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#37861 05/15/2003 12:19 AM | Joined: Dec 2002 Posts: 176 Shop Shark | | Shop Shark Joined: Dec 2002 Posts: 176 | We're going to do a compression check on my son's '62 today. What kind of range is considered "normal" for this engine, and what numbers will tell us that we have a problem? (I mean besides zero!  ) Thanks in advance.
Then you will know the truth, and the truth will set you free.
- Jesus -
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#37862 05/15/2003 12:42 AM | Joined: Apr 2002 Posts: 146 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2002 Posts: 146 | I just did mine. I got 130 -120 on all cylinders.
The book say the cylinders should all read the same +- 10psi. It depends on the kind of gauge you use I use a screw in the press on ones must read lower. But I would worry about any readings below 90.
if it dosen't need fixed, break it
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#37863 05/15/2003 3:06 AM | Joined: Jan 2002 Posts: 2,841 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,841 | I have a Feb '62 built 235 in my '50 deluxe cab and recently did a comp test with the results being 120-122 pounds.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
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#37864 05/15/2003 8:09 AM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | do it warm and block open the throttle to get consistant results.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#37865 05/15/2003 12:21 PM | Joined: Feb 2001 Posts: 1,897 Member | | Member Joined: Feb 2001 Posts: 1,897 | No more than 10psi variance for a good balance.
There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!
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#37866 05/15/2003 3:33 PM | Joined: Dec 2002 Posts: 176 Shop Shark | | Shop Shark Joined: Dec 2002 Posts: 176 | Thank you all. We didn't get to it last night. We spent too much time trying to find the little timing mark on the flywheel. Never did find it.
Then you will know the truth, and the truth will set you free.
- Jesus -
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#37867 05/17/2003 5:12 AM | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | Thats why I mentioned the dial-back light.. Twist the knob, and the ball shows up. If the timing is too advanced or too retarded, it'll be out of the window... literally!
Preaching the Hot Rod Gospel according to the 4-stroke apostles:
Suck, Squish, Fire and Fumes
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