Turbo Mountain Max

I had this thread in the yamaha boosted section but I figured that alot of you guys might not jump over to that since you probably dont have a boosted sled.

I have seen other threads on here and on other sites that people are wondering if this is possible. Based on other threads and things that I have heard it is possible. I have heard that Dan Richter had a turbo mtn max in thunderstruck 3 and one of the earlier mountain mod mania videos, i personally have not seen any of them. Everyone on these other threads have said that they are going to do it and have already started, yet they cannot seem to post a picture.

Earlier this summer I decided that I was going to try it, so I started finding the pieces I was going to need. I mounted the turbo right off of the manifold where the three ports go into one. From there

Turbo - off of a 2002 Subaru WRX. (TD04 13G)
Intercooler - top mount off of a WRX
Exhaust - pipe done by myself ran into an SLP can
Intercooling piping - I pieced everything together (turbo to intercooler and also the piping I ran for the fresh air.

As far as jetting what I have read from other people that have turboed carbureted 2 strokes they use power jets. I havent quite figured out what I am going to do. More than likely I am going to use the power jets. I am also looking at different options that I have for fuel pumps.

The turbo is liquid cooled so I am going to tie that in with the coolant lines. I am thinking that I will take the carb warmers out since I have never used them and I will use those lines to do the cooling.

Now the trickiest part of the whole thing besides tuning will be oiling the turbo. I will have to have a catch can and a pump to get the oil to the turbo and it will be gravity flow back to the can. I have talked to some buddies that know turbos and they said an option that I might have is since that a subaru turbo is ball bearing I might be able to cap the drain off and fill the turbo with a good synthetic oil and then cap the top off and not even run a pump. They said I could probably get away with this
because it is liquid cooled. I was thinking about doing this for test puposes because if it doesnt work I would rather not have a pump laying around that is about $250.

I am hoping to be able to run it in a couple weeks as I am still waiting for a few things to get here.

Let me know what you guys think. Like I said this is all basically an experiment. I know that it is possible to turbo a carbureted 2 stroke so I thought that I would try it since no one else has posted any pictures or info on how they did it. I personally think it would be an accomplishment for myself and the people that have helped me.

Here are some turbo pictures



Basically everything is plumbed that I will need with the exception of a few things.


This is a little better angle.




Here is a few pictures of the sled.

2000 Mountain Max. 700. Polaris skid. 151. SLP can. 10" risers. Fly sno-x bars. nytro skis. dirtbike seat(i made the mount). 2 wheel kit that i made. metal front bumber(broke the plastic one on a tree so i made this one). Excuse the trailing arms(going to get new ones but i had to fix these last year a couple times)












Let me know what you guys think.

Any suggestions or advice would help.

Thanks

I guess i dont see how the 13g is too small. I believe that anything bigger it will take way to long to spool and by the time i hit boost i will be out of RPM. I understand i still have to do some plumbing for the liquid cooling. the pipe from intercooler to carbs. as far as the charge pipes go i will see how it works and like i said this is just an expiriment. i dont know if this is going to work or not so as far as the money i am putting into it isnt a whole lot. as is sits now i have around 100 bucks, with turbo and intercooler.

swrev said:

That is cool as hell. I've been wanting to do that to my old Max--I actually kept it just to turbo it someday.

Agree w/ other posts, going to need the pipe to get it to run correctly, but it would still be interesting to see how it does. Really interested in what you find out about capping the turbo oil lines, sure would make the project simple, and how long the pistons will last w/ that size of turbo. I've got a freebie Subaru turbo sitting in my basement that I started to mock up for my Yamaha.

What are you doing for the air box? The steering post and how it comes around the carbs makes it a little akward. I was thinking of running tubes or intake runners together instead of a box (check out Boondockers new torque building air box--I knew it was a good idea )

Keep us posted.

Click to expand...

the intercooler that you see is the air box. fresh air comes on from the tube off of the left tube(opposite of the exhaust). All i have to do is run pipe from the bottom side to each carb. I dont have any problems with the steering column because of how the intercooler sits.

http://www.youtube.com/watch?v=CjFOOG1WYws

Wanted so share this video. Originally when i got the idea i was going to put it in place of the can. i figured there was alot more room there. then i found this video, so it made me think that maybe that would be a better place to put it. I guess now it just makes me wonder. I just thought that i would make the attempt because i do have another mtn max if something does happen to this and it is down for a couple weeks to rebuild it.

I know i need to get it going. I have been trying to just work on it as much as i can after work. the turbo srx is pretty cool. I was just going to do the oil that way to test it but im thinking that if it would work i would just keep it that way.

What do you think about keeping the turbo in that spot? the polaris that i posted up is running. there is another video of him riding it in a parking lot. You think that if it wasnt going to run right it would've burnt down long before the videos would have been made.

I know alot of people are concerned about the connectors on the turbo (mostly on the charge pipe) I have seen guys run stuff that makes these look like gold. ha. and those are holding up to 14-16 pounds of boost. this will be somewhere around 7 because of where the stock wastegate is set. I will have to run a boost gauge and watch for boost leaks.

As far as the carbs go do you think that the power jets would do what i need? because i have no idea where i would even start the baseline jetting.

I honestly dont think that the turbo that i am using is too small. I have talked to some guys that know the yamahas and they said that something around this size should work. you obviously dont want to go too big or else by the time it spools you will be out of rpm as i said earlier. i guess we will have to see i guess.

I did however plan to have the first start up and ride on video. then if something does happen i can at least say i tried. you should get going on yours too.

How big is the subaru turbo you have?