Are these carbs one and the same?

I see them listed together all over the place, can anyone shed any light?

Thanks!

I believe so one is a measurement in imperial the other is metric, it explains it in TBLAE i think

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100% Pure A Series Turbo
Morris - The Original RedBull Racing

HS6 (if that is what you're talking about) is the 1.75" SU with the float on the side like a normal Mini SU (but bigger).

HIF44 is 1.75" with the float on the bottom.

Both the same size and both use the same needles and stuff.

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HIF6 and HIF44 are the same just in metric and imperial measurements, they do use different needles and springs internally too, the piston is even on a ball bearing to assist in a smoth slide etc.

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100% Pure A Series Turbo
Morris - The Original RedBull Racing

So is one better than the other? Also, 44mm ~= 1.75", what the hell is 6 for?

Can anyone tell me what he HIF bit stands for?

HIF = Horizontal Integrated Float Chamber

Was developed primarily to meet the requirements of exhaust emission control systems.

No me not that clever - i just bought the book last week LOL

I think the 6 is for 6/8 ths the old imperial carbies were named with the number of 1/8 ths they were over an inch

so
HS2 = 1 1/4 inch carbie
HS4 = 1 1/2 inch carbie
HS6 = 1 3/4 inch carbe

Correct me if I am wrong

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Roads need more corners
A Deluxe(CG13DE), 2 Clubbies(998 and 1275) and 2 Morris 1100Ss

thas the one i think

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100% Pure A Series Turbo
Morris - The Original RedBull Racing