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Old 10-11-2005, 08:16 PM   #16
lambertvr4
 
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Re: Piston Damage/color

I hope it helps someone too. Nice post.

I still see nothing that explains how/why cam timing could not cause the problem. I too have a lot of experience with tuning. That doesn't make me an expert though. I agree with most of what you've posted, but it is only an introduction with many loopholes for contradiction of the implied theory. That's the nature of the beast though. Hence there is still no perfect model for engine combustion.

Back on topic.

Poor tune = burnt up engine. Tuning is tricky, but it isn't voodoo. It seems that way though because the consequences for screwing up can be very expensive unfortunately. If you'd like some pointers for tuning, let me know. I don't know how far you want to get off topic.
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Old 10-11-2005, 08:55 PM   #17
FLEclipse97
 
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Re: Piston Damage/color

Quote:
Originally Posted by lambertvr4
Back on topic.

Poor tune = burnt up engine. Tuning is tricky, but it isn't voodoo. It seems that way though because the consequences for screwing up can be very expensive unfortunately. If you'd like some pointers for tuning, let me know. I don't know how far you want to get off topic.
Basically that's it, I think a lot of things DID contribute to this, mainly the extreme (for my setup) timing advance. However, the cam issue probably played an additional role and either way it is a problem that is getting fixed, and hopefully shows a better burn next time the head comes off.

4 degrees of additional timing =
Blown Metal HG ($90)
Pistons (x2) ($240)
Cam Gears ($160)
Head work ($50)
Grand total this time $540 (not bad)
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Old 10-11-2005, 09:09 PM   #18
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Re: Piston Damage/color

Thankfully you can do most of your own work. Labor costs would make this really painful.
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Old 10-11-2005, 10:23 PM   #19
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Re: Piston Damage/color

I wouldn't even want to think the cost of my buildup/setup in "labor" dollars... I've put a lot of time in this damn thing over the past 6 months (and more to come).


I couldn't afford this car if i didn't work on it.
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