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Thanks for the detailed information and posting the log.
I have 370lb springs in the twin plug heads, but they will lose some pressure as they are run, estimating 10% so should end up at 330lbs. I told Len that I would not be boosting past 20psi though, or revving past 6500 rpm.
I based my turbine selection (Garret GT3076R, 0.63 hot side) on information provided mostly through Subaru boards, as the STI engine is 2457cc vs my 2413cc, and I had no aircooled data at the time. It is 4v vs 2v though as far as valves per cylinder is concerned, but I think the 2v per head should have better intake velocity.
The .63 is supposed to provide better spool but not as much top end as the .82, which is the next step up for the Garret GT3076R.
I was looking at an honest 300 FWHP motor, not stressed but living a comfortable life, but it looks like 350-375 FWHP should be more realistinc.
Thanks for all of the information, your motor build has been very educational and inspirational and I hope to be able to join your ranks in the coming months.
Sandeep
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