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What Is This Part?

Crackfox

By Crackfox,
in Engines & Forced Induction

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Crackfox Community Regular

Crackfox

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I just picked this up as advertised an an "r33 recirc valve" however Im thinking that this isnt what it is. I sort of suspected this when I bought it but it was just a fraction of the $50 that most people charge for one on this site. Can anyone tell me what it is? or if it is possible that I could use this on my 33 gtst?

post-60059-1255849643_thumb.jpg

Edited by Crackfox
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Crackfox Community Regular

Crackfox

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I am pretty sure that it is a GTR type twin recirc valve and I am currently fitting one of the recirc valves to my skyline, I'm currently installing it and will see how it goes, looking like the only modification needed will be from the different pipe sizes which is an easy fix. Will see how it runs soon

Crackfox Community Regular

Crackfox

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OK so its a GTR bov? not bad for $10 then I guess:p The guy selling it didnt know much about it, he drove an audi and when I asked which model skyline he used to own he said he had never even owned a nissan so I dunno how he obtained it.

I have taken one of the recirc valves off and installed it on my skyline. Is the only difference between the gtst and gtr recirc valves the pipe sizes on the larger end? can anyone confirm this or are is there other changes as well?

Seems to run fine with the new recirc valve, now it makes a funny "pchieww" type noise instead of pshhhhttt at gear changes, the cars responsiveness also seems ever so slightly decreased though it is a very subtle difference which is expected I guess. The cars small backfiring issue and occasionally lumpy idle also appear to be solved.

08r3308 Mentor

08r3308

Posted
Posted
OK so its a GTR bov? not bad for $10 then I guess:p The guy selling it didnt know much about it, he drove an audi and when I asked which model skyline he used to own he said he had never even owned a nissan so I dunno how he obtained it.

I have taken one of the recirc valves off and installed it on my skyline. Is the only difference between the gtst and gtr recirc valves the pipe sizes on the larger end? can anyone confirm this or are is there other changes as well?

Seems to run fine with the new recirc valve, now it makes a funny "pchieww" type noise instead of pshhhhttt at gear changes, the cars responsiveness also seems ever so slightly decreased though it is a very subtle difference which is expected I guess. The cars small backfiring issue and occasionally lumpy idle also appear to be solved.

just get a mirage 1.5 radiator hose and cut it and it will fit to gtr bov and gtst stock plumb back piping :cool:

i posted the part number sum where but cant seem to remember what part number it was

Crackfox Community Regular

Crackfox

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just get a mirage 1.5 radiator hose and cut it and it will fit to gtr bov and gtst stock plumb back piping :cool:

i posted the part number sum where but cant seem to remember what part number it was

I just connected it by putting a piece of the smaller gtst bov type piping inside the larger gtr rubber piping, and then put a radiator clip thingie on it and joined it as normal. I don't think its leaking but I may test it further just to be sure.

The Dan Grand Master

The Dan

Posted
Posted
I just connected it by putting a piece of the smaller gtst bov type piping inside the larger gtr rubber piping, and then put a radiator clip thingie on it and joined it as normal. I don't think its leaking but I may test it further just to be sure.

*cough* dodgey *cough*

Crackfox Community Regular

Crackfox

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*cough* dodgey *cough*

Why is it dodgey? Its a more secure fit than the stock plumback connection, if any connection does fail on my installation work it wont be this part. Anyway I would rate my work as alot better than the very messy previous atmospheric blow off valve installation.

PM-R33 Grand Master

PM-R33

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Posted (edited)

Well the GTST ones aren't too flash for high boost and they do have a little hole in them that leaks off air a bit. People weld this up and then supposibly its fine for high boost. No idea why it is there from factory, maybe some one else can explain that. Perhaps a safety for a boost spike so it bleeds it off? I believe the GTR ones don't have this hole hence why they hold higher boost fine.

Edited by PM-R33

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