Is there any diffrence between the 600 ves small block engines. I am getting a 2001, are the newer engines better? any HP differences? Tell me all you know. thanks

The exhaust valves on the 01's have 6, 10mm bolts .The two that hold it to the motor are under the bellows housing , & on I think 02 & up they rotated the bellows housing 90* and eliminated two bolts in doing so . My son's 04 600 looks the same (except for the rotated bellows) & puts out the same HP as my 01 (117hp)

Thanks for the info

Ignition changes in 02(brand change), grafal coated pistons in 02 and water pump/oil ratio changes to increase coolant flow in 04. I believe no power difference, but i would stay away from the older motors as they had some bad cylinders that strip out on top the cylinders for the head bolts(no overtightning-unless done at the factory), seen it on a 00 ves 600 and 02 ves 600, 00 ves 500, musta been bad batches in alum.

"00 and "01 motors were identical with the exception of small changes in ignition and carb calibration. The "02 uses a lighter flywheel and different ignition. The "03 changed to a 18 degree timing offset to improve warm starting. The "03's also had coated pistons and different carb calibration and cdi. "04 motors use a different crank which incorporated a 909 water pump gear for accelerated coolant flow. Its recoil starter is also slightly different to accomodate PERC. The VES arangement was already covered. Subtle casting changes to the cases and cylinders are ongoing to enhance strength.

you might want to check that figure ??

no lie. 115 on a cold pipe, 117 on a hot pipe.
according to snowtech magizine back in '01.

Dynotech also got the same hp results, when jetted properly. Right around 115ish hp. 115 reliable hp out of a little baby 600, LOL. With just a plane jane carb.

A well broken in 600 will see 115-117hp.

When Rich Daley from Dynoport, does the dyno runs for the sleds at the Amsnow shootout each year, he did show about a 4hp drop from '02-'03&'04, which from the 115-117 figure down to 111-113, _BUT remember, these are freshly uncrated sleds with no miles. The '02's were deffinatly hotter, temperature wise,too. That why they backed off on the timing some as well.

The 01's have been dynoed in the past at 115-116hp & we just dynoed my son's 04 prox2 @ 115.5hp at Dynotech Reasearch a few weeks ago, also I have both sleds :div20: