Oil Catch Tank

[arj256]

After seeing a few of these on the Cup Racers, are these worth getting?
Im currently running a filter on the rocker cover, heard these are not very good as you loose the vacuum. Would this effect oil pressure?

Had a quick look on ebay, but theres not much there, i did a search, and not much came up apart from fred argueing with ben
Where abouts would a pipe go to feed it back into the sump?

Thanks.

[BenR]

what you want is breather area from rocker going to a baffled catch can. Have a return to the original airbox area.
Have the return going down to the bolt at the front of the block where the crank locking tdc tool goes.

[summeh]

sounds like a good idea to use the tdc bolt hole. is this what cup racers do, or do they not have a return?

[BenR]

i dont think they have a return.

[Lunner]

How important is a return?

Obvously if you regularly monitor it then i cant be a problem?

Is tehre a catch tank you recomend/can supply ben?

[BenR]

I like returns because it saves not draining it and adds a crankcase breather area.

I run moroso tanks from the states.

[arj256]

what you want is breather area from rocker going to a baffled catch can. Have a return to the original airbox area.
Have the return going down to the bolt at the front of the block where the crank locking tdc tool goes.

Cool. Out of curiosity why do you have a return going to the airbox? is that to create more air pressure?

I saw a guide about making your own, and the baffles where wire wool. This would be risky? as you could end up with fine bits of metal in your oil system?

Where abouts can you get moroso catch tanks from?

Thanks.

[Martin]

Forgive my ignorance but whats the benefit of these?

[BenR]

benefits is simply less oil vapour in the you inlet, less consumption and less octane contamination, cleaner burn.

making a DIY can is fine, but i wouldnt use wire wool, proper ally plate baffling is what you want.

I run 2 feeds to the inlet manifold, one into the airbox yes. Ideally you also want to place a flow facing slash cut to actively move air through the crankcase.

[ben_j]

y not just use a breather tho? its only vapour. u shouldnt actually be getting any oil coming out