Does anyone have the specs. from Penton Imports to modify a 100cc Berkshire? I had a '74 that I modified ( ported by Cobb Engineering,modified expansion chamber,milled head/squish angle and rejetted).I wish to do the same to the Berkshire I'm restoring.I've searched all my old "Keeping Track's",tore apart all my attic boxes and found nothing.I'm hoping someone can help,as I wish to build the rocketship that I once had.(these mod's let me kick ass against '74 RM's and YZ's and they were 125's) Thanks.
I have them, Send your address to
[email protected] and I'll get you a copy!