And yet another jetting question (4mm w/ stock carbs)

[MLack]

I'll try to keep this short as possible. Looking for a ballpark jetting for my new woods build. 

 

4mm crank, 

HJR MX Hardcore Port (stock cylinder)

Noss Head w/ 23cc stroker domes

FMF Fatty Pipes

VForce4 reeds

STOCK CARBS

+4 timing

open airbox w/ K&N Filter.

1,000ft elevation

 

Thinking 340 mains and 27.5 pilots. Thoughts?

 

Anybody have any expiernce with stock carbs on a ported 4mm? 

 

 

[bluebanshee98]

I had a 4 mil dune port with shearers and k&n pods. Jetting was 340 mains 27.5 pilots and 1.5 airscrew. Your prob need a 30 pilot and try 330 main and see what the plugs are like. Better to start rich and work your way down? Call Kev he ported your cylinders he SHOULD know... Haha

[MLack]

Figured i would update this for someone searching in the future. 

 

After a few plug chops and running this through the woods i ended up at a 350 main, middle clip on the needle. 27.5 pilot and 1.5 on the screws. Shes a monster!