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View Full Version : 450r carb on a 400ex



jocolo
10-09-2005, 09:33 PM
Ok guys I got an 99 400ex with stage 1 cam, uni filter, 11:1 standar bore piston and full HMF exhaust, does anybody knows what jetting do I need?
I live in Orlando so pretty much 85 degrees and sea level
Thanks in advance

Dont want to go with a big bore

10-09-2005, 09:44 PM
try a 42 pilot, 170 main. air skrew 2 turns out.

jocolo
10-11-2005, 08:55 AM
Thanks
Jorge

44oEX
10-11-2005, 09:09 AM
ehhhh for a 450R carb you'll need bigger then 42 for a pilot start with the stock and go up if you need to...and maybe a little higher on the main too

10-11-2005, 10:45 AM
I dono, I have no experence with a 450r carb, thoes are the settings that I was using on my modded stock carb with modded engine.+

ommkevin
10-11-2005, 02:36 PM
id think you would need to bore it out to use a 450r carb

RiderTRX400ex
10-11-2005, 06:07 PM
do a search there are many threads on here about the same topic.

44oEX
10-11-2005, 09:03 PM
Originally posted by ommkevin
id think you would need to bore it out to use a 450r carb

no works great on a stocker to

Zuber187
10-13-2005, 05:33 PM
Jocolo, Hey Man Where do you live in Orlando and how is the riding over there? I live in Titusville and besides 5A and Ocala there not much over here unless you like running from the PO. I was planning on trying the 450r carb on my 04 EX Ross 10.8-1, HRC cam. Let me know how it turns out. I have heard it gives pretty good gains.

jocolo
10-13-2005, 09:16 PM
I live in hunter's creek Orlando just about 5 mins from the sea world riding area, never been to ocala tou, once i get the carb i will let you know, the riding in international drive (sea world) is mostly sand with woops everywhere lots of people on the weekends usually, unfortunatly with hte airline schedule i will not have a weekend off this month but may squeeze some riding this saturday, if you come down look for a montero with a yz426 #21 and a 400ex with hotwheels graphics
Jorge