Compression numbers question
#1
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Compression numbers question
I already have sourced a used 1.6L to swap into my car, but I was thinking about my compression number a bit and I am starting the think that the problem is just a valve problem that a head swap would fix. Here's why:
dry compression 90-181-185-90
wet compression 95-185-189-95
If it were rings, shouldn't compression increase more with the wet? I added a tablespoon of oil on the wet test.
I ask b/c it would be much easier to just swap in the head. Thoughts?
dry compression 90-181-185-90
wet compression 95-185-189-95
If it were rings, shouldn't compression increase more with the wet? I added a tablespoon of oil on the wet test.
I ask b/c it would be much easier to just swap in the head. Thoughts?
#4
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Time to put in an EGT gauge while the manifold is off .
#6
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depends how bad the piston rings are... the oil from the "wet" test could be draining right through.
A leakdown test will tell you immediately if it's the valves or not. you'll hear air coming out of them when they're closed...
A leakdown test will tell you immediately if it's the valves or not. you'll hear air coming out of them when they're closed...
#8
rebuild with 3 angle valve job could run 400-1000 dollars depending on what he gets done parts etc. FWIW BGR my piston was totally smashed on the ring lands and it still showed great improvement with oil in it. So i am voting for headgasket failure, and maybe burnt valve but i doubt that one more every minute. Stock HG is only reliable up to 15 psi with stock bolts etc. you where pushing what 17-18 psi, think about it. i think that was what i heard but i am unsure.
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