SXR flywheel

[kawi_mods]

i got the kommander head.....i plan to buy a tbm flywheel

How do you like the head? big difference in power?

 

[mydixiewrecked]

It doesn't matter what head you get. Kommander, Thrust, ADA, milled stock head. All will give you the SAME power increase as long as the compressions are the same.

I would do flywheel and a 50 dollar milled head.

 

[djkorn1]

Get your stock flywheel lightened and get a head.

Get your head cut and an aluminum flywheel....more brap.

 

[kawi_mods]

how much do i shave the head?

 

[SpaceCowboy]

is anyone concerned about not having a girdled head? I have talked with a few motor builders and they have all suggested that over a milled stock head

 

[mydixiewrecked]

No doubt a girdled is better for reliability. But is it 200 dollars better? Not sure if you'd need a girdled head unless on a big power engine

Just my thoughts

 

[SpaceCowboy]

whats big power? when you start bolting on carbs, pipe, and get some porting done? Just seeing what everyone is thinking

 

[Octane_114]

85mm wiseco pistons, billet -2mm stroker crank, cylinder and case porting, t-5 ignition, blackjack 46's, aluminum flywheel, factory pipe c-4 chamber!

 

[kawi_mods]

how much is everyone shaving off the stock head? i did some rough measurements and i was thinking like .02-.03" off the head? but if someones done it i'd like the feed back on the compression of before and after and how much was shaved
Thanks

 

[kawi_mods]

anyone have a picture of a lightened SXR stock flywheel? thanks

 

[gaby7mm]

someone told me lightned flywheel not good to race

 

[sxrchris]

anyone have a picture of a lightened SXR stock flywheel? thanks

Some before and after pics. Just had mine lightened by zero! Did a great job!! I can notice a little more torque and revs quicker!

 

[kawi_mods]

Nice! those look clean! now does he balance them too or is that not an issue on these little flywheels?

Also is this machined off as well? v

 

[garrcass]

someone told me lightned flywheel not good to race

Whoever said that's a moron

Nice! those look clean! now does he balance them too or is that not an issue on these little flywheels?

Also is this machined off as well? v
View attachment 212713

No that's a pickup point for the ignition..

 

[djkorn1]

someone told me lightned flywheel not good to race

I think it is illegal except in Superstock.

 

[gaby7mm]

they told me lightened flywheel make you loss top speed in the chop

 

[djkorn1]

they told me lightened flywheel make you loss top speed in the chop

This sounds very likely. I am guessing that with less inertia, the chop probably kicks down the rpms easier when you land from small jumps.

 

[sxrchris]

^What garrcass said

 

[garrcass]

they told me lightened flywheel make you loss top speed in the chop

Probably a little bit but everytime you get water back to the pump in chop all that stress goes back onto your crank. Because that big heavy flywheel has all that energy going one way and the imppeler wants to slow down from hitting the water again. and what's between the drive shaft and flywheel the crank...
You can accelerate through chop with a big hub swirl and stuffer and a light flywheel no need to trash a crank.

 

[camojoe]

................and no need to buy a $500 lightweight tbm flywheel....

send your oem to #zero and save $400 dollars. I have owned "insert name here' lightweight flywheels and I know that it varies from whoever you talk to but for some reason the 2 tbm flywheels I have owned, superjet and sxr flywheels, did not last more than 2 seasons. The jetinetics lasted 1.......And yes they were installed properly but thanks for asking. So I went back to oem on the sxr and lightened on my 850 big bore. I will be getting my sxr lightened here soon from #zero since his work is great and well worth the price of admission