Hey guys just did my first mod's on the Raptor this weekend. I've got quite a few questions. Being that I have built and raced many cars and snowmobiles in the past I decided to tear into the raptor to install the new pipes/jetting/pro-design/K&N filter. I am used to loosening the carb boots and rotating the carb enough to get at the bowl screws and then swapping out the jets. Not that easy on the Raptor atleast I didn't see how that would be possible. So I had to remove the airbox and eventually the boots from the head to get at the carbs.

I was also wondering about the jetting. I am running 155/160 w/25 pilots for my new DMC pipes w/no other mod's except the Pro-Design/K&N. I am currently running with an unmodified airbox.

Finally what spark plugs is everyone running, heat range, etc.

Thanks!
Brent

Get a jet kit. There is no way the stock needles will work with a pipe and air box mods. People try but fail.

pls see my reply under your "new record" thread.

Hey 720,
what do recommend for an e-series with airbox lid removed?? 146/148 dynojets or 148/150?? thanks

scott

148/150 w/dynojet needles and diaphram springs to start. I don't have too much experience with the e-series though. This should work fine in Glamis.