R33 Gtst Blow Off Valve

[R33GOD]

im going to tune my car within the next couple of weeks and i dont want the hassle of the stock bov leaking whilst tuning it on high boost. At what boost do they tend to leak?

im not very familiar with bov's.

And if it does leak while tuning what can we do?

thanks

had a quick search. couldnt find the info i was looking for

Edited September 23, 2007 by R33GOD

[joeyjoejoejuniorshabadoo]

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[BAMR33]

pfffft, stock one is fine. BOV's are actuated by vacuum, so they don't open until there is a vacuum created i.e. when the throttle body is closed. The only reason for an upgraded BOV is if the stock BOV is not venting enough air at once causing compressor surge.

[USASKYFOURTY]

pfffft, stock one is fine. BOV's are actuated by vacuum, so they don't open until there is a vacuum created i.e. when the throttle body is closed. The only reason for an upgraded BOV is if the stock BOV is not venting enough air at once causing compressor surge.

I'm sorry, dont take this as me burning you. But the R33 GTST BOV is almost and quite literally is the 1G DSM BOV common to honda boosters. They do have a leak point and though they are vacume driven, they do have a limit, There is a port on the charge side that will OVER-RIDE the Vacume, this is a failsafe to fuel cut and overboost in the case that the OEM wastegate fails... You can see 14 PSI to 15.5 PSI BUT, there will be leakage. Aftermarket BOVs also have limits, but they can typically be changed with a simple spring swap... A good trick to bypass that BOV's leak point is 1st, block off that Bypass, and 2nd, this can be sketchy for some people, crush the top of the BOV in a little to compress the spring a little more to increase overall boost hold. I hope this helps.

EDIT: Though the Stock bov has trouble reverting boost pressure at about 15 psi.

Edited September 23, 2007 by USASKYFOURTY

[adam-__-]

The R32's RB20 bov start to leak at about 12-14psi if that helps in any way.