POLARIS INDY 650 TRIPLE ENGINE BUILD #3 pistons & cylinders

[@toddclyne3493]

My email for ordrering trash cans and if you would like to help out on the builds. Thanks Polaris.trashcan&gmail.com

[@BryanGreenup]

Todd, I learned so much from this series. I am in the process of restoring a 1980 txl 340. I find your videos inspiring as I struggle through the restoration process. I’m not sure if I will rebuild the motor yet but will definitely rewatch this series if I do. Thanks again for taking the time to do these videos.

[@toddclyne3493]

Thanks for watching and commenting. It keeps me going 😁

[@tca375]

Thank you Todd.

[@toddclyne3493]

You bet

[@ericsundquist6696]

For torquing my fly wheels being I have 1000s of rewind cups I just use a small bar to hold. I have used rope also. Either or works. I just prefer the bar through the cup.

[@toddclyne3493]

Great idea. And yes you have plenty of starter cups to go around 🤣🤣

[@just_in_time5518]

Again Todd great engine build series! 😊

[@toddclyne3493]

Thanks man

[@robertangell7926]

Nice work and determination! Bought a piston stop for a 2stoke dirt bike . Synthetic tip slug screws into sparkplug threads on ur polaris.

[@toddclyne3493]

Great idea

[@lyleschmidt3078]

I use a piston stop too. Won't compress like rope.

[@shawnbuckendahl1968]

Lots of folks think with a "best" mentality and don't think in the "pros and cons" mentality. They ask what is the "best" piston without considering usage. Cast and forged pistons have different features with different pros and cons. Glad you discussed this with the Wiscos. Since I rent out my sleds, I just run SPI so I don't have to worry about people warming them up like Wiscos prefer.

[@toddclyne3493]

Warm up is definitely key

[@shanegridley4922]

Hope you didn't forget the wrestling bearing!!😮

[@shanegridley4922]

Wristpin

[@TCM_Productions]

Wiseco always run 'em loose, especially on trail sleds and absolutely lots of warm up time, they're just not forgiving and why we never used them in customer sleds. For our mini-sprint dirt track engines and ice or asphalt drag sleds, actually just ran Kimpex cast pistons, they were cheap, consistent and held up as good as anything- but that was 30 years ago, so who knows about import quality anymore. Glad you noted ring pins to intake side, because I've seen mis-stamped arrows many times and never trusted them, keep pins to intake side and you'll always have it correct. Another reason I liked the aftermarket pistons, they used the e-clip style for the piston pins, way better than standard c-clips.

[@toddclyne3493]

Lots of great info you shared. Thanks

[@davidanderson1763]

A former friend of mine bought a 92 RXL. We got it to run but it wasn't good. Tore the engine down. 4 out of the 6 rings were installed wrong. They were oem pistons and keystone type rings.

[@toddclyne3493]

Oh man that sucks

[@larrywarner9314]

Todd I ported the Indy 600 cylinders and used them on the centurion 500 for a big bore set up and with the right carbs and jetting, hang on wheelie machine

[@toddclyne3493]

Oh man I bet!!!

[@haydenrichardp3712]

My understanding is the difference between a cast vs forged pistons is the forged will expand more than a cast since the forged actually contains more material in it. I always run more piston to cylinder clearance with forged pistons. All engines need some type of warm up before running them hard.

[@toddclyne3493]

Great points. Thanks for sharing

[@larrywarner9314]

I use pro x pistons Mainly if there available

[@toddclyne3493]

Great product

[@spaceboy7192]

I built a flywheel holder out of a old starter cup. Just weld a piece of angle iron on the face and smashed the other end for a comfort grip handle.

[@toddclyne3493]

Great idea

[@2strokejunky402]

just thought i put this out there if you are trying to convert a rxl engine to carb and cant find carb boots from a 91-92 650 minkuni vm38x200 carb boots will work if you drill out the bolt hole from 8mm-10mm and they are easy to find plus pretty cheap i wasnt able to find polaris carb boots that would work for the life of me so i wentb through as many boots as possible till i found these and ordered them up and worked mint with minor modification

[@toddclyne3493]

Thanks so much for sharing this information!!!

[@blakeernst585]

A dial bore indicator is an awesome investment fore piston clearance especially with forged pistons because it can show deviations from the top to the bottom of the cylinder. I had a skidoo that had 0.006 at the top and 0.002 at the bottom

[@toddclyne3493]

Oh I definitely agree it's a great tool to have. But I was trying to use what most people have on hand for tools.

[@blakeernst585]

@@toddclyne3493 completely understandable. The motor is was working on blew up 3 times in 1200 miles and nobody could figure out why until i bought it and ran a dial bore through. It was a poorly manufactured cylinder on skidoo’s part. Love the content though. Will you be at the Midwest ride in?

[@toddclyne3493]

@@blakeernst585 probably not. It's just down the road from me. I would rather stay home and finish up the two rxls so we can take um up north the following weekend and get some lake miles on them. Some snow up north. Some 😁

[@haydenrichardp3712]

Use larger diameter rope in the cylinder to torque the flywheel.

[@toddclyne3493]

Great idea

[@kirkc5823]

Can't wait to hear them fired up!

[@toddclyne3493]

Soon

[@matthewbegin3462]

Great serious, makes me regreat selling my 88 indy650 sks for 500 bucks 20 some years ago..

[@toddclyne3493]

Oh no

[@ronaldrecord3011]

Did you put the wrist pin clip in off camera on that last cylinder

[@toddclyne3493]

Yes I did 😂

[@brianwilber4347]

Can't wait to see them both finished!!

