I just tore down my son's 2000 LT 80 and the cylinder is scared where it blew the cylinder gasket. I'm looking of going back with OEM parts, but Suzuki has them listed like this:
SKU: 12100-40B00-100
PISTON SET (OS:1.0) OPT

or

SKU: 12100-40B00-050
PISTON SET (OS:0.5) OPT

Back in the old days, you could specifiy ten thousands over or twenty thousands over etc. What is OS 1:0 or OS 0:5? What do I need to tell my machinst to bore the cylinder? IS OS 1:0 twnety thousand over standard with OS 0.5 ten thousand over standard?

I think on my last post it was recommended that I torque down the cylinder and head to 105lbs; Is that correct? It seems like that is a lot of torques for such small clyinder bolts.

When it blew the cylinder gasket the head bolts were so lose that I almost could unscrew them with my fingers. Scary!

CoastGA

 

I believe the factory calls out in mm, not thousandths, so the 1.0 is 1mm over stock,and the .5 is .5mm over. You would have to convert to SAE to get that in thousandths. Get a hold of LT80 on the forums, his name is Jack, he will get you going in the right direction.

 

95wolv is correct on the sizing.
What you do is get the piston and the guy bores/hones the cyl to the piston. You cannot just tell him to go to .xxx big.

 

oh yea, 115 inch pounds on the head nuts.

 

inch pounds not foot pounds!!!!!!!!!!!!!!!!!

BIG DIFFRENCE. [img]i/expressions/face-icon-small-confused.gif[/img]

 

<div class="FTQUOTE"><begin quote>Originally posted by: coastga

i think on my last post it was recommended that I torque down the cylinder and head to 105lbs; Is that correct? It seems like that is a lot of torques for such small clyinder bolts.

CoastGA</end quote></div>

thats what I was refering to. seems he thinks foot #