| Most TT conversions out there are done as a full engine swap. NA engine (with it's 10:1 comp) comes out, and a TT engine (with it's 8.5:1 comp and turbos) goes in. Ash actually did a conversion of his NA block to TT spec. And as far as I know, that included lowering the compression as well. Others have gone this route as well, but it's much less common. The one that you described has been done a few times, but it takes more fine tuning due to the higher comp ratio. It's very rare and it is not "the reason behind all these conversions."
Later, Spencer AIM: sbsTT14 PETZ member #4 '91 300ZX TT Stage IV+ '96 Jeep Cherokee Sport 
"I felt like I was rear-ended by a highspeed train when I ran the car on high boost first time. Crazy...just crazy...." - timz 18:18:31 09/08/02 Ugly Hyper quote edited out for Jonathan Howlett "gotta admit, i do like sac." - Chris(NJ) 15:28:40 05/16/03 "It is just a car, and this is just a message board. Grow up, live your life, quit stressing out about trivial shit." - Steve Simmons 01:51:03 05/24/03 |