Jim Schmidt rods and pistons

seattle##gs · Aug 27, 2015

Today it was 84 degrees and I took the Norton out to run errands trying to take the quick way around Seattle. I have the JS rods and piston combo along with the BSA lifters and the JS1 cam. All performed VERY WELL even in the heat and some slow traffic I got caught in. The motor idled consistently and very smoothly at about 900 RPM where as a completely stock motor would be trouble in the heat. It never fails to start , often times in just 1/2 a kick. Very impressive. And it is the most free-revving motor I have ever worked with. It was a pleasure to ride even more than a stock motor. The cam is much more streetable than I would have thought, though I do prefer the stock cam with its gobs of low end. If I could afford it I would change my 2 other Nortons over to the rods and pistons. The only downside that I can find is the loss of the deep rumble from the pipes. The current sound is much different.

Fast Eddie · Aug 28, 2015

seattle##gs said:
Today it was 84 degrees and I took the Norton out to run errands trying to take the quick way around Seattle. I have the JS rods and piston combo along with the BSA lifters and the JS1 cam. All performed VERY WELL even in the heat and some slow traffic I got caught in. The motor idled consistently and very smoothly at about 900 RPM where as a completely stock motor would be trouble in the heat. It never fails to start , often times in just 1/2 a kick. Very impressive. And it is the most free-revving motor I have ever worked with. It was a pleasure to ride even more than a stock motor. The cam is much more streetable than I would have thought, though I do prefer the stock cam with its gobs of low end. If I could afford it I would change my 2 other Nortons over to the rods and pistons. The only downside that I can find is the loss of the deep rumble from the pipes. The current sound is much different.

Sounds great! What CR are you running?

74ok · Aug 28, 2015

seattle##gs said:
Today it was 84 degrees and I took the Norton out to run errands trying to take the quick way around Seattle. I have the JS rods and piston combo along with the BSA lifters and the JS1 cam. All performed VERY WELL even in the heat and some slow traffic I got caught in. The motor idled consistently and very smoothly at about 900 RPM where as a completely stock motor would be trouble in the heat.

trouble?

seattle##gs · Aug 28, 2015

No trouble...that's the point. I believe the compression is 10:1 or that neighborhood.

jug · Aug 28, 2015

Yeah, I'm using the same setup only with his 0 cam. Going to get a Fullauto head from Ken in a few weeks, after I have saved enough pennies. He's only got 1, 750 head left here in OZ so if I miss that one I'll have to wait for more stock in October.

Great to hear your happy with the set up.
BTW Did you do the balancing mod on the pistons. As per Jims web site?
jug

seattle##gs · Aug 29, 2015

Do not know about the balancing mod...what is it?

jug · Aug 29, 2015

seattle##gs said:
Do not know about the balancing mod...what is it?

Have a look on Jims web site, he lays out the instructions for balancing the pistons.
Better still
http://www.jsmotorsport.com/technical_pist_balance.asp
JUG

Jim Schmidt rods and pistons

seattle##gs

Fast Eddie

74ok

seattle##gs

jug

seattle##gs

jug

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