COMPRESSON ON CLASSIC STI
27 July 2009, 09:28 PM
#1
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COMPRESSON ON CLASSIC STI
Can anyone tell me the compresson on my car (97 sti ra)or what it should be,,,
mine is reading 132/130psi on driver side...then 125/115psi on passenger side due to HG failure / work in progress....
is the 130/132psi good or should it be higher
thanks
mine is reading 132/130psi on driver side...then 125/115psi on passenger side due to HG failure / work in progress....
is the 130/132psi good or should it be higher
thanks
27 July 2009, 11:48 PM
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Your replacing both sides right ? compression will also depend on ring seal and valve seal 130++ and even on all cylinders is a good start, without knowing millage etc.
28 July 2009, 06:22 PM
#4
As Un-Ink stated above - depends on mileage,valve sealing,condition of the bores,rings etc etc.
The norm would be approx 140 ~ 170 psi on an engine in good order, a freshly built engine would normally show approx 150 psi (dependant on spec) on initial cranking and not run in/bedded in.
Mick
The norm would be approx 140 ~ 170 psi on an engine in good order, a freshly built engine would normally show approx 150 psi (dependant on spec) on initial cranking and not run in/bedded in.
Mick
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