What To Do When Your Motor Is Totaled??

[munki63]

Turns out i have the WORST luck with skis Last year i bought a 95 it broke down every weekend, So I bought a 06 and over the winter added almost everything you can only to find out the pistons are toast....
The pistons are so bad i have to bore it out and get new pistons how much should I bore out and will i have to change any of my mods

Head 33cc doms
Mod B-pipe
dual 44
msd cpu
9/15 hooker

 

[stanton]

thats not the worst luck, theres worse things. thats hardly totaled.
you need to figure out what went wrong though.
send it to watcon and he will bore/hone to match the pistons.

 

[djkorn1]

Buy a complete top end kit from wiseco and then bore it one size over.

Luckily, your cases, cyllinder and crank (I assume) are all fine...if those were all toast, then your motor would be totaled.

 

[munki63]

you need to figure out what went wrong though

Bought the ski off eBay, No Idea what went wrong reeds are good no chipping, i have no idea I put all the parts on and ran the ski and i just couldnt tune it right until i did a compression test and with 35 cc domes i was getting 125 and 150 to I took the head off and looked at the cyinder and thats the problem, there is a local guy thats going to port and bore it but how big do i go and will my head/domes still work?

 

[OCD Solutions]

Matt, swap in the ported 701 out of the white square and rock it with that original single 44mm mikuni I sent you, It has less than 15 hrs on a fresh crank and top end and less than 2 hrs with a lightened flywheel. It was a very strong motor that I would have loved to drop a B-pipe onto. Check timing first cause I think it may actually be retarded a degree or two, it should like 3 degrees advance. I got over 9 years out of that setup with no tuning.

 

[munki63]

Matt, swap in the ported 701 out of the white square and rock it with that original single 44mm mikuni I sent you, It has less than 15 hrs on a fresh crank and top end and less than 2 hrs with a lightened flywheel. It was a very strong motor that I would have loved to drop a B-pipe onto. Check timing first cause I think it may actually be retarded a degree or two, it should like 3 degrees advance. I got over 9 years out of that setup with no tuning.

I tried that when i tried putting the head on the threds let go in the block before i got to the torque setting(3 out of the 10 all on the exaust side)
So that one is pooched right?

 

[OCD Solutions]

The threads stripped on the cylinder or the cases? There was one that was stripped on the cylinder, (center carb side). You could drill and helicoil them yet. That was my plan if any more let go.

 

[munki63]

The threads stripped on the cylinder or the cases? There was one that was stripped on the cylinder, (center carb side). You could drill and helicoil them yet. That was my plan if any more let go.

Cases just like the one you drilled, the one you drilled is too big for the head, if i do that all the way around i might get too close to the gasket on my aftermarket head