2.8 cyl compression
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Joined: Jul 2014
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Car: 89 RSt-top
Engine: 2.8 mpfi
Transmission: auto
2.8 cyl compression
Hey guys and girls.
Would like to know what the compression of the 2.8 was.
Did compression test on my car 89 rs 2.8
Came out to 149-152 on all cyls. Pretty sure the 149 was just from me not waiting till gauge was finished moving. Are these numbers good. What was orginal and what are ur 2.8s running at
Would like to know what the compression of the 2.8 was.
Did compression test on my car 89 rs 2.8
Came out to 149-152 on all cyls. Pretty sure the 149 was just from me not waiting till gauge was finished moving. Are these numbers good. What was orginal and what are ur 2.8s running at
Joined: Mar 2011
Posts: 6,287
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From: Northwest Ohio
Car: 1991 Camaro RS
Engine: Lq4 6.0 SBE s485 turbo E85
Transmission: Fsi th400 stage 4. TSI 5500 st
Axle/Gears: Strange S60 4:10s
Re: 2.8 cyl compression
Those numbers are good. Did you happen to leave the Guage on and see how long it took to drop pressure?
Thread Starter
Junior Member
Joined: Jul 2014
Posts: 55
Likes: 0
Car: 89 RSt-top
Engine: 2.8 mpfi
Transmission: auto
Re: 2.8 cyl compression
Hey fasteddy thanks for the reply
No I did not leave the gauge on, my tester has a pressure release. Is there a way to do what ur sayin. I know what ur getting at a leak down test.
No I did not leave the gauge on, my tester has a pressure release. Is there a way to do what ur sayin. I know what ur getting at a leak down test.
Joined: Mar 2006
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
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Re: 2.8 cyl compression
A leak down tester is a completely different tool. The pressure from a dynamic compression test bleeds off as quickly as it builds.
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