Weird???

[x18nfs]

today i was going fast down a strait away 2 times, In the higher gears it was boggin alittle..... and after it was riding for a while like 45mins my motor felt like a two stroke and road like crap without power and then after like 5min it was fine....What could it be...i have a 30mm mikuni carb and 140cc OGM, my spark plug is black....:confused:

Could it be i have to change jettings? Is there a Air/Fuil screw i could ajust? Could it be motor problems?:confused:

[The Nutty Professor]

today i was going fast down a strait away 2 times, In the higher gears it was boggin alittle..... and after it was riding for a while like 45mins my motor felt like a two stroke and road like crap without power and then after like 5min it was fine....What could it be...i have a 30mm mikuni carb and 140cc OGM, my spark plug is black....:confused:

Could it be i have to change jettings? Is there a Air/Fuil screw i could ajust? Could it be motor problems?:confused:

When you say after 5 minutes does that mean after you shut it off for 5 minutes or what?

[x18nfs]

naa i sat and reved alittle

[The Nutty Professor]

Do you have a oil cooler? You do don't you thinking_smilie The reason I asked about losing power then getting it back is because it sounds like the motor was heating up then when it cooled enough it return to is best operating temp and all was right with the world. Put up some photo's of your motor layout without the bodywork. That might show us a few things we can see that you might need to change dunno but

needpics

God I love that smiley LOLOLOL Oh and take the photo's outside with a lot of light and take them until they're clear no fuzz lolol I personally think your problem is a small one and will be easy to fix we just have to adjust something the right way.

[jsosh93]

Thats weird. Got to be something with the carb. I was using a VM copy carb and it ran really shitty. Now i'm running the mikuni it came with and its running like a champ. Great throttal responce, no bogging, etc. I would run the carb it came with as mines running great with it, yours should too!

[x18nfs]

well i don't know, the stock carb with the motor was sold....I still have to figher out if there is a air/fuel bolt?

[x18nfs]

here some pictures....sorry couldn't take outside but it was night already, ill take new ones if you want

[x18nfs]

Heres some more.....when i just checked plug....the top wasent black any more?

[rkfinch23]

That carb is NOT even close to 30mm

[X7rocks]

told you to buy my vm22 carb before doug touched it to run with my motor...

[x18nfs]

That carb is NOT even close to 30mm

why do you think that?

[rkfinch23]

BECAUSE I CAN TELL..... i'd say it's closer to a 22-24, but no bigger. did you get it from holeshotz? it might be 30mm where the airfliter mounts

[x18nfs]

is this the air/fuil screw by any chance

[X7rocks]

no its under the carb

[Blitz$M.Inc.$]

it depends on what carb you have x7, the taperbore 26 is on the bottom, the vm26 is on the side
ive never seen that carb with that screw circled, it does look too small to be a 30mm, my vm26 is a big bastard, and that filter you got on there would not fit on it, i have the same one and it barely goes on the taperbore
the plug looks great to me

[X7rocks]

that thing is a tapor bore from the looks of it
the same thing that came stock on my GPX 125 actualy

[The Nutty Professor]

Looks like a standard 19mm carb to me. It looks exactly like the carb, down to the same filter, that came on my X22.

[jsosh93]

ya dude th carb is definitly junk, does it say mikuni anywhere on it????

[x18nfs]

Yea its a real mikuni....sayes Mikuni on the top part and Japan on the side.

It was actully alot bigger combared to the 26mm mikuni tapor bore my 140cc ogm came with....

I ordered a VM26 for Jay in december and he sayed he was going to ungrade my order to a 30mm.....http://holeshotzperformance.com/product-info.php?pid110.html

[jsosh93]

130$ for a carb kit. I would have just stuck with stock. How could you not even run the bike yet with a stock carb before you get a new carb..... I think the carb is your problem. My other carb was my problem.

[rkfinch23]

that carb isn't even a 26mm. taper bore carbs are a joke, how big is the inside measurement at the slide? NOT where the airfilter goes:) not to mention YOU SHOULD NOT BE RUNNING A BIGGER CARB THEN YOUR INTAKE VALVE.

