S1 XJ6, carb needles for HS8's

[Robert_Laughton]

Thank you Frank,

I forgot to mention that I did check ign timing. If I recall from a year ago, it was 8 or 10 BTDC at idle and around 36 all in at 3000.

I found this from the archives which suggest a BAW needle might be better than the one I have:

SU HS8 Needle questions

a couple of questions and some info on needles for HS8 carbs. here is what was fitted from S1 thru S2 [image] here is the individual profiles of those needles BAW 990 950 918 887 860 827 799 774 755 735 715 700 690 680 670 650 4.2 s1 BBK 990 950 920 890 860 827 799 780 767 753 740 727 713 700 687 675 early s2 BCC 990 950 924 897 855 820 800 790 775 770 759 734 710 690 670 650 late s2 The engine I have has been rebuilt with …

Maybe Tony has something to add?

Thanks,
Rob