem like bad compression to me, what are the
>>>>compression
>>>>readings on all the cylinders? What are all the readings dry? and after
>>>>adding oil through the plug openings to seal the rings? Have you done a
>>>>compression leak down test? Dry and with oil added? Can you hear air
>>>>leakage into intake or exhaust manifolds? Do any of the plugs indicate
>>>>more
>>>>oil fouling than the others? Have you tried any of the chemical ring
>>>>cleaning procedures? Have you used a borescope to check the condition
>>>>of
>>>>the cylinder walls?
>>>
>>>Compression should be taken while hot btw.
>>>
>>>Normal compression is 185-205 psi
>>>Minimum is 180 psi
>>>
>>>I still wouldnt bother taking that engine appart until ALL other methods
>>>are exhausted to reduce consuption. Hardly worth while IMO.

>>
>>
>> I agree.
>>
>> IMHE there is a lot of variation between individual compression gauges
>> and they are not what we would call 'calibrated'. Similarly there is a
>> lot of variability due to the procedure used, and as you say, the motor
>> should ideally be at operating temp, but the maximum compression obtained
>> will still vary depending on outside air temp and altitude (density
>> altitude for any pilots) and humidity and condition of starter and
>> battery and whether all other plugs are removed and throttle position and
>> oiled or non oiled cylinders. The number of strokes to pump to max is
>> also another important and variable indicator. There are also other
>> factors that may confuse a compression test like a plugged air filter or
>> catalytic converter or loose muffler baffle.
>>
>> IMHO compression readings should be considered relative to each other and
>> relative to other indicators like oil consumption rates and plug fouling
>> and evidence of blowby like dirty PCV valves and dirty engine internal
>> (and often external & underhood). They can be a good indicator for valve
>> problems but are not a very good indicator of ring condition and often an
>> engine with seized oil control rings will give great test results due to
>> the amount of oil on the cylinder walls and compression rings.
>>
>> As always, YMMV

> This car blew oil from day one. Everything is telling me that this 120k
> mileage auto that has had oil problems from the get go and is gotten
> considerably worse since is in need of some serious rebuild work now or
> it's going to really fail altogether and there I'll be, with a nearly
> worthless vehicle. By getting the work done now, maybe the cost will be
> less than I fear and will be able to drive a solid and dependable car once
> again, and that gets great gas mileage compared to others. I've driven
> this vehicle since early 1993 and I can tell it's really not well anymore.
> If I could afford another great gas mileage vehicle that would be
> guaranteed for at least 30k miles I'd do it if would be less than a
> rebuild on this one. Between a rock and a hard place.



Ads
  #12  
Old August 26th 06, 08:15 PM posted to rec.autos.makers.saturn
SnoMan
external usenet poster
 
Posts: 878
Default engine rebuild questions

On Sat, 26 Aug 2006 13:20:13 -0500, "Lane"
> wrote:

>I've owned my Saturn for over 13 years. I've been reading this forum for
>almost that long, and have been involved in my car club for almost ten. Of
>all the people I've known and still know that burn oil, I don't recall any
>of them that have had a motor failure. I don't know that I'd make the same
>assumption that you are - that if an engine consumes a lot of oil, it is an
>indicator of worse things to come. That is not necessarily so with these
>motors. These motors are stronger than most people think, even in an
>oil-burning state. Just make sure the oil level is checked often and stays
>topped off.


I fully agree. If you keep it full of clean oil is can run for a long
time. Bearing failure is different. When you get a rod knocking, your
time is a lot more limited. Bearings fails from dirty oil or lack of
it The biggest "danger" you face with a oil burner is letting it run
low on oil and then damaging the bearing. It can burn a lot of oil and
live as long as the crankcase is kept full.
-----------------
TheSnoMan.com
  #13  
Old August 26th 06, 09:47 PM posted to rec.autos.makers.saturn
CBrooks
external usenet poster
 
Posts: 18
Default engine rebuild questions

Joe wrote:
> "CBrooks" > wrote in message
> ...
>
>>Am considering options with a 93 dohc that has one #3 cylinder running
>>180psi. Engine has 120k and has the oil loss problems, 1 qt per 500 miles.
>>Am planning on doing an 'in-frame' rebuild with rings, hone, bearings,
>>timing set, oil pump, valve job & seals, clutch(maybe), water pump. Might
>>as well pull it, right?
>>
>>Anyway, questions I have a
>>1.) Where does one find a straight bar of steel in order to check the
>>'deck' & cylinder head for warpage?
>>
>>2.) Is there any ball park numbers of machining costs for a shop to repair
>>a cylinder head or bore cylinder sleeves as need be? Should valve guides
>>normally be replaced?
>>
>>3.) Are third party timing sets from ebay OK?

