catch tanks

[JT]

I am having problems with the catch tank set up.
I have removed the pcv,blanked off the sump entry. camcover and block entries have been tee-ed together and piped into the tank,the other pipe from the tank is just to atmosphere.
I'm getting oil coming out of the catch tank??????

It has been suggested that i use the drain plug to recirc the oil from the catch tank back into the sump which I can do, but I am worried there may some underline problem as to why there is so much pressure at the catch tank,enough to spit the oil back out!?

any ideas anyone??

JT

[M-R-P]

The pcv on a P2 has a small pressure feed from the inlet manifold, a banjo bolt with a small coolant pipe round it with a small pipe teed into the o/s top connection on the original catch tank. maybe that's doing it (I don't know if you have an ME7 manifold but I think the 850 mani has it too) I suppose it depends on how much of the original pcv you have left.

[oblark]

I am having problems with the catch tank set up.
I have removed the pcv,blanked off the sump entry. camcover and block entries have been tee-ed together and piped into the tank,the other pipe from the tank is just to atmosphere.
I'm getting oil coming out of the catch tank??????

It has been suggested that i use the drain plug to recirc the oil from the catch tank back into the sump which I can do, but I am worried there may some underline problem as to why there is so much pressure at the catch tank,enough to spit the oil back out!?

any ideas anyone??

JT

Is the pipe that goes to atmosphere open or do you have a filter on the end ?

[claymore]

Sounds to me like you need to baffle the tank, or put some wire gause in it.

[JT]

The pcv on a P2 has a small pressure feed from the inlet manifold, a banjo bolt with a small coolant pipe round it with a small pipe teed into the o/s top connection on the original catch tank. maybe that's doing it (I don't know if you have an ME7 manifold but I think the 850 mani has it too) I suppose it depends on how much of the original pcv you have left.

pcv has gone! lol

Is the pipe that goes to atmosphere open or do you have a filter on the end ?

open at the moment.......

Sounds to me like you need to baffle the tank, or put some wire gause in it.

well I have found a baffled catch tank,I was thinking of trying one?

[Jamest5r]

You sure u not got a blockage on the outlet side? If not just do away with the tank and vent to air and see if it breaths ok

[JT]

outlet side? lol
it breaths ok when on idle,its just when I put it on the track

[Jamest5r]

Just do away with the tank altogether

[JT]

then i would be spilling out even more oil????

the tank was half full after only 5 laps!

[Jamest5r]

When you say oil do you mean actual oil?? My tank fills with white gunk and water ish stuff lol

[JT]

definatly oil

[Jamest5r]

That ain't right then?? It's only supposed to be the vapours venting surely??

[JT]

thats what i thought????

[merc85]

Any smoke from exhaust? Bigrotch had a Cracked piston ring similar symptoms.

[claymore]

Sounds like your rings are on the way out.

EDIT: Merc beat me to it

[JT]

only had new ones put in back in January????

[merc85]

only had new ones put in back in January????

were the bores good? do compression check buddy to be sure.

[Jamest5r]

only had new ones put in back in January????

Onto standard pistons or oversized??, as Merc say's comp test, also didnt you say marsall's pulled you and told you about blue smoke on over-run?, that suggests oil pushing past the rings unfortunatly mate.

[oblark]

definatly oil

If you`ve got "oil" in your catch tank then the sump is being pressurized, this would also explain why you have oil leaking from the side of the engine.

When the engine is running do you have air coming out of the dipstick tub ?

I agree with everyone else and do a compression test.

[Volvostorm]

Mine use to smoke on the over run too, rings were ok, it had 0..30 of bore wear, in the middle of the bores