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Corvettes and all things about them

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  • ruking1ruking1 Posts: 14,954
    They don't publish this too much and indeed I read it in a print interview with some Chevrolet quality control guy, but the LS1 and LS6 motor are specified to run 175k as the statistical middle (mean) point.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 45,244
    That's pretty good, although I've never seen a Corvette of any year with that high miles, mostly because people don't drive them that far, not because they couldn't do it. Until the C5 at least, you really didn't want to drive them as a commuter car.

    Every automaker in the world has occasional engine disasters. It's the statistical inevitability of mass production.

    MODERATOR --Need help with anything? Click on my name!

  • knoxadknoxad Posts: 2
    To starrow68 I ask, do you have the real time damping option in your vette? Could this make a difference in the CD changer skipping?

    To anyone, does anyone know of any reported issues with the CD changer in the C-5 vettes? (dealer or factory installed)
  • ruking1ruking1 Posts: 14,954
    #33

    I would just bring it in under warranty! I would imagine it is very annoying ! My single CD player skips occasionally, but we do have very poor roads here in NO CA. Sometimes going over our roads it will about rattle the dental work in your head!
  • starrow68starrow68 Posts: 1,142
    No real time damping, actually got it with the Z51 performance suspension to go with the 6 speed. I don't use the in dash CD much but when I have, I also haven't had any skip problems either. Good luck, I would say find out about factory installation vs. what the dealer did and check the make of the unit.
  • andys120andys120 Loudon NHPosts: 16,684
    Even with the sport suspension I can't make the
    CD player in my Audi skip. Sorry, not braggin',
    just an FYI 'cuz I don't think they should skip except
    in severe conditions

    2000 BMW 528i, 2001 BMW 330CiC

  • gearhead7gearhead7 Posts: 15
    My '00 Z51 6 speed has the CD changer factory installed. To my knowledge, it has NEVER skipped in over two years.

    To those trolls like verozahl - please advise of a make that has not had any engine problems ever, so that we can all appreciate your opinion more fully.

    Maybe we can race for pink slips? ;)
  • mdm4mdm4 Posts: 33
    Does anyone have an interchange manual? I need to replace both bumpers on my 1975 coupe (both cracked). I am going to a swap meet at the end of the month and need to know what year(s) bumpers will bolt on. I was told 1975 through 1979 are the same but I want to confirm this before I purchase. Any information will be greatly appreciated. You may e-mail me at:
    MDM1@WESTCHESTERGOV.COM
  • aotearoaaotearoa Posts: 5
    Firstly - thanks for the replys. The engine has been replaced (under extended warranty) and now they are having to replace the fly-wheel (under pressure) and clutch plate. The dealer is telling me that the clutch is my problen as this is a wear-and-tear item and won't be covered under insurance! Here again ; does anyone have any experience with clutch relacement - distance driven? less than 30,000 miles seems a very short life span for the clutch plate - even if it had been driven real hard! Your thoughts would be much appreciated.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 45,244
    I'm afraid I'll side with the dealer in this case, in that clutch replacement is heavily dependent on both the driver's skills and on the HP generated by the car. On a supercar like a Corvette, 30K miles on a clutch is certainly within reason, maybe a bit on the low end, but that's what you get unless maybe you baby the car. ( and what's the point of THAT?).

    Many powerful AWD cars, as well as cars like Ferrari & Viper, will experience rather short clutch life compared to the average passenger car. The old Jaguar E-Types would be lucky to get 30K, and on those the entire engine and trans comes out.

    MODERATOR --Need help with anything? Click on my name!

  • ruking1ruking1 Posts: 14,954
    #39

    While I do not have a clue how you drive, I might add that 30k is way short in terms of flywheel and clutch life. The good news and the bad news is that the components are not built with much excess in capacity. A case in point is the Z06 which can be slightly underrated in the flywheel horsepower @ 385 hp. The clutch is really rated for not much more than 345 RW hp. This fact was driven home on the 2002 model when the flywheel hp was raised to 405 hp BUT they had to use a different clutch and clutch plate for it could not statistically handle the plus 15 hp difference reliably. How the Corvette staff explain this in market eaze is: they do not design the car to get ahead of itself"
  • Thats cool that they replaced the engine at least! Now its like having a new car again....well almost....just replace the breaks.
  • jrosasmcjrosasmc Posts: 1,704
    Do even the new '02 Corvettes still have the 1-to-4 "skip-shift" feature on 6-speeds?
  • starrow68starrow68 Posts: 1,142
    It is alive and well in the 2002. Although, after hearing many complaints I have messed with 1st to 3rd and doing the 1st to 4th on occasion. Surprise, it makes a huge difference in the mpg, which is why it's there in the first place. Normal local driving I can get down to 16.5 mpg with all gears. On freeway average can get up to mid 20's easy. After a short local trip started at 18.0 mpg trip computer I did all city streets and did the skip shift, came back and comp mpg was at 18.4. Normally it would drop that much on a similar trip using all gears. Just a test, not a plan, mpg is not the reason to own this beast, and still planning to try a drag strip, as I improve my shifting up on ramps, as has been pointed out before, 0-60 is legal.
  • aotearoaaotearoa Posts: 5
    Thx again for the responses. I'm still learning from this engine experience.

