250r cylinder stamped PR

[mudge_77]

i bought an 85 250R a few months ago and the letters PR are etched into the cylinder just wondering if anyone knows what that stands for, i am guessing some work is done to the motor. any ideas?

[Dammit!]

Could be PR Racing Engines out of Toledo, OH. Back in the day they went by Power Rider. They did the work on my R motor.

[mudge_77]

well that might be i did purcase the wheeler in south eastern MI

[Dammit!]

I'd say it's very likely then. They didn't stamp/engrave mine. Not sure why but it's pretty common practice.

[mudge_77]

well the guy i bought it from didnt know much about it but i couldnt pass it upfor the price. someone had mentioned performance racing, i have no clue

[ditchmud]

Yep that is probably a PR racing cylinder. They are a local machine shop here in toledo. They do good work and are well known in the racing circuit.

[Kintore]

Yep PR racing, got a motor from them as well

[mudge_77]

well thanks i believe my mystery is solved.