I know SPI pistons have worked well for alot of people, but what about their fix kit? You can get the whole kit for only $350 which is a much better price than the MTNTK kit.
SPI fix kit
- Thread starter AkRider217
- Start date
I've used a couple of the spi fix kits and haven't had a problem. As far as I know the sleds I put the kits in ate still running strong. One kit came with an aluminum spacer and the other came with a steel spacer they where ordered from 2 different companies. On a Polaris motor I would go with a spi kit vs a kit that uses a wisceo piston.
ditto on the SPI pistons! I have had problems with Wiesco pistons in the fix kit! In my last three top ends, I used just the SPI stock pistons and on one of those I took out the fix kit plate and went back to stock SPI pistons and those are still running great. If I can't convince the owner to use OEM polaris pistons, then I recommend SPI. I used Sno-X pistons for many years and the last time I ordered and received pistons from Sno-X, I got SPI, so I just cut the middleman.
gtwitch in wyoming
gtwitch in wyoming
Do you guys think the SPI fix kit is worth it over just standard SPI pistons? The fix kit runs about $100 more than just the pistons, that's a lot of money for just a shim.
you could try HPP5074 at Cvtech...most of their hpp line of pistons are snow-x.....
I bought my sled with a MTEK kit in it, I just sent my cylinders in for a replate and hone...lol. Wiesco is a good product but i will hard pressed to ever run them on a trail sled ever again. Ive just switched to a SPI hyperdrive stock setup.
I have installed a lot of stock pistons. They are ok except the skirts collapse. This is a verifiable dimension which can be measured. I have never been a real fan of the spacer plates however if it has worked for you it cant be all bad. I have been using the RK TEK Wiseco pistons and have not had any issues/failures at all. Simple solution.
If you do go with the spi fix kit some kits come with a paper base gasket. Do not use the paper gasket. I've had 3 motors come in with leaking paper base gaskets. Use the oem style coated gasket. Also for the extra $100.00 your getting a spacer, longer locating dowels, new longer cylinder bolts and hopefully a good base gasket.
Here is the link to all of the SPI pistons. We also have gasket sets. If you don't see them please contact me. https://www.gobigparts.com/Snowmobile-Products/Engine/FIX-IT-KITS-PISTONS/
Still have direct replacement pistons and fix-it kits availale to keep your proride running in top form.
Take it in to Indy specialty and have them fix it the right way the only way !
IndyDan is the man and does it right. Not everyone wants to drop that kind of coin. If you keep fresh pistons in them they you can take care of 90% of the problems. I ran my proride 5000 miles. Did top end twice and was never stranded.
I just bought a sled with one of Dan's long rod motors and '15 OE pistons, and from all my research, that's the best engine setup for a Pro. Trouble is, that's $3695. Worth it if you've got a sled you've put some money into already and love, but hard to justify for the average Pro. If the crank runout is good and the cylinders aren't junk, the fix kit may be just the ticket to buy another season or two.
