Recent content by mark4

Your low, pistons and rings are dead, install a piston kit, call Terra Alps and get there thermostat kit as well.

Install thermostat kit, should be one of first things Terra Alps and billit head, then add some clutch weight for added power

the rk pistons are 2mm shorter then stock, trying to raise ports up, way too much. other fix kits have taller pistons to be more reliable, some are cast reliable and some are wiseco. also poor cooling head design so you pay for what you get sometimes

carls is using 2 separate cylinders, polaris went to the mono block to get more airflow, keeping inner transfer ports closer together, so with separate cylinders you cant gain larger ports. Big bores need more airflow to gain to make lots of hp, so maybe 165-170 hp, for $4600 I dont think so.

If you call soaking wet heavy 12" fresh snow hero snow? It was raining and snowing for a few days before this day. It wasn't really easy going, escpecially on a steep climb. The Etec works great, ran all season, didn't miss a beat, more compression then the low compression stock head.

Skidoo Etec 800 Terra Alps billit head climb - YouTube Etec with billit head and clutch kit

Rail extensions $150, used 151" track $350, or longer all good, The 600 will have lots of power, you wouldn't notice a difference, you won't have to change a thing for clutching and gearing, there geared down lower tehn teh 800 already. It will float better in the deep stuff and go alot...

Terra Alps Racing builds fully ported engines for high elevation or whatever your application, if its not ported it ain't worth installing.

I guess this is what happens when you don't buy from a shop that actually rides and tests in the area you want to ride. such as the BC mtns.

poor geometery, steering and ski control is messed up.

cheaper to rebuild it with a new rebuilt crank and dual ring cast pistons. 1 yr warranty on crank.

flywheels are different, so you'd have to change that to work with the 05 components head will bolt on, just rebuild the 05 engine, get ahold of Terra Alps racing have lots of parts in stock for them, pistons , gaskets, and can weld up the cases if they need to be to save you money.

Its the shimming of the pri clutch, too much clearance too the belt, should have under .020 " Terra Alps has shim kits for these

I wouldn't say the mbrp can loses 5 hp over anyones can, thats not true, we have tested 5 different cans with 2 different M1000's one day of testing and found good results with 2 of them. and the mbrp was good. For pipe, the most power comes from the Y pipe, the pipe added very little for the...

well the only fully ported big bore I've ever seen was the Terra Alps Racing kit, hands down beats out the others. No piston issues like the others. took the 1000 mod class in the local snow drags.