nytro boost limit question?

WKR · Oct 11, 2008

Can you run a nytro at 22lbs boost with just a headshim, bigger injectors, and straight 111 race gas. will the motor handle that or do you have to do the pistons and rods? I have heard of guys running that much without the pistons and rods, but those were just rumors.

snowy1 · Oct 11, 2008

I ran 22lbs last year with stock motor and 2 head gaskets, yes you can do it with the right fuel, but I would not recommend doing it very long, I have pistons and rods this year.

Motleyone · Oct 11, 2008

Spend $1700 and buy the Rods and Pistons now or Pay $4500 later (not much later) for a new motor. The pistons are not really the issue it is the weak factory rods. Blow one of them up and it may go through your case.

Climbmax · Oct 12, 2008

The only rod I saw fail under extreme boost was a Carillo

I know two reputable boost companies have run well over 20 on OEM rods.
Seems the guys telling us to buy rods are the guys selling them

My motors are stock parts........just buy good fuel:beer;
RS

snowy1 · Oct 12, 2008

As Randy said its all in the fuel, tetonation causes stress on rods and bearings, if you don,t run good fuel it doesn,t matter which rods you have.

WKR · Oct 12, 2008

snowy1 said:
As Randy said its all in the fuel, tetonation causes stress on rods and bearings, if you don,t run good fuel it doesn,t matter which rods you have.

I have tracktek 111 fuel, will that do 22lbs boost? or do I need to bump it up a bit more and what can a guy run with AV gas?

travis · Oct 12, 2008

I think av is a no no and 111 is not enough. Most guys in the Grande Prairie to Edmonton area's are running c16 for that much boost!!!! You spent this much on a turbo, don't cheap out on fuel to keep it running. To many people think they can run a turbo on crappy fuel, when will they learn. If you can afford a turbo, you can afford the proper fuel !!!

woodies · Oct 12, 2008

travis said:
I think av is a no no and 111 is not enough. Most guys in the Grande Prairie to Edmonton area's are running c16 for that much boost!!!! You spent this much on a turbo, don't cheap out on fuel to keep it running. To many people think they can run a turbo on crappy fuel, when will they learn. If you can afford a turbo, you can afford the proper fuel !!!

av gas is 100 octane low lead and fine for boost to 100 octane level of boost!and it is 100 octane garrenteed.i'll be running mine at 12 lbs no head shim on av gas,after all is a low flying craft anyway!and at 520 bucks for 210 liters of race gas which i would blend anyways wheres the savings?2.48 lts plus my o2 senscor burn out!

snowy1 · Oct 12, 2008

Amped said:
Valve springs an head bolts would have to be upgraded tp run the much boost to last

not on the nytro, just tork bolts 20 lbs back off 1/4 back to 20lbs, in the proper sequence then retork 180 degrees in proper sequence. you fuel needs depend on your elevation and compression.

347strokin · Oct 13, 2008

snowy1 said:
not on the nytro, just tork bolts 20 lbs back off 1/4 back to 20lbs, in the proper sequence then retork 180 degrees in proper sequence. you fuel needs depend on your elevation and compression.

This is going to sound pretty simple.
Can you explain why your fuel needs differ at different elevations?
I will be running 12 lbs boost this winter on a Nytro and was told I can safely run 91 octane or higher.
The sled is setup for 10000 ft, and most of my riding will be at 1800 ft.
What do you guys recommend for fuel requirements?

travis · Oct 13, 2008

347strokin said:
This is going to sound pretty simple.
Can you explain why your fuel needs differ at different elevations?
I will be running 12 lbs boost this winter on a Nytro and was told I can safely run 91 octane or higher.
The sled is setup for 10000 ft, and most of my riding will be at 1800 ft.
What do you guys recommend for fuel requirements?

You can get away running lower octane fuel the higher up you go because of burn rates/and more or less air. As you know it's harder to breath up high. So you are burning more fuel compared to how much air you sled can suck in. I ride 4000-6000 ft and run 12 boost with 111 octane and premium mixed 50/50 and have had no problems. But to be honest I would only run straight premium if I had to borrow extra gas for the trip out. Even then I would run my sled easy on the way out. When the dealer tells you it's set up for 10000ft they mean that is what it's clutch for, you should clutch it properly for the elevation you really run it at. Performance gain will be way better. I would say at 1800ft you should at least run 111 race fuel. Install a a/f gauge and make sure the number stay below 13. Safe numbers are 11.5 to 12.5 just so you know. Then with that you can run diffrent fuel to learn what is safe and what is not. You could probably get away with premium if you don't hold it WOT all the time, otherwise it may go KABOOM!!!!!! Hope this helps.

347strokin · Oct 13, 2008

Yes, I will have it clutched right for my normal elevation.
And I'm just trying to decide what A/F gauge I want to run.
Thanks for the reply.

Search

nytro boost limit question?

WKR

Well-known member

snowy1

Free Member

Motleyone

Well-known member

Climbmax

Well-known member

snowy1

Free Member

WKR

Well-known member

travis

Free Member

woodies

Guest

snowy1

Free Member

347strokin

Well-known member

travis

Free Member

347strokin

Well-known member

Similar threads