S91 Turbo Cam?
#42
What i'm saying is that to make the power you want at that high rpm with that small turbo your going to have to spin the compressor extremely fast,when doing that you gain a ton of backpressure-and that is whats killing the power.The higher the rpm the higher the backpressure.Yes the wastegate will relieve some pressure but it will take a great deal of exhaust pressure to spin the compressor wheel fast enough to make enough boost.
#43
I had a -12 turbo motor back about 7 years ago,385cid with a 101 on it,ran really good,went 7.50's on 10.5's,back then that was pretty fast.
#44
I'm not quite understanding the question-what c.l. is 115?the lsa of that cam is a 115,but that is ground into the cam and cant be changed.
I had a -12 turbo motor back about 7 years ago,385cid with a 101 on it,ran really good,went 7.50's on 10.5's,back then that was pretty fast.
I had a -12 turbo motor back about 7 years ago,385cid with a 101 on it,ran really good,went 7.50's on 10.5's,back then that was pretty fast.
Last edited by otherwhitemeat; 12-27-2008 at 12:08 AM.
#46
Shawn, is the reason for this because of the heat? I recently saw some Titanium Exhaust valves in a solid roller Turbo car actually stretch the valves from so much heat, they are not titanium any more.
#47
Exactly,above 800F titanium starts to weaken,above 1600F the structure of the metal changes,so titanium exhaust valves have a finite life in a turbo motor,just got to know when to get them out.