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Engine Specific Info and Questions => IDI Engine => Topic started by: adi on March 26, 2011, 12:52:27 pm

Title: BOV location?
Post by: adi on March 26, 2011, 12:52:27 pm

I've been searching long and hard online and cannot find the location of the BOV! I know its on the inlet manifold but these engines are completely new to me and I don't really know whats what to be honest! What would be the immediate effects if I was to block it off on standard tune?

Title: Re: BOV location?
Post by: RabbitJockey on March 26, 2011, 12:58:10 pm

search bra theres lots of pictures and instructionals on this topic

Title: Re: BOV location?
Post by: adi on March 26, 2011, 02:19:39 pm

I did that but no pictures?

Title: Re: BOV location?
Post by: nathan_b on March 26, 2011, 02:29:51 pm

You might not have one, but it is the only thing ON the intake manifold really.

Title: Re: BOV location?
Post by: rabbid79 on March 26, 2011, 04:03:47 pm

If I'm not mistaken, the Eco-diesels didn't have them, and neither did most of the 1.9s.  What engine do you have?

Title: Re: BOV location?
Post by: adi on March 26, 2011, 11:08:39 pm

SB code 1.6 TD (mk2 golf GTD) with intercooler above the battery...

Title: Re: BOV location?
Post by: blackdogvan on March 27, 2011, 09:00:25 am

Nope, all wrong. BOV goes in the trash.

Title: Re: BOV location?
Post by: R.O.R-2.0 on March 27, 2011, 09:25:22 am

Quote from: adi on March 26, 2011, 11:08:39 pm

SB code 1.6 TD (mk2 golf GTD) with intercooler above the battery...

pretty sure that particular engine never got an over boost protector...

no VW diesels got an actual BOV..

Title: Re: BOV location?
Post by: adi on March 27, 2011, 10:05:32 am

There is a round black platic thing on the number 1 piston side of the inlet manifold, what is this?

Title: Re: BOV location?
Post by: R.O.R-2.0 on March 27, 2011, 10:06:26 am

thats your overboost protector, appearently SB engines do have the protector (BOV to all those who dont know any better)

Title: Re: BOV location?
Post by: adi on March 27, 2011, 10:09:07 am

So what do I do with it?

Title: Re: BOV location?
Post by: R.O.R-2.0 on March 27, 2011, 10:21:58 am

take the hose off of the side of it, insert a wine cork, and trim the end of the cork off flush with the hose nipple..

Title: Re: BOV location?
Post by: adi on March 27, 2011, 10:41:11 am

Wouldn't it just blow the cork back out when I adjust the boost?

Title: Re: BOV location?
Post by: R.O.R-2.0 on March 27, 2011, 10:58:48 am

yea, if your running like 100 psi (6.9 bar) then you might blow the cork out.

Title: Re: BOV location?
Post by: adi on March 27, 2011, 11:43:25 am

sorted it, shoved a thin bolt where the spring should go, thats not gonna open ever again! Also turned the smoke screw in 1/2 a turn. Made a small difference to acceleration.

Title: Re: BOV location?
Post by: R.O.R-2.0 on March 27, 2011, 12:29:14 pm

i would have used the bolt and wine cork.. the diaphragm in the OBP is just a sheet of rubber.. it could still potentially leak, i would use the screw and the wine cork ideas.. that will never leak..

i drilled a hole thru my OBP and ran a bolt thru it with a rubber gasket on the inside..

Title: Re: BOV location?
Post by: adi on March 27, 2011, 12:31:36 pm

Yea maybe I will cork the hose outlet too  :)

Title: Re: BOV location?
Post by: damac on March 27, 2011, 02:31:44 pm

I have left mine alone because I was scared to mess with the stock setup.

Is it possible that having one installed could lead to some black puffs of smoke at full throttle and stop the turbo from spinning up as fast?

Title: Re: BOV location?
Post by: Vincent Waldon on March 27, 2011, 02:50:20 pm

Nope.

The BOV is really just a safety device that releases if the turbo should over-pressure... which it will never ever do with stock fueling and a working wastegate.   VW removed them from later versions of the engine...even if the turbo overboosts a bit the engine won't mind.  ;)