Which Piston Set RMK 700?

[Drewd]

-I'm replacing a crank on my wife's sled that has 1000 easy miles on it. Clutch puller broke inside crank and could't drill it out.

Anyway, piston rings look good and engine compression was like new before I pulled the engine.

Here are some options I am considering:

a. Don't replace rings or pistons and just install the replacement crank and new seals.

b. Put new OEM rings on the used pistons and do a very light hone on the cylinders.

c. Put aftermarket rings and pistons on the engine.

If I go with option C, should I use SPI or Wiesco? I want this sled to last for a while.

 

[o2bncamo]

At only 1000 mi I would put the piston and rings back in. That engine is easy on pistons.
Make sure you get the pistons back into the same cylinder.
If you go with option C. I use a Wiseco before a SPI.
Sorry to here about the crank.

 

[Drewd]

Bummer, I went with SPI pistons/rings due to $$. I only need this sled to last another season for the wife and then she'll get my Pro 800 and I'll get a newer one. She doesn't ride hard so I'm thinking SPIs should be ok. I thought about Wiescos but heard that cylinder bore spacing required things to be a little looser due to expansion.
a pis

I was going to reuse the pistons but I'm not a fan of single ring pistons. With the high compression PAR head, I felt a piston with 2 rings would keep combustion pressure where it needed to be pushing against the piston and not leaking past it.



I didn't like all of the blowby on the stock pistons and there was some minor scuffing on the bottom of the pistons that I didn't notice last night. Cylinders look ok and I'm only going to scotchbrite them.

I found the PAR head cheap on Ebay and bought it with the savings on the Pistons/Rings.

Does anybody know if I can use new OEM rings on the SPI pistons? Main thing I heard about SPIs were rings didn't last as long.