Pressure in Cam Cover - Help

[Doug_RS2]

I've tested my cars intake hoses by pressurising it from just after the MAF.

On the S2 Power site they recommend not going over 30 PSI - fair enough, but I am getting pressure loss through the Oil Filler Cap when I get upto 15psi.

Is this normal? Is there a oneway valve somewhere in the breather system?

[SteveH]

Doug,

That sounds about right m8. We tested my S2 in the same way and found that oil bubbled out of the filler cap when we reached 15-17 psi. If the system had a leak, it wouldn't be able to get that high before it leaked somewhere else, so the consensus was that all was OK.

HTH
Steve

[audiman]

Those crappy filler caps I have bought several to stop the oil leaking, but they seem to only last about 6 months. Im just gonna glue the bastid on!!

[Doug_RS2]

Cheers guys - I suppose to check upto 30PSI it need to be tested at the turbo outlet.

[audiman]

So does this mean that you got a new boost hose?

Ive bought the Mark H intercooler mod and im gonna replace ALL the little bore tubing using hose clips to make sure that it is air tight. Then bring on the boost.

[Doug_RS2]

Before I decided to change the turbo I found a big hole in the turbo to intecooler hose right at teh t-piece tfor the diverter- I chopped that up - and stuck a nmetal tpiece in to fix it - not very nice though.

I was only getting upto a few psi and could hear a hiss - fixed that and got upto 15psi but it starting hissing out the oil filler cap.

I can't do much now as the turbo and all the intake hoses are lying around the garage.

I did the Mark H mod as well - it's hard to get that jubille clip in between the RS2 crossmember and the intercooler.

[Doug_RS2]

And this is the horrible T-piece in the Turbo Hose. It must be more restrictive than a normal hose so I might get a couple of 50mm-60mm 45degree reducer hoses and use a 60mm t-piece - especially since I'm sticking on the new turbo

[Doug_RS2]

Remembered to attach it this time:

[blu_s2]

its a fiddly little ****** on the stock S2 IC and x-member

[audiman]

Martyn said that it was tighter than.............. anyway.

I have to get it on there, these o rings are lasting about 1-2 months. If i turn the boost even higher then im gonna be doing it every weekend!!

[blu_s2]

i'm more than happy to bow to Martyn's superior knowledge of that tightness