[70 bird]

Sounds like great risk for a little extra power, I would lower the compression a bit and have some fun without melting parts. JMO.

[Tom Vaught]

Originally Posted by 70 bird

Sounds like great risk for a little extra power, I would lower the compression a bit and have some fun without melting parts. JMO.

Even if the price was $800 ($100 per chamber), if you could take 20 ccs more out of your 76 cc heads and get a 96 cc head you would be in a much better area for compression ratio vs boost. I am talking about the SD combustion chamber mod.

But for basically the same money, removing the pistons and putting in a dished piston with a proper top ring location, proper ring gaps, and a stronger pin/piston design would net far better benefits.

Tom V.