Posted by L.A.B. on 7/20/2009, 11:12 pm, in reply to "Re: primary chain case oil"
82.22.53.127
<<can I have my crankcases machined (including drilling a vent hole, 2 fixing holes and a machined gasket face) to take a T140 type angled breather pipe on the rear of the inner primary side crank? - I'll obviously block off the original crankcase breather that comes out in front of the Main Rear Chain Drive sprocket. I would route the breather pipe out to the rear of the bike.>>
I've never heard of anyone doing that, (as owners normally want to do the opposite on the later models in order to fit a dry belt drive etc.) but I can't think of any reason why you shouldn't do so, if you wanted to?
The '70-on models also have a breather cover plate (71-1072) inside the primary case behind the clutch to reduce the amount of oil (mist) blown out from the breather, so you may need to fit a similar cover plate as I don't think the 71-1072 plate is likely to fit inside the earlier case without some modificatons being done?
<<If this is feasible doi I simply take out all of the mechanics from the old breather timing mechanism on the inlet Cam and or do I need to do anything else.>>
You could remove the timed breather mechanism, or you could simply leave it in position? But either way, you would certainly need to block off the breather outlet pipe.
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