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-   -   BOV spring rate question? (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/bov-spring-rate-question-1116998/)

ngirondo 07-25-17 06:42 AM
BOV spring rate question?
 
Hey guys so i have a 1992 FD with a single turbo and large street port. I have a Tial Q 50mm BOV, at idle I'm getting a surge in RPMs and the BOV opens and closes. I took it to a Rotary shop here in Japan and he said maybe it was to soft of a spring and i should try to swap it. My question is would that do it? What spring rate should the FD with my mods have installed? :scratch:Im not sure whats installed now i have to check it in the AM.

Red94fd 07-28-17 10:30 AM
I dont think it should surge at idle. At idle the bov doesnt matter. It could sound like air leaking, if its busted.

MK3Brent 07-28-17 12:50 PM
Originally Posted by ngirondo (Post 12203063)
Hey guys so i have a 1992 FD with a single turbo and large street port. I have a Tial Q 50mm BOV, at idle I'm getting a surge in RPMs and the BOV opens and closes. I took it to a Rotary shop here in Japan and he said maybe it was to soft of a spring and i should try to swap it. My question is would that do it? What spring rate should the FD with my mods have installed? :scratch:Im not sure whats installed now i have to check it in the AM.
What amount of vacuum is the engine producing at idle?


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