I had ARC the in my 98FZ 670 replaced with an SC10-II. Now the block in the rear even with no weight on it sits all the way back (see pic) and the suspens just doesn't move at all. I'm thinking the rear holes are in the wrong position. Does anyone know the Center-to-Center of the mounting holes for this skid? Or can offer any advice?

Thanks in advanced

Chris
[attachment=32556:sc10swapblock.jpg]

i can tell you at you defently need to move the rear hole forward i just dont know how much.

Mine are 25.5 inches center to center and I did not move it either time. Are you sure this is an sc10 II? when it was out of the sled where did the arm sit?

I am thinking either the shocks are wrong or it is an sc10 III skid.

which skid was in it, just want to make sure this was not already altered.

Mine are 25.5 inches center to center and I did not move it either time. Are you sure this is an sc10 II? when it was out of the sled where did the arm sit?

I am thinking either the shocks are wrong or it is an sc10 III skid.

which skid was in it, just want to make sure this was not already altered.[/b]

It came out of a 2001 MXZ 800, and the guy who sold it to me said it was a sc10-II so I assumed it was, but I used to have the ARC suspension in the sled. I have no idea where the arm was sitting. How can I tell the difference between the II and III when its in the sled?

It came out of a 2001 MXZ 800, and the guy who sold it to me said it was a sc10-II so I assumed it was, but I used to have the ARC suspension in the sled. I have no idea where the arm was sitting. How can I tell the difference between the II and III when its in the sled?[/b]


if it is from an 01 800 it should be a SCII. A SCII will have only one link running parallel to the shock. A SCIII will have two links that straddle the shock and will cross the shock if you look at it from the side from the side.

What was the C to C measurements? I think the fIII had a smaller measurement not sure about the Z. You should also be able to adjust the torsion spring blocks to change where they are sitting.

Yeah its a II, the holes are 25.5 appart. I pulled the rear shock, and when I lifted it the rear blocks came all the way forward, and the suspension now compresses. It doesn't seem that I can get enought pre-load on the springs, when I put it back on the ground the blocks go all the way back again. The shock isn't seized but it is stiff, not sure how stiff it should be, perhaps the valving was changed?

Anyone one know what the spring code is on the shock in the front of the skid? Mine is yellow/yellow.

SC-10 and SC-10 II center-to-center distance is 24.75". It's 24" for the SC-10 III.

I've done about 6 SC-10 to SC-10 III swaps over the past couple years.

I measured 26" center to center, but the guy that put it in ensures me that if the skid lines up to the holes in a static position, with out having to compress it at all it should be fine. I personaly thought that it had to be compressed a bit to get it ot line up? I've tried everything, I removed the rear shock and springs, it moves then, with the shock out and the tensioner springs back in it hits the rear stop like the pic above, as soon as it hits that its like a rock. I replaced the tensioner springs with softer ones as well. I wanted to try everything before I moved the brackets, cause my tunnel will look like swiss cheese.

That's exactly what happens when you have the holes too far apart. Sounds like he just measured the c-c distance with the suspension out of the sled, which is just plain WRONG.

Relocate your holes, and you'll be golden.

He must have, even his buddy that builds sno-X sleds told me the holes should line up with the suspension in a static position??

So today I moved the brackets up and now she works perfect. Thanks everyone for all your help.