Jim,
About twenty-two years ago, I did the same thing to a 1973 GT6 Mk3 that I
owned. That car had some off-idle stumble problems and the rise in
compression helped smooth that out a bit. The only problems I encountered
were that I had to shim the rocker arm pedestals and I had to put premium
fuel in it (before the mod, I could get away with regular during thw winter
months).
Hope this helps,
Hugh Barber
Hollister, CA
'73 TR6
Hi folks
I have my head off and in am intending to have it milled. The factory
compression on my head is 7.75:1 (1972) and I plan to have it milled to
yield to a 9.5:1 ration. I do not plan to replace the cam right away (need
to watch the $$$), but aside from the fact the motor won't fully realize the
potential performance gain from the compression increase, will there be any
harm in doing this. It's hard for me to think there would be, but for the
fact I've seen so MANY opinions about this subject that I have a small
concern that there MIGHT be.
Anyone with real experience with this?
Jim Jones
'72 Emerald
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