I was reading in Vizard's book on the weekend that one of the cheapest, and
most beneficial mods you can do to the A-series engine is to REDUCE the
size of the SU's shafts. He actually recommends reducing the width by
about half, and even filing off the ends of the screws that hold the
butterflys on (though you need to Loctitie them in place). He describes a
few other changes too. Like rounding off the piston edge, and puting a
knife edge on the butterfly.
Now this is all from memory, I haven't got the book here, and I haven't
tried it. I seem to recall him saying these mods were the equivalent of
going up to the next size carb - not bad for a couple of hours with a file!
I'd be interested to hear if anyone has tried this out, any problems they
experienced, and whether they noticed a change in performance.
Greg
>A related question:
>What are the pros and cons of reaming the body and installing bigger
>shafts vs. rebushing the body and installing stock shafts?
>Thanks, Ulix
>
>On 17 Apr 1998, Matt Liggett wrote:
>
>> The throttle shafts are sloppy in the carb body on my HS2 SUs. Where
>> have you all had good luck sending them and what was the total bill?
>> I've heard both good and bad about Apple Hydraulics. I'm on a budget.
>>
>> Thanks,
>> --
>> <mml@pobox.com> Matt Liggett
>> '60 Mini, '70 Midget, '89 SAAB 900t SPG
>>
>
> Ulix __/__,__
>.......................................................... (_o____o_)....
> '67 Sprite
|