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#11
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Clutch advice
Lanny Chambers > wrote in
: > In article >, > "DucMan" > wrote: > >> No, no leaking apparent. I assume this would be something I'd >> see on the garage floor and not an internal leak. >> >> > Leaking rear main seal? > > I was thinking a small leak at the rear main seal might > contaminate your clutch without a visible drip. Isn't a leak from the transmission front seal much more likely to oil the clutch? |
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#12
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Clutch advice
Thats a possibility that I'll check out this weekend. Going to do the new
clutch anyway, assuming it arrives tomorrow. "XS11E" > wrote in message ... > Lanny Chambers > wrote in > : > >> In article >, >> "DucMan" > wrote: >> >>> No, no leaking apparent. I assume this would be something I'd >>> see on the garage floor and not an internal leak. >>> >>> > Leaking rear main seal? >> >> I was thinking a small leak at the rear main seal might >> contaminate your clutch without a visible drip. > > Isn't a leak from the transmission front seal much more likely to oil > the clutch? > |
#13
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Clutch advice
"Lanny Chambers" > wrote
> Leaking rear main seal? That was my thought when I read this. The rear (side?) main seal on my 1963 997 Mini-Cooper started leaking and would dump oil all over the clutch when hot, but the clutch would work just fine when the oil was cold or just warm. That rally in the Norfolk, Virginia area really pointed out the need for a new clutch AND rear main seal as I attempted passing cars with engine revs climbing but speed slowing. -- Ken Lyons '97 Brilliant Black/'90 Classic Red Inside the Beltway [Remove the first two digits to reply] |
#14
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Clutch advice
In article >,
XS11E > wrote: > > I was thinking a small leak at the rear main seal might > > contaminate your clutch without a visible drip. > > Isn't a leak from the transmission front seal much more likely to oil > the clutch? Yeah, probably so. But Ithink the crank seal is a lot more likely to leak in the first place than the tranny seal. Whatever. It's SOP to replace both seals while it's apart, regardless. -- Lanny Chambers '94C, St. Louis http://www.hummingbirds.net/alignment.html |
#15
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Clutch advice
Lanny Chambers > wrote in
: > In article >, > XS11E > wrote: > >> > I was thinking a small leak at the rear main seal might >> > contaminate your clutch without a visible drip. >> >> Isn't a leak from the transmission front seal much more likely to >> oil the clutch? > > Yeah, probably so. But Ithink the crank seal is a lot more likely > to leak in the first place than the tranny seal. Whatever. It's > SOP to replace both seals while it's apart, regardless. Maybe, on most cars (don't know about Miata) the flywheel needen't be removed (unless it needs to be resurfaced), oil from the rear engine seal will leak onto the flywheel and be thrown off as the flywheel spins but oil from the front tranny seal will follow the input shaft and right onto the clutch face. Personally, I'd just replace the Miata with a white one, Leo says they're faster* and he wouldn't kid us...... would he? ;-) *Actually, the fastest Miata I know of is green.... http://www.diamondmotorsport.com/greenmiatas.htm |
#16
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Clutch advice
If the throwout bearing was lubricated correctly before it was installed on
the shaft, it will tend to sling any leaking tranny fluid out to the bellhousing. A bad leak or a plugged bellhousing drain might allow tranny fluid to drip onto the clutch, or build up until the flywheel and clutch contacts a puddle of fluid. (I've not run across this on a Miata, but there is always a first time.) On the other hand, a Miata shop like R Speed in Atlanta would more likely have run across all the possibilities. .. "XS11E" > wrote in message ... > Lanny Chambers > wrote in > : > > > In article >, > > XS11E > wrote: > > > >> > I was thinking a small leak at the rear main seal might > >> > contaminate your clutch without a visible drip. > >> > >> Isn't a leak from the transmission front seal much more likely to > >> oil the clutch? > > > > Yeah, probably so. But Ithink the crank seal is a lot more likely > > to leak in the first place than the tranny seal. Whatever. It's > > SOP to replace both seals while it's apart, regardless. > > Maybe, on most cars (don't know about Miata) the flywheel needen't be > removed (unless it needs to be resurfaced), oil from the rear engine > seal will leak onto the flywheel and be thrown off as the flywheel > spins but oil from the front tranny seal will follow the input shaft > and right onto the clutch face. > > Personally, I'd just replace the Miata with a white one, Leo says > they're faster* and he wouldn't kid us...... would he? ;-) > > *Actually, the fastest Miata I know of is green.... > > http://www.diamondmotorsport.com/greenmiatas.htm > |
#17
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Clutch advice
Well - I'm repainting the car pretty soon, so if it'll get me more speed
I'll go with white! :-) > Personally, I'd just replace the Miata with a white one, Leo says > they're faster* and he wouldn't kid us...... would he? ;-) > |
#18
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Clutch advice
"Lanny Chambers" > wrote in message ... > In article >, > "Chris D'Agnolo" > wrote: > >> Would it be safe to assume that the more heavy duty clutch would be a >> 'higher effort' / stiffer clutch? If so, that would be an improvement >> IMHO > > There's a downside to stiffer clutches. They tend to wear the thrust > bearing excessively when the engine is started with the clutch in, > before the oil pressure comes up. The general advice for turbo owners, > etc., with HD pressure plates is to disable the clutch interlock and > start the car without pushing the pedal down. Once the oil pressure is > up, the issue goes away. > > -- What has oil pressure got to do with load on the thrust bearing? The thrust bearing is (in most cars at least) not supplied with oil from the engine. Are you confusing the thrust bearing with the crank bearings? |
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