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Originally Posted by Bad bug
Zen what i mean is unevenly cooled pistons. I do hope jake would finish the 911 system he bought from joe. Zen in your estimation which one of the systems cool the best. I bought my engine with the fat system.
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sandeep has some good data on it. i can only go on what i saw on my Westach dual CHT (on 1 and 3). i didn't have many miles on the engine before loosing a lifter (ended up being identified as a bad batch of lifters after 7+engines went from the batch), but typically saw a 30-50 degree difference.
i am running a DTM now and VERY happy with the results. always dead on and have only bumped 275 one time.