As a disclaimer, I have tried researching this myself and have not came across much. I plan to keep looking into this, but I would enjoy hearing your guy's feedback. I had have heard of talk about turbos being added on snowmobiles since I started getting into Sledding about 2 years ago. Recently I have pondered the idea of putting a turbo on my Reliable "Old" 600 H.O. SDI Rev. its an 03 but with the "Beaver Tail" delete. I thought it would be fun to add a turbo to that since it would give me a summer project that posed a challenge, that sounds fun. in addition, it would add a little extra oomph to the sled.
Where I am at right now:
I do not want to risk the reliability of my rev, especially since the only current issue is the possibility of crankshaft bearings going out. I will be monitoring that but I thought if I took on the turbo project I might as well give it the best odds that i can for succeeding. In a perfect world, let us say that I have a freshly rebuilt 600 H.O. with its only issue being my interest in not letting it be . In a perfect world i would also have all of the parts on this sled which could be modified if need be. The fabrication side of things should not be an issue though. I know that turbos can work with carbs, it is just vastly more finicky than EFI systems. Also also, the lowest I would go in fuel quality is 90/91, I always run premium gas and i do not want to have to mix up "race fuel"
What I have Read:
* SPI made a turbo kit
* It would be recommended to go with a low compression head for the cylinders
* I need a pressure regulator somewhere
* I may need a different fuel pump
* 4d turbos allow you more time to shut off your sled before it reaches "Detonation"
* 2d turbos do not allow you that safety net
* Some guy installed a thing that when his engine started to run too lean, it shut off the engine (more of an insurance measure
* You need a "Blow Through" carburetor or need to modify your carb to be "Blow Through"
* Butterfly Valves do or do not work for turbos
* You have to weld up an air box ( Im curious about what all the tubes to it do )
* Anything above 4 lbs of boost is dangerous to your engine
* some turbos need an oil pump (can this run off of the oil pump that is "behind" the engine? the one on the lower block )
* supposedly the exhaust pipe can cause some issues with the turbo since it has the pressure waves?
* Turbos can cause carbs to run too rich at low RPMs and too lean at high RPMs (is there a fix? another pump? or a valve of some sort?)
I do not want to add big bored 600 cylinders, 700 cylinders, 800 cylinders, or big bore 800, I want to be able to say that I have a turbocharged 600 rev I also do not want to rely on constantly buying Nitros containers. Topics on turbos for older sleds seem to have been dead since 2015 at the latest. Any feedback is appreciated, even if it is "have your cylinders Bored out and have them replanted"
Edited by Zack Watters, 29 May 2020 - 10:53 PM.