Mike Rowe Posted March 12, 2009 Share Posted March 12, 2009 Hi guys I was previously told and purchased one HKS SSQV BOV for my twin turbo RB26. Now someone is querying whether it is large enough for the two turbos? Can anyone advise? thanks Quote Link to comment Share on other sites More sharing options...
Z24O Posted March 13, 2009 Share Posted March 13, 2009 hi mike i haven't heard of anyone running more than one aftermarket BOV on their big hp gtr,however you could check the diameter of the factory bov's and compare that to the valve area of the hks one i do know of a few guys that reckon the factory bov's are well up to the job, even on a modified rb26 Quote Link to comment Share on other sites More sharing options...
Mike Rowe Posted March 13, 2009 Author Share Posted March 13, 2009 Thanks Paul for your feedback. I have also heard this feedback the other day. Good idea regarding comparing them, I will have a look Finishing bits progressing well now. Off to Manila for 10 days & then back into it regards Quote Link to comment Share on other sites More sharing options...
TurboSE Posted March 14, 2009 Share Posted March 14, 2009 I was looking at adding a second Greddy Type R....but I think I'm just gonna go with one big TiAL Quote Link to comment Share on other sites More sharing options...
Z24O Posted March 14, 2009 Share Posted March 14, 2009 Thanks Paul for your feedback. I have also heard this feedback the other day. Good idea regarding comparing them, I will have a lookFinishing bits progressing well now. Off to Manila for 10 days & then back into it regards ....talk about racking up the frequent flyer points:icon44: Quote Link to comment Share on other sites More sharing options...
Mike Rowe Posted March 14, 2009 Author Share Posted March 14, 2009 all on different airlines unfortunately... Quote Link to comment Share on other sites More sharing options...
Zardilla Posted March 14, 2009 Share Posted March 14, 2009 Mike, The HKS valve below is what I am running on my RB26 with a somewhat similar set up as yours, so I think the SSQV should be fine (provided it can hold the boost level you will be running). http://www.racerwheel.com/hks-17670-006100.html Matt Quote Link to comment Share on other sites More sharing options...
dwarlick Posted March 14, 2009 Share Posted March 14, 2009 I have a related question. If you're running a TT, two MAF setup and factory ECU, is it ok to recirculate the BOV into the front turbo only? The front flange has a port and the rear does not. Quote Link to comment Share on other sites More sharing options...
Mike Rowe Posted March 15, 2009 Author Share Posted March 15, 2009 Thanks Matt for your feedback. Zardilla I am using an Apexi DJetro which doesnt use AFM's so I am only plumbing back due to licensing requirements here. However if you are using the whole standard setup then you will need to plumb back to both turbos otherwise the computer will not know what is going on. The standard setup does have a plumb back on the rear turbo into the hose rather than the alloy piece as fitted to the front turbo regards Quote Link to comment Share on other sites More sharing options...
Mike Rowe Posted March 16, 2009 Author Share Posted March 16, 2009 See the attached photo - you can see the hose off the front turbo coming off the BOV fitting and pointing back to another hose which is coming off under the rear turbo large hose. So the front turbo plumb back point is on the alloy fitting and the rear one is actually off the hose not the alloy fitting - see other photo of alloy fittings Quote Link to comment Share on other sites More sharing options...
dwarlick Posted March 16, 2009 Share Posted March 16, 2009 Thanks for the pics mate. I was thinking I had seen that before. That clarifies things. The only other question is would you have to have two BOVs to do this or could you use one bigger one (HKS SSQV) with a wye connection in the hoses that plumbs to both turbos? Might save a little money and its one less thing to break. Quote Link to comment Share on other sites More sharing options...
Zardilla Posted March 16, 2009 Share Posted March 16, 2009 dwarlick I was running a recirc set up on my engine before recently going to d-jetro. I used the single BOV and had twin pipes running back to the turbos (one each I believe). I'll look for some pictures of it tonight and post them up. Matt Quote Link to comment Share on other sites More sharing options...
Zardilla Posted March 17, 2009 Share Posted March 17, 2009 I took another look at the recirc piping I used to have on my car. We ran the inlet back from the BOV into the rear turbo, after the MAFs. This air had already been measured by the ecu but I don't think it was critical to split it between the two turbos (which flow into a single pipe through the IC. The engine ran pretty well, but I will admit it wasn't like the stock setup (twin BOVs, with single pipe back to each turbo). Quote Link to comment Share on other sites More sharing options...
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