Carb!

[b_watts3]

Does getting a different carb help a 400ex a lot? if so what kind is the best to get?

[honda460ex]

If you have much done to the motor, then yes. For sure. If the motor is stock, I wouldn't fool with it. My personal opinion, if it's not a bigger bore, or atleast a strong built 416 it's not worth the money. But if it is, a good cheap carb to pick up is a factory 450r carb from '04 and '05. They are 42mm, and operate great! Only problems would be your choke location on it, and shaving out the inside of your air boots to get it to fit. I had an edelbrock once and hated it. It actually hurt my performance believe it or not.

[nelson440]

Originally posted by honda460ex
If you have much done to the motor, then yes. For sure. If the motor is stock, I wouldn't fool with it. My personal opinion, if it's not a bigger bore, or atleast a strong built 416 it's not worth the money. But if it is, a good cheap carb to pick up is a factory 450r carb from '04 and '05. They are 42mm, and operate great! Only problems would be your choke location on it, and shaving out the inside of your air boots to get it to fit. I had an edelbrock once and hated it. It actually hurt my performance believe it or not.
would you choose a 450r carb over a 41mm fcr carb?

[Chino886]

It depends, the 06 450R has a FCR. I would go FCR over stock 450R carb anyday.

I have heard that a FCR carb gives a stock 400EX 2 hp.....this is what I have been told.

[Rico]

The 04 carbs are like $170 retail and the 06 carbs are over $400.

Mobile dyno I believe it was showed a 3-4 HP gain with an 04 carb on his 440.

I"ll be installing an 04 on mine in the next few days and will be letting everyone know what I think.

[honda460ex]

Honestly, I would still go with the 42mm carb off the '04 and '05 450r's. I owned a 41mm FCR, and honestly, I didn't like it that well. I sold the 41mm FCR to my brotherinlaw and he put it on his kfx400. Well, since then he has now bought a 450r carb like mine. He didn't like it either. For trail riding or your just all around use, it's not a good carb. It's meant for racing and a pegged throttle. If you are not doing just striaght hard on the throttle riding all the time, then don't get an FCR. That is what they are made for. At low rpm's, around 3,000 or so, they have a hesitation that is natural because they are such a straight open cylinder shot of air thru the carb. Unless FCR has changed their carbs this year and done something with that. But if you are stuck on and want a 41mm FCR carb, I know where you can get one for a reasonable price. PM me or something. I know brand new the carb cost around $700, verses my ebay bought 450r carb for $200. I don't knwo how much he would want for it but I can find out.

[spazzy973]

[QUOTE]Originally posted by Rico
[B]The 04 carbs are like $170 retail and the 06 carbs are over $400.


where can i find an 04 carb for $170

[Rico]

Originally posted by spazzy973
[QUOTE]Originally posted by Rico
[B]The 04 carbs are like $170 retail and the 06 carbs are over $400.


where can i find an 04 carb for $170

Service honda.

Also check ebay and other ATV sites that are 450R driven. Mine arrived today and it looks like it was taken off a brand new quad. The guy said he used it for 30 minutes to break in his motor then took it off. I bought it with shipping for $80.....:devil:

[spazzy973]

if you find one pm me and let me know plzz i am looking for one

[spazzy973]

if you find one pm me and let me know plzz i am looking for one

[nelson440]

so would i be better off runnin a 450r carb over an edelbrock eichner series?

[honda460ex]

Me personally, I would say yes... There is a guy on here that disagrees with me on this one very much, but I don't care. I owned an edelbrock carb for a short while. They have a lot of nice features, but, I tweaked with mine for a while and I never could get anymore power out of it over my stock carb. The edelbrocks are a whole different set up than a keihn carb. They use like jet needles instead of circular jets. Easy to change, adjust, and work with, I'll give them that, but not my cup of tea. I still recommend the 450r carb, cheaper, and me personally, I like my 450r carb now a whole lot better. The guy I talked about disagrees with me cause he owns an edelbrock, but if he chimes in, ask him how his is setup. He might be able to give you some advise on his setup.

[Chino886]

I agree with what everyone is saying, but since I got a steal of a deal on a 39mm FCR for $80, I would have to say FCRs are better. As soon as I had the right jets I was able to fire it up and...........(you can figure out the rest)

[nelson440]

yea, i am running and edelbrock carb right now....theres a tad bit more throttle respnse over stock....but other than that i dont really notice anything. the downfall about the carb tho is it seems like are always adjusting it every 5 mins. So if i could sell this to buy a 450r carb i would so if anyone is interested....lol after i jsut get done knocking on it.

[Chino886]

I noticed more than just throttle response on the FCR, it revs to the limit on the stock box quicker and it definitely gave it some more power, 3rd gear wheelie from rolling stop gave me a little scare yesterday!

[#8red]

true true - my 39mm keihin fcr couldn't be any better -hey chino- you got that thing for $80 you lucky dog - man - hey -I'm sendin ya' that $40 today - been BUSY as heII here - but not forgotten man - hope that thing's runnin great - sound's like it!!!

