Proper Compression?

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Dec 19, 2007 | 08:51 PM

Fasttimes73

Thread Starter

Instructor

Joined: Oct 2007

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Proper Compression?

Hey everybody,
I am going to check compression on my 2000 FRC this weekend, just wondering what it should be registering? Any feedback would be greatly appreciated!

Dec 19, 2007 | 09:34 PM

Plasticfan

Pro

Joined: Jun 2007

Posts: 631

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From: Joppa AL

Pretty good info here

http://forums.corvetteforum.com/show...mpression+test

HTH

Dec 19, 2007 | 10:33 PM

Joe0121

Race Director

Joined: Feb 2006

Posts: 10,336

Likes: 14

From: Bellville OH

St. Jude Donor '06

SO you buy the gauge, stick it where the spark plug goes and try to start the engine (which it won't start becuase no spark plugs) How do you get the TB open?

Dec 20, 2007 | 10:44 AM

Plasticfan

Pro

Joined: Jun 2007

Posts: 631

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From: Joppa AL

Quote:

Originally Posted by Joe0121

SO you buy the gauge, stick it where the spark plug goes and try to start the engine (which it won't start becuase no spark plugs) How do you get the TB open?

I usually just stick something like a plastic screwdriver handle in it. Anything that will hold it open and not scratch it.

Dec 20, 2007 | 11:41 AM

vetter79

Burning Brakes

Joined: Jul 2007

Posts: 924

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From: Macedon NY

Main thing in compression test is to see if all cylinders are close to being the same. At least, that's what we checked for over the last 40+ years. Also, you don't want it to be, like 30 or so #'s. Should be I'd say 110# + depending on the mileage.
Tune in if I'm wrong guys!