BOV staying open?
09-24-2008, 09:19 PM
#1
East Coast Style
Thread Starter
Join Date: Aug 2004
Location: Spartanburg S.C.
Posts: 536
BOV staying open?
I have just installed a new Turbo, Wastegate, and BOV. The BOV is a XS Power H/RFL, I installed all of the washers and put a restrictive hose barb in line with the vacuum line. It still stays open while idling and fluctuates when the throttle is burped. Any suggestions?
09-24-2008, 09:23 PM
#2
Externally Wastegated
Join Date: Oct 2001
Location: San Diego
Posts: 1,220
Sometimes the brass piston needs to be taken out and sprayed down with WD-40 to lube the cylinder walls. The RFL requires more end user maintenance than most other bovs. I'm using a knock off RFL (which is why in my vids no one believes me it's RFL b/c it sounds different), and I had to take out the rubber grommet in the cylinder to get mine to work right without getting stuck open. 16 psi and I had no problems with it getting stuck or leaking.
09-25-2008, 07:10 AM
#3
East Coast Style
Thread Starter
Join Date: Aug 2004
Location: Spartanburg S.C.
Posts: 536
My BOV is not getting stuck it is fluctuating at idle. With the engine turned off you can barely open the piston, but while running the vacuum is SO great that it stays cracked causing an erratic idle. I am machining an longer spacer to help the spring keep it closed. The problem I have is the old BOV I had was a cheap EBay special and it worked with no problems on a larger displacement engine with a higher compression ratio. I wonder if they sell a stronger spring?
09-25-2008, 09:55 AM
#4
The Evil Twin
Join Date: Mar 2001
Location: Seattle, WA
Posts: 9,294
ya that is weird. You did the right thing to adjust it. I guess try more pressure.
I had the same issue with a non-adjustable BOV. It was cheap though.
I then bought a Greddy knockoff from eBay for $50. It worked perfect. Stayed closed, opened when it should.
I think NismoPick has the same BOV as you. Maybe he'll chime in
I had the same issue with a non-adjustable BOV. It was cheap though.
I then bought a Greddy knockoff from eBay for $50. It worked perfect. Stayed closed, opened when it should.
I think NismoPick has the same BOV as you. Maybe he'll chime in
09-25-2008, 12:49 PM
#6
Indeed I have the same one... I installed one washer / spacer & it works great. The only time it gave me probs is when the vac line split and then it wouldn't open the BOV all the way.
Do you have a dedicated vac line to it direct from the intake mani?
Do you have a dedicated vac line to it direct from the intake mani?
09-25-2008, 07:56 PM
#7
East Coast Style
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Join Date: Aug 2004
Location: Spartanburg S.C.
Posts: 536
Originally Posted by NismoPick
Indeed I have the same one... I installed one washer / spacer & it works great. The only time it gave me probs is when the vac line split and then it wouldn't open the BOV all the way.
Do you have a dedicated vac line to it direct from the intake mani?
Do you have a dedicated vac line to it direct from the intake mani?
09-26-2008, 01:12 PM
#11
East Coast Style
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Join Date: Aug 2004
Location: Spartanburg S.C.
Posts: 536
Originally Posted by Bleach
That's really good vaccum. Mine was at 19-20 and I've heard other engines have less at idle.
Got some custom copper head gaskets, little port work, and a whole lotta LOVE!
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