CARB SU CARB JET NEEDLE {Spring Type} COMPARISON of 4 COMMON NEEDLES and the MINI needle .

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SU CARB NEEDLE COMPARISON

NEEDLE SIZES ; INFO ONLY

AEB is the Yellow top needle used on the 850 Rialto H.T.E {Yellow Top} 850cc 10.5 to 1 compression ratio engines with the enclosed carb overflow system

AAC is the needle used on the early Robin 850cc 9.5 to 1 compression ratio engines before the enclosed overflow system was introduced .

AAT is the needle used on the later 850 9.5 to 1 compression ratio Robin and Rialto engines with the enclosed carb overflow system .

I have created a spreadsheet comparing the normal AAT jet needle {Spring type } for the SU HS2 carb against 3 other RELIANT NEEDLES .

I have also compared the standard needle found in the MINI SU CARB against the normal AAT jet needle {Spring type } .

My online SU HS2 carb JET NEEDLE {Spring } COMPARING 3 OTHER RELIANT NEEDLES against the NORMAL AAT NEEDLE and the needle found in the MINI carb .

Reliant Jet Needle Comparison spreadsheet Online

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For anyone who is thinking of using a Standard MINI SU carb ;

The MINI carb is fitted with an AAV needle which is the SAME or SLIGHTLY WEAKER at the stages around the TICKOVER and SMALL THROTTLE OPENINGS .

It is MUCH RICHER from MID THROTTLE to the TOP END

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SU CARB NEEDLE ; http://www.mintylamb.co.uk/suneedle/

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Thanks to R3W member Wilfried for the following links

SU CARB NEEDLE ; SU Carb 0.090" Needle Javascript Based Sortable Table Link 1

SU CARB NEEDLE ; SU Carb 0.090" Needle Javascript Based Sortable Table Link 2

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SU Carb HS2 type ; Mixture Checking by Lifting Pin

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