>
>
> I won't comment on #2 or #3, but a straight bar of steel can be purchased in
> the form of a metal ruler at Staples, OfficeMax, etc. If you want to get
> fancy, buy a ground rod or bar at www.mcmaster.com. Delivery is sometimes
> the same day from those folks. Just don't look around that site too much.
> They carry just about EVERYTHING at somewhat decent to not-so-decent
> prices - but make buying ANYTHING efficient and convenient.
>
> Joe in Northern, NJ - V#8013-R
>
> Currently Riding The "Mother Ship"
>
> Ride a motorcycle in or near NJ?
> http://tinyurl.com/5apkg
> http://www.youthelate.com
>

Thanks for the advice on the steel bar. Have a business guy next
door who can get stuff from McMasters. Didn't think of them,
actually am not thinking real great since seeing my auto in
trouble. He has an account with other similar companies as well.
  #14  
Old August 26th 06, 09:58 PM posted to rec.autos.makers.saturn
CBrooks
external usenet poster
 
Posts: 18
Default engine rebuild questions

Private wrote:

> "CBrooks" > wrote in message
> news >
>>Private wrote:
>>
>>>"SnoMan" > wrote in message
...
>>>
>>>
>>>>On Fri, 25 Aug 2006 05:22:45 GMT, CBrooks >
>>>>wrote:
>>>>
>>>>
>>>>
>>>>>Am considering options with a 93 dohc that has one #3 cylinder
>>>>>running 180psi. Engine has 120k and has the oil loss problems, 1
>>>>>qt per 500 miles. Am planning on doing an 'in-frame' rebuild
>>>>>with rings, hone, bearings, timing set, oil pump, valve job &
>>>>>seals, clutch(maybe), water pump. Might as well pull it, right?
>>>>>
>>>>>Anyway, questions I have a
>>>>>1.) Where does one find a straight bar of steel in order to
>>>>>check the 'deck' & cylinder head for warpage?
>>>>>
>>>>>2.) Is there any ball park numbers of machining costs for a shop
>>>>>to repair a cylinder head or bore cylinder sleeves as need be?
>>>>>Should valve guides normally be replaced?
>>>>>
>>>>>3.) Are third party timing sets from ebay OK?
>>>>
>>>>
>>>>On the head warpage I would take the head to a shop and have it
>>>>checked with you get a valve job done on it. On the oil consumption,
>>>>it is not realy that bad and if it runs well otherwise I would switch
>>>>to 10w30 in winter and maybe 15w40 (not 10w40) in summer and stop
>>>>using 5w30 you will likely cut oil consumption in half or more and get
>>>>more life ot of it. 5w30 will go through a worn engine pretty quick at
>>>>times. On more thing if you take this route, do change oil about every
>>>>2000 to 2500 miles or so as even though you are adding to it, it is
>>>>getting dirty faster and increasing wear potenail and oil consumption
>>>>too.
>>>>-----------------
>>>>TheSnoMan.com
>>>
>>>
>>>180 psi doesn't seem like bad compression to me, what are the compression
>>>readings on all the cylinders? What are all the readings dry? and after
>>>adding oil through the plug openings to seal the rings? Have you done a
>>>compression leak down test? Dry and with oil added? Can you hear air
>>>leakage into intake or exhaust manifolds? Do any of the plugs indicate
>>>more oil fouling than the others? Have you tried any of the chemical
>>>ring cleaning procedures? Have you used a borescope to check the
>>>condition of the cylinder walls?

>>
>>The psi readings were 215, 210,175, 205, from 1 to 4. Repeated #3 and it
>>went up to almost 180. This was a wet test.

