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Thanks for the replies guys. I think I hit it figured. I did a leak down test and it was 2%in 2 cylinders and 3%in the other. I also drained and vacuum filled the coolant system and I believe there was an airlock in there. As when I tested it in the mountains at the same location and conditions...

No just the stock front heat exchanger and rad and fan.

So I did a block test and fluid stayed blue. So maybe it’s just a coolant airlock hopefully vacuum fill tonight and test again

Picture of it

Also here is a picture and specs of what it has on it.

So I purchased a 2016 viper turbo this summer off a guy. I have not had any good luck with it so far. First ride out it Vapor locked on me and took some time to start. Had to pressure the tank up to get it to go. So I added heat shield and venting to the side panel and fuel line covers to keep...

I can’t comment on the diference in pitches but do not waste your money on the wahl drivers. I got one season with my turbo on them then had to buy avid.

Coming along nicely. There is nothing like the sound of an apex climbing up the mountain. I would love to find a cheep apex for my next build.

Well it’s been awhile since I updated this thread. I still do love this sled it is my go to sled. It’s had a hard life the last few years. Had to replace the track and rail Last year. This year the fuel line rotted out in the tank after the pump so got very little fuel pressure. Also had the...

I can’t comment on the 850 tank but I put a rev tank on my nytro turbo and it wasn’t that big of a deal. I had to make an aluminum cover where the fuel pump screwed in and I used 2 Arctic cat fuel pickups. One in front and one n back. And since you have the 270 kit you already have an external...

Ratchet strap.

Cr racing has a bunch of specialty stuff you will need to make it work. Check them out

Make sure you are using the proper sensor. And make sure it is not a china knock off. I have had issues with knock off ones.

That is exactly the setup and spot I use on all 3 of my Yamahas. Works great.

I really like the look of those. Now I just need to source the materials to make a set. What is the coil from or did you buy these?

On the yamalaris I put a apex coolant bottle on it. It’s small and does the trick. I was looking for just a filler neck and found the apex bottle for cheep so that’s what went on it.

Just a thought but do you actually need the overflow bottle. I tossed mine years ago once the coolant level is good you can forget about it. Since weight is a goal of this build i would delete it.

Well I finally am done sledding for the year. I went out last Saturday for the final ride with it. I really like this sled it still is so much fun to ride. I put in 950 km on this one and only 350 km on my turbo nytro. Unless the snow is crazy deep I don’t ride the nytro much as this sled is...

I’m no clutching expert. I just try different thinks and go off what others tell me. Clutching is all about balance. Do some searching on here for viper setups.

I would ya take out the green spring in the secondary and put on the cat epi purple. The green is way to stiff. And start there. And most folks are running a blue brown blue in primary. 47 helix is the go to for these sleds as well