Mercury Snowmobiles Discussion Board

Scott, Thanks for the technical explanation. I know the 340 and 440 bottom end are identical because we have been forced to sacrifice the 340 motor for the 440 on a couple of occasions. Lack of parts you know. If you can help, let me know (LOL). If we could get a decent hole shot with the 340, we wo...

Just to add to my previous post. We couldn't pull more that 8900 rpm with the 340 before the mods. Now 10,000 rpm is no problem.

Our guy said if these mods don't work, then we will run over the engine with the truck (LOL).

Wayne

We race both a 340 and 440 Sno-twister in the oval circuit. We have always been successful with the mods recommended for the 440 but the 340 has alway been a dog. Last year the 340 was ported exactly as the 440 mod specs. We used the 440 pipe on the 340 and the thing kicks ass. I don't have the tech...

Looking for one or two 440rs cylinders. Must be in good shape.
Also interested in 440 Elko blue dot pistons std.

Thanks in advance for any information

Wayne
Canada

I don't know if this guy is for real. I have tried to e-mail him several times with no response.

If you post, you should at least have the courtesy to reply.

Wayne