need input 06 900 pistons

[towmaster]

hey men new here, great site wish i herd about it long time ago

looken for what pistons to put in my 06 switchback 900,i bought it with a factory reabuild n its in for the 3rd time geting motor work this is the 2nd for pistons n sleave,there using wiesco pistons, the sled has the following done to it:SLP air box,pipe n y pipe,can with the SLP icu flash, bottom end check ok, clutches done beond stock,, i was told that spi coated pistons would be the best for these big sled ??

its my first 900 n love it but i see i got lots to learn about tricken it out..

 

[heavy d]

welcome to the site.
From everything I've read and heard, the best piston to put in a 900 is the OEM piston. If you are going with wisco.......be darn sure that your engine is warmed up properly before you start out.......cold seizes are a beeotch

 

[Newfusion900]

I'm with heavy d, I've heard that the best pistons to use are the O.E.M 06 pistons

 

[dktraw]

do not use spi pistons! they are a copy to the faulty 05 pistons. best is oem 06 pistons, you can use wiseco, but as stated, make sure you properly warm and heat soak engine before riding.

 

[Newfusion900]

Wiseco pistons sound like a pain in the rear if you have to warm them up and then let the heat soak in and then go before every ride.

 

[heavy d]

Don't get me wrong guys, Wiseco makes great pistons, and I am sure that they would work flawlessly in the 9's. The thing is, because of the way they are manufactured, they heat up slower than an oem, and un-fortunately.....most people just don't get that.

I personally have used wiseco pistons for years in just about anything I've owned. I also undestand that the bike isn't moving until I feel heat in the rad, or the sled isn't moving until I see 130 on the guage.

I've seen many a parking lot hero start his sled, drive off the trailor, and slam the throttle right to the bar, only to hit the end of the lot in 3.1 sec with a seized motor. Then have to hear him across the lot saying what a poor piston wiesco is...........it ain't the piston, it's the brain dead #@$K driving it.

With the issues that the 900's have had with pistons (2005), I would stick with the proven fix. Although, I would not shy away from wiesco, if you are familiar with thier product


my $0.02

 

[94fordguy]

NOTHING beats an OEM 2006 Polaris 900 piston... It is simply the best piston available for the 900s for any situation.

Welcome to the site Be sure to read through the stickies at the top of the 900 section, the info collected there is invaluable for getting these things running to the potential they should have been from the factory.

 

[towmaster]

do not use spi pistons! they are a copy to the faulty 05 pistons. best is oem 06 pistons, you can use wiseco, but as stated, make sure you properly warm and heat soak engine before riding.

k spi is out then i dont tuch the throttle until the gauge reads at least 95 then its a low rpm for a couple miles then hammer time, im not stuck on any piston i just no the 9s are a little finiky wen u start playing n i think u guys are the most noligable bunch ive readup on yet

 

[Danbot]

I use 06 Polaris pistons, but I wanted to make a point on this subject about Wiseco's.
The crankshaft of our sled engines should be heat soaked well before we head out for a ride anyways, so fears of warming up the Wiseco pistons is really a moot point.
If someone is hitting the throttle hard before the Wiseco's are properly warmed up (consequently risking cold seizure) they are taking MUCH larger risks with the bottom end.

 

[towmaster]

Don't get me wrong guys, Wiseco makes great pistons, and I am sure that they would work flawlessly in the 9's. The thing is, because of the way they are manufactured, they heat up slower than an oem, and un-fortunately.....most people just don't get that.

I personally have used wiseco pistons for years in just about anything I've owned. I also undestand that the bike isn't moving until I feel heat in the rad, or the sled isn't moving until I see 130 on the guage.

I've seen many a parking lot hero start his sled, drive off the trailor, and slam the throttle right to the bar, only to hit the end of the lot in 3.1 sec with a seized motor. Then have to hear him across the lot saying what a poor piston wiesco is...........it ain't the piston, it's the brain dead #@$K driving it.

With the issues that the 900's have had with pistons (2005), I would stick with the proven fix. Although, I would not shy away from wiesco, if you are familiar with thier product


my $0.02

good info, nothen against wiseco personaly was just told from a older freind thats built a lot a motors in his time that wiesco is the best for smaller bikes n the older small sleds 747 for me to no that, the last ride of the season last year put on 250 or so miles in the duck MNTs the sled still pulled hard but didnt idle proper got er back to my shop puled the valves n the clutch side top ring was copletly vanished with cyldr damage to boot so for 1 cyldr down it did prity good,im getten the hint OEM polaris is far none the best no matter wat extras are done to the sled?

