69 L36 Stock compression
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Racer
Joined: Sep 2005
Posts: 359
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From: Shoemakersville Pa
69 L36 Stock compression
I'm in the process of tearing down a 69 numbers matching L36 car and before I remove the engine I want to check the compression on all the cylinders. The odometer shows 125,000. I bought the car about 3 months ago according to the seller the engine was rebuilt at 70,000
Assuming the engine was rebuilt to original specs does anyone know what cylinder compression i should have.
Assuming the engine was rebuilt to original specs does anyone know what cylinder compression i should have.
Racer
Joined: Jul 2004
Posts: 408
Likes: 0
From: Buffalo NY
I don't know if this helps, because I don't know the previous history of my motor, but it is a 69 427/390. I just checked compression about 2 months ago and all 8 cylinders came in at 180psi. I will be interested in seeing what others say is correct.
Thread Starter
Racer
Joined: Sep 2005
Posts: 359
Likes: 0
From: Shoemakersville Pa
I did a compression check last night all cylinders were between 175 and 180 except for one the third one from the front on the passengers side i guess it would be number 6 cylinder was only 155. Why that one was so much different i don't know, but i checked it more than once and could'nt get any more than the 155. It might have been like that from the rebuild who knows. I'm thinking i should'nt have to bore it this time maybe just a honing and new rings. What do you think?
Thread Starter
Racer
Joined: Sep 2005
Posts: 359
Likes: 0
From: Shoemakersville Pa
Originally Posted by not a '76
pour some oil in the low cylender and re do the test to see if its rings or valves.
