Single Turbo RX-7's Questions about all aspects of single turbo setups.

best placement for BOV

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Old 06-13-07, 11:16 PM
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best placement for BOV

Hey guys, my car is sitting in my garage right now, im waiting for money for a new engine. In the meantime I want to weld my bov on my Greddy fmic on my s4 turbo. I was wondering the best place to put it, in front of the throttle body? What about the direction the bov realeases, does that even matter?


What is a good way to do the adjustment on the bov? how would I know if i am realeasing it too soon or too late? Thanks
Old 06-13-07, 11:32 PM
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As far as aftermarket BOV... just from looking at alot of other good examples, id put it on the cold side after the intercooler.

And for the adjustment... they way youl know its to tight is that you get a fluttering noise scince the spring and plate are so tight that it opens and closes fast over and over again.
Old 06-13-07, 11:42 PM
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Originally Posted by turBRO240
As far as aftermarket BOV... just from looking at alot of other good examples, id put it on the cold side after the intercooler.

And for the adjustment... they way youl know its to tight is that you get a fluttering noise scince the spring and plate are so tight that it opens and closes fast over and over again.
Ahhh bro, you come from the village of Glendale. I love zankou chicken! We got one in Pasadena. Im chinese but eat like an armenian. Haha
Old 06-14-07, 01:39 AM
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haha.... yes yes my village of glendale is doing well and prospering haha... come by somtime, I make armenian kabob every sunday


wait... didnt i see you at the last steve kan tune?... i was there on the day the red/black veildside fd was there... i was the one with the big afro type hair and the black RX7 racing jacket.

*sorry for thread jack *

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Old 06-14-07, 10:44 PM
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No, I wasnt at the steve kan tune, but I wish I was. I blew my engine because It wasnt tuned, no bov welded on my greddy fmic, and stock s4 t2 wastegate. DO you know if steve kan tunes megasquirt?

BTW are you armenian, bro? I dont know any armenians with fro's bros
Old 06-18-07, 11:45 PM
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Yes, im armenian.... to the 10th power ..... and for the fro... its not really a 70s black fro... but its close to the form, its big and its up lmao... trust me you gotta see it in person to understand lol.

Also unfortunatly, steve doesnt work with megasquirt.. and i quote him "I don't tune megasquirt since I'm not familiar with it and there's not much resolution on the system last I saw. I don't want to tune something that I don't feel was reliable to tune."
Old 06-19-07, 01:48 AM
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Doh! Thanks for the info. Where should I go for tuning now?
Old 06-19-07, 03:00 PM
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i say sell megasquirt and buy a PFC with the FD to FC adaptor
Old 06-19-07, 11:38 PM
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I dont have teh money for that. Maybe in the future when i get a better job. Thanks though. No Zankou for u!!
Old 06-20-07, 11:12 PM
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So my recomendation would be to run it on the turbo side before the intercooler. By doing this you wont disrupt air flowing to the trottle body and it will help release hot air instead or already cooled air. Just my recomendation.
Old 06-20-07, 11:18 PM
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not a bad idea either. Hmmmm, does it make that big of a differnce? Wont the air coming back in go through the ic again anyways? Most of the setups I have seen are on the cold pipe, but you make a decent point

Shouldnt you be diverting the air trying to get to your throttle body? I wonder how much of a difference it makes
Old 06-22-07, 12:22 AM
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So i may not be right but Im just working off logic, same reason why people take out the double trottle to cause less air distraction to increase air flow. The way I look at it is I want the lease path or resistance from the end tank on the cold side to the trottle body, you figure air biulds up in the intercooler formt he hot side and its funneled back into the cold side where you figure it keeps a constant presure all the way to the trottle body, if you put a BOV in between that your putting a hick-up in that flow everytime you Blow off, as well as releasing the already cooled air to the atmosphere. If you put the BOV in between the turbo and the hot side you are not only releasing presure of the turbo quicker, it is releasing hot air. The air flow is a circulation so if you vent on the cool side the air coming back in wont be cooled untill the next cycle. Once again this is just my logic I have in no way ever proven this. Good luck

Chris
Old 06-22-07, 01:33 AM
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Cool, thanks for the input
Old 06-23-07, 09:10 AM
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Originally Posted by initial D is REAL!
No, I wasnt at the steve kan tune, but I wish I was. I blew my engine because It wasnt tuned, no bov welded on my greddy fmic, and stock s4 t2 wastegate. DO you know if steve kan tunes megasquirt?

BTW are you armenian, bro? I dont know any armenians with fro's bros
he tried on my and really hated it, so i sold it and got a haltech, runs way better that i could have ever dreamed witht the squirt. just sell it and get a haltech!
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