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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.
- Fitting requires a single hole
to be drilled into the bracket next to the
- 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.
- It is a bit of a compromise
and I'm not entirely happy with it at the moment,
- the elbow joint is partially
obscured by some pipe work which runs over the
- top of it so it does not
look so bad when installed.