Sounds like a good idea to me. I would contribute.
Don Malling
Jim Davis wrote:
> I've brought this up before, and I do so again only because it seems
> particularly relevant to this thread...
> In May, 1973 Motor Trend magazine ran an article about dyno-tuning a
> stock TR6. The article is reprinted in the "Triumph TR6 Gold Portfolio"
> on pages 114-115.
> To summarize, Geraghty Automotive, 4062 Verdugo Rd, Los Angeles put a
> stock '73 TR6 on it's dyno and found it to run way too lean with a too
> slow advance curve. Their solution was to place the carb needles on a
> lathe and through trial and error shape the needles to give a proper f/a
> ratio as well as lighten both distributor springs to give a more
> aggressive advance curve providing 16* total advance at 3100 rpm. This
> process provided an (at the wheel) increase of 14 hp (17 to 31) @ 2500
> rpm and 21 hp @ 5000 rpm (50 to 71)!
> Geraghty then offered the re-profiled needles and lighter springs as a
> kit for TR6 owners.
> Geraghty Automotive apparently existed in 2001, as I did a search and
> found a site that listed John Geraghty's shop having done some truck
> dyno work in 2001.
> Could someone in the LA area look Mr. Geraghty up and find out if he
> still has the needle and spring specs. for TR6s? And couldn't the same
> thing be done for others with similar engine enhancements, such as a kit
> for those with Richard Good's cam and 3 carb set-up with 9.5:1
> compression? No, each application wouldn't be ideal, but it would get
> some of us a lot closer to ideal than where we are now.
> My point is, if we invest as a group to have one, two or three different
> cars dyno'ed with known specs, we could develop kits with sets of
> needles and springs and choose those that most closely resembled our
> car's needs. That would be much cheaper than each of us doing it on our
> own.
> Am I way off here?
>
> Merry Christmas to all!
>
> Jim Davis
> Fortson, GA
> CF38690UO
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