416 ?

[GoingBig]

well im in the process of putting together my 416 10;8-1 JE with hotcams stage 2 . Now do i automatically have to rejet or will it run with the stock jetting and exhaust for now. i havent decided which exhaust to put on. I need something closer to the quite side..thanks for any replies

[F-16Guy]

Jet fat for break-in. I started with a 170 main (Dyno Jet), and ended up running a 165 after break-in was complete. Remember, fuel plays an important roll in keeping the piston cool, so being a little rich when things are still very tight is important. Also, take into account your other mods. I have a few additional things done that will require me to run richer than other bikes with just the 416 kit. Start fat and work your way down. Exhaust is the never-ending battle around here, so I'm going to leave that one alone, but I like my WB.

[YZROOSTINYA]

ct came in at 94 db on the z400 shoot out, the e series was 97, plus the db had better overall power, there about 3 or 4 diff complete pipe shoot outs in the mags. check em out.

what you will notice is the e-serries dies off in the top end, but in the shootout it is a s-bend and the ct is a PRO-MEG style. I am curious because the pro meg for the 400ex is almost exactly the same as the ct for the 400ex. i need to compare the two and see how they do.

[Sparks425Ex]

Yes Start very rich then work your way down after break in is complete.

Just to be sure.

[YZROOSTINYA]

i had a 170 and I was WAY rich, I am now down to a 158

your gonna have to prob go with a 42 pilot and 4th clip down on the needle also, that is where i am at

[GoingBig]

bump

[YZROOSTINYA]

at a 155 as of yesterday and I am spot on