Oil crankcase breather - Return to sump

[Chilliman]

Anyone running a return to sump set-up? Be most interested in the configuration if anyone is...

Cheers,

Chilli

[phazed]

No but interested.

Shirley there must be an element of breathing still.

Rocker breathers to catch tank.
Return from catch tank to sump.
Small vent on catch tank.

Hang on, just knocking one up now to test

[Else]

Be careful, my catch tank mostly catches water

[phazed]

Else said:

Be careful, my catch tank mostly catches water

True, I emptied my old 4.6 one a couple of years ago and it only had water in!

[Chilliman]

phazed said:

No but interested.

Shirley there must be an element of breathing still.

Rocker breathers to catch tank.
Return from catch tank to sump.
Small vent on catch tank.

Hang on, just knocking one up now to test

Will have more info tomorrow! Suspect it includes a separator, catch tank, and return to sump, with atmosphere vent somewhere in the mix!

The open system I have at the moment has rust proofed the chassis, but my Dad complains about the oil drips on his drive when I visit I do know that when it was 'standard' the oil from the breather was sitting in a rather large pool in the trumpet base! Seems it sucks like a New Orleans er, well ya know

[phazed]

I had the "pool of oil" on the TB when I was experimenting, also a full catch tank.

I just have both rockers venting to air atm but I will fit a catch tank before the 19th.

[Chilliman]

Problem with my catch tank is that a) the inlet to it is too close to the filter on top, so it's pretty much blowing oil vapour straight out, and b) there's no drain. That said it's not catching the oil anyway! Back up to Snetts in the morning, the guys will have a diagram Seems to be all about having an effective separator....

Someone must have fitted a return to sump system to a RV8... I'll do some more interweb digging

[Chilliman]

phazed said:

I had the "pool of oil" on the TB when I was experimenting, also a full catch tank.

I just have both rockers venting to air atm but I will fit a catch tank before the 19th.

Peter, how did you fit an atmosphere vent to the passenger side rocker cover?

[SILICONEKID343HP]

I have this setup, not sure if it actually does anything.

[phazed]

Saw off the mushroom base and add a hose with a jubilee clip, simples!

[Chilliman]

SILICONEKID343HP said:

I have this setup, not sure if it actually does anything.

Daz, wip the plenum off and let us know if there's a pool of oil in there Take it you don't empty/check the catch tank on a regular basis?

Cheers mate,

Chilli

[SILICONEKID343HP]

Chilliman said:

Daz, wip the plenum off and let us know if there's a pool of oil in there Take it you don't empty/check the catch tank on a regular basis?

Cheers mate,

Chilli

No but i`m thinking of sticking some of those pads in the tank.

[Alexdaredevils]

Might be of some interest

I personally will be buying a moroso air/oil separator catch tank

http://www.lsxtv.com/news/video-moroso-airoil-sepa...

[QBee]

I don't think I've got an oil catch tank - car's completely dry underneath, no oil dripping. I feel short-changed.....

[SILICONEKID343HP]

Alexdaredevils said:

Might be of some interest

I personally will be buying a moroso air/oil separator catch tank

http://www.lsxtv.com/news/video-moroso-airoil-sepa...

Should it return back in to the plenum or just to atmosphere ? All those vapours might contaminate the fuel .

Does the breather the other side lubricate the throttle disc?

[Hoofa]

I have experienced crankcase breathing problems, wonder if the catch tank should return back into the inlet side of the charger to create some sort of vacuum ?

I have both sides vented into catch tank with a filter on it.

Need to sort the little one on the rocker cover at the back as that's chucking oil out

[phazed]

Hoofa said:

I

Need to sort the little one on the rocker cover at the back as that's chucking oil out

That often happens on performance engines especially if you have the baffle plates removed.

I cut my mushroom off, ( see above).

[macdeb]

phazed said:

simples!

Please bloke, no.

[Hoofa]

Yep your right no baffle plates as running roller rockers, just looked on the web and some installs do return to the intake from the catch tank


Also I have mocal tank, this doesn't to appear to have internal baffles


Hmmmm what to do

[Chilliman]

I was confused before I read this. Now I'm very confused!

http://www.britishv8.org/Articles/Positive-Crankca...