Scooterotica

Ive wanted to build an skool cast iron monster(ish) motor for my S2 rusty..
ive Managed to pick up a Kegra 225 cylinder ,Head Wosner piston to replace the old Kawasaki piston, 60mm/110 GP crank and 34mm Amal carb
the etched marking on the base of the barrel read KR414 BEST1087 ??? the inlet exhaust and transfers have been nicely opened ALOT but not sure of the port timings yet !! I need to do some home work with regards to when it was done. I had been told 1987 ???
I wondered if anybody had anything roughly to this spec back in the day and what it was like ??
Im planning on running my OTT Fresco which im currently using but wondered what wouldve been used back in the day ...
Any info greatly appreciated....

im running an old mb cast iron 238 ( I think) 58 x 110 crank 3mm packer plate ,rd 350 reed valve , kawazaki piston, 34 mil amal and a gori exhaust ive also tried a jl3 and an old pm on it , its not the fastest engine , my casa 225 loses it but it pulls well and tops out around 72 .

225worb,

The best answers to you question is probably either call Graham Best at Kegra, or build it and ride it. Graham had a good reputation for fast road bikes back then as he was at the top of the race grid in the 1980's. In fact, if you ring Graham with that number (414), he may well have a record of the original port timings (assuming this record wasn't lost in the fire).

I would suspect that in 1987 (I guess you have worked out that "1087" should probably read "1987") this barrel was a high performer, but don't expect it to end as flexible as a well tuned TS1 barrel or as fast as a Super Monza.

If you build the engine and have time machine, you could leave people standing in their tracks. As you haven't got a time machine, I suggest you buy into the idea that it will perform as it will perform, and enjoy the ride. It will certainly make a lovely noise, and I would love to hear it roar up the road.

Enjoy the build, and paste some photos as you go.

Gerry,

I don't think you have got close to answering the OP's question. The set up you describe is completely different.