They are cheaper to buy for a reason in my opinion

She’s a 10 second 6 speed supra. I have some older vids you can check out if you are into those cars

I like taking the path of least resistance! Hopefully the video helped. Remember to drain your coolant before you start!

Ya I think the nikasil layer is extremely thin. Less is definitely more when working or refinishing them. I’ll let you know if it doesn’t work for us this season. Our sled is getting pretty old and rough around the edges. Basically just trying to get one more season out of it without spending a ton of money before upgrading

@@JT2JZ I know what you mean ! It's called living off of borrowed time ! Did it last year ! Only had 100 and 105 compression and only replaced the pistons and rings ! Finished off the season that way ! This year added new parts !

We are still struggling with no reverse. Any other knowledge with loosing reverse?

@@JT2JZ Does it do the quick stall upon pressing the reverse button? Does the reverse light show up on the screen? Does it not work everytime or sometimes?

Quick stall if I remember correctly. Happens every time.

I believe our actual numbers were 110 and 115.

Still haven’t got the chance to break it in and retest unfortunately. It’s been -40c for what seems like a month now. Patiently waiting for the weather to cooperate

Primary clutch? What exactly in the clutch wore out if you don’t mind me asking?

@@JT2JZ Yes sorry i should have been more specific. Primary clutch first presented an issue like you showed- would die trying to reverse. Shaft overheated from what i was able to tell, no salvaging it or rebuilding just needed to replace.

Good to know. Thanks for the input!

Old compression was 110 and 115 if I remember correctly. Never tested it new. Sled hasn’t been ran much. We believe it still needs reeds

No bogging issues but my root issue was stator and not compression. I think you are on the right track

The compression wasn’t much different to be honest. Maybe 5psi better if that. We still don’t have reverse so maybe it wasn’t the root cause of all the issues.

I used lint free paper towel. Using a flat head screwdriver I just pushed the folded up towel into the bottom end and it actually worked pretty good.

The stator was the root cause of no reverse. Not a compression issue. The sled is still running good but unfortunately we haven’t put a lot of kms on it as this winter season has been horrible for snow ( I can still see my lawn ). I’ve never experienced a winter this warm in my entire life. Scary stuff.

@JT2JZ The weather patterns in the past few years have been getting more and more unpredictable. I am from Wisconsin. We ended up with 50° weather Tornadoes and Large Hail, which destroyed any chances of getting back out. Put on about 250 miles in January.

@jordanthomas2210 I live pretty close to revelstoke ( one of the best mountain sledding areas in the world ) and currently there is not enough snow to groom the trails into the alpine. In the past when you had a bad snow year you go to revelstoke and they always have snow no matter what. Pretty heavy drought this year. Im very nervous for summer. They are predicting a bad fire season now without any mountain water run off over the spring. I’ll keep you posted on the sled if we get it out more but it’s not looking promising.. this weekend we are using quads and dirt bikes

@JT2JZ l definitely see why you would be nervous. I have heard a lot of the same. Ride safe🤘

@jordanthomas2210 you as well brother

It probably isn’t that low on these older Polaris engines. I’m a skidoo guy so I though it was low when it likely wasn’t.

Pro X pistons.

I believe it’s normal? Basically a stock sled

The sled still runs pretty good. Still doesn’t have reverse though.

I thought they were supposed to be 130-140ish new? You may be right though. The sled may have needed reeds more than a top end.

@@JT2JZ I’m pretty sure spec is 120, I know the new CFI motors are a lot lower then normal years!

Thanks for the info man. Reeds will be next on the to do list for sure. Hopefully that will give us back reverse again

@@JT2JZ still got no reverse? What rpm does the sled idle at? Have you done a compression test since the rebuild? Outta curiously what was it?

Haven’t really rode it yet to give the sled a good heat cycle and let the piston rings seat. Hopefully this weekend we will put some more time on it and take it for a good burn As of right now still no reverse.

Ya it took some time to clean that out

Bye bye crank your days are numbered

She’s still running strong. We got the coolant out before reassembling obviously