201 replies to this topic

[techieboy]

Have you got a picture of the filler cap and are you looking to sell it?

 

Not to hand and not until I know I'm not going to use it. 

 

It's an all metal thing that has the screw in thread that the oem cap has but instead of the yellow cover it has a thin knurled section that you grip to undo it and the top half is an AN-10 (or -12 can't remember) thread to attach your choice of AN fitting and hose to. It came from US fleabay from a company called Metco.

[techieboy]

Turns out it's an AN-10 thread/taper

 

 

 

 

 

Found their actual website:

 

http://www.metcomoto...od=MBR0003-10AN

 

[fezzasus]

Still not an ideal way to vent crankcase pressure though as the air needs to get to the cylinder head.

[techieboy]

How's having that fitted any different to the OEM system then? Other than air has two possible routes in and out of the cam cover now?

[Exmantaa]

check the air routing in the cam cover. This vented cap will bypass all the OEM oil seperators..

[fezzasus]

How's having that fitted any different to the OEM system then? Other than air has two possible routes in and out of the cam cover now?

 

The OEM system doesn't vent through the cam cover, it draws fresh air in. The vent is in the cylinder head into the inlet manifold.

[CHILL Gone DUTCH]

How's having that fitted any different to the OEM system then? Other than air has two possible routes in and out of the cam cover now?

  The OEM system doesn't vent through the cam cover, it draws fresh air in. The vent is in the cylinder head into the inlet manifold.

Is this still the case under high rev driving ( track day) Mine was deffo blowing at croft As we have discussed earlier Pcv is not active under high revs This is the main issue I want to resolve there doesn't seem to be a issue under road conditions

Edited by CHILL Gone DUTCH, 13 April 2014 - 09:13 AM.

[fezzasus]

It's as I explained on the previous page, the flow reverses and comes out of the cam cover, however it's not the intended design as 99.9 % of these engines won't operate at continuos full throttle for any significant length of time.

[blueVX220]

There's the problem, it doesn't. It may draw air in at certain points but it also belches sh*t out through there at other points. My PCV vent to the inlet manifold is and will remain blocked as I don't want any sh*t getting into the manifold. Which is exactly what some of the LSJ guys end up doing by choice instead of by default like we've had to do. If this filler cap ever gets used and like I said, I don't think it will fit with a standard bonnet (and fcuked if I want a bodge job coupe conversion) it will be running through a 2 stage oil separator/catch tank with the option of a return to the sump (nice and easy with the same sump's turbo return).

[fezzasus]

There's the problem, it doesn't. It may draw air in at certain points but it also belches sh*t out through there at other points. My PCV vent to the inlet manifold is and will remain blocked as I don't want any sh*t getting into the manifold. Which is exactly what some of the LSJ guys end up doing by choice instead of by default like we've had to do.  

 

It doesn't stay in the inlet manifold, the majority of it is vapour and is burnt during combustion. There's really no issue with the design as it was implemented from the factory (with the caveats that the other engine parts are factory set as well)

[CHILL Gone DUTCH]

Is there a issue then and I just allow it to come out of cam cover? Is it necessary to introduce a vacuum ? Should I use a catch tank ?

[techieboy]

Fcuking twatatalk logged me in with an old test account. So there isn't another random argumentative person on here.

[Exmantaa]

some reading here: http://www.cobaltss....85/index15.html

[Bargi]

some reading here: http://www.cobaltss....85/index15.html

 

So the cap breather idea is no good then?

 

What are people worried about here?

The smell from the breather around town?

- Open PCV and accept a bit of oil might spit into the bottom of the manifold

 

Crankcase Pressure doing damage?

- Lots of SC engines been running for years now doing lots of TDs with current breather setup and I've not heard of any failures. Oil goes dark with soot quickly possibly but our resident oil expert thought it not to be damaging and again not heard of any failures due to this.

 

So leaves aesthetics of venting it all to atmosphere or some way to catch reuse?

 

Sorry one more...

My name is Techie and I don't want no muther fcuking oil in my muther fcuking manifold!

[CHILL Gone DUTCH]

I'm more bothered about the crank case pressure under high loads I'm happy with the Pcv under low loads I would also like to catch any oily residue from cam cover if we decide that is ample venting for the crank pressure

[FLD]

I'm more bothered about the crank case pressure under high loads  

Total seal rings

[haggi961]

Would you say its a good idea to stick steel epoxy on the PCV opening instead of silicone?

[Sutol]

The way I understand the pcv system is that whilst there is a vacuum in the intake Mani the valve will remain open. When the sc starts to come in and the Mani is positively pressured the valve closes otherwise you would increase the cc pressure even more. So would that mean that for track use the pcv valve will be closed by the end of the pitlane? ETA/by recircing from the can cover there will be the old problem of clogging up the laminovas.

Edited by Sutol, 19 April 2014 - 04:49 PM.

[haggi961]

Would you say its a good idea to stick steel epoxy on the PCV opening instead of silicone?

Anybody know? I would like to do this tonight so it's dry to fit all my parts back on tomorrow.

[haggi961]

Right this car is starting to annoy me. After my track day at croft I noticed oil around my inlet manifold so I stripped the car down and found out the oil was coming from the cylinder head hole and pushed passed the gasket so I thought maybe the oil had been topped up to much to cause this problem like Chrisuk had. Not a lot of oil got in but still meant I had to strip down my inlet and clean the laminovas, not a job I want to be doing again. So I rebuild it all and go for a drive to discover I have a boost leak somewhere. I strip it all down to find oil has got past the gasket and there is a oilly vapour inside my inlet again (SFSVX220 swearing) should there been any type of oily vapour inside the inlet? Does the Dutch software support it being blocked as it doesn't look like it? I don't want to run it open as I'm not cleaning the laminovas every month from oil getting in. Any help please as I'm pissed off with the vx now. I'm tempted to weld the hole up as it's annoyed me that much.

Edited by haggi961, 25 April 2014 - 08:09 PM.