>
>
> Do a dry test followed by a wet test. An increase when wet indicates ring
> leakage which is sealed by the added oil, most engines will show some
> increase when wet. If there is little change when wet then this indicates
> that the valves are the limiting factor. If the three good cylinders
> increase when wet but the low cylinder does not then this would be a good
> indication of a bad valve in that cylinder (or perhaps less likely, a gasket
> or similar problem). In the event that there is a scored #3 cylinder I
> would try that cylinder again after wetting with a heavy oil to see if that
> made any difference as a heavy oil may fill the score enough to raise the
> compression, but a borescope is better for this as you can also inspect the
> wall for crosshatch and the color of the wall between the top rings can
> indicate how effectively each ring is sealing.
>
> Based on what you have reported, I suspect a valve problem in #3. A
> leakdown test or even just applying shop air pressure to the cylinder (using
> an 'air hold' fitting in the plug hole, which can be purchased or fabricated
> from a spark plug by a welder) may allow you to hear leakage into the intake
> or exhaust manifold (or both).
>
> If the bad valve is on the intake side it may show as small rapid
> fluctuations in a vacuum gauge connected to the intake plenum but a burned
> valve is more likely on the exhaust side. which can sometimes be heard as a
> roughness or popping in the exhaust but this is doubtful as the sound must
> make it through the catalytic converter and the muffler..
>
> One of the downside of 4 valve engines is that they double your chances for
> valve and seal failure.
>
>
>>Haven't done a leak down test and cannot hear any air leakage. #3 plug,
>>when removed looked fouled compared to the other 3,( #1, #2, #4). Tried
>>MMO soak, & it didn't do it. Don't own or know anyone who has a borescope.

>
>
> Many aviation mechanics and repair shops have borescopes and would allow you
> to take a look inside if you pulled the plugs in their parking lot. (Offer
> money, lunch or case of good beer.)
>
>
>>>Always make a teardown and rebuild your final and NOT initial strategy.
>>>I do agree that IF it is necessary to remove the head, then a head
>>>rebuild and inframe ring job should probably be done. Your oil
>>>consumption problems MAY be due to worn valve SEALS which CAN be replaced
>>>without removing the head.
>>>
>>>I agree with SnoMan that your first strategy to deal with excessive
>>>consumption should be to try different oil viscosities, (and change your
>>>shifting techniques to a less 'spirited' driving style). I also agree
>>>with reducing oil change intervals on engines with higher consumption
>>>rates. If cost is a major factor (or the difficulty getting at the
>>>filter if you do not have any ramps) then it is better to only change the
>>>filter every second change rather than to extend the oil change.

>>
>>I am not a youngster and no spirited shifting is going on with my Saturn.
>>I would think that by biting the bullet now, the engine, ie block, may not
>>get totally destroyed and cost even more to replace/repair.

>
>
> I mean no dissrespect, but as a 1cam (2400 rpm sweet spot) owner I feel that
> many 2cam drivers use too high a shift point. I doubt that you are doing
> any serious damage to the engine IF the low compression is caused by valve
> leakage. A broken ring which is scoring the cylinder is another matter, but
> if that is the case the damage is probably done already and only a borescope
> will give you an answer. If the leakage is caused by a burned valve then it
> will probably continue to get worse and the compression will continue to
> drop.
>
> Only you can make your personal cost effectivness decision regarding repair
> and it depends to no small degree on your estimate of the remaining life of
> the rest of the car. You do not have a lot of miles on the unit but some
> would say it is getting a little old in years.
>
>
>>>I would continue babying this engine with oil and viscosity and driving
>>>style changes until engine removal is necessary for clutch replacement.
>>>You can do a much better (and easier, and very importantly cleaner)
>>>rebuild with the engine removed.

>>
>>I'm already babying this engine. The clutch is getting shaky at 120 k
>>miles, and I did allow someone to relearn to drive to get a license and
>>the learner couldn't get the hang of my manual shift Saturn.

>
>
> The neccesity of a clutch replacement makes the engine rebuild timing
> decision much easier. Once the engine is out of the car a ring and valve
> job does not seem like such a big additional expense.
>
>
>>>Re question #2, get local quotes for rebuild/valve job on your cylinder
>>>head from several automotive machine shops. They will normally check for
>>>warpage if asked, and will also check for valve stem/guide wear. Valve
>>>SEALS should always be replaced, your machine shop/rebuilder may have the
>>>equipment to install a better than OEM type of valve seal.
>>>

>>
>>What valve seals are better than OEM Saturns?

