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reconmaster
07-17-2005, 11:30 AM
I have heard some ppl put 400 carbs on their 300exs how do thhey work, how 2 modify the adapter piece, and any jettingg required for the carb if you have a pipe and filter and plan 2 get a header (i haven't got a carb yet)
this winter i plan adding a few things such as a lsr or rpm axle, a header, another set of tires and maybe a set of used factory honda wheels cause its cheaper then buyin after market 1s plus unless theey are hipers or beadlock they don't last i find cause my itps are getting bad
and j/w what else should i do i'll probly be on a budget i plan 2 keep my motor interaly stock at the moment since i ride everyday non stop in just about any condition unless its thunder and lightning out hail or snowing since i have a sled

heres a few pics of my ex enjoy
http://pic.piczo.com/img/i76885213_46687.jpg
http://pic.piczo.com/img/i76891356_42634.jpg

07-17-2005, 11:50 AM
sorry i dont know the answer to your question, but are those 300 shocks on 400 a-arms, it doesnt look like you got a relocator, btw, before you get the carb off a 400 i would recomend getting an airboot from a 350x;)

red rider88
07-17-2005, 12:30 PM
i use to have a 400 electron carb on my 250x and it ripped holehot machine but it wouldnt idle and it was hard to start when u stalled it. took it off after it cost me some races.

hardkoratvmxr
07-17-2005, 01:14 PM
no he has 400 shocks on 300 a-arms and cut and rewelded mounts for them so now he can use 400 shocks any time

reconmaster
07-17-2005, 01:20 PM
Originally posted by red rider88
i use to have a 400 electron carb on my 250x and it ripped holehot machine but it wouldnt idle and it was hard to start when u stalled it. took it off after it cost me some races.
well seein how 250xs have a kickstart and no hot start lever makes it hard 2 start when they get hot and did you set set ur air fuel mixture and idle screw properly

red rider88
07-17-2005, 01:28 PM
yep tried everyhting

reconmaster
07-17-2005, 01:31 PM
thats weird maybe just bad luck thats all

red rider88
07-17-2005, 01:40 PM
i talked to the kid at high point who ran my quad last year and he said they couldnt get it to idle either

reconmaster
07-17-2005, 01:43 PM
ic just some1 was tellin they did it to his buddys 300 since he got 450 carb 4 his 500ex and it worked amazing never mentione idling problems o well
like i was thinkin about gettin a anitfade posi locknut but i'll stick 2 thread locker and a lil duct tape or no duct tape i'm gonna get a custom graphics kit so i don't scratch, mark up my fenders anymore plus keep them from fading i wash my ex 1ce or twice a week

07-17-2005, 02:06 PM
make sure the carb you get isnt too big, then you will actualy loose power from not haveing a fast enough air velocity ;)

300ex_ryda
07-17-2005, 07:24 PM
i have my new winter project lined up and ready!

05 Honda TRX 450R .....man is she gonna be pimp by next season!

she will be mx/gncc ready!

tommyboy8
01-24-2006, 08:10 AM
i did this and it ran like **** and first but my buddy dad adjusted the fuel air ratio and it ran like a champion i couldn't ask any better... some thing i did... the 300ex intake boot is to small so ull need to get a 400ex intake boot and you will need to adjust your carb... the rear end of the 400 intake is a little small for the air but with a little muscle you can get in on the i suggest competely unscrewing the clamp and simple as that you got it probably the cheapest best mod for a 300ex... im now running a 350x motor

tommyboy 8

drifterx
01-24-2006, 04:14 PM
Thats actually some nice info on a sweet mod, but try not to bring back up a 6 month old thread... ;)

gonenbroke
01-24-2006, 05:54 PM
tommyboy post up some pics man

reconmaster
01-24-2006, 07:05 PM
sorry to say but this threads old look on my project 300ex thread to see what i have done i decided not to0 get the carb because i couldn't afford to

chapmanmd
01-25-2006, 08:35 AM
i ran a 400ex carb on my 330 with big valves, header, 11.5:1 piston, etc. It ran great. 162 main jet.

tommyboy8
01-26-2006, 01:36 PM
i can take some pix of my 350x here soon and put them up just let me know who to send them to ...


tommyboy8