C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Jul 3, 2006 | 03:04 PM
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St. Jude Donor '06
Default 2 questions

1 what size is the EGR bolt on 93?

2 I took the throttle body of to clean it and the lower bolt on the passenger side was covered in oil, where good it have come from?
Also, the whole inside of the intake is caked with corbon buildup, is there a way to get in there and clean it?

Thanks!!
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Old Jul 3, 2006 | 03:48 PM
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1) M8, 1.25, I think.

2) oil? that's odd. Clean it. Someone may have oiled it for installation.

The caked on carbon is caused by the EGR. the loose stuff can be cleaned off with carb cleaner. the rest would require work.
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Old Jul 14, 2006 | 12:45 PM
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From: Sebastian Florida
St. Jude Donor '06
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Ok, it is not M8 or M7, I know a couple of other bolts are standard.
So what standard size would fit, that is one that is inbetween a M8 and a M7?

Thanks
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