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Workshop => Engine and Bottom End => Topic started by: The norm on June 24, 2017, 07:24:50 PM

Title: Help me identify this engine builder
Post by: The norm on June 24, 2017, 07:24:50 PM

A buddy just bought an 86 ATC250R for $500. It has a marking on the cylinder and I would like to find out who made it. The bike was originally bought in Oregon and the 2nd owner moved it to California. Thanks second owner is who my buddy bought it from. He said he bought it in Portland in the 90's and he never touched the motor. Any help is appreciated, Loren

Title: Re: Help me identify this engine builder
Post by: croat1 on June 25, 2017, 02:48:18 AM

CW Racing Engines. Campbell, California

Joe

Title: Re: Help me identify this engine builder
Post by: The norm on June 25, 2017, 12:38:51 PM

CW Racing Engines. Campbell, California

Joe


I wonder if they left a way to know what porting the cylinder got? Kind of silly, it has stock exhaust and air box, but a ported cylinder

Title: Re: Help me identify this engine builder
Post by: croat1 on December 26, 2024, 04:43:47 PM

Old thread but CW rRacung is still in business.

Find them on FB or Instagram.  I don’t see a website.

Joe

Title: Re: Help me identify this engine builder
Post by: croat1 on August 27, 2025, 09:19:21 AM

Still in business

Title: Re: Help me identify this engine builder
Post by: The norm on August 27, 2025, 07:56:57 PM

A few years ago I had Pete look at the porting and he said it was pretty good. I know it pulled pretty hard and was a bit better after I bumped the compression up.