drive train upgrades need for a stroker motor

[nabusa]

I am building a stroker motor and I have heard the turbo guys upgrading their output shafts when they go above a certain power level. My question is, what needs to be upgraded when you go 1441 or more? Clutch, clutch basket, output shaft, etc? Any info on this would be great.

 

[dadofthree]

I haven't heard of anyone doing any work on the drive train because of a 1441 build.

 

[nabusa]

Well I might go bigger then a 1441, so just getting as much info as I can.

 

[dadofthree]

Well the stage 1 guys ( 230-250 RWHP ) typically put 3 heavy springs in the clutch. If you're building a 1720 Stroker add three heavy springs.

 

[BATTMAN]

get stronger valve springs. i would use all 6 heavy springs in the clutch if its a track bike.

 

[dadofthree]

Make sure you look into heavy duty sprocket cover. some have failed bc of adding heavier springs.

 

[dadofthree]

https://www.hayabusa.org/forum/engi...77-article-hayabusa-clutch-how-they-work.html

 

[dadofthree]

https://www.hayabusa.org/forum/engi...u-wanted-know-about-multi-stage-clutches.html

 

[Hit Man]

Undercut the tranny and install billett shift shafts or you will have to split the cases again.

 

[GIXERHP]

As for aspirated motors you are good up to 300 hp for the rods and such, as for the transmission, i would have any gearbox undercut no matter what, to start with!

 

[nabusa]

Even on the Gen2 trans you have to undercut the gears?

 

[dadofthree]

Gen IIs come ready

 

[nabusa]

Sweet so just the output shaft and clutch is all I have to do?

 

[dadofthree]

It's up to you cuz it's your ride.

 

[glenn71]

A gen1 gearbox is undercut on all gears except 1st and 2nd gear from the factory.I think suzuki just got it wrong on 2nd gear.