Anyone have a RK-Tek big bore on a 800R?

[SkiDooDude]

I too have been hearing that he is verry good.
Hows the fuel consumption with his motors?
What kinda HP can he get out of an "R"?
He's in Rochester Mn. is'nt he? -- not too far from me.

 

[Original Tetonice]

I too have been hearing that he is verry good.
Hows the fuel consumption with his motors?
What kinda HP can he get out of an "R"?
He's in Rochester Mn. is'nt he? -- not too far from me.

Deep snow riding above 8000' i get 50 miles per tank before im on fumes witn the Trygstad motor. Anytime a mod motor can get 50 miles per tank under those conditions thats pretty darn good...If im doing nothing but beat on hills i might only get 40 miles per tank.

Skidoo's like any other mod 2 stroke historcally likes alot of fuel to make the HP.

AIR + FUEL = HP

OT

 

[Wheel House Motorsports]

I have been running an RKT 738 that i burned down twice. they were both my fault. BUT. when i got the engine rebored locally, my machinist got me some weisco pistons, Kelsey insisted that this thing would burn up right away with them, which makes no sense as i just put 150 miles of hard riding on the sled the last 3 days. i have done a few donuts spiraling outwards in about 2 feet of fresh at WOT for around a minute, and the thing still isnt burned up, so i dont know what Kelsey was saying.

and if you wanna get ahold of him dont call during the day. the only time i have gotten ahold of him first try was on a sunday before christmas at about 4 in the afternoon, other than that its call 3-4 times a day for a few days, and his voicemail was full almost all winter. one of my buddies was gonna buy his diamond drive clutch kits, but didnt because he couldnt get ahold of him after a while.

 

[sloppy2nds]

the claimed hp gain of 10 is just that a claim. and seriously 10 hp is nothing. 150 on a good day stock or 160 on a great day modded. not worth the money for your case in my opinion. i had a skidoo factory mod engine for a time or two, it sounded cool with the twins and skidoo seems to think that its over 170 hp and i dont doubt them but i seriously couldnt tell the difference over my stock sled. ill tell you where i think you should spend your money...clutching, clutching and more clutching and then some nice suspension to compliment it and maybe a bigwheel kit. that is how you get power to the hill. for all of us who live where the riding is sweet a big bore is sometimes practical, but for a traveler its just a headache. if you have to have it then i can say that i saw a trygstad sled on the hill not too long ago and that was an engine built by a guy that know what hes doing. rkt is not even in the same game as trygstad. good luck with whatever you decide

 

[SkiDooDude]

Tanks for all the input guys!! I have decided against rktek and if ido any thing with the motor it will be done by Trygstead - 2 guys at my dealer know him personally and swear by his motors.
As for the clutch - Dynamoe Joe will be doing that.
I already have a 2 wheel big wheel kit on (9 in. ) and wow what an improvement!!!!

Maybe I should just sno-check a new summit X 154 for 09 and start with that.

 

[jrddillon]

My problem is that I have a 950 to 1250 mile drive to the mtns and i do this twice a year (maybe 3 next year), anyways when i get there i need to know that it is going to RUN - NO IFS ANDS OR BUTS - just run.

my stock xp runs every day, towed two friends rkt revs that burned down ,clutching and jetting nightmare.

 

[jrddillon]

I know a ton of people, 10+, who hae use or are using RKTs mods, and every single one has burned down. But they still use his stuff so what do I know....

You know your sled runs and their sleds don't, and thats why you don't call them anymore when you go ride.

 

[byeatts]

880 R motor

I have been running a trygstad 880r all year.This motor rips but requires some fuel. Mains are 580 with power jets adding a bit more on the top. This sled runs with Turbos and is quite impressive.Aaen pipe with Y pipe and intake mods really produce huge power.Most of the time you dont need to be in the throttle due to the torque gains and milage is a bit less than a stock XP

 

[Visi]

I have been running a trygstad 880r all year.This motor rips but requires some fuel. Mains are 580 with power jets adding a bit more on the top. This sled runs with Turbos and is quite impressive.Aaen pipe with Y pipe and intake mods really produce huge power.Most of the time you dont need to be in the throttle due to the torque gains and milage is a bit less than a stock XP

Why dont you use crankshop twins instead of the Aaen?

 

[Insaneboltrounder/sjohns]

I have been running a trygstad 880r all year.This motor rips but requires some fuel. Mains are 580 with power jets adding a bit more on the top. This sled runs with Turbos and is quite impressive.Aaen pipe with Y pipe and intake mods really produce huge power.Most of the time you dont need to be in the throttle due to the torque gains and milage is a bit less than a stock XP

Runs with turbos? for the 1st 100 feet?

