Blown Motor On My Nytro
- Thread starter apexman
- Start date
What shop is taking care of this guy? I think they are due some business for going beyond the call of duty for thier customers. They seem to be pulling out all the stops to help make things right no matter what the cause. Everyone talks a good game about customer service, few actualy pull through once the money has changed hands.
man you fuggers need to lay off this guy a bit,his post was a little miss leading,lets give him a break he already bought 2 sleds this year,and casey just for the record i have run 18lbs on chevron fuel lots,on my apex 3600kms no problems,i dont make a habbit of it but when my buddy shows up with his alpine apex,and wants a shot at the title,the last thing that goes through my mind in fuel!!!! JUST PINN HER MAN TO THE TOP!!!!!I might be rolling dice but i will worry about that later!!!! P.S by the way myles is one of the best!!!
G
geno
New member
The thing I can't figure out with all this is that a sled that has clutching dialed for 12-14psi (if that was what it was supposed to be at) is not going to run at 18 psi without being on the rev limiter.
OK So they dyno this thing....it makes 18lbs boost on the dyno?? Or did it magically go up once he hit the hill?? I know myles has put lots of turbo sleds out but this just doesnt make sense...And when darren had it to the bar he saw 18 so why hold it?? Like everyone else said....we all know 14ish is pushin the bar on pump gas.
when Myles dyno's a sled, it's to see exactly what kind of power a sled is making. He does this to make sure he has the optimum setup and the sled is running the way it should be. now whether darren saw this and why he did 5 runs at 18 pds boost on pump gas is beyond me. I know for a fact that Myles would not tell you to run your sled at a boost level that is beyond what it should be running. according to myles, the nytro kits are supposedly supposed to be like the 07 apex kit's where the kit is regulated and only supposed to run a maximum amount of boost before the kits bleeds off the excess. after talking to Myles, the nytro kit apparently is not doing this, and thus the reason for the 18 pds. he mentioned something about the actuator rod beng to short(I dont know if it didnt' have any more adjustment, or if the rod itself was too short from MC X) thus the sled is pulling way too much boost. Because of this, this is why Myles is standing behind his install(top notch and above what he should be doing) and keeping Mr Darren happy. from what I gathered, Darren should have noticed this 18 pds (especially on a first ride on a brand new sled) and should have backed the hel! out of the throttle especially running pump gas. Myles did not tell Darren to run this thing at 18 pds boost on pump gas. So, Darren consider yourself lucky that you have a top notch dealer looking out for you.
L
Linc
Active member
Ok,,,so Apexman,here's something you might not know about EFI and turbo's,and you have find out this BEFORE you even ride your sled,if your mapping is NOT set up for 18 psi,you CAN NOT run 18 PSI,,,ever,,,even with race fuel,the mapping does not know how to give the engine more fuel at 18,I suspect it had stock mapping and the map only knows how to deliver fuel at that map preset,if you go over,it will not deliver enough fuel,period.So make sure with the next engine,what the mapping is set for,but anything over 15,regardless of the map set,you will need race fuel.
With the Vector and Nytro,lean overboosting will lead to rod failure first,then with very little warning, the rod will snap and go through,you will hear it first,and if you can react in time you will save the cases,(ask me how I know)and it's almost always the center rod that goes.
As for Yamaha paying for cases,they know EXACTLY what causes this failure,don't count on warranty.
With the Vector and Nytro,lean overboosting will lead to rod failure first,then with very little warning, the rod will snap and go through,you will hear it first,and if you can react in time you will save the cases,(ask me how I know)and it's almost always the center rod that goes.
As for Yamaha paying for cases,they know EXACTLY what causes this failure,don't count on warranty.
