81cr450:
Thats a pretty good burn pattern. Just a couple thoughts I've had on doing this. Paul F you in the A Class, had a divided intake boot to help keep & improve a sweet burn pattern like that. So all the charge doesnt end up on the right side of the motor. Where can I get that, someone said watercraft?Huh??
Also Dave have you considered reducing crankcase volume, use the cr5 piston & rod shave from top & bottom to shorten the barrel & valves a couple mm. The valves you could just cut out of the stem between drum & gear as long as you had a jig.
2 more while I'm at it, the volume in the transfers,ex side, I can see you removed the divider, the drum becomes a restriction at some point so the drums should be cut to increase the volume in the exhaust port. You also showed a k5 cylinder with a flange welded on the outside of the jug so the pipe junction is larger, when you finally look at the cpi pipe youll see the volume theyre trying to deliver at that point. For that matter ask Roost about porting the CR5 clear out into the flange. I know youre thinking intake side , cooling etc... dont forget theres alot of room in the xhaust too
Finally I weigh 165 & live in Utah, am lighter than you, please I'd help with about anything you could ask. I'd even polish your rod grin
Motorrad:
So a pair of old German FAGs knocked on my door today.
And you thought I was telling a joke.
- KX500 JEFF WARD ROUND 3 REBUILD 1062.png (204.28 KiB) Viewed 6154 times
If bikes are for kids I'll never grow up.