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Copy Mikuni carburettor
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welshbiker
Penmaenmawr North Wales
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September 6, 2020 - 12:12 pm
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Has anyone had any luck with the mikuni carbs from china, e.g the £25 jobs that you see on ebay.

I am debating fitting one to my bantam as a replacement amal is £200. don't get me wrong I love my little bantam but £200 on a bike I use very infrequently.

I live in a village with the main access road is a 70 mph duel carriageway or a very steep incline mountain road to the next village. so I just use it to potter around the village on.

thanks

 

Mark

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Digby
Leeds West Yorkshire
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September 6, 2020 - 6:13 pm
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I've fitted very cheap Chinese carbs to D7's when the Amals were worn out and had very good results,they are designed for 4 strokes but maybe by good luck they have worked straight out of the box,instant start,even tickover and pulling well throughout the Rev range with a perfect plug colour,a bit of fettling to make them fit but in my experience well worth the effort,good luck if you decide to try one

cheers Digby

'68 D14 Sport,'65 Honda CB160 Sport,'49 D1 Rigid  ).'62 Honda 50 Sports Cub.'50 D1 plunger.

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mcafee
Malton North Yorkshire
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September 7, 2020 - 5:36 am
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Morning,I have fitted a Mikuni to my B175 greenlaner and it has transformed the bike,it starts well ticks over and pulls well throughout the rev range.I have not tried a cheap chinese one but I have and Indian copy on my Enfield Bullet and that works very well ,so for £25 its got to be worth a try and must  be better than a worn out Amal.

Best of luck.   David

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matt
London
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September 10, 2020 - 8:18 pm
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Hello Mark , I'm currently going through the process of a £30 Makuni for my D7. If you have time and patience it can be a fiddle with good results. They are very well made. If you don't have time there is always Rex Caunt  or Allen's performance ltd for a proper setup. Either way its reliability in a carburettors clothing!  Happy tinkering! 

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AdrianS
Harlaston Staffs
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September 13, 2020 - 7:59 am
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Rex does Mikuni conversions but not the cheap copies.

i think the problem with the cheap ones is getting the jetting correct. Also some carbs are flanged and others need an adapter which is about 30 quid.

the other alternative is a Wassell carb which is an Amal copy and about half the price. There are mixed reviews about them but I haven’t had any problems. 

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BantamBaz
Reading Berkshire
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September 13, 2020 - 6:51 pm
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Good evening all.

I'm going along the same route, as although Rex's carb is very good I'm sure, the justification of £200 is difficult, so Chinese copy it has to be at the moment.

I see on fleebay there are sets of jets offered at a low price. Just wondered if any one had tried them with any success ?

Cheers.

Barrie.

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saab9002
Chandlers ford
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September 15, 2020 - 8:18 pm
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BantamBaz said
Good evening all.

I'm going along the same route, as although Rex's carb is very good I'm sure, the justification of £200 is difficult, so Chinese copy it has to be at the moment.

I see on fleebay there are sets of jets offered at a low price. Just wondered if any one had tried them with any success ?

Cheers.

Barrie.  

Just about to do the same, the jets and carb have turned up but you will probably

get a result before me asI had a major bowel op 7 months ago and last week

had the reversal so can’t do much for a few weeks now cry

Regards Chris

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saab9002
Chandlers ford
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October 3, 2020 - 5:48 pm
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BantamBaz said
Good evening all.

I'm going along the same route, as although Rex's carb is very good I'm sure, the justification of £200 is difficult, so Chinese copy it has to be at the moment.

I see on fleebay there are sets of jets offered at a low price. Just wondered if any one had tried them with any success ?

Cheers.

Barrie.  

Hi Barrie,

I've been checking out the carb and sets of jets I bought from fleabay, the carb seems pretty good especially for the price but be warned

the jets are not so good, the jet that came out of the carb had at least another 1.5mm of thread on it compared to the jets that came separately.

The main jet that came with the carb was marked 85 and I'd heard sometime ago that a jet of 110 worked better, if anyone knows by experience

I am happy to be corrected. If we knew what was a good starting point on main jets I would recommend buying genuine, maybe we could set up

a jet swap shop of some kindthumbs-up.

regards Chris

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Number6
Lincolnshire
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October 5, 2020 - 12:16 pm
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the jets are not so good, the jet that came out of the carb had at least another 1.5mm of thread on it compared to the jets that came separately.

Sorry, why is this a problem?

Mike H --

Murphy's 4th law of motion states that any small object that is accidentally dropped will immediately hide itself under a larger object.

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mcafee
Malton North Yorkshire
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October 5, 2020 - 12:25 pm
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Hi just for information I run the following jets etc in my B175 which I mainly use off road.

Pilot 27.5. Main 140. Needle jet 182P4. Needle 5DP3. Slide2.0

Hope this of some use.  David

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saab9002
Chandlers ford
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October 5, 2020 - 3:23 pm
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Number6 said

the jets are not so good, the jet that came out of the carb had at least another 1.5mm of thread on it compared to the jets that came separately.

Sorry, why is this a problem?  

The original jet passes through a washer and this keeps the main jet body from sliding up the carb body and 

that leaves approximately the length of thread which would be the equivalent to the thickness of a corresponding

sized nut, so reduce that by 1.5mm and that leaves 4/5s of "fery" all.cry.

The washer is approx 1.25mm thick and made of brass so a thinner washer may help.

regards Chris

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