[@toddclyne3493]

We can't either 😁

[@shanegridley4922]

Love the great info--on all your builds!!😊

[@toddclyne3493]

Thanks

[@jameskirk5906]

Triple clyd, trip carbs, trip pipes. Todd is the man!! MAGA 2024!!!

[@toddclyne3493]

😁😁 love it. Thanks

[@larrywarner9314]

Polaris pistons are cast , and wiesco are made of a billet or other material, cast pistons grow in a different rate than Wiesco cus of different materials , Todd is absolutely right about letting your sled warm up before giving it the beens

[@toddclyne3493]

Great explanation of the different piston make ups.

[@jeremymullen5378]

🔥great stuff.. really enjoying this engine build videos. Chassis are looking good Trent. Nice work buddy 🔥👊🔥🔨🏍⚙️⚠️

[@toddclyne3493]

It's been a long couple days 😂

[@dubiousf00d]

Your not wrong about the gaskets. They shouldnt need any modification to work as intended. On a side note, I could take bastard off your hands if that would help ya😂😂🍻

[@toddclyne3493]

😁😁🍻🍻

[@troymodin1682]

Another very interesting and informative video. Great job, and thank you. These are really interesting. Keep up the great work buddy 👍

[@toddclyne3493]

Thanks man

[@jerrylewis2639]

Are you using new oil pumps on rebuilt engines or can you rebuild the oil pump? Couldnt find any new ones when i was looking.

[@toddclyne3493]

Used pumps

[@gregmcnamara9229]

"A guy should not have to cut the edge of his head gasket off so they dont overlap."😂😂 You had me cracking up. Awesome series once again. Im still trying to talk you into a 1200 mod. 😁

[@toddclyne3493]

I would love to do one but man my wallet is not ready for one 🤣🤣

[@paulmazzola398]

A lot of people don't know that forged pistons expand different from cast pistons. The 01 cylinder was the best HP making piston port engine. A tip for installing for wrist pins is put them in the freezer and warm the piston up in the oven on a very low temp. I found it makes a bit easier.

[@toddclyne3493]

They make great power

[@jasonarnhold1841]

Wouldn’t a dab of grease hold the alignment piece in the hole? I use the same trick when in doing water pumps on outboard motors to keep the pin in place

[@toddclyne3493]

It certainly would have.

[@abandanation1000]

good video keep them coming. not sure what year it was in the 650 but the bore and stroke were really good and it made alot of power that one year

[@toddclyne3493]

Good tolerances that year then

[@darcy32171]

I have that same fuel filter on a 1970 AC Panther 399 Kohler. Issue is sucking flat the primer bulb. I am running that filter the opposite way. Now I`m wondering if mine is backwards...Hmm

[@darcy32171]

My filter is a Wix 33011. It is installed correctly. Is the filter on Trenton`s the correct way? Hard to tell in the video.

[@otahu26]

100% people aren't checking the clearance on the piston to cyl wall clearance. They will check the ring gap and neglect the piston. SPI pistons are close to OEM for clearance's.

[@toddclyne3493]

Yes I agree they are very close

[@proxr440mod]

im sure you're aware but with any wiseco piston, from my experience, always make surre the Ring index pins are tight if they are loosely fitting, some red loctite works perfect

[@toddclyne3493]

Good advice

[@bing4332]

Think you missed a circlip. Usually there a pain to put in. There no way you put it in with your thumb. Lol

[@toddclyne3493]

Yeah my bad that was done off camera

[@jasonarnhold1841]

No bearing retainer clips for the pistons???

[@toddclyne3493]

The second clip didn't make the video. If you read the other comments about the missing clip you would have seen my answer 😁. I forgot to turn the camera back on before I put it in. I certainly wasn't taking it back out 😁.

[@350spyder]

ok you have convinced me that i need a 650 in one of my sleds....haha

[@toddclyne3493]

😂😂

[@vincentnowakowski509]

I should 650 swap my 04 rmk

[@toddclyne3493]

😂😂 do it

[@alfredpoitras6017]

on your water pump there a line in on the carb side mine dont have that would that be an older styel pump or ?? and i have a pump like yours dose wich would be better ??

[@toddclyne3493]

The older pumps have the extra line

[@alfredpoitras6017]

@@toddclyne3493 ok wich would you use the older or newer

[@toddclyne3493]

@@alfredpoitras6017 depends on the coolant bottle hookup requirements

[@Z-Bart]

You leaving the stock skis or going plastic? Good work on the engine Todd.

[@toddclyne3493]

Leaving the steels on it. Trying to keep it as original as possible with just a couple upgrades

[@charleswillis7850]

I didn't t see you put the second snap ring in on the last cylinder

[@toddclyne3493]

It got put in. My video editing is not always as good as my engine building skills 😂

[@Kq750.]

Can the rope get cut?? Have pieces inside cylinder

[@toddclyne3493]

Yes if you have the piston down to far it will come out of the exhaust port. Ask me how I know this 😂😂

[@joshkoltes]

Giggled when you were trying to open that pin with freshly grease fingers

[@toddclyne3493]

😂😂 yep some times I don't plan very well

[@jerryglascock1194]

Why wouldn't you just use a piston stop?

[@toddclyne3493]

Because most people don't have one. I was trying to do this with what most people would have on hand for tools.

[@Fishing38Irkutsk]

👍👍👍👍

[@toddclyne3493]

Thanks