>
>
> AFAIK the OEM seals are of the rubber umbrella type. There is an
> aftermarket wiping lip type seal (which I believe was originally mfg by
> Perfect Circle and often called a PC valve seal) which requires machining
> the top of the valve guide for installation. I have used these seals on SBC
> but have no experience with Saturn head rebuilding. There are some
> experienced racers here and some may reply, or you may wish to search this
> group in Google groups or the forum at
> http://www.saturnfans.com/forums/search.php or
> http://www.saturnfans.com/forums/archive/index.php/
>
> Rebuilt valve guides do make an engine run very smoothly and IMHO this is
> worth doing right. Another downside of 4 valve engines is that the cost of
> a valve job doubles.
>
> You are doing the right thing by asking questions and doing a repair based
> on a well thought out plan.
>
> Good luck, YMMV
>
>

Thanks, a little good luck my way would be most welcome at this
point. I've looked a bit into perfect circle rings and perfect
seal rings too. Not sure if perfect seal rings are really for
Saturns. Either sounds better than what hastings rings do. I've
been reading a lot from saturnfans.com and turbosaturns.net
forums as well. They are helping me a lot in seeing what I'm up
against.
  #15  
Old August 26th 06, 10:26 PM posted to rec.autos.makers.saturn
CBrooks
external usenet poster
 
Posts: 18
Default engine rebuild questions

Lane wrote:

>>This car blew oil from day one. Everything is telling me that this 120k
>>mileage auto that has had oil problems from the get go and is gotten
>>considerably worse since is in need of some serious rebuild work now or
>>it's going to really fail altogether

>
>
> I've owned my Saturn for over 13 years. I've been reading this forum for
> almost that long, and have been involved in my car club for almost ten. Of
> all the people I've known and still know that burn oil, I don't recall any
> of them that have had a motor failure. I don't know that I'd make the same
> assumption that you are - that if an engine consumes a lot of oil, it is an
> indicator of worse things to come. That is not necessarily so with these
> motors. These motors are stronger than most people think, even in an
> oil-burning state. Just make sure the oil level is checked often and stays
> topped off.
>
> What I DO know from reading is that many people who have torn into their
> engines as an attempt to cure oil consumption are not always successful. If
> that is a trait inerent in the design (my '94 used a quart between changes
> since new), rebuilding to factory specs probably won't give any guarantees.
>
> I've never rebuilt a motor and probably won't. Weighing that option against
> buying a low-mileage used motor makes it not very cost-effective. For parts
> and machining, a rebuild may run $1500 or so. The last motor I bought was
> off of eBay. With 19k on it, it was around $200. If you have some
> patience, it is worth watching for deals out there because I do see them
> come and go. I've bought three used motors this way with low mileage on
> them, and was very satisfied with all of them. In fact, one of them is
> currently in my race car and just can't be killed.
>
> BUT, if you're looking to do a rebuild because you want to be hands-on, do
> most if it yourself, and learn as you go... well, that's a different story.
> But time and cost will still be a factor.
>
> If you're not able to wait for one to come along on eBay for a very low
> price, local salvage yards will probably have offerings for a bit more
> money. But, they will still be cheaper than a rebuild, in both money and
> time.
>
>
>>I can tell it's really not well anymore.

>
>
> Did I miss something in this thread? Besides the compression difference and
> oil consumption, what are the symptoms that make you think it's not well?
>
> Lane [ lane (at) evilplastic.com ]
> ---
> Visit my Saturn Car Audio and Performance Page at http://www.evilplastic.com
>
>


Loss of power going up hills, the smell of oil while driving it,
the #3 plug is now fouling quickly after being replaced with a
new plug, and the rate or amount of lost oil has increased. Used
to be 1 qt every 1000 miles. Again, I've looked high and low
from the local salvage yards and have not found any luck there.
One local yard told me they're not getting too much anymore by
way of Saturn's. Why that is, I don't know. 6thplanet is keeping
an eye open for me. I've been driving this for 13 years and just
recently it's simply not the way it ran from even a year ago. I
am not as experienced as you are but I do believe this engine is
failing. And I am a tad concerned about having to do this myself
for a lot of reasons. Getting another old engine may not be any
better than what I've got now and would not be guaranteed
either. Should a sound engine become available real soon that I
could afford, I'd probably go with it. Between a rock and a hard
place.
  #16  
Old August 27th 06, 01:32 AM posted to rec.autos.makers.saturn
Joe[_6_]
external usenet poster
 
Posts: 23
Default engine rebuild questions

>> I won't comment on #2 or #3, but a straight bar of steel can be purchased
>> in the form of a metal ruler at Staples, OfficeMax, etc. If you want to
>> get fancy, buy a ground rod or bar at www.mcmaster.com. Delivery is
>> sometimes the same day from those folks. Just don't look around that
>> site too much. They carry just about EVERYTHING at somewhat decent to
>> not-so-decent prices - but make buying ANYTHING efficient and convenient.
>>


CLIP

>>

> Thanks for the advice on the steel bar. Have a business guy next door who
> can get stuff from McMasters. Didn't think of them, actually am not
> thinking real great since seeing my auto in trouble. He has an account
> with other similar companies as well.


