SXR SXR rebuld ??'s

[Kawi 800]

I have a 2006 SXR and some back ground on it:
ADA head with 28cc domes
Dry pipe
fresh rings spring 08'
10/18 large hub prop (getting it re-pitched)

Stock summer 06', moded summer 2007 with wet pipe. Dry pipe, ada head and fresh rings added summer 2009. No other mods since then, same pistons and crank and rings.

I was thinking of boreing it out 1mm to make it a true 800CC motor so new pistons, new rings and rod bearings. Now my question is should I get my crank rebuilt, its 5 years old and has been ridden fairy hard every summer but always maintained. I’m also looking at adding a new light weight flywheel. Should I have my crank rebuilt, look at getting a new one or leave it as is provided it’s not lose or out of spec.

 

[Don 79 TA]

never hurts to have it redone while you are there, think of it as an insurance policy so to speak

i went with a Hot Rods crank, had it true/welded and hybrid bearings installed
wasn't that much $$ either, crank works did it
personally i would overbore as needed, if not needed, clean up what you have and save a bore... you never know...

 

[Kawi 800]

I sent an email to them, is it possible to just have my crank re-built and true and welded?

 

[509freerider]

Yes you can just have your stock crank rebuilt. The guy I use charges about $400 and thats with better bearings than stock. If you have 5 years on that motor I would definatly have it done while your in there. To me its cheap insurance!

 

[Kawi 800]

Yea agree, i dont know if i wanna rebuild the stocker or spend 100 buck more to have a brand new one put in.Crankworks quoted me ponly a little less then just buying a new one.

 

[djkorn1]

that crank is a timebomb at this point. Get it done while your in there...it could take out your cyllinder, cases, pistons...everything.

 

[Kawi 800]

Dont want that ha, a new crank will be ordered soon, a bore of 1mm i think and maybe some more weight reduction and look for a better pole.

 

[Bigfish]

Get the cyl ported ,it's worth the money .Give Art a call he can do all the work and it will rip and still be reliable.

 

[djkorn1]

Did it make a huge difference?? I may get mine done on the next rebuild.

 

[Kawi 800]

I did some port work on my ski in the beinging of last summer and it made a huge difference, in fact i need to get my 10/18 prop re-pitched becasue i am spinning it out off the start.

 

[Bigfish]

Did it make a huge difference?? I may get mine done on the next rebuild.

Korn it is night and day Art has a great setup for our type of riding give him a call.

 

[Zerfman34]

this has got me thinking. I've been all stock since I purchased in '07, ridden medium-hard summer 07, 08, 09. Not at all in 2010. I'm probly doing the group k sleeper kit (milling, porting, boring/jetting carbs + boring exit nozzle & lighten flywheel) and getting a hooker 9/15 in the next few weeks. I don't know maybe I don't really need to rebuild the crank yet that's what I'm thinking.