rxrider
Jan-Ove Pedersen
- Joined
- Apr 25, 2003
- Messages
- 7,355
- Age
- 60
- Location
- Lakselv - 70N & 25E
- Country
- Norway
- Snowmobile
- 2014 Phazer XTX, 2013 Phazer RTX, 2008 Apex RTX, 2007 Warrior, 2006 Attak
Yeah I know, even Usko has to pay Erik at MCX a visit to dyno his big guns. Usko's dyno is only capable of dynoing them 2smokers, less than 350 HP that is.
Hahaha it's hard waiting around for parts, even harder waiting around to order parts
Let's go visiting Erik as soon as your sled is done.
Hahaha it's hard waiting around for parts, even harder waiting around to order parts
Let's go visiting Erik as soon as your sled is done.
We will for sure... I wonder how much HP the sled Usko Built for John Landsverk is producing? Usko was going to build a 600 hp motor to him last I've heard...
But, to answer the original question what Does it take? With the powderlites turbokit, running wiseco 10:1's and 2 or 3? Gaskets, 10mm head studs(no machining required, correct?) carillos and meth injection, what kind of boost could you be able to run and what kind of hp would you expect, on premium pump?
But, to answer the original question what Does it take? With the powderlites turbokit, running wiseco 10:1's and 2 or 3? Gaskets, 10mm head studs(no machining required, correct?) carillos and meth injection, what kind of boost could you be able to run and what kind of hp would you expect, on premium pump?
mattymac
Extreme
- Joined
- Jun 13, 2006
- Messages
- 51
obr said:We will for sure... I wonder how much HP the sled Usko Built for John Landsverk is producing? Usko was going to build a 600 hp motor to him last I've heard...
But, to answer the original question what Does it take? With the powderlites turbokit, running wiseco 10:1's and 2 or 3? Gaskets, 10mm head studs(no machining required, correct?) carillos and meth injection, what kind of boost could you be able to run and what kind of hp would you expect, on premium pump?
I think most will tell you to run JE pistons instead of wiseco's.
rxrider
Jan-Ove Pedersen
- Joined
- Apr 25, 2003
- Messages
- 7,355
- Age
- 60
- Location
- Lakselv - 70N & 25E
- Country
- Norway
- Snowmobile
- 2014 Phazer XTX, 2013 Phazer RTX, 2008 Apex RTX, 2007 Warrior, 2006 Attak
Just shy of 500 HP, that's what Erik said last time my friend (with the 377 HP Apex) was paying MCX a visit. I heard Landsverk and CO have hired Niclas Ottoson as their chief mechanic to build their new sled for next season. And I've also heard that MCX have something huge up their sleeves... 600+ HP is not impossible, I've heard a rumor Erik is building something crazy for a Norwegian customer, we'll see.
No machining required with 10 mm studs, I think you are correct on that one.
No machining required with 10 mm studs, I think you are correct on that one.
rxrider said:Do you mean the MCX head shim? It's 0.059" thick.
What sled? Did you use any stock head gaskets or did you use a split gasket on each side of the shim?
Yeah I'm pretty safe at 16 lbs or 1.1 bar of boost, it have survived up to 1 km WOT runs
If my calculations are correct, the Apex with 2 stock head gaskets and the MCX head shim running stock pistons will have a CR of 8.94:1.
Running 10:1 pistons CR will be at 7.93:1.
Meth is in my future that's for sure. Hurricane have run meth for some time so I guess he have the programming of the kit done, he should be able to set it up to work the best in our applicationsI will definitively look into raising my CR when spraying meth for even better throttle response. I will do some reading on the subject tonight.
My best guess would be somewhere between 16-18 lbs on a big turbo, and more with meth to push it past 400+ HP, you may have to pull timing at full boost. Remember MCX was able to make 370+ HP on pump premium without deto control aka meth injection. We'll figure it out![]()
Was your buddy on pump who dynoed 370? I thought you mentioned he was running 104 octane.

rxrider
Jan-Ove Pedersen
- Joined
- Apr 25, 2003
- Messages
- 7,355
- Age
- 60
- Location
- Lakselv - 70N & 25E
- Country
- Norway
- Snowmobile
- 2014 Phazer XTX, 2013 Phazer RTX, 2008 Apex RTX, 2007 Warrior, 2006 Attak
Sunoco GT Plus 104 race gas on my buddy's '06 Apex MCX400 turbo sled
It can handle up to 1.1 bar or 16 lbs on pump premium, it was making 322 HP on the dyno at 16 lbs. Then we put in race gas and upped the boost to 1.35 bar or 20 lbs where it made 377 HP after some fuel map tuning. This HP #s were made without adding a correction factor to the dyno, so this should be real HP 
HURRICANE said:Yes I did.I'm a big fan of meth injection.Tuned properly,Meth eliminates all detonation. I have some guy's using meth with big boost and stock compression with no detonation on pump gas on the trail.
Yep i did!!!!!
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So what you guys are saying is I can turn my boost up, if i get this meth kit. The engine is stock, no head shims, or pistons. Running 660ft grass with 100 octane race fuel. I'm running 8 to 8.5lbs of boost now.
FLYBYU said:So what you guys are saying is I can turn my boost up, if i get this meth kit. The engine is stock, no head shims, or pistons. Running 660ft grass with 100 octane race fuel. I'm running 8 to 8.5lbs of boost now.
Yes, set up properly you can dial the boost up with meth.
I ran 15PSI of boost stock motor on pump 93 oct.
Skydog
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
Skydog
i'll be ordering my snow performance kit tommorrow from work then
powderlites
Expert
Apex Big HP
Fastek pulling some good numbers with his stage 1 Apex with muffler out the back.
We are working on a Apex stage 2 kit and I am sure we have 400 HP once we find dyno.
Injectors changed out and Rapid Bike 3 = 363 HP Stock motor!!?
http://www.powderlites.com/access.html
Fastek pulling some good numbers with his stage 1 Apex with muffler out the back.
We are working on a Apex stage 2 kit and I am sure we have 400 HP once we find dyno.
Injectors changed out and Rapid Bike 3 = 363 HP Stock motor!!?
http://www.powderlites.com/access.html
Dave: I've sent you some mails. Tried calling you, but didn't seem to be able to get through. Let me know when you've got a chance to reply. Getting ready to order some stuff....
Bull
Bull
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