> Recently cleaned the SU H6 carb pistons on my TR-3A and found I
>couldn't remove one of the needles. Interestingly, it slowly dawned on me
>that I had encountered the problem before when I rebuilt them in Summer
>1966. In both instances I backed out the set screws all the way and used
>as much hand force as possible short of risking a bent needle. The stuck
>needle feels as solid as if it were welded there. The needle from the
>other piston practically fell out.
> Anyone else encountered this problem or have a suggestion about what
>might be going on? I'm concerned about wrecking the piston by trying to
>force the needle out when I do a complete rebuild in a couple of months.
> Thanks.
>John Cowan
Yep, had this problem with an HS2 from my Spit MkIV, I held the end of the
needle in a vise and yanked the piston away. Had to file the profile back onto
the needle afterwards!! Only joking. I was replacing the needles anyway so it
didn't matter, and seeing as your needles have been in there for 30+ years it's
probably about time you did to :-)
Rich
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