jetting for the 406 with pipe

[Tommy 17]

tc mx grind cam
full race porting
406 10.8:1 compression je piston
mod stock carb
K&n filter
no airbox lid

are my mods now with a 160 main and a 40 pilot...

i juts got a lrd chrome pipe so what should i start with jetting... i already have a 170 here should i try that??? should i jump to a 42 pilot???

i'm clueless on jettin 4 stroke motors...:confused:

[Ralph]

tommy, im looking ot do similar work, but a 416 to my quad, and i will be looking foward to ride ur bike at the ride, but who did ur work and how much did it all cost and what exactly did u get done?

[Tommy 17]

a local guy did my motor... it was around 800$ i think but there was some discounts here and there and stuff... i'm not sure on actual price... i go the guy a bear and i only had to pay 700$ of it and i got like 5 free valve jobs... but anyways...

the porting was 220$ i know... and the cam was 205+ stock cam... he did all the work on it...


he has built national motors for quads for a ex pro named rick meyers... he use to run the gnc series... his quads got 1 2 and 3 in the pa state drags last year also... so he knows his stuff...

his record is only having one 400 come apart on him and it wasn't his fault... the guy put the oil filter in backwards and it blew up...


i could talk to him about doin exriders motors.... i dunno if he will though... its like a 2nd job for him and hes backed up always with locals...

[Ralph]

sounds nice, but i dont have that much to spend, im just going to get the cam, pipe, piston, and then later on make it nicer

[Tommy 17]

yeah but i handed him the motor outta the frame and said go to town... i told him i wanted a bore, cam, piston, and smooth bored carb and thats what he picked out as the best combo for me...


i wanted a 416 but he built a 406 b4 mine just like mine and he knew all the jetting and stuff already... so i told him 406 it is...

if u do it urself i bet u could get it all for 500$

[Ralph]

500 sounds like what i was looking for, but i donw know how to modify a carb, but i am planning to get a

rear shock rebuild
front rezzys
416
cam
pipe

c&d gave me a total for 1450 for all this but im going to shop around some more.

I'd say bump the mofo up toa 42 pilot and a 165 main should do it..I ran the 165 main with mine and NO airbox lid...

[YZROOSTINYA]

i just went down to a 158 from a 162, iwas runninmg way rich. i have my airbox lid on but it has vents in it. i have yet to ride it to see if its right, i think this should do it, i dont have any porting though

[Tommy 17]

i got a 165 and 170 here... i'll try the 165 1st... thanks rico and yz

[Taco]

just to clear things up do you have the keihln jets or the dynojet jets?