If your Su's are running right ,just lift the needles .5mm,this will rich'n the
mix.
I found this the easiest way,Plus if they are old Dont use light oil use 30/40
in them
Springs from a Trimph 2.5 TC are stronger and give a bit more rev.

Malcolm

Terry Rudd wrote:

> When switching from leaded to Optimax you usually only have to richen up the
> idle circuits a tad. I've not done it with SU's to know if this is
> applicable but other carbies.
>
> regards
> Terry
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of blown 510
> Sent: Friday, 1 February 2002 12:51 PM
> To: [EMAIL PROTECTED]
> Subject: Su carbies
>
> i need help with tunning my twin su carbies. i changed my fuel in my 1600 to
> shell optimax but once i did that it run like crap is there anyway i can
> tune the carbies or the hole engine to run better on premium unleaded. The
> engine is a L18 with mild work with extractors and twin su's.
>
> Any help would be great as i am getting sick of it being like this.
>
> thanks
> blown510
>
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