I have been given a RWR Piston and Kit and wondered if I will see any noticable gain if i have this installed on its own ??? . Do i have to make any other changes / carb retuning etc if i do this Piston only. Is it worth the cost ????

cheers

 

Well i think RWR pistons are all higher compression? so yes you will feel it.

 

Oh any free gift is good!! what compression??12:1? heck yeah, end cap, TM45 some cams hang on hold on and have fun!!!

 

Hey a fellow KIWI... What over mods are on the bike? Do the valve springs at the same time. I have a bunch of RWR parts on mine, all are awesome [img]i/expressions/face-icon-small-smile.gif[/img] what part of NZ are you from?

 

First: what piston do you have.

Second:I would not remove my head with out porting the the head and the intake.if you do this then yes it will be worth the time having it down regardless of what piston you put in it[img]i/expressions/face-icon-small-happy.gif[/img]

Third:If you do not wish to port i would say no it is not worth tearing a perfectly good runnig bike down. there are other improvements that would make more of a differance with out all that work.Save the piston until you realy need it.

 

Hi Kiwi2 , im from Christchurch origionally then Auckland for past 13 yrs and three mths ago i transferred with my company to Sunshine Coast, Queensland Australia. Not a lot of quadriders here in Australia but its growing , I have bought one of my bikes with me , have done the usual mods, air filter, carb rejet etc, big gun cdi, exhaust, goes ok , just got given a RWR piston, 11:1 compression I think, so not sure if i should crack her open and put it in, would like to see some gains but dont have cams to swap out and nobody in Aust does cams for these things.

Just want some more go without going silly , hard to find local engine monkey who can do this stuff so has to be easy stuff.

Great to hear from another Kiwi.

cheers

 

Hi Prokiwi, Im from New Plymouth lived in San Diego for 16 years, Love it. Everyone here rides quads. Great sand dunes and dirt within 2-3 hours drive. My opinion on your piston, which is prob a 12:1 which cost from RWR $250. wouldnt waste your time or the cost to have some one install. I would do as AZ SAND said and save it for when you need it down the road, which will be never as these rotax engines run forever.....Unless you have the bucks and time then do the lot. Let us know what you end up doing. Cheers Kiwi2 [img]i/expressions/face-icon-small-happy.gif[/img]

 

a lot of ifs here but,
since it was free,
if you can do it yourself and confident in your work then install it,
because your bike is an '06 by your signature then I would guess its low hours,
and if its low hours like under 100 then chances are the factory cross hatch is still on the cylinder wall,
and if the factory crosshatch is still on the cylinder wall then no hone job needed for the new rings to break in,
and if no hone needed and no valve springs or porting is being done at the same time as the piston,
then no need to break the seal between head gasket and cylinder,
the cylinder can be removed with head and gasket intact and then piston replacement is free with nothing needed to buy excpet maybe a base gasket for $6 if it tears.

but if its over a hundred hours, or you have to pay for labor, and you need a hone job, then no it aint owrth it for piston alone IMO, so save for cams and portwork and carb.

 

Great perspective from Hightower...

If you do decide to install the piston remember the obvious and bump your fuel octane up, and make certain the endgap on the rings is filed to specification otherwise you'll have a 4-smoker because they will never seat! [img]i/expressions/face-icon-small-blush.gif[/img]
Also, make sure you get the right piston pin and (fresh) circlips for your install.

...pretty sure that all was solid advice...

 

If you had a really good break-in with your stock setup and your blow-by is very low as it is, you stand the chance of not gaining much if any if you don't re-hone the cylinder and file fit the rings. The crosshatch is rounded off and virtually ineffective after about the first 20 to 30 minutes of run time. After that window is gone, you need a new crosshatch, IMHO............or your rings will not make an excellent seal when they seat.

I would not do it until you are pulling the head for some other reason.......then do it right. Fortunately, a piston has a pretty good shelf-life [img]i/expressions/face-icon-small-wink.gif[/img] lol