 

[towmaster]

I use 06 Polaris pistons, but I wanted to make a point on this subject about Wiseco's.
The crankshaft of our sled engines should be heat soaked well before we head out for a ride anyways, so fears of warming up the Wiseco pistons is really a moot point.
If someone is hitting the throttle hard before the Wiseco's are properly warmed up (consequently risking cold seizure) they are taking MUCH larger risks with the bottom end.

right on im learning more n more,some one said 130 on the warm up is that to stick to i was going 95 ?

 

[towmaster]

SLP Flash

i red somewhere that if u got the slp can n pipe he recomended not to get the flash, i flashed myn a while after the instalation on the pipe n it seamed like i lost a bit on mid n definatly lost some on top end, should i flash back to stock???

 

[Danbot]

right on im learning more n more,some one said 130 on the warm up is that to stick to i was going 95 ?

Here's my procedure:
As soon as we pull into the staging area, I start my sled on the trailer and let it run til I get 130 temp. Then I will unload the sled, shut it off, and let it sit for probably 15 mins while I get geared up. Then I start the sled up and let it warm up to 130 again. At this point I warm the belt and track up with a buddies help or on a track stand. Now I am ready to ride.

Some people are even more meticulous than me with their procedure, many others are less cautious. I am just sharing my methods.

 

[Danbot]

i red somewhere that if u got the slp can n pipe he recomended not to get the flash, i flashed myn a while after the instalation on the pipe n it seamed like i lost a bit on mid n definatly lost some on top end, should i flash back to stock???

As far as I know the 900's wont run right without the flash if you have a SLP pipe installed.

 

[towmaster]

As far as I know the 900's wont run right without the flash if you have a SLP pipe installed.

i put about 100 mile on after pipe installed n befor flash n she ran a bit harder than stock with a good sound, put in flash n it seemed like i lost out on some mid n cant get the same on top end eaven from all stock or without the flash n just pipe n can not sure y ..

 

[Z-Man]

i red somewhere that if u got the slp can n pipe he recomended not to get the flash, i flashed myn a while after the instalation on the pipe n it seamed like i lost a bit on mid n definatly lost some on top end, should i flash back to stock???

Go to SLP's own website there is a dynochart. The SLP pipe loses low end and midrange. Still do not know why anyone would want one. Use your stock pipe with a can and your sled will run better and last longer. Don't like the heat shields than take them off and ceramic coat your stock pipe.

 

[Z-Man]

All 975's use wiseco pistons and they work fine. MY warm up is just like mentioned above. Start sled right away and let it idle while getting dressed. put it on temp gauge and watch it. If it gets over 125 shut it off. If it does not get over 125 leave it running. Once you are geared up and ready to go take it easy for the first couple miles.

Almost forgot DO NOT PUT SPI pistons in a 900. Stock 06 pistons have proven to be the most reliable pistons available.

 

[towmaster]

Go to SLP's own website there is a dynochart. The SLP pipe loses low end and midrange. Still do not know why anyone would want one. Use your stock pipe with a can and your sled will run better and last longer. Don't like the heat shields than take them off and ceramic coat your stock pipe.

right on good to no, stock flash is going back in stock pipe is going back on n im ordering a mbrp can just because i like the sound, and ill bet 10 to 1 ill get my mid n top end back up to snuff too

got up this morning ground was white kids came home from school got the 02 340 indy going for them of course i had to take it for a worm up run cant wait to get my 9 back n test her out

 

[heavy d]

Very good point Danbot

I use 06 Polaris pistons, but I wanted to make a point on this subject about Wiseco's.
The crankshaft of our sled engines should be heat soaked well before we head out for a ride anyways, so fears of warming up the Wiseco pistons is really a moot point.
If someone is hitting the throttle hard before the Wiseco's are properly warmed up (consequently risking cold seizure) they are taking MUCH larger risks with the bottom end.

 

[sno_mo_racer]

I have an '06 so those are the pistons I have stuck with. Also let the 9 warm up to 120* then shut off and heat soak the crank while I dress up n snack for about 10 minutes then will know whole engine and crankshaft is warmed up properly and good to go. Used to have a indy 400 lock up on me when young n too eager learned my lesson after that. 16 and minimum wage job father made sure I learn my lesson by having to pay for own mistake and payed everything out of my own pocket and that sure learned me how to properly warm up sled. Was a long couple months without a sled while earning the parts.