Turbo Yamaha Snowmobile
 

Hey guys, I have been looking around this site and found a lot of good info. I am currently building a Turbo Nytro Snowmobile, I figure it is a lot like a bike so I thought I would post my progress.

Maybe you can give me some tips this is my first build.

I have not gone too far yet:

1000 cc engine with fuel injection
I have an evo III turbo
intercooler with greedy bov
piggy back fuel controller (i may go a different route)
I will be going with 2" charge tubes (i think that will be good?)
its a rear mount so I will add a scavenge pump
Im gonna start at 6 PSI (this is all the stock pump and injectors will handle) then I want to go to around 10 PSI with either added injectors or just bigger injectors

still in the design phase but wanted to post some stuff up for input

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another shot

should be one bad ass snowmobile. i would keep it to a max of 6 psi. anymore than that and you will need low compression pistons, an intercooler or meth injection to cool down the charge. since its a cold weather toy you maybe able to get away with more boost without an intercooler but i wouldnt risk it.

i would go with an extra injector controller instead of the piggy back. its going to be a low boost build so timing wont be an issue. this way you can use the stock fuel injecton under n/a and then the extra injector controller adds fuel when it see boost.

Thanks for the input, 6 psi puts it around 180 hp at the crank...not too bad haha. I have read some posts about the UDR AIC-6 extra injector controllers, I left a message with tech support but have not heard back. Any thoughts about using that on a snowmobile?

I do have an intercooler too. Im not sure I want to tear into the motor yet though. haha.

that is the exact injector controller i am using on my turbo car. simple wiring. power, ground, tps signal and connect a vacuum line to the controller for boost reference. it will work fine. it uses standard bosch style injectors.

using the intercooler for 6 psi or less will be fine. an intercooler is better than no intercooler.

nice

I wonder if the TPS is going to work on the snowmobile or if it is car specific?

your only tapping into the signal wire of the tps on your snowmobile. all tps sensors work the same.

ok, I was wondering about that. good info thanks.

Take a look at the MCX 180 kit for the nytro. Stock fuel pump is used in the 240hp kit with a set of umbrella injectors. I have installed the 180(6psi), 240(12psi) and 270(16psi) kits from them. the 180 kit doesn't use an inter cooler, the response is quite a bit quicker than the other two that do have an inter cooler. If you have a 2009-2010 nytro use the yamaha 8bu weights, two 17mm steel rivets in each and 14.5mm rollers with stock clutch springs, works just great with the 180 kit, and you don't have massive weights that have a hard time back shifting like with the other levels of hp.