[x18nfs]

http://www.mxsouth.com/pitbikes/twobrothers/two-brothers-complete-carburators-mikuni-vm26-carb-kit-crf-150.htm

http://www.faster-minis.com/carb-kit-mikuni-vm26.html

http://www.xmrpros.com/store/product-info.php?pid66.html

http://www.xmrpros.com/store/product-info.php?pid218.html

http://www.xmrpros.com/store/product-info.php?pid92.html


I think i got ripped of and got a cheap mikuni...or fake on i was looking at these and there is a huge size differance look at all of the adjustment screws and stuff.........Ill ask Jay if i can trade my carb in for a real one like i ordered a vm 26.......i think i got a 19mm or something small...Lets see what he sayes..thumb_down

[jsosh93]

I had the mikuni tapor bore and the bike ran shitty with it. I'm just running a regurlar mikuni, i think its a 24mm not sure but it runs perfect.

[mishka]

ya dude that is not a 30mm. you should have just gotten the vm26 carb and you would have been set!

[x18nfs]

if jay sayes i can trade in my 30mm mikuni what carb should i get????

[mishka]

you should get a vm26 man...i mean you payed $130 for that "30mm carb" and a vm is bout 160? i believe

[The Nutty Professor]

YOU PAID WHAT FOR THAT CARB!!!!!!!!! Sorry for the shouting but DAMN!

[mishka]

^^ lol thats want i said! $130 for what looks to be a $30 eGay carb.

[The Nutty Professor]

^^ lol thats want i said! $130 for what looks to be a $30 eGay carb.

WHAT HE SAID! Sorry need to turn up my hearing aid LOLOLOL thumbsup2

[Holeshotz Performance]

Just to clear things up, this carb is NOT the 26mm taper bore. It is a new carb that we got in a few months back, I tested it on my own bike and it performed as good as the VM and at a fraction of the price. It is 30mm at the mouth and 26mm at the slide.

$115 is not at all a bad price for this carb, a TB manifold kit and a filter considering the cost of the manifold kit alone is about 40 bucks.

If the carb is the root of the problem all you need to do is re jet and it should take care if it for you.

[The Nutty Professor]

Hole nobody is smacking your prices. You charge what you charge and if someone wants to pay it then more power to them. I/we just believe in searching and looking for the best deal and getting what you need and what will work. Not what you wish will work. I have to say this guys so take it like I mean it. I not smacking anyone. Buying a part for bragging rights is the first step toward failure. If you have a 26mm (Or whatever) intake and you buy a 32mm carb the thing is going to run like CRAP! And trying to play with the jetting to bring it around is like chasing your tail.

[x18nfs]

ok so what jettings should i start with or should i try to move the clip?

whitch way should i move needle or shich jettings should i get?

heres my plug running with the completly hollow pipe, it was all black on top now its a silver metal color??? What should i do?

[rkfinch23]

i wouldn't run that carb on a lawn mower, get a flat, or D slide.

[rkfinch23]

you are detanating and are runing way lean...

[Holeshotz Performance]

I said what I did because it seemed like everyone was under the impression that i sent him a 26mm taper bore and I just wanted to clear things up. NO carb will come perfectly pre-jetted and ready to bolt on and go out of the box, you can always be expected to make adjustments.

[x18nfs]

How hard is it to jet the carb?

[Blitz$M.Inc.$]

i think you should take the carb off the bike and pull a tape on it - settle the size dispute at least
if it is what its claimed to be, then jet that thing rich, i had to put my needle jet clip at the bottom for my main jet to flow good

[Kurlon]

Please advertise the full carb model rather than the inlet dimensions, that way people can properly compare to other builds/sites/etc.

[Holeshotz Performance]

i think you should take the carb off the bike and pull a tape on it - settle the size dispute at least
if it is what its claimed to be, then jet that thing rich, i had to put my needle jet clip at the bottom for my main jet to flow good

This is what I advised him to do as a good starting point to find out how drastic of a change needs to be made jetting wise.

When I get a minute, Ill grab one and measure it up with my caliper and post some pictures.

