[DeTomaso] Electric Choke, yes or no?

Janne Mäki-Petäjä eb0711 at kolumbus.fi
Fri Dec 20 15:00:19 EST 2013


Although it's not often seen, it's entirely possible to use metal choke 
tube connected to manifold heat source, with electric choke as well. 
That'll give a heat source to the coil always when the engine is warm, 
and choke will still go off electrically little faster when it's cold.

Janne

19.12.2013 22.09, Mikael kirjoitti:
> A word about electric chokes, I know this is not what was asked, but that
> won't stop me...
>
> On my Longchamp, semi-mild daily driver, yes definitely an electric choke.
>
> But on a Pantera, especially a fast one, I wouldn't want one. I would rather
> rev it a bit with the throttle for the first minutes. The main problem with
> an electric choke (connected to proper 12V) is that if you leave the car
> parked for an hour and get back and start it, the choke will be fully on and
> take a little while to go off, and the engine doesn't need it. That means
> too rich mixture for a while, which washes oil off the cylinder walls. And
> if you have a high performance engine with narrow tuning tolerances and
> colder plugs, maybe even race plugs, the plugs can foul up due to this choke
> action. If you then do the wrong thing, look at your plugs and conclude that
> you need more lean jetting, then it really starts to get dangerous. In
> short, high performance engines shouldn't have an electric choke, it should
> have manual cable operated choke (difficult in a Pantera) or no choke at
> all. Divorced chokes are a bit better than electric chokes, but rarely seen
> these days.
> (And on a totally unscientific note: The sound of the engine when almost
> warm, idling just above the rpm where it would die, that sound is fantastic)
>
>
> Just my $0.02
>
> Mvh/Regards
> Mikael
>
> -----Oprindelig meddelelse-----
> Fra: John Buckman [mailto:jb841 at cox.net]
> Sendt: 19. december 2013 19:17
> Til: detomaso at poca.com
> Emne: Re: [DeTomaso] Electric Choke
>
> Why are we running a new wire?  I just used the wire that is in the OEM
> loom.  It still works great.  Look at your wiring diagram.
>
>
>>>> The short answer is that connecting the electric choke to the existing
> ignition wire can act as a rev limiter for your ignition system.
>
> If you do not use a relay, and if you are not using the factory throttler
> position solenoid, there will be a red wire at the (approximate) center of
> the firewall that can be extended to the new electric choke's PLUS (+)
> terminal.
>
> John
>
>
>
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