ccv removal

[cheshire cat]

does anyone know how to remove the CCv fitting from the cam cover on top of the PD engine, for pref' without removing the whole lot first, or even if it is removeable or "welded" in cheers Nic

 

[prc]

It's held in place with a clamp IIRC. I've got some pics around here somewhere..

 

[cheshire cat]

thanks Paulo, a pic would be usefull, IIRC ?

 

[sssstew]

IIRC = if i remember correctly.

but from what ive seen of the PDs its simply clamped in place as paulo says, so a quick un clamp and then do the business with a bypass system.

 

[samm]

IIRC = if i remember correctly.

but from what ive seen of the PDs its simply clamped in place as paulo says, so a quick un clamp and then do the business with a bypass system.

Please excuse my ignorance guys but what exactly does doing this achieve??

 

[prc]

Please excuse my ignorance guys but what exactly does doing this achieve??

A couple of things:

most important is that you won't get oil into your intake system + intercooler. If you remove your IC after 50K and look at the gunk that's deposited there you see why.

you'll also get more cooler air from the exterior (via airbox) + it'll be measured by the MAF.

 

[samm]

A couple of things:

most important is that you won't get oil into your intake system + intercooler. If you remove your IC after 50K and look at the gunk that's deposited there you see why.

you'll also get more cooler air from the exterior (via airbox) + it'll be measured by the MAF.

So if this is the case, why do they not design it to stop this or bypass it from new? Surely the intelligent people @ VAG know about this and would deem it a problem?

 

[sssstew]

all to do with emmisions targets i beleive.

 

[muddyboots]

A couple of things:

most important is that you won't get oil into your intake system + intercooler. If you remove your IC after 50K and look at the gunk that's deposited there you see why.

you'll also get more cooler air from the exterior (via airbox) + it'll be measured by the MAF.

How does it make you get more cooler air, I thought the CCV gunk gets added downstream of the MAF so it wouldn't know any different ?

 

[sssstew]

well rather than the combustion cycle sucking in air from the CCV pipe which is a bit oily and not as clean and crisp as fresh air, by passing the ccv allows all the intake air to come from the outside thus more rich in oxygen and cooler for a better combustion.

Erm not sure about the MAF, sorry paulo but its pre CCV and EGR as muddyboots says.

 

[samm]

OK, so when it comes down to it, is it really worth doing? Also, are there any pics of how to do it?

 

[prc]

OK, so when it comes down to it, is it really worth doing? Also, are there any pics of how to do it?

The cold air bit is exactly as mentioned by Stew. I'm not saying that it's a bit performance upgrade, but it will save you having to clean out you intercooler and intake tubing every so often.

As for pics...there are some around. I have been promising an guide, but just haven't had the time to get around to it.

 

[sssstew]

Theres some links in the TDI FAQ about CCV bypass stuff that paulo has done, also theres loads on tdiclub.com forums for example :-

http://www.angelfire.com/wi3/rks/ccv.html

http://forums.tdiclub.com/showflat.php?Cat=&Board=UBB3&Number=12846&page=&view=&sb=5&o=&fpart=3&vc=1

http://forums.tdiclub.com/showflat....d=allposts&Main=475276&Search=true#Post494787

and yes its worth doing if u can be bothered, if done along with turning the EGR off you can elimiate the oily deposits in your intake and intercooler, when mixed they do this :-

http://forums.tdiclub.com/showflat.php?Cat=&Number=678875&page=2&view=collapsed&sb=5&o=7&fpart=1

 

[samm]

Hmmm, think I'll leave that for now. Don't like the look of garden hose in my nice shiney engine bay. I don't think it is very warranty friendly either!

 

[muddyboots]

I'm not saying that it's a bit performance upgrade, but it will save you having to clean out you intercooler and intake tubing every so often.

OK, so it isn't a performance upgrade as such, but it might reduce any degradation that would otherwise happen over time due to everything clogging up with oily shite...

 

[cheshire cat]

It's the actual fitting in the cam cover top not just the pipe to the inlet tract. Oily shite about sums it up, even after just a few thousand miles. I hadn't considered the -volume- of HOT oily gas going back in there but it must be considerable when turning over at a few thou rpm. If this is the only design fault we are doing well.

 

[prc]

All cars come with a CCV & EGR valve. It just works out worse on IC equipped cars because all the junk gets deposited there.

 

[cheshire cat]

ccv

Theres some links in the TDI FAQ about CCV bypass stuff that paulo has done, also theres loads on tdiclub.com forums for example :-

http://www.angelfire.com/wi3/rks/ccv.html

http://forums.tdiclub.com/showflat.php?Cat=&Board=UBB3&Number=12846&page=&view=&sb=5&o=&fpart=3&vc=1

http://forums.tdiclub.com/showflat....d=allposts&Main=475276&Search=true#Post494787

and yes its worth doing if u can be bothered, if done along with turning the EGR off you can elimiate the oily deposits in your intake and intercooler, when mixed they do this :-

http://forums.tdiclub.com/showflat.php?Cat=&Number=678875&page=2&view=collapsed&sb=5&o=7&fpart=1

thanks for the links ssstew, I had thoughts of making something like the "OLD NAVY" type but obviously need to remove the VW one first to see how it's fixed, cheers Nic

 

[sssstew]

no worries matey, happy to help as always.

Those old navy ones look lovely, nice and shiney! i want one, shame the shipping would be too much really to make it worthwhile.

 

[Tom_vRS]

Sorry to dig an old thread up - BUT...

Are there any commercially available CCV bypass kits, or only home made DIY jobs?