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View Full Version : jetting for LRD


andrew_couch22a
02-26-2008, 09:07 PM
what is the correct jet sizes i need in my 400. it has a full sys. LRD pipe, bored .020 over
andrew_couch22a
02-27-2008, 07:52 AM
???????????
08400EX
02-27-2008, 08:37 AM
This should get you started..

Get a 42 pilot (Honda Part # 99103-420-0420)

If you do NOT have any airbox lid mods or have it removed get a 152 (Part # 99113-GHB-1520) and a 155 (part# 99113-GHB-1550) main jet.

If you have any airbox lid mods or have it removed get a 155 (Honda part# 99113-GHB-1550) and 158 (part# 99113-GHB-1580 main jet).

Try the highest main jet first, do a chop test to see if you need to change from there.
andrew_couch22a
02-27-2008, 04:49 PM
thanx