to blow off valve or not to blow off valve....
02-08-2002, 11:21 PM
#16
Addict
Rennlist Member
Rennlist Member
Another note, occasionally at the track, the prolonged high boost will pop one of the CV/BOV vaccuum lines loose. This serves to cut the peak boost I make back down to 1.5 bar from 2.0. Why is this? How is this vaccuum leak different than a drilled cycling valve? Thanks much, I am curious about this one,
Jason
Jason
02-09-2002, 09:18 AM
#17
Race Director
Jason, I think we have terminology mixed up here. The cycling valve controls boost and is located under the intake-manifold between the #3 & 4 intake runners.
The compressor bypass valve redirects pressurized air from the turbo-outlet right before the throttle-plate back around to the turbo-inlet below. It's located next to the coolant tank. It should only work when when you shift and there is vacumn applied to the little port on top, otherwise it's closed and your car works as if it's not there at all.
The compressor bypass valve redirects pressurized air from the turbo-outlet right before the throttle-plate back around to the turbo-inlet below. It's located next to the coolant tank. It should only work when when you shift and there is vacumn applied to the little port on top, otherwise it's closed and your car works as if it's not there at all.