[ninja x1]

if you mess up the jeting on the carb it can go from bad to worse! so carful with it, of you need help on it send me a pm!!thumbsup2

[Kurlon]

Note, you can't directly 'measure' the size on most carbs. The advertised 'size' is based on air flow through a circle of a given diameter at the slide. Most of these carbs are oval bores, so they achieve the same flow with a different width slide. This is why carbs need to be advertised by their model designation and / or mfg part number, not by the size of the air filter bell or some other mostly irrelevant measurement.

When in doubt, look the carb up at Sudco or ask the mfg directly. You'll find there are lots of authentic looking 'Mikuni' carbs that have all the right stampings, yet there is no matching Mikuni part number for them...

[x18nfs]

Jay, can i just trade in carb for a really VM26 carb that i ordered.....every one I PM'd sayed at most its a 26mm........would be happy! I wouldnt have to bother you or anyone else about the tuning problems or deturmining if its real or really a 30mm carb. People say that the real Vm26 is allot easyer to tune with the easy access air/fuil screw and all the adjustments. Also i have no idea were to find jettings for it, you said you dont even have for that size? The VM26 carb is very common and jettings cand be found every were along with replacement parts.....the point is i ordered a VM26 and you said you were sending me a 30mm "upgrade" and its not really a upgrade more of a down grade! So can i please get a trade in?thumbsup2

[Holeshotz Performance]

Jay, can i just trade in carb for a really VM26 carb that i ordered.....every one I PM'd sayed at most its a 26mm........would be happy! I wouldnt have to bother you or anyone else about the tuning problems or deturmining if its real or really a 30mm carb. People say that the real Vm26 is allot easyer to tune with the easy access air/fuil screw and all the adjustments. Also i have no idea were to find jettings for it, you said you dont even have for that size? The VM26 carb is very common and jettings cand be found every were along with replacement parts.....the point is i ordered a VM26 and you said you were sending me a 30mm "upgrade" and its not really a upgrade more of a down grade! So can i please get a trade in?thumbsup2

I would like to point out that any carb you get will need to be jetted and you will not be able to just bolt on and go. We have jets for all of the carbs we carry in stock, just not as a "kit". Once you determine what jets you need you can simply bring your old jet to a local motorcycle shop and tell them you need the same style jet in whatever size you need and they will get it for you at a cost of about $3 per jet or if not we can supply you with them as well and just want to point out that this is something you need to deal with no matter what carb you go with.

I also do remember you specifying that you wanted the 30mm carb package rather then the VM26 because I added it to the website shortly after you placed your order.

I don't mean to sound like a **** or anything as I try to help people as much as possible but I just cant see exchanging a carb thats 4 months old and used because you found out that it needs to be tuned and its something you don't want to deal with and also considering the fact that you were more then happy with the performance the carb was giving you up until your bike started acting up a few days ago.

Considering that the 30mm carb will not be resealable if returned due to the fact that its 4 months used, you will need to meet me half way on this if you would like to exchange it. If you send back the carb along with $45(40% of the retail value) I will cover the other 60% of the cost and exchange the carb for a VM26. Sound fair?

[x18nfs]

Thats not what i remember, I recall you telling me you sent a 30mm carb upgrade instead of the VM26 i ordered...saying that you got like a really good price on them buying in wholesale of 100 or so. And that the 30mm is better and slightly bigger than the VM26. After posting pictures on differant sites and people telling me that at the most its a 26mm or less. And there is no air/fuel screw, it seems that i got a "down grade" and got ripped.

The carb ran good when i took it out one day in 1st and mid second gear..yes. But after taking it out on a strait away in higher gears it ran like crap bogging down and so. If there was atleast a screw i could turn (air/fuel) that i could acess on the carb it might be easy to tune. But you cant tell me were the air/fuil is... And the the VM26 has the air/fuel is on the side...if im correct? And if you compare the pictures you will see the size differance of the two carbs.

[Holeshotz Performance]

Thats not what i remember, I recall you telling me you sent a 30mm carb upgrade instead of the VM26 i ordered...saying that you got like a really good price on them buying in wholesale of 100 or so. And that the 30mm is better and slightly bigger than the VM26. After posting pictures on differant sites and people telling me that at the most its a 26mm or less. And there is no air/fuel screw, it seems that i got a "down grade" and got ripped.

