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1100 carb & filter advice
https://www.ausmini.com/forums/viewtopic.php?f=2&t=88686		 Page 1 of 1
Author:  sako [ Sun Feb 22, 2015 9:13 am ]
Post subject:  1100 carb & filter advice
Hi guys,

I'm just after some advice on improving the existing setup on my 1100.
Currently I have the following air cleaner fitted and am hoping that fitting a Ramflow or K & N filter will have the engine breath a little better, any recommendations?

Current filter

Image

I'm not exactly sure what size Carby is fitted, is there an easy way to identify this?
It does have a mini sport inlet manifold, is this worth keeping or would changing to a different manifold/carby setup provide better performance?

Image

Image

I have only just bought this mini and it looks like it may have extractors fitted they look pretty small though so I will also be looking at a decent set of extractors.

Any advice would be appreciated.

Thanks,
Author:  goodie [ Sun Feb 22, 2015 9:23 am ]
Post subject:  Re: 1100 carb & filter advice
Your carby is an 1-1/2" , should be ideal for your engine , as for the extractors , it would be a lot of work for minimal gain , depending on what the internals are of your engine , if it's a bog stocker , your not going to notice any difference , same with the air filter, you could change it to either one that you suggested for appearance , but don't expect it to throw you into the back seat when you put your boot into it :wink: .
Author:  sako [ Sun Feb 22, 2015 9:42 am ]
Post subject:  Re: 1100 carb & filter advice
Thanks goodie,

I'm pretty sure the internals are bog stock.
I'd love to build something along the lines of the 68mm however as a minimum I would plan to change cam, headwork etc...
Author:  simon k [ Sun Feb 22, 2015 9:57 am ]
Post subject:  Re: 1100 carb & filter advice
spend your money getting it tuned properly as it is
Author:  drmini in aust [ Sun Feb 22, 2015 11:28 am ]
Post subject:  Re: 1100 carb & filter advice
A sports filter will give more noise than that donut one, but no more power.
For explanation of this see http://www.calverst.com/c_corner.htm
Author:  timmy201 [ Sun Feb 22, 2015 1:11 pm ]
Post subject:  Re: 1100 carb & filter advice
Here is a link to the test by KC. It suggests a KN filter in the standard box is better on a standard engine than a cone or pancake filter..

http://www.minimania.com/Air_filtration ... test__1288
Author:  sako [ Sun Feb 22, 2015 4:56 pm ]
Post subject:  Re: 1100 carb & filter advice
Thanks for the info.

Can anyone recommend a good tuner/engine builder in Melbourne?
Author:  aspman [ Wed Mar 11, 2015 1:08 pm ]
Post subject:  Re: 1100 carb & filter advice
Hi guys, I am in the same boat as the OP.
1100 stock, same type of filter and carby.
the advice around my work(you know, from the experts) is that a bigger or twin carbies would provide a little more HP.
would that be right?
also any tips on a experienced mechanic for a tune up in the south Brisbane area?
Author:  drmini in aust [ Wed Mar 11, 2015 1:31 pm ]
Post subject:  Re: 1100 carb & filter advice
That is an HS4 carby, it is already bigger than the HS2 used on all 1098 Minis.
Twin HS2s go really well on a 1098, even a stocker- but if the motor is still stock inside, the HS4 you have is big enough if you are keeping a single.

If it has a cam and headwork already, THEN it's worth fitting either an HS6 or an HIF44 carby, on what you have or a better manifold.
Better = Russell Engineering RE7, the Minispares C-AHT770 one is much the same as what you have now. The RE7 needs a Weber box fitted to make room for any air filter.
Author:  timmy201 [ Wed Mar 11, 2015 1:34 pm ]
Post subject:  Re: 1100 carb & filter advice
If you get something like a minispares "Stage One Kit" with a 1 1/2" SU carb it can be a good place to start. Mine was about $450 delivered from the UK. With a good tune up you'd get a bit more power and a better noise too.

http://www.minispares.com/product/Class ... STN17.aspx
Author:  Irish Yobbo [ Wed Mar 11, 2015 1:41 pm ]
Post subject:  Re: 1100 carb & filter advice
aspman wrote:
Hi guys, I am in the same boat as the OP.
1100 stock, same type of filter and carby.
the advice around my work(you know, from the experts) is that a bigger or twin carbies would provide a little more HP.
would that be right?
also any tips on a experienced mechanic for a tune up in the south Brisbane area?


Bigger isn't always better. You can always fit a bigger carby, but it will bog down and ruin your torque at low rpm and *might* give you a little more at the top end. 1 1/2" is fine for a standard 1098, you would go up to 1 3/4" if it's more modified.

My order of attack would be:

A 'stage 1 kit' - new extractors, inlet exhaust, and air filter, same as what sako has now (if the extractors have been fitted, I presume the exhaust has been changed). You can modify the original air box by drilling holes around the sides and fitting a good quality filter. With a tune this should give you ~20% more power. Be sure to get it tuned by somebody who knows minis!

EDIT - you guys beat me to it :)
Author:  MiniVLT [ Wed Mar 11, 2015 2:49 pm ]
Post subject:  Re: 1100 carb & filter advice
Quote:
also any tips on a experienced mechanic for a tune up in the south Brisbane area?



Matt Theminiman
0407 135 656
ReadSpeed Mini Mecca
(07) 3399 9999

Highly recommended!

Cheers Shane
Author:  sako [ Wed Mar 11, 2015 7:04 pm ]
Post subject:  Re: 1100 carb & filter advice
can anyone recommend a good tuner in Melbourne?
Link Automotive, Len Read?

Thanks,
Author:  aspman [ Thu Mar 12, 2015 1:55 pm ]
Post subject:  Re: 1100 carb & filter advice
thanx guys. :)
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