    What could happen if the wrong grade of oil was put in the car?
    A service was carried out about 2 wks prior to the blow-up. At that time when I picked up the car, twice very quickly after, I got a "low oil pressure" when turning a sharp corner. Checking the oil dip stick level showed all appeared OK. After those incidents all appeared normal. After the engine replacement I checked the new oil - it appeared to be a yellowish "pee" color - but the previous batch had been the usual brownish. Could the wrong grade of oil have caused engine failure?

    Next - The clutch and fly-wheel replacement.

    I understand that the fly-wheel comes with the new engine and is 'balanced' in the factory. The only way that F-W could get warped and the clutch burned out is if the "mating" job of engine and transmission was not done properly? The car was driven perhaps up to 50 miles in that incorrect state. On a short test myself - it was very evident that there was a serious clutch release, still apparently engaged (something!) problem. When driving it was almost impossible to change into some gears! Is this why the F-W is warped and the clutch plate burned out? And how do they ensure the new Fly-Wheel will be properly balanced on the car?

    Wish I knew more about these things - but I'm getting there - with a lot of help. Thx.
  • aotearoaaotearoa Posts: 5
    Seems now the problem is with the thrust bearing - it failed. So, ....Why...at the same time?.

    But the other issue - the wrong oil (instead of the synthetic)?

    Looking forward to your responses.
  • ruking1ruking1 Posts: 14,954
    #43

    There are a few ways to bypass the skip shift.
    1. Shift early (before the stated RPM range where the skip shift works) {this is what I do}
    2. Shift after (after the stated RPM range where the skip shift works)
    3. Start off in second gear. (I don't do this)
    4. Install the CAGS defeat circuitry. (Cost from .50 cents to $20. for parts.)

    #45

    Given the situation you describe, probably not, with a very very low probability. Also, you can bet a dollar to a donut , that before they decided to honor your warranty, they probably looked for ways to deny it. To make a long story short, VERY few engine problems are due to engine oil.

    I would press them to redo or warranty the FW problem that you are having.
  • starrow68starrow68 Posts: 1,142
    All I know is what they tell you in the book. The LS1 requires the synthetic oil, and when I went into the local Chevy dealer, not where I bought it, I confirmed that a. they had a C5 specialist and b. they had their system set to only put Mobil 1 into the C5. They then made sure I knew how important only refilling with the same brand was. I have also heard that keeping it full, as opposed to what I think most people do, let it get 1/2 qt. low and then refill, is important. I've found that getting a good reading with the newer, lighter oils is not that easy either. Good luck with the new engine.

    On the clutch issue, no background to be able to comment. You might want to try some of the more Corvette specific boards. :)
  • starrow68starrow68 Posts: 1,142
    http://corvetteactioncenter.com/history/press/2002/04102002a.html

    Info on the 50th anniversary for somebody who brought that up some time ago. I understand that it will be available toward the end of June.
  • andys120andys120 Loudon NHPosts: 16,684
    I was accelerating away from a light in my almost new '91 SAAB 9000 Turbo when the clutch basically grenaded (cracked clutch disc). When they wanted to charge me for a replacement I simply asked if the clutch plate had any sign of abuse such as burning or scoring on the plate. I knew the answer would be "no".

    I asked if they would let me discuss with the Saab Factory Tech.

    Long story short. They did the fair thing and gave me a new clutch. In the absence of signs of abuse it's hard to see how a clutch could fail at
    12,000 miles, to Saab's credit they acknowledged that.

    2000 BMW 528i, 2001 BMW 330CiC

  • starrow68starrow68 Posts: 1,142
    Glad you enjoy your car.
  • they make cool original cars, but they really need to get there act togeather. Nothing they have is competitive for its price range. Nore are they very reliable. Still unique cars...
  • andys120andys120 Loudon NHPosts: 16,684
    you should be aware that Saab's FOR scores have improved considerably. My '96 is much, much better than either of my 9000s was.

    2000 BMW 528i, 2001 BMW 330CiC

  • post takeover reliability. Are they still getting better? Dont get me wrong, whenever I see one I really like the look and interior, I just think they get outperformed by german and japanese competaters for the same $$...if they were either cheaper, or faster, or more luxery I could see some advantage, but as is they need a redesign....and maybe 60 more HP. T
  • starrow68starrow68 Posts: 1,142
    Seems the 2002 model year is almost over. Last chance to special order is May 5 according to one dealer. After that it is dealer stock or place an order on a 50th 2003 model. They start production in June.
  • starrow68starrow68 Posts: 1,142
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