Mike,
I have been following along with the current posts regarding
this subject; I have been busy so I haven't been able to respond until
now! You should not have had any decrease in compression gauge reading
what-so-ever!
Rocker arms of a different ratio will NOT! Cause a decrease in the
static compression reading from a gauge. On the contrary, it would be
normal for the reading to be slightly higher!
Listers,
Thanks for all of your responses. For you additional information the
rockers are the Goodparts 1.55/1 ratio. My question really related to
the average of 30 PSI loss in compression and yes, with a nearly10/1
compression ratio I used to have from 193 to 204 PSI. I didn't expect
any noticeable difference in power just from the roller aspect of the
rockers but did think that the change in rocker ratio might improve
power slightly. I believe your responses have answered my question.
Overlap at idle reduces the compression somewhat because of the
increased rocker ratio.
Mike Lunsford, 1970 TR6
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