BMW K bikes (Bricks)

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1Back to top Go down   Throttle body balance tube Empty Throttle body balance tube on Wed Oct 09, 2013 3:58 pm

2slow

2slow
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was wondering has anybody ever tried linking the throttle bodies together with a balance tube plugged into the port that you use to balance the bodies we do this with all of the carb bikes I wonder if it would work on a K bike?

    

2Back to top Go down   Throttle body balance tube Empty Re: Throttle body balance tube on Wed Oct 09, 2013 4:12 pm

Guest

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@2slow wrote:was wondering has anybody ever tried linking the throttle bodies together with a balance tube plugged into the port that you use to balance the bodies we do this with all of the carb bikes I wonder if it would work on a K bike?
Yes it does. the 16 valve and the K1100s have a large diameter pipe that links them but it is at the rear so you don't see it too easily.

    

3Back to top Go down   Throttle body balance tube Empty Re: Throttle body balance tube on Wed Oct 09, 2013 4:43 pm

Comberjohn

Comberjohn
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If that's the case, do you still need to sync the TB's on the 16v engines?

I seem to remember this mod being done on jap fours years ago for the same reason, but was sceptical at the time.
Can understand it needing to be a large bore pipe. If the bore was small, I couldn't see it allowing for the quick changes in vacuum between, say, the front and rear TB.


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4Back to top Go down   Throttle body balance tube Empty Re: Throttle body balance tube on Wed Oct 09, 2013 5:03 pm

Guest

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When I bought my 16v, new throttle rubbers and a full sync using the factory screws was one of the first things that I did, it transformed the bike despite having that tube at the back!

    

5Back to top Go down   Throttle body balance tube Empty Re: Throttle body balance tube on Wed Oct 09, 2013 10:26 pm

RicK G

RicK G
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Bikerboy I think that tube enters the venturi above the butterfly and so has no effect till the butterfly opens up a bit. I have my balance tubes all joined to use the vacuum cruise control and to be honest it didn't seem to make any difference


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Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

6Back to top Go down   Throttle body balance tube Empty Re: Throttle body balance tube on Thu Oct 10, 2013 7:01 am

charlie99

charlie99
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+1  rick ...the rear entrys that is

the front entrys exit below the butterflys


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