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ride300exred
07-07-2002, 05:53 PM
hey guys , Just got done removin the choke and dremel'd the little metal peices out I will be sealing the holes soon ,
Heres a pic of my work . I might be takin some carbs in to do this if anyone wants it done maybe like $30 a carb I did it on my friends and boy did it wake it up .
Sorry for the bad quality pic
QuadTRX400ex
07-07-2002, 08:20 PM
What is the point of removing the choke? How does it help?

Thanks
ride300exred
07-07-2002, 08:24 PM
It is just a nuissance you get better air/gas flow without it .
More air/gas = more power.:D
would you like the mod done ?
QuadTRX400ex
07-07-2002, 08:45 PM
yeah i would like to, but ill probably do it myself so i dont have to spend anymore money. it cant be that hard!
ride300exred
07-07-2002, 08:47 PM
Just be careful dremeling
QuadTRX400ex
07-07-2002, 08:50 PM
do u just take off the yellow piece then dremel the inside smooth?
07-07-2002, 08:55 PM
Will it work on the 400ex carburator? And what else can you do to a stock carb? I heard that a modified carburator will perform as well as the aftermarket carbs, especially if you bore it out. Does anyone know who does this kind of work on carbs?
Punk13rym
07-07-2002, 09:05 PM
Originally posted by all400ex
Will it work on the 400ex carburator? And what else can you do to a stock carb? I heard that a modified carburator will perform as well as the aftermarket carbs, especially if you bore it out. Does anyone know who does this kind of work on carbs?


NACS bores out carbs for i think $50. it's on there website under engine www.nacsracing.com
ride300exred
07-08-2002, 02:19 PM
I remove the chock and take out the notches behind the choke , what nacs does is different they bore the carb I remove choke and the notches.
together they probraly make the best gain
Kris .
USAF400EX
07-08-2002, 08:29 PM
Remember to plug the hole back up after you remove the choke lever. I used some silicone gasket sealant. Just my 2 cts.
07-08-2002, 09:50 PM
how much of a gain is this mod worth?
is it even enuf to mess with?
Live2Ride300
07-09-2002, 10:35 AM
Check out this thread, it should answer alot of ur questions...All Choked Up Thread (http://209.120.142.52/showthread.php?s=&threadid=9144)
07-09-2002, 12:35 PM
I already removed my choke but I was curious about the fins. do they really hurt anything and is there any gains in power from removing them? I cant see that they could cause that much of flow restriction to hurt anything.
440exnacsracer
07-09-2002, 08:00 PM
i just took out everything, then took off the little yellow piece and plugged the hole with that. quicker, easier, and it works
roostin_dale
07-09-2002, 11:22 PM
yea...how much will it help???? It will only add like 1hp if any! I dont really think it will work! will it?
Tommy 17
07-10-2002, 09:13 AM
pro-action does nice carb mods... i had my 80 carb smooth bored by them....

my 400ex is done by rob grumbling... he smooth bored it for me...


thye look like a tornado or a twist when u look into them...
ride300exred
07-10-2002, 01:46 PM
a horsepower maybe yah but you guys buy pipes and doesnt give much more than 2-3hp
And you will get better throttle response.
Kris