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RE: What's wrong w/ old carb needles?

To: "Randall" <tr3driver@comcast.net>
Subject: RE: What's wrong w/ old carb needles?
From: Barry Schwartz <v6spitfireguy@cox.net>
Date: Sun, 16 Jan 2005 05:43:16 -0800
Randall,
I usually agree with you, and I'm not saying it didn't happen, but question
what condition you attribute this to.
I could see that happening if a worn needle or seat created a lean running
condition, but it seams odd that a worn needle or seat would cause a broken
valve or overheating condition, since wearing of the parts would only cause
the car to run richer -?? a worn seat would run rich over the entire RPM
range while a worn needle would run more rich over the worn section, which
would likely to be low to midrange 
I could see poor running, bad mileage, or carbon buildup, but not engine
damage - I have actually sanded down needles to affect a richer condition
when I had two Strombergs on my 1300 Spitfire many years ago (which ran
REALLY good, until the manifold cracked) and couldn't find needles of the
correct taper that I needed -
***********************************
>. I blame a "swallowed"
>valve that happened to my Dad's TR3A many years ago on worn jets &
needles.  Can
>cause mysterious overheating problems, too.


Barry Schwartz (San Diego)


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