M
Mcx Nytro
Well-known member
Supercharger are quite a bit diff from turbos....no head shim no cold air and mpi....sounds like a 3 handicap to me
??
the point was that it wont overboost and maybe better for a person that doesn't know what boost means in terms of fuel and hp. i know mcx is a great kit, and probably a better hill climber, head shim? its like adding compression with boost then taking it away with more space in the combustion chamber, more to run poor fuel than anything else. cold air? they have intercoolers! as far as mpi, dont know yet, no troubles yet but from what i hear, it took them awhile to get their chit together. aparently the stage 1 is working great but stage 2 goes beyond the limits of the stock fuel system, and this would go for anything turbo or sc making 280hp. does mcx come with a fuel pump and regulator? the stage 2 sc should and it doesn't. flappin your gums just shows your bias, not fact. do you think mcx coming with a linkage rod too short, making 18 lbs boost instead of 14 is the sign of a good company? pull your head out of your a$$ and see the fact that whatever kit you choose can have its problems when your running on the edge soo far beyond stock horsepower, there will be some problems. but who has blown a motor with a sc? the only problems they've had is their pulleys coming loose, which they've sorted out a long time ago, and their fuel mapping on the stage 2, which requires the use of a fuel pump and regulator. but if your over 6000 feet the stock fuel system will keep up, but just barely.
my .02
Supercharger are quite a bit diff from turbos....no head shim no cold air and mpi....sounds like a 3 handicap to me
the point was that it wont overboost and maybe better for a person that doesn't know what boost means in terms of fuel and hp. i know mcx is a great kit, and probably a better hill climber, head shim? its like adding compression with boost then taking it away with more space in the combustion chamber, more to run poor fuel than anything else. cold air? they have intercoolers! as far as mpi, dont know yet, no troubles yet but from what i hear, it took them awhile to get their chit together. aparently the stage 1 is working great but stage 2 goes beyond the limits of the stock fuel system, and this would go for anything turbo or sc making 280hp. does mcx come with a fuel pump and regulator? the stage 2 sc should and it doesn't. flappin your gums just shows your bias, not fact. do you think mcx coming with a linkage rod too short, making 18 lbs boost instead of 14 is the sign of a good company? pull your head out of your a$$ and see the fact that whatever kit you choose can have its problems when your running on the edge soo far beyond stock horsepower, there will be some problems. but who has blown a motor with a sc? the only problems they've had is their pulleys coming loose, which they've sorted out a long time ago, and their fuel mapping on the stage 2, which requires the use of a fuel pump and regulator. but if your over 6000 feet the stock fuel system will keep up, but just barely.
my .02
L
Linc
Active member
Wow,, they come premapped to 18 psi! At any rate, that philosophy stands for any mapping set,If it isn't mapped for it,,, don't go there...EVER.Linc, The mcx nytro's are mapped up to 18.3 lbs. He would have been ok if he was running straight 100ll.........and he knows that now, RIGHT
Yup,,, 100LL would have been a safer.
I think the guy has been beat up enough now,he's going to so freaked about fuel now.
L
Linc
Active member
The MCX system should never leave the shop without the extra fuel pump,this happened to one of my customers,he pushed it to 22 psi and sliced the pistons open( Apex)and the reason is the fuel system can not supply the fuel needed for anymore than 15 on the stock pump,,,,by the way I told him NOT to go past 15,,,that's why we spend money on a boost gauge.
I don't get it, I ran 35lbs of boost on pump fuel..... in my Dodge.
Yea, stock clutch.
M
Mcx Nytro
Well-known member
Actually FACT they have more than just pulley prolblems...3 pages of problems I downloaded them for my buds that ride the sc..And yes they have an intercooler but where do they draw air from???Under the hood. So not only are they drawing hot air but then compressing this already hot air adds to this problem..And yes I AM biased towards the turbo. When I decided to go boost I read the many thousands of comments about turbo vs sc and I found a LOT more problems with the sc. I would have thought that a company would have these bugs worked out after 5 years of working on the product, and not let the customer figure it out and NONE of the repairs to the 3 pages are covered by them, The mcx box sucking water is fixed by my dealer as is the bigger sock to stop the icing
And yes the mcx did come with a bigger fuel pump
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robertyoke
Well-known member
only 45! mine will peg the 60psi isspro in a blink of an eye! I see 45psi towing the trailer ......can I put twins on the nytro!! LOL
-Robert
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