Matchless
VIP MEMBER
- Joined
- Dec 23, 2010
- Messages
- 1,180
When I was at P&M a couple of years ago I was chatting with Dave about a TR7 motor he had built for a bloke. He used a Matchless type breather in the end of the crank. The drive side shaft is drilled to 1/4" dia & the valve fitted to the end & used to hold the alternator rotor on as per AMC twins. Dave reckoned that no oil came out. By coincidence, I have been working on my AJS CSR 650 today which is fitted with the very same setup, & the primary case oil did not appear to have been contaminated by any engine oil.
I did toy with the Manx style breather slot in the front chamber of my TR7 cases when I tried the Hemmings belt drive, but didn't want a breather pipe running up the front of the engine. With hindsight I should have done this.
I did toy with the Manx style breather slot in the front chamber of my TR7 cases when I tried the Hemmings belt drive, but didn't want a breather pipe running up the front of the engine. With hindsight I should have done this.