Marvelous3
Who engineered this?
- Joined
- Nov 12, 2002
- Location
- Atlanta
Riddle me this...
The Tial BOV I have on the red car came stock with a plain spring which says it is 11* for 18-20" vacuum. The red car pulls like 9-10" of vacuum at idle so this spring was way too stiff and causing compressor surge. I ordered a 7* spring for 8-13" vacuum yet was still getting compressor surge. I cut the 7* spring shorter and shorter trying to get it to work right but I was still getting surge. I eventually cut it so short that it was working but the BOV would remain open all of the time. I then added some shims to so that the BOV would stay closed while driving but the compressor surge is back. wtf.
If I boost it and let off vacuum will spike to 20" so there should be plenty of vacuum to pull the valve open. I do only have a smaller vac line running to the bov so maybe when I let off the vacuum is collapsing the hose? It's the only thing I can think of at this point.
The Tial BOV I have on the red car came stock with a plain spring which says it is 11* for 18-20" vacuum. The red car pulls like 9-10" of vacuum at idle so this spring was way too stiff and causing compressor surge. I ordered a 7* spring for 8-13" vacuum yet was still getting compressor surge. I cut the 7* spring shorter and shorter trying to get it to work right but I was still getting surge. I eventually cut it so short that it was working but the BOV would remain open all of the time. I then added some shims to so that the BOV would stay closed while driving but the compressor surge is back. wtf.
If I boost it and let off vacuum will spike to 20" so there should be plenty of vacuum to pull the valve open. I do only have a smaller vac line running to the bov so maybe when I let off the vacuum is collapsing the hose? It's the only thing I can think of at this point.