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Mikuni carbs on BMC motors
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Author:  drmini in aust [ Tue Oct 29, 2013 7:37 am ]
Post subject:  Mikuni carbs on BMC motors

Interesting article, these carbs could be great on a Mini if it's not all BS.
http://www.v-performance.com/products/air_fuel.html

Author:  simon k [ Tue Oct 29, 2013 8:39 am ]
Post subject:  Re: Mikuni carbs on BMC motors

I've looked at those (or similar Japanese make) in my mates workshop, really nice.

Before I injected it I was going to to that sort of carb with my blower setup so I had an accelerator pump without squeezing in a weber

Author:  Phat Kat [ Tue Oct 29, 2013 1:16 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

I had to have a look at a few other sites.... a 20% power increase sounded unbelievable.... but... It would seem that a lot of sites are are quoting similar results? Could be a good thing? Especially since they seem to be a somewhat common upgrade for Bikes, you would have much less trouble finding someone to dyno tune it..

Author:  kirby [ Tue Oct 29, 2013 11:28 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

The japanese Have been doing this for years on minis. I saw a mikuni phh on a mini last year, physically smaller than a weber and much more modern.
I'll try and find a photo.

Author:  simon k [ Wed Oct 30, 2013 10:31 am ]
Post subject:  Re: Mikuni carbs on BMC motors

apparently they at least makes the car go forwards and sound like a weber...

http://www.youtube.com/watch?v=irpx9HfdNOk
http://www.youtube.com/watch?v=yYfdKAoEixo

Moss selling a kit for MGBs

http://www.mossmotors.com/SiteGraphics/ ... ikuni.html

Author:  MG Rocket [ Wed Oct 30, 2013 4:32 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

Very compact and for under US$400 and ready to go, it has to be a real bargain. 8)

Image

Author:  coopar [ Fri Nov 01, 2013 6:15 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

Mmm this is getting tempting, more clearance than a weber!
Did it take much tuning?
Bought online I assume?

Author:  simon k [ Fri Nov 01, 2013 7:11 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

coopar wrote:
Mmm this is getting tempting, more clearance than a weber!
Did it take much tuning?
Bought online I assume?


mg rockets picture is taken from the website linked in the first post

Author:  coopar [ Fri Nov 01, 2013 7:52 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

:oops:

Right then who's going to be the guinea pig

Author:  drmini in aust [ Fri Nov 01, 2013 9:46 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

More discussion-
http://www.minimania.com/msgThread/1142 ... kuni_carbs

Author:  drmini in aust [ Mon Nov 04, 2013 10:40 am ]
Post subject:  Re: Mikuni carbs on BMC motors

Another link-
http://www.mikunipower.com/HSR01.htm

Author:  lmbm [ Tue Nov 05, 2013 9:08 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

Hi there,

this is a nice piece of kit,
i have a HSR45 , untested so far, it will go in my new engine ( who knows when :o )!

What i can say about it:
- Looks great :)
- It is very compact... no clearance issues , even with GR long SU Manifold
- no shafts to wear, no butterfly , nothing in the air stream .
- easy to mount with a rubber flange
- There are K&N round filters for them, and it's easy to adapt those "mushroom" style filters also.
- inlet has a nice radius, no need for stacks/ram pipes
- needle has height adjustment ( there are only 3 or 4 available needles ), and there is a variety of main jet sizes
- has accelerator pump, adjustable
- the accelerator pump mechanism/arm is fragile ( found out the worst way, received the carb with broken arm , probably during custom control, manage to alloy weld it ok )
- easy to set up a long choke cable using existing knob
- stock they come with a #4.3 needle valve, used for gravity fed , seems you can run it with that valve and a fuel pressure regulator at ~1.5 psi. Else you can buy a #2.3 needle valve . As far as i know this is the only difference the ones from the V Performance site have. And the rubber mounting flange, which you can get for 30/40 USD .

After reading some topics on other forums, i end up by not buying from that website, got it from EBAY US, for 200$ , new ( Ok it was listed as being the 42mm one ).

would love to have feedback from someone running them on a mini!:)

Cheers
Luis

Author:  pattiley [ Wed Nov 06, 2013 10:54 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

I'm keen to do this for the power increase! Need the money first.
I've read alot about it but still can't work out if this is just a bolt on, tune up and go mod our do I need a new inlet manifold?

Author:  drmini in aust [ Thu Nov 07, 2013 8:45 am ]
Post subject:  Re: Mikuni carbs on BMC motors

It fits any single SU 1-3/4" manifold, eg Minispares, Minisport, or a Rover/Metro 1275 one. Best would be a Russell Engineering RE7, as lmbm says it fits in.
Or if you have more $$$, buy twins and use a Mk2 S manifold or aftermarket equivalent.

Author:  pattiley [ Thu Nov 07, 2013 10:01 pm ]
Post subject:  Re: Mikuni carbs on BMC motors

Ok thanks doc, one more for you.... Did the mini clubman 1098cc come with a suitable manifold OR can it be modified to fit? Even if it tale a quick machine at work

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