bov?

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bov?

Postby smog7 » Thu Oct 05, 2006 5:06 pm

i have a 141xxx st185 and it is completely stock. what i wanted to ask was should i get a bov? i mean since the car originally didnt have one.... i dont really plan on doing a massive build, just something for daily driving... could not having a bov at this many miles affect anything?
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Postby hacker_720 » Thu Oct 05, 2006 5:18 pm

nope, you're fine. I recomend getting one. If nothing else it sounds cool.
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Postby Gary ST165 » Thu Oct 05, 2006 5:26 pm

i would not recommend getting one as it will potentially mess up your fuelling.... (read as overfuelling/poor economy etc)

from my experience 165/185 Air Flow Meters and BOVs that dump to atmosphere do not work well together.

leave it well alone imho. Especially if at stock boost.

perhaps only consider a re-circulating BOV if running higher boost.
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Postby hacker_720 » Thu Oct 05, 2006 5:38 pm

not that i'm starting an arument, but I have on on my car, and it's not really an issuse, in theroy it's a problem, but in praticality it's never caused any problems. I just didn't like the idea of closeing the throttle, and having the turbo still trying to create presue in that small space.
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Postby smog7 » Thu Oct 05, 2006 5:46 pm

what parts should i be looking for then? i will be getting a complete gasket kit in the future.... what else should i look into?
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Postby hacker_720 » Thu Oct 05, 2006 6:05 pm

you Just have to get it welded to your stock Top Mount intercooler, or get a 'T' hose. I think 935 motorsports sells onE. Looks like I might be getting a new TMIC really soon, I would sell you my old one with a BOV already on it.

like so:

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Postby Mafix » Thu Oct 05, 2006 6:15 pm

jesus you've got that bov loose enough on the adjustment screw.
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Postby hacker_720 » Thu Oct 05, 2006 6:44 pm

Thats not the stock screw, I lost that, it's just a bolt I had laying around that fits. I actually have it pretty tight, if I do sell it, I will go and get a properly sized screw.
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Postby syko says » Thu Oct 05, 2006 6:45 pm

Mafix wrote:jesus you've got that bov loose enough on the adjustment screw.


:lol:

thats really funny. and for the t-hoses. i thought only certain bovs could use those? i could be wrong. but since certain ones uses t-hoses, others may need a flange welded on. like that greddy type s.
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Postby smog7 » Fri Oct 06, 2006 1:51 am

for how many miles will the stock turbo usually last?
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Postby CryoGoblin » Fri Oct 06, 2006 2:23 am

Gary ST165 wrote:i would not recommend getting one as it will potentially mess up your fuelling.... (read as overfuelling/poor economy etc)

from my experience 165/185 Air Flow Meters and BOVs that dump to atmosphere do not work well together.

leave it well alone imho. Especially if at stock boost.

perhaps only consider a re-circulating BOV if running higher boost.



hehe were driving awd, turbo'ed old cars, fuel economy should not be an issue
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Postby theUNYTEDone » Mon Oct 09, 2006 8:31 am

i doubt having a BOV fudges your fuel economy anything special. if it did then without it i'd be running like 30mpg!!!

i've gotten 25 on my setup
fmic
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SARD R2D2 BOV
s'about it...
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Postby Gary ST165 » Tue Oct 10, 2006 1:45 pm

Most UK 185/ata/RC/ CS owners do report 30+ mpg without a BOV ;) and better running / less stuttering etc. The cars never came with one, so why fit one if running stock boost?


RE: fuel economny / overfuelling

>>>>> Over fuelling robs power, and causes borewash/increased wear. Fuel economy is not my main concern for a Turbo AWD, but good power (Air Fuel Ratio) & reliability most certainly is!

Use a recirculating piston style BOV if running higher boost:
http://www.forgemotorsport.co.uk/conten ... ct=FMDV006

This will allow the ECU to provide far more accurate fuelling for the metered air flow. Rather than loosing the metered air and the ECU compensating by adding even more fuel... catch22
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Postby db » Tue Oct 10, 2006 2:36 pm

I didn't notice a difference between before my Blitz blowoff valve, and after it, fuel mileage wise. And I check the miles per gallon at every fill up.
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Postby theUNYTEDone » Thu Oct 12, 2006 8:33 am

heh...i guess i can't compare, unfortunately, as i've never NOT had a BOV.

car came with a gay turboxs type s on the stock TMIC

then when i went FMIC i went SARD R2D2
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