670HO pistons in 700 twin?

[autowrench]

Who has done this? What were the ups and downs? Did you have to hone it out for clearance? What about the squish when you were done? I really need to freshen my motor up and would like to go with dual ring pistons. Is the Wiseco 700 kit dual ring? Thanks in advance for help.
Tom

 

[extremsledder]

yea iam running spx molly coated 670ho piston in my 700 and it works great i also have a head kit and the companey that made the head recomended the 670 piston because they last longer with the dual rings so i would do it for sure but definilty do not put wisecos in your sled i have never had any luck with them

 

[autowrench]

Thanks! I was on cudney's site recently and didn't see anything for the 700. I could contact him directly and see if he still sells it. I see you also use a port timing spacer as well. How many miles/km's since you did the work?
Tom

 

[extremsledder]

i actilly bought the sled with the head instaled about 2 years ago and then decided to freshen the hole motor last year and i have had no problems i belive that cudney has stoped production on the haed kit with the port timing spacer now but i may be wrong but it works well with the set up iam running the sled go's to 8500 rpm and polls like you wouldnt belive

 

[ibdoon]

RKT has a head for the 700 and a few other goodies on their site claim 150 hp from their set up. You could try a set of SPI pistons and rings