C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Sep 24, 2006 | 04:26 PM
  #1  
BanGnGearS's Avatar
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From: Bayonne NJ
Default Smoking again!

Some of you may rememer about a week or so i posted a thread about my rebuild an the vette beginning to smoke.. I had it out for about 2 weeks now and it was finally broken in.. I had it on the highway yesterday after and i was on her pretty hard getting into higher rpms (4500) When i came to a stop in front of my house i noticed some smoke.. I put it away for the night and when i came back to the garage this mornin to start her up she started smoking again after about 5 minutes or so.. I guess its time for a stroker kit.. Im guessing that since i didn't have the cylinders bored and sleeved that this may be the culprit.. Im done being angry with the car, i should have taken all these steps in the first place. i figured that since the car had only about 75k on the engine it would be fine.. Live and Learn i guess
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Old Sep 24, 2006 | 04:50 PM
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I remeber your other post.
Did you at least deglaze or hone the cyl walls?
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Old Sep 24, 2006 | 05:43 PM
  #3  
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From: Bayonne NJ
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I had them honed.. but the guy that helped me build the engine the first time worked for a machine shop.. Little did i kno he was terrible.. He got fired a few weeks later.. He honed them when i brought the block to the shop.

I can't understand why it would stop smoking for 2 weeks and then start suddenly again.. I think the vette just really wants to be stroked
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Old Sep 24, 2006 | 10:35 PM
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What color is the smoke?Did you replace the valve stem seals when you rebuilt it? As you may know chevys are famous for valve stem seals crapping out.
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Old Sep 24, 2006 | 10:47 PM
  #5  
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Yea i had the heads off.. They are new Dart heads.. Seals are fine no oil on the interior of the valves.. I dont kno.. The smoke stopped believe it or not.. Hoping that from ragging on it maybe the pipes got hotter an the oil residue heated back up??? wishful thinking i guess
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Old Sep 25, 2006 | 06:55 AM
  #6  
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Do a compression test on the cylinders to see what you have before aking any decisions. Unless you want an excuse to build a stroker
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Old Sep 25, 2006 | 08:06 AM
  #7  
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...Roger...
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From: Dayton, Ohio
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Originally Posted by BanGnGearS
Yea i had the heads off.. They are new Dart heads.. Seals are fine no oil on the interior of the valves.. I dont kno.. The smoke stopped believe it or not.. Hoping that from ragging on it maybe the pipes got hotter an the oil residue heated back up??? wishful thinking i guess
Sounds like you have covered all the bases and you have a good feel for serious problems.Drive it and keep a check on things and read your plugs.You could of had build up in your mufflers.Just drive and try to enjoy ! (but keep the radio low)
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Old Sep 25, 2006 | 12:45 PM
  #8  
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From: Bayonne NJ
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I think i solved my problem! Well not really, but my neighbor is throwing a 454 in his SS so i am going to purchase his 350/350.

On another note.. I took the vette out today to clean it up a little bit.. when i was finished i took it for a spin an decided to take it on the highway to really get on it.. I brought it to about redline thru the first 3 gears. i noticed that when i came back around town sitting at lights the smoke wasn't as bad.. A little puff of grey smoke and then it would seem to stop.. Maybe she likes just being ragged on... IDK.. Im thinking that i blew out whatever oil was in the #8 cylinder by driving it like that???
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Old Sep 25, 2006 | 02:14 PM
  #9  
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When you hone a block, you have to hone it with the grit stone required by the rings you are going to use.

You don't "generic" hone a block. The final cylinder wall finish has to match the type of ring (material) you are going to install. This will make a big difference in how well the rings will seal, or, if they will seal at all.

I'm sure your friend knew that though.

But if he didn't, now you can tell him.

Here ya go... http://www.aa1car.com/library/2000/ar90058.htm

Last edited by Tom454; Sep 25, 2006 at 02:42 PM.
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