M1000 Rebuild
- Thread starter 09snopro
- Start date
your going to want a forged piston everyday of the week, oem is cast and your pushing your lock with boost. i would recomend wiseco pistons, there spendy but worth it 10 times out of 9. Find a dealler for western power sports and go there. if your in the portland oregon area/ vancouver washington area let me know and i can hook you up with a good dealer.
B
Boyko
Well-known member
Welcome to the forum.
I would use the oem pistons, Suzuki builds a solid two stroke and uses cast pistons for a reason and it is not because it is cheaper. I have had bad luck with wisco in the past, a lot of there piston kits do not even have the clearance specs with them. I built my fist 2-stroke turbo kit 13 years ago and understand how boost works. If you counting on detonating the motor or running a big hit of nitrous forged pistons would be a choice. Whenever I can I use cast pistons in 2-smokers, I know not ever one will agree but I have never had a piston failure keep in mind I do not run big boost numbers on 2-strokes ether, that would be just making more work for myself.
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Just yesterday blew up both my TM1000 stock pistons.
Not melted just cracked into pieces.
No signs of detonation.
Not melted just cracked into pieces.
No signs of detonation.
A
Arctic Thunder
Well-known member
I prefer the stock pistons. No issues with any of the local M1000's running boost.
Thunder
Eemile-no signs of detonation, but bet it was. How many LBS of boost and what fuel? Curious
Thunder
Eemile-no signs of detonation, but bet it was. How many LBS of boost and what fuel? Curious
Just yesterday blew up both my TM1000 stock pistons.
Not melted just cracked into pieces.
No signs of detonation.
See the missing pieces between rings.......these are signs of detonation.
I agree, you would have taken out forged as well, maybe not cracked, but would have been melted above the top ring. I like wiescos but the stock pistons have proven themselves over and over in turbo apps.
Forged = less silicon, more resistant to stress, but easier to melt
Cast = more silicon, harder to melt, but can crack
Stock or stock replacements
Have run stock cat, wiseco and SPI pistons. The cast ones in a properly setup, properly fueled sled will last as long as you want them to. Forged are good for one season and throw them in the garbage. Quit running my 1200 because Wiseco forged is only choice and had to be changed every year due to ring land wear. On the exhaust side you could fit almost 2 rings in the gaps after less than a 1000 miles. No failure. I got 4 yrs on my other 1000 sled running similar turbo setup and when changed pistons (stock) they looked like new. Have also used SPI pistons in turbos and seem as good as the OEM. The pics above of the cracked stock pistons are strictly deto. Poorly setup or wrong fuel/boost levels. I know this very well from my early M1 turbo days. Did that to at least 3 pistons before I got it right. BTW this is on sleds run every day for normal riding, not racing at 8-14 lbs boost. Pulling some chutes, trees, lots of WOT and all at 5-9000 feet.
Have run stock cat, wiseco and SPI pistons. The cast ones in a properly setup, properly fueled sled will last as long as you want them to. Forged are good for one season and throw them in the garbage. Quit running my 1200 because Wiseco forged is only choice and had to be changed every year due to ring land wear. On the exhaust side you could fit almost 2 rings in the gaps after less than a 1000 miles. No failure. I got 4 yrs on my other 1000 sled running similar turbo setup and when changed pistons (stock) they looked like new. Have also used SPI pistons in turbos and seem as good as the OEM. The pics above of the cracked stock pistons are strictly deto. Poorly setup or wrong fuel/boost levels. I know this very well from my early M1 turbo days. Did that to at least 3 pistons before I got it right. BTW this is on sleds run every day for normal riding, not racing at 8-14 lbs boost. Pulling some chutes, trees, lots of WOT and all at 5-9000 feet.
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I have had good luck with the stock pistons, Ill put a top end kit on yearly. I put on a bunch of miles and at $300 it quite cheep insurance espechally when you get all the gaskets with it. Never mind burning a piston how many motors have gone just with a leaky gasket, If youre one of those guys that dets out all the time get a timing key a littel more cheep insurance.
That my pic is result of 13PSI at sealevel. 
CF1000, 10.5:1 head, 2.07mm(0.0815") squish, -2 timing, 50/50 93oct pumpgas+VP Q16(MON 116)
CF1000, 10.5:1 head, 2.07mm(0.0815") squish, -2 timing, 50/50 93oct pumpgas+VP Q16(MON 116)
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OEM Cast pistons have been great for me in the TM1. I pulled the original set of stock AC pistons last fall after 3 seasons of use and they were in excellent shape. I bought my rebuild kit from Ken's Sports in WI. Sometimes they run specials on their website or eBay.
what size turbo? intercooled?
Something weird hapened to my CF1000. 
Same 1000cc engine as above with new Wössner forged pistons.
Lowered compression a bit more. Stock ignition timing.
16psi at sealevel. No signs of deto.
Same 1000cc engine as above with new Wössner forged pistons.
Lowered compression a bit more. Stock ignition timing.
16psi at sealevel. No signs of deto.
