Bouncing BOV Prob! please HELP!

[rep003]

Hi All,

At first I was embarressed to ask about something as simple as a BOV , but,

after a week of asking all those "In the Know" without resolution , I'm over it!

I have put an RB26 into an R33 auto & everything else is sweet , but , at light throttle / low boost 5 to 10 psi the BOV bounces venting air like a train!

Tried: a number of BOV's both Piston & diaphram style

settled on a Turbosmart Type 2 Vee port

put a vacume/boost gauge on the signal line & checked for Pulses = 0

Tried every vacume/boost source I can find! Fuel reg , boost gauge ,

stepper motor , tank vent canister without sucsess , I even tried "T"ing some of them together.....

I believe that the multiple throttles on the 26 is what is giving me grief , I just cant find a source AFTER the throttles that is ballanced.

It cant be that hard..... this is :bs!:

I will donate my vital organs to anyone who can solve this problem

Cheers

Troy Rep

[NZM.031]

is it the bov?? tried removing it completley?? have you tried a HKS Super Sequential??

just wondering.

cheers

Linton

[caminperth]

Rep - I don't think you'll be able to find a source after the throttles that is balanced as there is no common area after the throttles due to having individual butterflies. There must be a way though! There's a link to workshop manuals on the SDU site. Thry finding that and the factory position/method may be revealed?