Let the tinkering continue.....

[Transporter]

Greg,
if it is clean and no oil in the fumes, than just plug it back in inlet. I think that unless you plumb it in front of the DPF it will still smell from the exhaust.
When you diverting the air from Provent, did it improved the power somehow or is the engine running smoother - just asking because when I tried on my T5(no DPF) I had the same experience with it like you; just smell and steam at the traffic lights and no difference to the engine running.

[jayjay]

how far down would you need it with the particulate filter? i'm only guessing here but wouldn't burning oil be a big no no for clog-unfriendly DPFs?

i love the way you rationalise your mods. it's not like "i'm lazy, i'm going to the ecs tuning webpage, i'm buying $20k worth of shiny plastic".

[Transporter]

how far down would you need it with the particulate filter? i'm only guessing here but wouldn't burning oil be a big no no for clog-unfriendly DPFs?

i love the way you rationalise your mods. it's not like "i'm lazy, i'm going to the ecs tuning webpage, i'm buying $20k worth of shiny plastic".

Yes, you could damage the DPF with oily vapors, but since there would be no oil... I still wouldn't do it. Damage from the risk would out weight the benefit.

[Greg Roles]

I've not noticed one thing different with the blowby being total loss. Engine as per normal. Except the smell. Going to hook it up with one of those cool valves right after the DPF, and see what happens. Pre DPF is a mistake, as oil burns to ash, and this does indeed remain forever in the $5k DPF. Even blowby contains some oil, believe me i can smell it!!

No Transporter mate, going back to stock is NOT what I'm about! That's your way!!

[Greg Roles]

Yes, you could damage the DPF with oily vapors, but since there would be no oil... I still wouldn't do it. Damage from the risk would out weight the benefit.

No different to pouring it all into the inlet as per stock, the oil burns to ash, and the ash cannot be regenerated or burnt off. VW states this themselves in my material. ANY oil ash clogs the DPF, period. It's half the reason I'm doing what I'm doing, to avoid the sludge in the inlet, to avoid clogging the DPF any faster, and leaving more space for Oxygen!!

Despite the current smell, my DPF has just had a life expectancy rise!

[Greg Roles]

how far down would you need it with the particulate filter? i'm only guessing here but wouldn't burning oil be a big no no for clog-unfriendly DPFs?

i love the way you rationalise your mods. it's not like "i'm lazy, i'm going to the ecs tuning webpage, i'm buying $20k worth of shiny plastic".

Thanks dude, but the fact I DON'T have an unlimited budget is part of it....but also the challenge in making the "few off the shelf options" model quick. Like to pioneer and be different.

[Greg Roles]

After a bit of searching, found the exact valve the mad polo guy used:
http://store.summitracing.com/egnsea...115+4294821958

Will visit my friendly bogan parts shop tomorrow!

[gldgti]

ok.... transporter has made a good point about plumbing it back into the intake...

i think with the provent doing its job, maybe the best option IS just to plumb it back into the air inlet. this atleast ensures that any more vapours will be burned.....


OOOOHHHHH! i just had an IDEA!

ok, so we dont want oil filling up the intake, but we dont want to put the oil into the air or into the exhaust...

what if we plumb the provent air into the intake AFTER the intercooler and EGR - like just before it goes into the manifold... with a 1-way valve, so that it only vents during times when there is manifold vacuum? BEFORE YOU FLAME ME - i often see a little vacuum in my inlet when engine braking, due to the turbo and intake creating a little pressure drop....

i guess the only problem with this idea is long periods of cruise... it might work ok around town though. ok.. so its not the best idea.... but its a thought...

[philthy]

Awesome find Phil, thankyou! I'm onto one of those valves!

My Provent plumbed currently to air is nasty. All I can smell is burning oil at the lights, and at night, I can see the smoke in the headlights if the breeze blows that way. I have a new Provent insert. The pipe is still oil drip free,and the Provent is collecting liquid well but there's a LOT of blowby gas in the GT TDI. I have to dump it in the exhaust far enought up that it will burn, as even plumbing it out the back, is going to give you, and the car behind, that sickly burning oil smell. It's not good.

The upside is my inlet is clean, even if I'm giving myself lung cancer.

No worries. Hope it works.

Plautos certainly isn't scared to tinker, I think he's done lots more to his car then most of the local boys.

[Transporter]

ok.... transporter has made a good point about plumbing it back into the intake...

i think with the provent doing its job, maybe the best option IS just to plumb it back into the air inlet. this atleast ensures that any more vapours will be burned.....


OOOOHHHHH! i just had an IDEA!

ok, so we dont want oil filling up the intake, but we dont want to put the oil into the air or into the exhaust...

what if we plumb the provent air into the intake AFTER the intercooler and EGR - like just before it goes into the manifold... with a 1-way valve, so that it only vents during times when there is manifold vacuum? BEFORE YOU FLAME ME - i often see a little vacuum in my inlet when engine braking, due to the turbo and intake creating a little pressure drop....

i guess the only problem with this idea is long periods of cruise... it might work ok around town though. ok.. so its not the best idea.... but its a thought...

Good idea gldgti ... worth of trying just be sure that the one way valve have the cracking (opening) pressure lower than max. allowed pressure in the crankcase, so the seals don't blow out.

I think that the original set up is the safest one for the engine, only if VW would make the oil separation better. That would be the area where I would start to tinker, if I had the time.