[norlando]

I'm looking into getting into racing my 1982 Yamaha SS 440 in some vintage sled drags this winter. I put in a new motor in it a couple winters ago, also put a new comet clutch in it last winter. Do any of you guys have any ideas on how to get any more hp out of it?

 

[OldCatRider]

Is the comet setup at OEM? Change the spring or weights for a higher engagement rpm.

 

[norlando]

Originally posted by OldCatRider
[br]Is the comet setup at OEM? Change the spring or weights for a higher engagement rpm.

i am not sure if the setup is at OEM? This clutch is engaging too early and is causing the sled to bog off the start, should I change to a stiffer spring or use lighter weights?

 

[norlando]

just picked up some Boyeson Power Reeds for the SS 440... anyone ever use these on older sleds?

 

[92XCR440]

throw a stiffer spring in the primary. you want that to eng at about 4500-5000 rpms.

 

[ultrastud]

My best friends dad had a 440 exciter, and would that little bitch really scream!!! []