fg0d

How would one go about replacing the stock bypass valve with an aftermarket bov. Does it require fabricating a intercooler pipe, or welding on the adapter piece for the aftermarket bov? Some help please..

JackoliciousLegs

YESSS!!! I've been waiting to say this... go here.

It's a thread started by yours truly. That's the BEST way to do it. LOL. ok, so maybe it's just the cheapest

Madrx7racer

like you said...I couldn't hear it in the video....how would you describe it?

JackoliciousLegs

a woosh. At over 8psi, it flutters like a wrc car. It's loud, but not abnoxious.

fc3seeker

If you get the BOV kit with the pipe for the FC all you need besides that is a plug to put into the intake where the stock bov was. Kragen sells the 3/4" expandable plug you need for $2.37.

White_FC

Hahaha, so its not releasing enough pressure to prevent compressor surge then? (the fluttering)

No point in having one if its not releasing enough pressure to do that.

However, I also think that compressor surge isn't as bad as most people make it out to be, (stock) BOV's are more of an emmions/noise control device than to promote turbo reliability.

Open air venting BOV's are just a **** value rice mod.

But this is getting a little bit off topic now so i'll shut up.

Ps, No WRC cars don't run BOV's at all(except the EVO's)

*edited to make a little more sense to most people*

J-Rat

iTrader: (2)

What do you expect from the Home Depot mod?

NZConvertible

Actually, like I said in that thread, that's far from the best way to do it. From the noises you describe you are in fact causing compressor surge. Please do no recommend mods that can potentially cause damage. If you really want to open-vent the stock BOV, follow the link I posted in that thread.

At stock boost levels compressor surge probably isn't that bad, but once you start turning up the wick it becomes a more serious issue. You're right about stock BOV's though, manufacturer's only fit them to make the turbo quieter (not for emissions).
I totally agree.

bcty

turbo xs best easlyest upgrade.. get the type S.. installs in like 2 min useing the stock rubber hose..

NZConvertible

So it's not even bigger than stock? What's the point? Oh right, the noise...

J-Rat

iTrader: (2)

No, so you can run a custom TID without havng the plumbing problems of recirculating the relief air...

Dont you ever get tired of being a smartass?..

White_FC

Yeah sorry I should've clarified that a little bit. But your right it could potentially be a very serious issue when your running huuge amounts of boost and it produces a violet surge not just a gentle surge...

Which I know for a fact wont happen on a S4 13b until at least after 15psi.....

fg0d

That's probably the best way to go than instead of dealing with all the fabrications and what not. Thanks alot guys.

NZConvertible

That's easy. An exhaust shop could weld a nipple to a custom TID for considerably less money than the cost of a new BOV.

But if you're going to spend all that money on an aftermarket one, I just figure you might as well upgrade instead of getting one that works no better than stock.
Hell no, it's far too much fun.

J-Rat

iTrader: (2)

Actually, the Turbo XS is rated for higher boost pressures.. And it sounds REALLY COOL!!

NZConvertible

Fair enough, I'll give you that. But you still only need it if you run enough boost to make the stock BOV actually leak. Anybody actually tested that?
Ha! Busted, you ricer!

J-Rat

iTrader: (2)

LOL!!!

Actually, I know that I run enough boost to necessitate the need for an aftermarket BOV. The stock BOV leaks constantly anyways!

As far as the sound..Thats just a nice perk.

NZConvertible

Do you know what boost level it started to leak at? I'm curious.

White_FC

Well my $25 plastic bosch one apparently only starts to leak at 14psi...

Presumably it is close in specs to the stock rx-7 BOV.

Jaared

typhoon stage 2 bov... search ebay. dont get the stage 3 with the funny horn... get the stage 2.

$40 shipped. 15 sec install. I made a thread about it when i got mine 5 months ago. search for it.


EDIT: found the thread...

https://www.rx7club.com/showthread.p...hreadid=265712


and here are a few of them on ebay.

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2456791417

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2457006259

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2457006273

J-Rat

iTrader: (2)

I suppose the statement your fishing for is "No NZConvertible I dont know".

The only proof I had of leakage was the inability to run it without the relief valve recirculated (I.E Vac leak). Whether or not it was leaking under boost or not, I dont know. I can probably rig a ghetto pressure tester to it and see.

Digi7ech

iTrader: (1)

I got the Apexi BOV with the FC pipe kit so it goes right in.

I got it because my engine didn't have one on it when it was shipped to me

NZConvertible

Wow, that one mst be good because "This is a TRUE JDM product". Yeah, whatever man...

BTW Jaared, the thread you linked was about some dude's gearbox...

Damn.
Ah, that's a totally different kettle of fish. If you go to the thread JackoliciousLegs linked to at the beginning of this thread, there's a link in there from me that shows how to stop open-vented stock BOV's from leaking at idle.

Jaared

LoL the people that write the ebay add are not the people that make the bov. There are more of the same BOV on ebay right now FROM tyfoon and they are 79.99 "buy it now".

The links i put were for the same bov but at a cheaper price because they are sold through another seller.

Yea i mis-linked... my bad. i thought that YARRR thread was funny and had it in my clipboard... my bad.

Apexi and all the other super name brands are nice... maybe nicer than the one i got.. but they are tripple the price. Im happy with mine. Thought id share to the other broke 2nd gen owners... if we had lots of money we would have fd's.

J-Rat

iTrader: (2)

Yes, I know... you put a one way check valve inline after the relief system.. In my younger days, I tried this. I can pressure test the relief valve, but my results would be inconclusive unless I had a bunch to test.

Now my question. Why are you so diametrically opposed to aftermarket BOVs?