Fitting breather to aftermarket rocker cover

[minitravellerman]

Out of curiosity, I have an alloy rocker cover that I was thinking about fitting, but it doesn't have a breather. Does anyone have any suggestions for a self sealing take-off that can be used. Suppose other option is to have a breather welded to the cover.

[rich@minispares.com]

drill and tap it 5/8 unf and use a servo take off stub

1/2" hose can then just be pushed onto it

[JC T ONE]

Funny you asked about this, I am also thinking about fitting one to my rocker cover.

What would you guys concider being the best place, regarding "oil splash"

I have seen some race Mini,s where the oil breather take off, was fitted in the end of the cover.

I belive this would minimize the oil splash back, as the end of the shaft & its post will "cover" it up a little.

What do you guys think ?

[minitravellerman]

I was thinking of fitting the breather to mine as per the original rocker covers to let the pipe connect to the airbox.

[minitravellerman]

Rich - you'd recommend tapping the cover and using this - http://www.minispares.com/product/Class ... o%20search ?

Thanks

[rich@minispares.com]

Rich - you'd recommend tapping the cover and using this - http://www.minispares.com/product/Class ... o%20search ?

Thanks

I used them loads of times, all you need is a 5/8 unf tap and its easy

[ianh1968]

Something like this might be better...

This is a taper thread, so with a little PTFE tape will be self sealing when tightened up.

It also has a spanner hex, so will be easier to fit.

http://www.hoses.co.uk/adaptors-and-fit ... -hose-tail

Good ol' fashion plain brass ones are also available:

What I did was get a plain brass 3/8" BSPT one, a 15mm copper elbow and a short length of
copper tube. I sawed off the brass fitting and soldered the elbow and short pipe to it. Next,
I filed/sanded off all the surplus solder then finally I got it plated to make it look nice.

NB: 3/8" BSP is about the same diameter as 5/8" UNF. ( and 19TPI vs. 18TPI )
NB2: 5/8" UNF is the same thread as the temp sender hole in the cylinder head.
NB3: 3/8" NPT could also be used if you want to use American Pipe Threads.

I use 14mm ID hose - this is a push fit and does not need a clip. The other end goes to
a Tesco hand soap bottle over by the wiper motor. The pipe enters the bottle via a 90 degree
plastic 15mm elbow which just pushes straight into the 14mm pipe, again, without a clip.

I fitted this before the fancy oil cap, but it is still possible to unscrew it by punching the
hinge-pin out of the oil cap lid and taking it off.

So far as "oil splash" is concerned, very little of anything comes out of this - far more
water/oil/gunge is collected from a similar catch-tank connected to the transmission case.