4.2 exhaust, many differences?

Just got my 4.2 motor, and I was planning on sticking it on my Steel GP2. But since I talked to Ted (ruler of the SMRCC), he said that I could only run a stock 4.2 polini stamped pipe on the GP2 steel because that is the one that is produced with the bike. I don't think that this is fair concidering that the DM comes with a Bizeta looking pipe on its 4.2. Which is Fatter in all aspects!

So I am now selling the Steel GP2 Rolling chassis, wish I wasn't but have to now with this rule, on the forum! I have decided to switch one of my DM's, which is the one with the 50cc since there is no class over here, with the 4.2 motor so that I could run the Bizeta looking pipe and won't have any HP differces with the two pipes. So this will make me even with you guys that are using the DM's and the RR's in the 4.2 class which uses the Bizeta looking race pipes.

Even if you guys used a restrictor plate on your bike, I don't think it wouldn't restrict the chamber from filling up with all that exhaust. I wished that I could have used the 910 gp2 steel with the DM pipe, but Ted feel other wise.

THere is no questions about the Polini 4.2 stamped pipe against the Bizeta look alikes. Which one actually produces 4.2 HP? What are your responses?

Hold everything!!!

I have a stock 911 pipe - we can trade - if you haven't shipped your pipe yet. Ask Ted if this is ok

is that rule still in effect cuz i now have anthonys 910 GP steel and i wanna try buying a BiZeta Pipe For it.. hmm.. i see every one else with race pipes and stuff.. and mine only has the 6.6 pipe from larrys bike..i think.

Well you do in fact have to run a restrictor, so the difference between a 6.2 and a BZM pipe both being restricted down is so miniscule that you will not be able to tell. Also keep in mind that for a BZM pipe to fit an a/c head you will have to cut a chunk of the cooling fins out so it will clear.

If you are looking at buying a better quality pipe that will fit, the new DM made "Production Pipe" will fit right in with no mods, and they sell for $200. You would need to bring your bike to double check that it clears the frame rails and rear frame area.

Check it here-

http://www.pocketbikeplanet.com/atta...chmentid=14414