Picking up a '96 Formula S (compression) - Snowmobile Forum: Your #1 Snowmobile Forum

Funky · 12-23-2005, 09:16 PM

So yeah, I'm heading tomorrow to buy a used 1996 Formula S (380 fan), and I want to thouroughly check it out buying leaving with it, and I will be checking the compression on it. So what should the compression be?

Also, anything else I should check, and/or general comments on that sled?

TIA!

letitsnow · 12-23-2005, 09:55 PM

above 110, 120 would be great.

BRPforlife · 12-24-2005, 10:04 AM

Also make sure both cylinders are pretty close to each other compression wise.

Formula_Canuk · 12-24-2005, 11:08 AM

Yeah they usually say all cylinders should be within 10%. Compression is usually a great bargaining tool, especially if one cylinder is low, but not to low (like 108). The old "Oh oh, it needs rings" usually helps ya draw em down a bit.

Funky · 12-24-2005, 11:09 AM

Thnaks a lot for the info! Heading out right now to pick it up.

Formula_Canuk · 12-24-2005, 11:26 AM

BTW the numbers will be lower if you don't let it reach operating temp! Tell us how it goes

Funky · 12-26-2005, 10:43 PM

Ok, well, I just came back from my holiday traveling (during which the sled was picked up).

Compression was 123 and 125. Generally, the sled was VERY clean, only has 4000 miles on it. For 1400$ CAD, I think it's a pretty damn good deal. Can't wait to go on a ride tomorrow!