blown engine help

[rotormech]

just towed in my 04 800 summit from kakwa.looks like hopefully a wrist pin bearing let go but could be crank goodies too.(theres a piece of somthing in the top of the piston)whats a good big bore kit out there,or does a guy just replace one cylinder and new piton kit?any thoughts would be nice...

 

[Powertool29]

Don't know about the big bore kit, but while you are in there you might as well replace what you can because you have it apart and it is easier to do now. My buddy had his come apart on him last winter and the further he pulled it apart the more that had broken so he scrapped it and bought a new Summit.

 

[crazy_wheeler]

Them new summits still have a bug or 2 in some of the engines.... I had a crank bearing pile up on my '08 XP this past friday up by the cabin in Renshaw...Chitty, very chitty as there are only 570 miles on the motor and it's stock other than a CPI can.

 

[rotormech]

that the chits but i feel better,at least it blew still on the trail,easy tow home

 

[162SKIDOO]

just towed in my 04 800 summit from kakwa.looks like hopefully a wrist pin bearing let go but could be crank goodies too.(theres a piece of somthing in the top of the piston)whats a good big bore kit out there,or does a guy just replace one cylinder and new piton kit?any thoughts would be nice...

i have the 04 800 ho too....replaced the engine last year. lots of miles....it was ready to blow.
The 827 kit from specialty sleds is really nice.
Give ken a call.

 

[raustincat]

if your going to go big bore go 860... i have a few buddies with revs and have 860 kits on them... man oh man do they ever perform well... like i mean really really well... my two buddies have lots of cash sunk into suspension and attack angle and such but none the less... from what i've seen the 860 kit rocks on those doos!!!

 

[sumx54]

Them new summits still have a bug or 2 in some of the engines.... I had a crank bearing pile up on my '08 XP this past friday up by the cabin in Renshaw...Chitty, very chitty as there are only 570 miles on the motor and it's stock other than a CPI can.

What kind of oil are you running Marty ?

 

[sumx54]

if your going to go big bore go 860... i have a few buddies with revs and have 860 kits on them... man oh man do they ever perform well... like i mean really really well... my two buddies have lots of cash sunk into suspension and attack angle and such but none the less... from what i've seen the 860 kit rocks on those doos!!!

I thought you could only go to an 860 from an 800r engine? I think his is a 800 ho?

 

[HagmanMod1]

you can get an 860 for the ho but some guys say it doesnt work as well as the 827 on the h o

 

[raustincat]

I thought you could only go to an 860 from an 800r engine? I think his is a 800 ho?

i was unaware you couldn't do it on an 800 ho... maybe the 827 is better a better fit then...

 

[Quagmire]

The cylinders in the 860 big bore are thin. The 827 is the best big bore for the HO engine.

 

[162SKIDOO]

if your going to go big bore go 860... i have a few buddies with revs and have 860 kits on them... man oh man do they ever perform well... like i mean really really well... my two buddies have lots of cash sunk into suspension and attack angle and such but none the less... from what i've seen the 860 kit rocks on those doos!!!

you cant put an 860 kit on the 03 04 05 06 engine...only on the 07 and newer 800r engine.....1st generation engines are two cylinders with not enough meat on them....07's and up are one casting enabling the bigger kit....so i believe....im up for correction but i dont think so because our group has 04 to 08's with every kind of kit in them---just my 2 cents

 

[steveo10]

you can get a 840 out of the 800H.O

 

[HagmanMod1]

there are 860 kits out there for the ho but they say the 827 is better because like you guys said the cylinder walls are to thin and i dont recall the name of the kit. i run a 860 in my 07 and turbopru runs the 827 on his 06 and they both pull pretty good

 

[teamgreen]

Surprised I'm the first to say this, but recycle the Ski Poo and make it into pop cans and buy a Cat!

 

[caddy]

that the chits but i feel better,at least it blew still on the trail,easy tow home

you get an easy tow every time as long as you keep wrenchin on that copter!lol

 

[Alberta Boy]

you cant put an 860 kit on the 03 04 05 06 engine...only on the 07 and newer 800r engine.....1st generation engines are two cylinders with not enough meat on them....07's and up are one casting enabling the bigger kit....so i believe....im up for correction but i dont think so because our group has 04 to 08's with every kind of kit in them---just my 2 cents

THAT IS INCORRECT!!!

If you want to continue to use the 800 HO jugs the largest BB kit that you can run is a 827... if you don't mind buying new jugs, you can get the "r" jugs to big bore... pretty expensive to buy new jugs and THEN send them away to get BB done to them... up to you and how big your bank account is!