McMaster will deliver just about anything to anyone, anywhere in the US. No
need to have an account as long as you have a credit card.

Joe in Northern, NJ - V#8013-R

Currently Riding The "Mother Ship"

Ride a motorcycle in or near NJ?
http://tinyurl.com/5apkg
http://www.youthelate.com




  #17  
Old August 27th 06, 01:44 AM posted to rec.autos.makers.saturn
Private
external usenet poster
 
Posts: 145
Default engine rebuild questions


"SnoMan" > wrote in message
...
> On Sat, 26 Aug 2006 13:20:13 -0500, "Lane"
> > wrote:
>
>>I've owned my Saturn for over 13 years. I've been reading this forum for
>>almost that long, and have been involved in my car club for almost ten.
>>Of
>>all the people I've known and still know that burn oil, I don't recall any
>>of them that have had a motor failure. I don't know that I'd make the
>>same
>>assumption that you are - that if an engine consumes a lot of oil, it is
>>an
>>indicator of worse things to come. That is not necessarily so with these
>>motors. These motors are stronger than most people think, even in an
>>oil-burning state. Just make sure the oil level is checked often and
>>stays
>>topped off.

>
> I fully agree. If you keep it full of clean oil is can run for a long
> time. Bearing failure is different. When you get a rod knocking, your
> time is a lot more limited. Bearings fails from dirty oil or lack of
> it The biggest "danger" you face with a oil burner is letting it run
> low on oil and then damaging the bearing. It can burn a lot of oil and
> live as long as the crankcase is kept full.
> -----------------
> TheSnoMan.com


I fully agree with both Lane and SnoMan.

Of all the points raised in this thread SnoMan's is by far the most
important.

Nothing can turn a merely tired or sick motor into a catastrophic failure
(that is probably beyond economic repair) faster than running low on oil. I
have never seen an engine failure caused by a worn out dipstick.

Very very few engine failures are caused by mechanical or material failure,
most are caused by lack of oil or coolant.

Just my .02, YMMV


  #18  
Old August 27th 06, 07:14 AM posted to rec.autos.makers.saturn
CBrooks
external usenet poster
 
Posts: 18
Default engine rebuild questions

Private wrote:
> "SnoMan" > wrote in message
> ...
>
>>On Sat, 26 Aug 2006 13:20:13 -0500, "Lane"
> wrote:
>>
>>
>>>I've owned my Saturn for over 13 years. I've been reading this forum for
>>>almost that long, and have been involved in my car club for almost ten.
>>>Of
>>>all the people I've known and still know that burn oil, I don't recall any
>>>of them that have had a motor failure. I don't know that I'd make the
>>>same
>>>assumption that you are - that if an engine consumes a lot of oil, it is
>>>an
>>>indicator of worse things to come. That is not necessarily so with these
>>>motors. These motors are stronger than most people think, even in an
>>>oil-burning state. Just make sure the oil level is checked often and
>>>stays
>>>topped off.

>>
>>I fully agree. If you keep it full of clean oil is can run for a long
>>time. Bearing failure is different. When you get a rod knocking, your
>>time is a lot more limited. Bearings fails from dirty oil or lack of
>>it The biggest "danger" you face with a oil burner is letting it run
>>low on oil and then damaging the bearing. It can burn a lot of oil and
>>live as long as the crankcase is kept full.
>>-----------------
>>TheSnoMan.com

>
>
> I fully agree with both Lane and SnoMan.
>
> Of all the points raised in this thread SnoMan's is by far the most
> important.
>
> Nothing can turn a merely tired or sick motor into a catastrophic failure
> (that is probably beyond economic repair) faster than running low on oil. I
> have never seen an engine failure caused by a worn out dipstick.
>
> Very very few engine failures are caused by mechanical or material failure,
> most are caused by lack of oil or coolant.
>
> Just my .02, YMMV
>
>

