Plumb Back Bov's And Afm's

[retox]

Hey guys,

Curently doing my first turbo conversion and I've realised after purchase (because I was dog tired when I collected it and didnt pay much attention) that the motor I acquired does not have intake (from filter to turbo) or intercooler piping.

Now, this is no great drama... I have someone who can do all my piping for me for cost (yay!)... however, as not to advertise too heavily the fact that the car is 'pressurised', I was wishing to have a recirculating BOV.

My question is, I wont be running over 12psi (due to ceramic exhaust wheel), so is there any benefit in getting an aftermarket Plumb back bov... or will a stocker from another rb do the job just as efficiently if I pick one up second hand?

Also, as there was no intake (filter to turbo) piping, this also means it didnt come with an AFM. Now, I'm not sure if it will make a difference or not, but can anyone shed some light on whether an AFM from a rb30e will do the job, or is there a difference in AFM's between n/a and a/a (due to a/a sucking in the air a lot harder maybe?)

Can some light be shed to the n00b please?

Thanks

Tim

[GTAAAH]

The stock plumbback will do fine for what you want out of the engine (assuming 12 psi on a standard turbo) With an aftermarket bov, if anything, your looking at more lag after gear swaps, and once the bonnet is popped it will probably be pretty obvious

Edited April 11, 2007 by r32 gts-turbo

[retox]

Cheers mate. I'm running an rb25 turbo on it.

As for the bonnet being up, yeah, thats unavoidable... I was manly referring to while driving.... dont want ppl hearing a BOV coming a mile away.

[DRD-00F]

the stock bov off of RB's leaks... sorry to disagree with ^^^ that guy, but go buy an aftermarket plumback... a stealth one or something... youll find it holds pressure better and spools a bit quicker...

as for AFMs i dunno...

also, ask anyone in NSW, your not the n00b here, i am

[GTAAAH]

yeh, if they are getting old they can leak and hamper performance.. but bigger bov = more air expelled = even less air after changes. i forgot the other option, block the standard one off (coke can ftw) and go for the flutters. Helped mine out quite a bit, boost came in alot quicker after gear changes.. If you don't like pidgeon's i'd avoid it though i guess.. i like the sound

[retox]

can anyone else give info on the AFM question?

[bubba]

Pretty sure they're all different, to get it running just get another RB20DET item. Long term, find a z32 one if you plan on doing more work to the engine.

[R31Nismoid]

The stock BOV's leak, GTR ones do it too.

There is a reason for it

I think you need the RB20 AFM, i dont recall RB30e being the same.

Just check the part numbers

[nizmo_freek]

The stock BOV's leak, GTR ones do it too.

There is a reason for it

I think you need the RB20 AFM, i dont recall RB30e being the same.

Just check the part numbers

So do the stock gtr bovs still have the little hole on the base of the bov just like the stock rb20/25 ones?