[Chino886]

Originally posted by #8red
true true - my 39mm keihin fcr couldn't be any better -hey chino- you got that thing for $80 you lucky dog - man - hey -I'm sendin ya' that $40 today - been BUSY as heII here - but not forgotten man - hope that thing's runnin great - sound's like it!!!

Hey Red, the FCR are as good, if not better then what everyone says.....I did get a hell of a deal on the SOB.....I will have a pics thread in a few days of the quad!

Thanks for sending that cash, you are a true stand up guy! To tell you the truth, I forgot about it. Have you gotten that new a-arm yet? The 400 is running good, just about convinced to do a 416......

:devil: :devil: :devil: :devil: :devil: :devil:

[Rico]

Originally posted by Chino886
The 400 is running good, just about convinced to do a 416......

:devil: :devil: :devil: :devil: :devil: :devil:
\

YOu'll kick yourself in the arse for not doing it sooner.

[Chino886]

Originally posted by Rico
\

YOu'll kick yourself in the arse for not doing it sooner.

That's funny you say that, I already am cause I am running a high comp piston in there now........rebuilt it in July 2005 (no bore)!

[VegasEx'r]

Originally posted by Rico
The 04 carbs are like $170 retail and the 06 carbs are over $400.

Mobile dyno I believe it was showed a 3-4 HP gain with an 04 carb on his 440.

I"ll be installing an 04 on mine in the next few days and will be letting everyone know what I think.

I just want to make sure I'm looking at the right carb. Is the correct Honda part # 16100-hp1-672?

[TheChknhwk]

Originally posted by Rico
Service honda.

Also check ebay and other ATV sites that are 450R driven. Mine arrived today and it looks like it was taken off a brand new quad. The guy said he used it for 30 minutes to break in his motor then took it off. I bought it with shipping for $80.....:devil:

Same here. Did you buy that from Ross?

[Rico]

Originally posted by TheChknhwk
Same here. Did you buy that from Ross?

Some feller seen my wanted ad at TRX450.org and sent me an email. It's killing me to hold off on installing it. But I'm going to wait until after the race this weekend and when I get my hands on some jets.

[Chino886]

Originally posted by Rico
Some feller seen my wanted ad at TRX450.org and sent me an email. It's killing me to hold off on installing it. But I'm going to wait until after the race this weekend and when I get my hands on some jets.

what jets you need?

[TheChknhwk]

I'm trying to wrangle up a air boot, so I can get this hog on the dyno tomorrow.:D

[Rico]

Originally posted by Chino886
what jets you need?

NOt sure.....:o

Rolwrags gotta a bunch of them so I"m getting all the jets he has to tune the mofo in with. I"m thinking between a 160 and 175. It's got a big ole honkin 185 in it right now and I think that's a little big....:eek:

[Chino886]

That is what I was thinking, I was going to send you anything that small that I had since I am running a 185 in my carb and it is a flamethrower at 180 so no need to go down. Let me know if there is one that you need.

[Rico]

so your rich with the 185????

Holy Crap..:eek:

Uglymothas had a 165 in it and he's running a 450 stroker. So i've seen anywere from 165 - 185. LOL

I'll be starting with the pilot and working my way up on the jetting so the Main will be the last of the deal and probably the biggest headache...:mad:

[Buffalo400]

I have a 450r carb in my 400ex... Honestly, It's very difficult to have a good idle..... I tried evetythings all set-up screw and 45, 48, 50 pilot jet...... The idle is fine (48 pilot, 3,5 out) but if I push a little on the throttle, he became rich and puff black smoke like If i have a to big pilot jet..... But the mid and top are awsome....

So, difficult to jet in a 400.... probably the 440 will be ok.......

[Chino886]

Originally posted by Rico
so your rich with the 185????

Holy Crap..:eek:

Uglymothas had a 165 in it and he's running a 450 stroker. So i've seen anywere from 165 - 185. LOL

I'll be starting with the pilot and working my way up on the jetting so the Main will be the last of the deal and probably the biggest headache...:mad:

This is with the FCR 39mm, the 185 is right, but I was popping (lean) with the 180.

[honda460ex]

Lol, you all are going to flip at me... I'm running a 220 main jet in my 460ex stroker with a 42mm '04 450r carb.... I'm running msd ignition though too, so that makes a huge difference. Stock needle positon and stock pilot jet as well. Starts on a dime everytime, idles perfectly smooth, instant throttle with no hesitation anywhere. Lucked out I guess, all I had to do was jet it to where it wanted to be...

[nelson440]

yea, i want to try a different carb cuz i know the edelbrock aint all cracked up to wut i was told it would be.. so it sounds like eihter with the fcr or the 450r carb would be lot better than the edelbrock....

[jordan_m6]

i have seen 450r carbs go for $75 DOLLARS on ebay

[jordan_m6]

Originally posted by Chino886
what jets you need?

i have a 450r dyno jet in my stock cark right know.

so im sure if you have a jet kit for you 400 i should work for the 450 that is the main of course.