I did not drive my car today. Yesterday I heard a new noise and
the engine, when I shut it off, sounded real strange and I could
hear something new while sitting in the driver seat. The oil
level is topped up. This is after doing a compression check the
day before. I had my buddy listen to it today while briefly
starting the car so he could hear what I was hearing and he
didn't like the sound of it either. Someone wrote and told me to
be patient for a $200 19k mileage dohc engine on ebay. Well,
show me the engine! I haven't seen a deal anywhere close to that
since I've been looking. If you found one for yourself, consider
yourself lucky. Half the freaking middle east oil has
disappeared going through this engine and if I can get this
fixed, I am going to try. If this fails, I'll get a freaking
short block.
  #19  
Old August 27th 06, 12:05 PM posted to rec.autos.makers.saturn
SnoMan
external usenet poster
 
Posts: 878
Default engine rebuild questions

On Sun, 27 Aug 2006 06:14:13 GMT, CBrooks >
wrote:


> Half the freaking middle east oil has
>disappeared going through this engine and if I can get this
>fixed, I am going to try. If this fails, I'll get a freaking
>short block.



I hope you have stopped using 5w30 because it will surely make it go
right through it. Try nursing it on 15w40 for a bit with a fresh
filter too.
-----------------
TheSnoMan.com
  #20  
Old August 30th 06, 04:18 AM posted to rec.autos.makers.saturn
Lane
external usenet poster
 
Posts: 116
Default engine rebuild questions

> Someone wrote and told me to be patient for a $200 19k mileage dohc engine
> on ebay. Well, show me the engine!


This reminds me of something related I recently read. When someone was told
that they needed to learn to be patient, they responded, "how long is that
gonna take?"

Lane [ lane (at) evilplastic.com ]
---
Visit my Saturn Car Audio and Performance Page at http://www.evilplastic.com


"CBrooks" > wrote in message
...
> Private wrote:
>> "SnoMan" > wrote in message
>> ...
>>
>>>On Sat, 26 Aug 2006 13:20:13 -0500, "Lane"
> wrote:
>>>
>>>
>>>>I've owned my Saturn for over 13 years. I've been reading this forum
>>>>for
>>>>almost that long, and have been involved in my car club for almost ten.
>>>>Of
>>>>all the people I've known and still know that burn oil, I don't recall
>>>>any
>>>>of them that have had a motor failure. I don't know that I'd make the
>>>>same
>>>>assumption that you are - that if an engine consumes a lot of oil, it is
>>>>an
>>>>indicator of worse things to come. That is not necessarily so with
>>>>these
>>>>motors. These motors are stronger than most people think, even in an
>>>>oil-burning state. Just make sure the oil level is checked often and
>>>>stays
>>>>topped off.
>>>
>>>I fully agree. If you keep it full of clean oil is can run for a long
>>>time. Bearing failure is different. When you get a rod knocking, your
>>>time is a lot more limited. Bearings fails from dirty oil or lack of
>>>it The biggest "danger" you face with a oil burner is letting it run
>>>low on oil and then damaging the bearing. It can burn a lot of oil and
>>>live as long as the crankcase is kept full.
>>>-----------------
>>>TheSnoMan.com

>>
>>
>> I fully agree with both Lane and SnoMan.
>>
>> Of all the points raised in this thread SnoMan's is by far the most
>> important.
>>
>> Nothing can turn a merely tired or sick motor into a catastrophic failure
>> (that is probably beyond economic repair) faster than running low on oil.
>> I have never seen an engine failure caused by a worn out dipstick.
>>
>> Very very few engine failures are caused by mechanical or material
>> failure, most are caused by lack of oil or coolant.
>>
>> Just my .02, YMMV

> I did not drive my car today. Yesterday I heard a new noise and the
> engine, when I shut it off, sounded real strange and I could hear
> something new while sitting in the driver seat. The oil level is topped
> up. This is after doing a compression check the day before. I had my buddy
> listen to it today while briefly starting the car so he could hear what I
> was hearing and he didn't like the sound of it either. Someone wrote and
> told me to be patient for a $200 19k mileage dohc engine on ebay. Well,
> show me the engine! I haven't seen a deal anywhere close to that since
> I've been looking. If you found one for yourself, consider yourself lucky.
> Half the freaking middle east oil has disappeared going through this
> engine and if I can get this fixed, I am going to try. If this fails, I'll
> get a freaking short block.



 




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