 

[Kingpin]

Runs with turbos? for the 1st 100 feet?

that would be about it...

 

[dicey]

Runs with turbos? for the 1st 100 feet?

you must have forgot to finish your statement ,runs with turbos for the 1st 100 feet [on hard packed snow] turbos don't do all that well in bottomless powder thats were a good running non turbo mod often kicks there azz while the turbo pops and farts sucking powder snow in there blocked of intake after all a turbo needs like 4 times the air to make boost without it there powerless compared to a good mod.just what iv'e seen.

 

[powderidahoan]

I have ridden with turbos. If a turbo is getting bogged down then a regular non turbo sled is going to have the same hard time getting air. Unless it is poorly set up a turbo, in bottomless powder a turbo sled should blow away the non-turbo sleds not just once, EVERY TIME.

 

[High Voltage]

This is the first year I have herd of any problems with RKT stuff. Did the quality go down or was everyone afraid to say something negitive befor for fear of the mob?

 

[SnowSnob]

Surprised no ones mentioned the SHR860 by BJ. If you want something reliable and isn't the spendiest thing out there along with the BEST customer service give him a call, he lives in MN too.
Haven't had a question yet not answered the same day unless I just pm him.
Sounds like he's got an 880 in the works too.

 

[High Voltage]

Surprised no ones mentioned the SHR860 by BJ. If you want something reliable and isn't the spendiest thing out there along with the BEST customer service give him a call, he lives in MN too.
Haven't had a question yet not answered the same day unless I just pm him.
Sounds like he's got an 880 in the works too.

Dropping my 800 p-tek there on Saturday! Your right you can't get better responce time from anyone. (He answers the f---ing phone) LOL

 

[dicey]

I have ridden with turbos. If a turbo is getting bogged down then a regular non turbo sled is going to have the same hard time getting air. Unless it is poorly set up a turbo, in bottomless powder a turbo sled should blow away the non-turbo sleds not just once, EVERY TIME.

yes i agree if a turbo is getting bogged down so would a non turbo it's just multiplied because it needs way more air and in general is also getting more fuel I don't have a turbo just saying what iv'e witnessed first hand in deep fluffy snow countless times early in the year, november ,december you know before the snow sets up .there has been many hillclimbs were non turbo sleds took king of the hill running against turbos Iv'e seen Norm Heibert take king on his 1500psi non turbo when he was the only one that even made it over the hill .these trigstad motors are awsome they definitely lay the smack down if you don't mind race fuel at 10.00 dollars a gallon here in canada and lots of it. The turbo setups are getting better all the time but they will always need large amounts of air without snow dust mixed in it.iI guess i'm highjacking this thread with the turbo thing ,any way I think Big John sells and installs rkt so whether you get it from him or direct from rkt your getting the most economical, pump gas kit available.The trigstad motors iv'e seen were race engines.

 

[EZmoney]

As far as it goes for big bores i would go with sled shed 860 or split sec.There is a sled shed 860 in our group that always works good and has towed a few stock sleds out"dam xp".The hp claims from these big bores are a little off when they tell ya 172+ and split sec is about the only honest guy when it comes to hp #s. Port grinder has always contested the hp # from the diffrent kits, and i have to agree with him. Besides i think he has had a couple, I would think you would be in around 160+ with a rev.Those are the two i would look at that are proven kits that work.

 

[byeatts]

I have ridden with turbos. If a turbo is getting bogged down then a regular non turbo sled is going to have the same hard time getting air. Unless it is poorly set up a turbo, in bottomless powder a turbo sled should blow away the non-turbo sleds not just once, EVERY TIME.

I ran the 880 Trystad in a full mod XRS @ 424 lbs. 2.5X156 .Timbersled front and rear.It highmarked a turbo Apex in deep powder and he attempted 3 times to match it.The weight really comes into the picture in the steep and deep, The turbo power was impressive. I ran it against a turbo nitro which we have not had any new deep snow to compare,It too was impressive on the harder snow.We also have a Turbo dragon which is pretty close in climbing ability however keeping it tunned has beed difficult.People everything has its limits,Some good some bad and there is no perfect sled, The Turbos pay the price in the additional weight and turbo lag!Just ride what fits your style. The 880 is in the same league as the monster turbos and the Turbos I ride with have seen this first hand, The snappy low end is simply fun in the trees and deep bumps and climbs. sometimes they win and sometimes they dont.Irun the Aaen single pipe to cut the weight

 

[Nate]

I've seen a dyno sheet on this motor. To avoid a p*ssing match I will not be commenting.

Was it SEAT OF THE PANTS feeling? thats how Kelsey figures his stuff he doesnt do Dyno numbers

Wonder why?