The carb ran good when i took it out one day in 1st and mid second gear..yes. But after taking it out on a strait away in higher gears it ran like crap bogging down and so. If there was atleast a screw i could turn (air/fuel) that i could acess on the carb it might be easy to tune. But you cant tell me were the air/fuil is... And the the VM26 has the air/fuel is on the side...if im correct? And if you compare the pictures you will see the size differance of the two carbs.

The air/fuel screw is on the bottom of the carb however that will not solve your problem. Like I told you before, try putting the clip on the needle jet in the bottom notch, that should solve your problem.

[The Nutty Professor]

Good Good no mud slinging. Let's keep it that way cowboyIf the carb works down low it seems like a adjustment is needed to work higher up. There are so many adjustment that might need tweaking you might want to have a shop do it. Just my opinion. Fuel/air, main jet, pilot jet, float height, and I know I left something out dunno

[Blitz$M.Inc.$]

the needle jet nutty, its about half the useable range
i think i need a one size skinnier needle
for real: i think a carb thats bigger than your intake valve is over kill, maybe kurlon can speak on this
to that effect, if i ran a 28mm carb its only gonna be slightly better than my 26 just because my intake valve is 27mm
and a 30mm would be way too much

[x18nfs]

making me more want the VM26, i heard its a great carb......thats why i ordered it!!! And i dont think its fair to pay 40+ dollars more just to get the carb i ordered.

[The Nutty Professor]

X18 hate to say it but 4 months is a long time. Try wearing a pair of tennis shoes for 4 months then trying to take them back when you find out they hurt your feet when you run. Saying you didn't run for 4 months then when you finally did the problem came up dunno Kind of like the same thing thinking_smilie

[x18nfs]

yea it has been almost 4 months, but only road about 30min....at the most.

[Blitz$M.Inc.$]

you only rode your bike for 30 min in 4 months!!!!
ok thats in some sort of midbike non-use violation or something
please send your bike to the next worthy kidmoon1

[x18nfs]

hahaha...yea but I bought in late december and it was very snowy and cold. But i hope to ride alot this spring/summer if we can solve this carb problem. Most winter i was modding!!thumbsup2

[x18nfs]

Toaday i mover clip all around on every space and its still running like crap bogging and going slow in higher gears......any suggestions??

[ninja x1]

its your carb!!!

[jsosh93]

carb seems to be junk dude.......

[The Nutty Professor]

You need jets too. Just got two jets out of take-off carbs. Ones a 78 and the others a 89. I have others but they're bigger and a few, after really looking at them, are ready for the jet heap in the sky. I believe they came out of Mikuni's because that's most carbs coming in Keihin is mostly on Honda and they last damn near forever.

[x18nfs]

thats gunna be a pain to do jetting right?

[jsosh93]

well sorta. U gotta take the fairings off. Then take the carb out... then take apart the carb and figure out which jet needs to be changed and what size it needs. Not extremly hard just sorta annoying.... Then your going to need to do some tuning aswell.

[The Nutty Professor]

Go back and read my edit /\ No undo 4 screws and take the carb apart. Then screw the jet out and screw the other jet in.

[x18nfs]

how do i know if i need smaller or larger jetts.....alos do you think $40 is worth getting the carb tuned and jetted on the same motor in Connecticut?

[Niusiic[latvia]]

This is a problem for the all little bikes

[x18nfs]

what is? And were is latvia????

[Niusiic[latvia]]

carburator is the problem! I was mini cross bike! carburator broken every day! latvia is near igaunia! look in the map!

[x18nfs]

damb oo well.... how do i know if i need smaller or larger jetts.....alos do you think $40 is worth getting the carb tuned and jetted on the same motor in Connecticut??? Also do you think if i get another carb ill have the same problem???

[The Nutty Professor]

yeah it's worth $40 to havae it tuned. They have all the experience and tools. More than likely you will havae some kind of problem with any new carb you order.

[Holeshotz Performance]

I would have liked to do it for free for you man but like I said, the tuning process will take about a hour considering it needs to be installed on to our 140 bike plus the cost of jets and all.

[x18nfs]

So what is the best deal youy can give me? Also i shipped the pipe out yester day.