Norse
Pro
- Joined
- Jan 1, 2019
- Messages
- 181
- Location
- Sápmi
- Country
- Norway
- Snowmobile
- 2013 Arctic Cat M1100 HCR 162"
Boondocker turbo 250HP(sold)
2016 Yamaha SR Viper MTX LE 162"
MCXpress 270HP, lots of mods (sold)
2021 Arctic Cat M8000 Hardcore Alpha 155"
N/A (sold)
2023 Yamaha SW MTX LE 153"
M&M Racing 270HP, Elevate, lots of mods
I run 15psi boost on 93 octane fuel as recommended by mcx, but I recently got my hands on some AVgas 100LL. I decided to go 50/50 with AVgas and 91 octane.
What boost can I safely run with this mix, eventually other mixes?
I'm guessing all I gotta do is adjust the wastegate actuator.
What boost can I safely run with this mix, eventually other mixes?
I'm guessing all I gotta do is adjust the wastegate actuator.
Norse
Pro
- Joined
- Jan 1, 2019
- Messages
- 181
- Location
- Sápmi
- Country
- Norway
- Snowmobile
- 2013 Arctic Cat M1100 HCR 162"
Boondocker turbo 250HP(sold)
2016 Yamaha SR Viper MTX LE 162"
MCXpress 270HP, lots of mods (sold)
2021 Arctic Cat M8000 Hardcore Alpha 155"
N/A (sold)
2023 Yamaha SW MTX LE 153"
M&M Racing 270HP, Elevate, lots of mods
Can I get an answer before my season ends?
kviper
VIP Member
Well being no expert's are chiming in I will give you my opinion. You're probably not getting a response because almost no one uses it. I've always been told that av fuel is ment for airplane's and has things in it specific for that application. I would use c12 for mix but compression, fuel system, turbo, etc are also factors with going up with boost. I ran straight c12 in my Nytro at 17-18lb but everything was built for it.
Norse
Pro
- Joined
- Jan 1, 2019
- Messages
- 181
- Location
- Sápmi
- Country
- Norway
- Snowmobile
- 2013 Arctic Cat M1100 HCR 162"
Boondocker turbo 250HP(sold)
2016 Yamaha SR Viper MTX LE 162"
MCXpress 270HP, lots of mods (sold)
2021 Arctic Cat M8000 Hardcore Alpha 155"
N/A (sold)
2023 Yamaha SW MTX LE 153"
M&M Racing 270HP, Elevate, lots of mods
I've heard only positive things of it being used on boosted 4-strokes. MPG hasn't decreased noticably on the boost I'm running now. What did you have to modify to make it run on that boost?
Shop said my mcx box supports 290hp. Just wondering how much boost that is.
Shop said my mcx box supports 290hp. Just wondering how much boost that is.
kviper
VIP Member
Carillo rods, weisco pistons, 2871rsx I think it was turbo, injectors if iremember correctly would support about 350hp, external high pressure fuel pump and regulator. The total build was done by Full Power Performance. I figured 17-18lb boost was about 330hp. I didn't want to push 350 because of running near the end of the injectors.