Re: Super Tigre Carb Tuning

"Ted" <tkennedy63@[EMAIL PROTECTED]
> wrote in message 
news:b975c373-fd62-4388-8d65-3ad1457d1364@[EMAIL PROTECTED]
>I am having a bit of a problem getting my ST 51 to run smoothly. I
> have had STs before so I know you have a delicate balance between the
> low end and high end before you get it just right. I recall reading
> somewhere that the position of the spray bar is very critical as well.
> Has anyone also heard of this? And what position would be ideal? Most
> engines like it pointed straight down but I seem to think the STs
> prefer a little upward thrust of the spray so if you are looking from
> the needle valve side it would be pointed around 4 o'clock. Any
> thoughts or experience on this? Many thanks.

 Is it a true 2 needle carb, and not a high speed needle and air bleed 
valve?

If the spray bar changes do not do the trick, and it is a two needle carb,

you might be able to take a trick from the older Fox engines.

The instructions told the user to modify the profile of the low speed
needle 
to adjust the midrange.

The told you (and they were right) to chuck it into a drill, and turn it 
fast, and put some sandpaper to it, either on the tip to "dull it" or the 
"shoulder" where the angle met the full diameter of the shaft.

I think (it has been a while) if the midrange was lean, you sand a small 
radius on the shoulder.  It does not take much, and if you go too far, be 
prepared to buy a new needle and try again. DAMHIKT!
<g>
-- 
Jim in NC