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36mm Mikuni jetting


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Posted

Hi all. I have been over what I think are all the available posts and links but can’t find what I need 

So… it’s the much talked of Mikuni bst 36mm carbs on a GSX1100. ( 83 in this case)

I have a nice set from

a 92 GSX 750F ( katana )

What I would like to know are the baseline jet sizes and settings .
It has a ‘Mac’ 4-2 exhaust ( anyone want to trade for a 4-1 ?) Stock cams

Right now it has a set of RS flat sides on which will be going on another more worthy build and to be honest doesn’t really run as I’d like with them on 

Anyone care to give me some ballpark sizes etc.  
Big thanks for your time.

John


 

 

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Posted

If you read all the jetting related topic, i am pretty sure the general consensus would be to have it set up on a rolling road. A proper opererator will get it running properly pretty quick.

Ease of mind and such.

 

A jet size around 135 for a aircooled 1100 with cv36mm seems a common size but there is a difference in flowrate between Keihin, Mikuni and the others.

That was for Bandit 1200 - 36mm carbs on a aircooled 1100 .

Local conditions, such as elevation and fuelquality, general state of carbs incl needle shape, engine tune plus filtration ( Pods /  OEM / modified airbox ) and exhaust will give you a variable of +/- 50% on that jet size.

Please document what you ended up with , with a AFR graph to help others with a similar tune

  • Like 2
Posted

Will ultimately put it on the local dyno. But first want it to fire up and pull some revs. 
Could be a while but I will announce all results 

Thanks 

Posted

Hi

my config

gsx 1100e

Yoshi stage 1 cams , stock airbox K+N inside , V&H 4/1  with racing baffle

gas  98 octane

carbs from efe,  36mm ,  needle in middle , 120 jettings , screws 1+4  , two 1/2     2+3  , three

all other jettings  efe stock

runs quiet well

 

cheers

 

Uli

 

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