Oversized Piston- spec needed

78kitty · Post by **78kitty** » January 29th, 2008, 2:40 pm

I am rebuilding my sons 78 with suzuki motor and machine shop is installing oversized piston and machining- does anyone know what the piston to wall clearance should be? No local cat dealers here for them to call and get spec from.

Thanks in advance for any help.

kidsperformance · Post by **kidsperformance** » January 30th, 2008, 12:15 pm

.002 of clearance after honing

1121racinkitty · Post by **1121racinkitty** » January 30th, 2008, 11:00 pm

BILL ROCKS!!!!!

THX_138 · Post by **THX_138** » January 30th, 2008, 11:35 pm

1121racinkitty wrote:BILL ROCKS!!!!!

I'm guessing by your last few posts....

you REALLYYYYY like Bill

78kitty · Post by **78kitty** » January 31st, 2008, 9:37 pm

Thanks for the clearance spec- unfortunately the machine shop had honed to .003 and then called to ask what it should be- how is this going to affect the overall picture? What are long term affects of this and should I reassemble the engine or buy a new jug?

Any help/advise is greatly appreciated.

kidsperformance · Post by **kidsperformance** » January 31st, 2008, 10:13 pm

.003 is ok....if the motor is still in stock form(gov connected) things will be fine........for racing you would want it tighter

1121racinkitty · Post by **1121racinkitty** » January 31st, 2008, 10:45 pm

YES!!! ABSOULTY!!! DO NOT GET ME WRONG!!! BILL ROCKS!!!
THE OLSEN BROS ROCK AND THE LAAGERS ALSO ROCK!!!
IN MY EYES BILL AND THE BROTHERS STARTED THE WHOLE
ADDICTION THAT WE CALL KITTY CATS!!!

78kitty · Post by **78kitty** » February 1st, 2008, 8:21 am

I removed the governor and put a 2.0 needle in the carb. Also went to .040 piston and rings. No other mods to the motor. Just dont want to reassemble and blow it up- sounds like I need to find a nice way to tell the machine shop they overbored and now its going to cost them a new jug.

Thanks again- great to have so much knowledge available- I cant find such about my zrt 600.

kidsperformance · Post by **kidsperformance** » February 1st, 2008, 3:45 pm

do you have the slotted rod?????

78kitty · Post by **78kitty** » February 1st, 2008, 5:44 pm

Dont think I do- I actually found a local guy who used to rebuild these and he told me that the .003 would be ok as long as I am not racing. SO I am taking the chance and I reaseembled it this afternoon- it runs great once its warmed up when cold I have to give it gas or it stalls. Hauled me across the yard with no problems.
Thanks kidsperformance for your help and advice - if you have any thoughts about the stalling when cold I would be happy to hear them.

Kitty Cat Snowmobiles

Oversized Piston- spec needed

Oversized Piston- spec needed

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