Compression results and suggestions
#11
I expected a bent or burnt valve to show way less than 180 psi. But im not sure how a valve adjustment can really help this unless it was actually leaving it slightly open during its cycle. I am almost hoping it could be some carbon build up on the back of the valve and hoping some seafoam could clean it up.
#12
How many miles are on your car? I actually had a similar situation a couple years ago. All my exhaust valves were super tight from the previous owners neglecting valve adjustments. I took the head off and to the machine shop where they discovered all the exhaust valve seats were beat up from the valves being way too tight. They installed new valve seats, I supplied them with Ferrea valves/springs/retainers, and after the head was rebuilt, my compression numbers came back up to what they should have been. The engine had over 140k miles and the cylinder walls didn't look all that great, but it ran great afterward. It even went on to make 560whp with boost on that exact same engine. You'll just have to really dig in and figure out where/why you're losing compression.
#13
How many miles are on your car? I actually had a similar situation a couple years ago. All my exhaust valves were super tight from the previous owners neglecting valve adjustments. I took the head off and to the machine shop where they discovered all the exhaust valve seats were beat up from the valves being way too tight. They installed new valve seats, I supplied them with Ferrea valves/springs/retainers, and after the head was rebuilt, my compression numbers came back up to what they should have been. The engine had over 140k miles and the cylinder walls didn't look all that great, but it ran great afterward. It even went on to make 560whp with boost on that exact same engine. You'll just have to really dig in and figure out where/why you're losing compression.
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udelslayer
Member S2000 Classifieds and For Sale
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06-07-2015 10:03 PM