oilcatch1

LotusCarlton.co.uk

VXR8

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Oil Catch Tank
I want to make the tank out of aluminium, but first a prototype is needed to prove the
design and fit, this is all made of mild steel.
I am more than happy to accept and incorporate any better idea's for this tank, if anyone
has experience of making or designing these PLEASE contact me.

In the absence of a known internal design I have designed what I think looks ok.
There seems to be 2 sorts of tanks, catch and separator tanks.

The catch tank really only collects drips of oil from the engine breather, whereas the
separator design removes a certain amount of oil vapor from the breather fumes.
I want to remove as much oil as possible from the blowby gasses passed back
into the induction system.

Stainless steel kitchen scourer pads were loosley pulled apart and packed into the
bottom 2/3 of the tank. The tank incorporates a tube with dipstick so I can monitor
what oil collects, this will also act as the drain by inserting a tube with a syringe
to suck out oil.

The hose has to be oil resistant, in the end I visited a hydraulics company
who supplied me with 16mm bore and 19mm bore hose (I actually need 22mm
bore....still looking for this). Heater hose would eventually rot due to the oil.

There are 2 problems with connecting the feed back into the airbox, one end
is 16mm and at the airbox it is 22mm, I could get a hose manufactured but the cost
would run to about £350 with tooling and minimum order qty of about 50off.
The other problem was the bend radius to get from the airbox to tank is quite
small and would create too much stress on the pipe which could kink, for the same
reason I could not use 22mm bore which would have solved problem 1

For now I used a copper 22mm to 15mm reducer and short piece of hose
to connect to the airbox. Then a short piece of 15mm copper pipe and a 90deg
elbow to another short piece of 15mm copper pipe, the hose from the tank
connects to this.