Ron and others,
I was about to install a dellorto DHLA40 of my brothers but he said its more
hassle than its worth, as last time he used it he had starting problems with
it and reckons his sprite had less power and used more fuel with it on.
Theres a little coil spring operated mechanism on one side that appears to
be a bit knackered.(the spring dosen't appear to be how it should, one end
isn't fixed)I know nothing about these carbs either.(used to know my
chryslers carter back to front so I'm not totally inept) I figure it should
be a good carb.
Anyone know how to get it into form?
Thanks heaps for the tuning tips Ron. I'll try to snag a timing light from
someone and give it a go myself.
Andy
>From: Ronsoave@aol.com
>To: trunkie@hotmail.com
>CC: spridgets@autox.team.net
>Subject: Re: Octane & CRs was Re: Automotive calculations for dummies
>Date: Tue, 11 May 1999 09:09:29 EDT
>
>In a message dated 99-05-11 06:05:39 EDT, trunkie@hotmail.com writes:
>
> > Any hints for me? I would prefer to do it myself and keep the
> > cash
> > Andy
>
>Everyone seems to have their own way. Assuming your carb is good order
>otherwise (throttle shafts ok, jets are centered, etc.), make sure your
>ignition is in good shape (points, plugs, timing etc.). Personally, I
>keep
>the Uni-syn and Colortune in the drawer. I use the "tube in my ear" method
>for balancing (with stethoscope as an enhancement). Forgive me if I miss a
>step or 2, I'm running a Weber right now. Loosen the throttle linkage
>nuts,
>and back off the throttle stop screws til they just touch the throttle
>stop.
>Lower each screw 1 or 2 turns of the throttle stop screw. Listen to the
>hiss
>(or roar) in the ear tube until you have the same level of air noise.
>Tighten throttle linkage nuts.
>
>For mixture I bring the jet nuts to the top, back off 8 (most books say 12
>-
>whatever.) flats, start the car, and begin lowering the jets a flat at a
>time. The engine speed will increase for a bit. When it just begins to
>drop, I bring the jets back up 1 or 2 flats. To check your work, raise the
>lifting pin so that the piston rises a little bit - less than 1/8 inch. If
>the exhaust note rises and stays there until you drop the piston, you're
>two
>rich. Lean the mixture by a flat and repeat the lifting pin test. If the
>revs drop and stumble, you're too lean. Go one step richer. If the note
>rises and then falls back to where it was before you used the lifting pin,
>you're in good shape. Adjust the choke linkage so it works evenly on both
>mixture nuts. Re-adjust the idle screws to your best idle (lowest with
>engine running smoothly. Should be 800 - 900).
>
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