[6pack] Compression Test

[Sally or Dick Taylor]

Bob---Generally speaking, if the cylinder pressures are fairly even as yours, you leave it alone. They are a little on the low side, tho, so a lot could depend here on other factors. I would suspect that a fresh, stock '72 engine would pull closer to 150 lb. per cylinder. You could do a leak down test to see where the pressures are escaping, which could tell you whether a simple valve job would bring them up, or a re-ring/ rebore is in order. 

Dick


-----Original Message-----
From: Bob Rochlin
Sent: Monday, September 26, 2011 2:28 PM
To: 6pack at autox.team.net
Subject: [6pack] Compression Test

Hi Everyone,  I did a compression test on my TR6 today and then found that i
couldn't find reference compression data.  i did the test dry and wet and got
the following results:
	#1  95 dry, 105 wet	#2   94 dry  105 wet	#3   89 dry  90 wet	#4   87 dry  98
wet        #5   100 dry  120 wet        #6   110 dry  120 wet  What should the
normal compression pressure be?  It looks to me that re doing the valves may
get a lot more power.  Rings?  To tell the truth, the car is running great and
seems to pull pretty well...Thanks,Bob Rochlin'72 TR 6

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