Any downside to milling TFS 235 heads to 65cc from 70cc?
03-04-2009, 01:33 PM
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According to TFS, they can be milled safely to 54cc... I am milling mine to 58 or 60cc. they have a huge deck, but unless you are naturally aspirated, why do you want to mill them? 5cc's will change about a point of compression
03-05-2009, 01:38 AM
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I had several extensive phone conversations with TFS and they can be brought down to 54-56cc, safely. They even said I can angle mill them as well up to 80 thousandths
I agree with you Fraser and I wouldn't recommend it for a poweradder deal because I would want as much deck as possible. I would just build the piston for my compression, not mill the heads
But when I have stuffed the chamber with as much dome as I can without compromising flame travel, I have to mill my heads down to get my desired compression ratio... 70cc ain't gonna cut it
I agree with you Fraser and I wouldn't recommend it for a poweradder deal because I would want as much deck as possible. I would just build the piston for my compression, not mill the heads
But when I have stuffed the chamber with as much dome as I can without compromising flame travel, I have to mill my heads down to get my desired compression ratio... 70cc ain't gonna cut it
