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Author Topic: What carb is this?  (Read 866 times)

Offline Dutch_Rutter

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What carb is this?
« on: March 15, 2015, 10:56:30 pm »
Its a Mikuni, but a much larger size then any stock 250r carb that I have seen.

A buddy pulled it off of his bike and replaced it with a stock one because this was causing his bike to run lean. Is this thing worth keeping? and could I use it on my bike with it not running lean?

I have not measured it just yet but I will tomorrow.

Sorry about the junky pictures.
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

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Offline Dutch_Rutter

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Re: What carb is this?
« Reply #1 on: March 15, 2015, 10:58:14 pm »
Other sides

Thanks
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline Heminutt

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Re: What carb is this?
« Reply #2 on: March 15, 2015, 11:59:40 pm »
Looks like a stock 500 carb
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89 zilla Bartlett racing Dune Porting,42.5mm rx'd carb,DrQ pipe, vf3 reeds
 89 lt250r custom frame with Bartlett racin Dune Porting, DR Q pipe, zilla carb, vf3 reeds
 00 426ex 12:5 comp, stage2 cam, full yosh exauast, +2+1 a arms, +2 lons

Offline Dutch_Rutter

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Re: What carb is this?
« Reply #3 on: March 16, 2015, 12:23:51 am »
Thanks,

That would definitely explain why his bike was running lean.

Is it even feasible to run this on a 250 motor? Or would it be overkill.
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline Heminutt

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Re: What carb is this?
« Reply #4 on: March 16, 2015, 06:57:13 am »
you can run it just have to jet for it
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89 zilla Bartlett racing Dune Porting,42.5mm rx'd carb,DrQ pipe, vf3 reeds
 89 lt250r custom frame with Bartlett racin Dune Porting, DR Q pipe, zilla carb, vf3 reeds
 00 426ex 12:5 comp, stage2 cam, full yosh exauast, +2+1 a arms, +2 lons

Offline Glamisrider

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Re: What carb is this?
« Reply #5 on: March 16, 2015, 07:53:11 am »
X2, looks like a stock 500 carb which is 38mm

Just jet it correctly and with a good air filter, pipe & reeds it should make your 250 run pretty good.

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Offline Dutch_Rutter

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Re: What carb is this?
« Reply #6 on: March 16, 2015, 10:23:24 am »
Well, guess I gotta talk to him about price and I'll be taking it off his hands.

How can I get this to fit into my reed boot? I have the Vforce reed cage should I cut out my stock boot or can you buy larger reed boots?
 
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline RustBelt

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Re: What carb is this?
« Reply #7 on: March 28, 2015, 08:10:14 am »
soak the intake boot in hot water. When its thouroughly heated,
stretch it over the carb. It's not easy but enough of us have done this.
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Offline Dutch_Rutter

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Re: What carb is this?
« Reply #8 on: March 28, 2015, 11:56:10 am »
Great, got it one and it seals fantastic. thank you.
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline 92lt250wannabe

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Re: What carb is this?
« Reply #9 on: June 08, 2015, 09:03:42 pm »
Was your throttle cable long enough to work with the 38mm carb? I have ordered evwryrhing in to run the 38 carb, 500 intake boot, carb, 500 airbox outlet pipe, 250r filter. Also what about your fuel petcock, was the 250 big enough fuel line? Pics I have seen looks like the 500 has larger line.
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Offline Dutch_Rutter

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Re: What carb is this?
« Reply #10 on: June 09, 2015, 05:20:25 pm »
I actually had a custom cable made from motion pro to fit  the Honda throttle so I knocked it out with one go. pulls full open and slides nice and smooth. One thing I have always hated was gritty throttle cables.
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline 92lt250wannabe

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Re: What carb is this?
« Reply #11 on: June 09, 2015, 06:26:41 pm »
Oh ok your running a 250r throttle? I have a motion pro twist throttle, I will see how mine fits. I think it should be long enough, i have slack around the steering stem, shouldn't need too much extra cable for the bigger carb.
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Offline Dutch_Rutter

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Re: What carb is this?
« Reply #12 on: June 09, 2015, 07:42:34 pm »
nope, sorry I should of specified. Its a moose billet throttle for a 400ex. I don't believe that you need much people say that the stock can reach by shaving some threads off the cable adjusters but I feel this is a better way to go about it.
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline Skeans1

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Re: What carb is this?
« Reply #13 on: June 10, 2015, 05:38:53 am »
All Honda throttles use the same sized adjuster so no reason you could use the 250r on with cam in it which can open a 50mm carb with a little modifying.
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Offline Dutch_Rutter

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Re: What carb is this?
« Reply #14 on: June 10, 2015, 10:47:17 pm »
There is it ^ thanks skeans.
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04 CRF 450R----> My Beast
03 LTZ 400------> Wife's Boy Friend
90 LT 250R------> Done and Ripping
01 CR 125-------> Traded For the LT

Offline Skeans1

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Re: What carb is this?
« Reply #15 on: June 11, 2015, 06:29:59 pm »
Cheap and easy thing to do if you do run say a 450 or 400 housing is to put in the 90 lever it has a little better angle, and with a little to no grinding inside should open a tm38
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Offline 92lt250wannabe

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Re: What carb is this?
« Reply #16 on: June 13, 2015, 09:06:55 pm »
Yeah my motion pro twist throttle cable is too short, barely. I set the slide height at 2.5mm and when I put the cable on it lifted the slide about 2mm more, also like skeans1 said its not smooth. You can feel the spring is "crunchy" in there. I honestly didn't really look to much into it but I'm pretty positive everything went together properly. I'm going to call motion pro and have them make me a cable also.
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