Dick
Ok, I figured out that the SUs were not "emissions friendly" by looking at
the connections. My reason for choosing them is that SUs have been on every
LBC I've owned, including my other project car, a '66 Spit MKII. I've had my
UniSyn sitting around since I was in college. So, I didn't want to mount yet
another kitting learning curve, and my ZS were not functional with corroded
needles, and all that implies.
Now the issue is how and what to remove, if I'm going to abandon the
emissions stuff.
1) Do I remove the carbon cannister and plug up the hose from the gas tank?
2) Do I remove or at least unplug the electrical connection to the
anti-runon switch?
3) Do I plug up the the valve cover port and remove all of the connected
hoses?
If all of the above is possible, seems to me to be a win for the antique
cars that don't need emissions tests. All I need to do is carefully wrap up
everything and store it away in case I want to sell my car to a purist, or a
resident of a state with antique car emissions testing.
Thanks,
Jerry
'74 TR6
Original Message-----
From: "Sally or Dick Taylor" <tr6taylor@webtv.net>
To: "Jerry Shaw" <jcs104@home.com>
Cc: <6pack@autox.team.net>
Sent: Thursday, August 02, 2001 8:40 PM
Subject: Re: SU HS6 emissions setup
> Jerry---I don't think you'll be able to comply with the emissions setup
> with the SU HS6 carbs. It is said that this is the reason for going to
> the ZS, which is further developed along those lines. That doesn't mean
> you can't tune the SU to run at the ideal Air/Fuel ratio, when the SU is
> in good condition. You can. What is missing are ways for all of the
> emission hoses that are on the ZS carbs to connect to, plus the bypass
> (engine overrun) valve, a port to provide ignition retard vacuum, and
> such. (You might find a port for vacuum advance, but only the early
> distributors had a pot to use this.)
>
> What the SU is more versatile in, is the needle choices. One has to know
> what is needed for their particular application, and/or a method to
> check the A/F ratio. Otherwise, there's really no advantage over the ZS,
> in my opinion, and I have used both types.
>
> Dick T.
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