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Carb setup GT186

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Carb setup GT186

Postby burnside » Thu Oct 08, 2015 9:41 am

New rebuild of my Eiber S2; GT186, 60/110 crank, Franspeed Race, Dellorto PHBH30. Running carb as it came out of the box from Richard Taylor;

Slide - 40
Choke - 70
Idle - 55
Main - 135
Atomiser - AV268
Needle - X13 one from top
Float needle - 300

This is certainly on the rich side but is rideable, not a bad thing whilst running in, was wondering what carb setting others with same/similar set up are?
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Re: Carb setup GT186

Postby St George » Thu Oct 08, 2015 5:57 pm

Main seems high, try 125 or slightly under ? Do a plug chop and see if it is too rich on the main. Pilot and choke sound fine.

Colin
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Re: Carb setup GT186

Postby burnside » Thu Oct 08, 2015 7:10 pm

St George wrote:Main seems high, try 125 or slightly under ? Do a plug chop and see if it is too rich on the main. Pilot and choke sound fine.

Colin


I'm not concerned with the main, in fact it's the same size main that's in my GT 200 kit with bgm clubman....only 7 or 8 cc difference between the 2. More concerned with atomiser and needle as it feels a little boggy through the rev range. Also only done 40 miles on the kit so far so won't be doing any chops on the main just yet lol
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Re: Carb setup GT186

Postby bamrattle » Sat Oct 24, 2015 8:46 am

I'm using a 28mm delly r/hand side. av264 x13 2nd groove down from the top 54 pilot
still running an done my 1st 100mls but its cleaned it up from the av268.
N2g champion plug
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Re: Carb setup GT186

Postby jonw » Sat Oct 24, 2015 8:27 pm

GT186, Li 150 Special running 30mm PHBP Open Mouth, Varitronic and PM25EV:
Main 130
Slide 50 2nd clip
Needle X13
Atomiser AV264
Pilot 55
Choke 70

I was initially running a 40 slide but was very "boggy" low to mid so changed to a 50 slide which has improved it massively.
Dyno'd at 19.4 hp at PM Tuning and there's no "free power" there!

Jon.
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