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Alex1340

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Loughborough

18th Jan, 2009 at 10:28:22pm

Hi guy.
I'm having bogg brothers make a inlet manifold for twin bike carbs for my n/a 1380. The only thing is boggs want to know what size carbs I want to use. The choice is 38mm or 41mm. Last rolling roll on a stage 3 head got 85bhp at the wheels. I've gone to a stage 4 (36,31) head and 1.5:1 roller rockers, aiming for 100+ bhp at the fly.

What would people recommend?


wolfie

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Somewhere around Swindon

18th Jan, 2009 at 10:33:00pm

both a bit big imo

Crystal Sound Audio said:
Why wolfie...you should have your name as Fuckfaceshithead !


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paul wiginton
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Milton Keynes

18th Jan, 2009 at 10:38:17pm

It will only ever be breathing through 1 carb at a time so id go for the 41

Paul

I seriously doubt it!

Mr Joshua

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Luton Bedfordshire

18th Jan, 2009 at 10:51:34pm

Inch and a half or not quite an inch and a quarter. If you go with the 41mm your at a mid ground between the two. I say 41

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joeybaby83

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Isle of Man

18th Jan, 2009 at 10:56:44pm

hasnt someone on TM got this setup, i.e. twin ike carbs on a 1380?

i remember thinking they were quite large compared to the su, but apparently they gave the goods

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"



joeybaby83

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Isle of Man

18th Jan, 2009 at 10:59:20pm

bingo, steve d is the man to speak to

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=259505

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"



Alex1340

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Loughborough

19th Jan, 2009 at 07:20:02pm

Yeah he runs 31mm ones. I'm not sure they will be big enough.
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