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#1
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2000 C5, 50k miles, 6-spd, transmission noise
Hi, Folks. First time vette owner (since Friday). I am in the curious
situation of owning both a 280ZX Turbo and a C5 6-spd Vette. You may know that the Z has a BW T5 in it, whereas my "blue car" has a T56. That is to say I am accustomed to some transmission noise. In the Z, I have some low-gear noise. It sounds like a rotating noise that I'd expect from being in low gear. This is fairly constant, when you can hear the transmission over the rest of the car (the Z is ... a project of mine, and is well into the 300hp range, it is loud). In the Vette, I have noise that is similar, but more.. "unhappy" sounding. I'd say almost gravelly. This sound is between 1000 and 1500 rpm, especially in first and second gear, while the car is under way. Not so much while idling. This to me almost seems like a throwout bearing. The car was bought used, and I haven't the luxury of an owners video, owners manual, or factory service manual. There are several Vette owners at work, and I intend to run the noise by them to see if they know what it is. I suspect it might be the normal "Vette T56 noise" that others have described in the newsgroup. What's a sure way to tell the difference? I looked at a few sites today, notably zfdoc, but I couldn't find anything that was real definitive. The description I've heard repeated was "rocks in a can." I could maybe think the noise was similar to that, but the fact that it is so transient, and the fact that the car seems otherwise healthy, make me think it might just be normal transmission noise. The one thing that worries me is there is an occasional (say one out of 20 shifts from neutral into first) unwillingness to engage first. throwing down to second and back up into first works, but it's kind of embarassing at a light. I actually had some twit in a Rav-4 honk at me. Are the owners manual/videos available online somewhere? Is the $1700 price for a new transmission I read earlier today (from 2000) still valid? If the transmission is hosed, what can I expect to pay to replace the whole thing? Is it worth finding a hardened transmission (such as from zfdoc)? I spent a lot of money hardening everything in the Z -- halfshafts, hubs, driveshaft, differential, etc -- after I started piling on modifications. I'm not so sure the Vette needs the help the Z does, but it couldn't hurt, right? Thanks in advance, sory for asking so many questions. :-) Alex ps, for those that love baby pictures (me included): http://mithril.posixnap.net/~alex/stable.jpg (the vette is the one on the right) |
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#2
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Alex... a quick reply. First will pop out unless it is seated firmly. I
think I remember you are pushing through 3 synchros to engage that gear. That's happened twice to me so far with my '04 Z-06 in 6k miles. As for the noise, they are noisy. Let me suggest a fluid change to GM Synchromesh fluid and take it from there. Good luck and have fun. Gerd |
#3
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Alex... a quick reply. First will pop out unless it is seated firmly. I
think I remember you are pushing through 3 synchros to engage that gear. That's happened twice to me so far with my '04 Z-06 in 6k miles. As for the noise, they are noisy. Let me suggest a fluid change to GM Synchromesh fluid and take it from there. Good luck and have fun. Gerd |
#4
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To buy real ones,
http://www.helminc.com/helm/search_service_owner.asp Alex J. Avriette wrote: > > Are the owners manual/videos available online somewhere? Is the $1700 > price for a new transmission I read earlier today (from 2000) still > valid? If the transmission is hosed, what can I expect to pay to |
#5
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To buy real ones,
http://www.helminc.com/helm/search_service_owner.asp Alex J. Avriette wrote: > > Are the owners manual/videos available online somewhere? Is the $1700 > price for a new transmission I read earlier today (from 2000) still > valid? If the transmission is hosed, what can I expect to pay to |
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