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testarossa wrote:

larrycavan wrote:

As for valve seat issues with that setup....ain't going to happen I don't think most people really know just how freaking hard those KZ seats get after 30 years :laugh: Cut them sometime...you'll see what I'm talking about.

I go through carbide blades all the time installing over size valves. In fact I just ordered some more today.....

Heat treated and hammer forged at 9,000 rpm.

Beating on little brothers head does same thing

Anyone got a pry bar so Plummen can get his feet out of mouth :laugh: :laugh: :laugh:

I'm gettin new valve springs now for sure!

they dont make a bar that big,ill stick to my story! :laugh:
so which part dont you agree with dr demento?install some heavy clutch springs on your bike and let us know how your left hand feels after 2 weeks of daily riding! :woohoo:

I'm glad this topic came up. I sort of wondered the same thing since I stuck a set of the APE springs in my '74 that I'm working on. It has 1015 10.5 to 1 pistons but stock cams. Head is an old Flo-Max Finks Racing head. I put the springs on with the intention of maybe adding .385 or .395 cams later on. Not interested in anything radical. But I wondered how much more stress it would add to the cam chain, valve seats, etc. Sounds like maybe no big deal. I don't have the bike on the road yet.

id say your situation is a little differant being that its allready hotrodded other than needing a set of warmer cams to finish it off,versus a basically internally stock motor.
id reccomend the heavier springs in your case because of the way the motor is built

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