porting for a 1973 sr292

[cdem72]

Does anyone have porting diagram for a single gp292 or know what the difference is with the sr292 that make the better hp? Thanks.

 

[montynormand]

The SR is a completely different animal. I once had a GP292 with the free air GYT kit pump out 52ish? HP on the dyno. It was fast for a 2 laps, but once the heat built up - everyone passed by. My SR292 pushed 64hp and still had more to be gained. Most of the really fast SR's around here are in the 68-70hp range. My wallet was not fat enough to get to that level and I eventually sold the ol gal

 

[cdem72]

I once had a GP292 with the free air GYT kit pump out 52ish? HP on the dyno. It was fast for a 2 laps, but once the heat built up - everyone passed by. My SR292 pushed 64hp and still had more to be gained. Most of the really fast SR's around here are in the 68-70hp range.

So would anyone have a dead cylinder or diagram to design from?