<VV> Head milling, was: PG Turbos??

[Mark Corbin]

Tony, I think the answer to your last comment was REALLY the question that
I was fishing for.

-Mark


> [Original Message]
> From: Tony Underwood <tonyu at roava.net>
> Subject: Re: <VV> Head milling, was: PG Turbos??
>
> At 03:46 AM 9/13/2007, kenpepke at juno.com wrote:
>
> >Setting the idle speed down will generally stop or at least reduce 
> >this problem.
> >If worst comes to worst a person could install an idle motor in the 
> >linkage mechanism
> >to close the throttle completely when the ignition is switched off.
>
> The musclecar crowd running engines with radical camshafts and high 
> idle speeds had all sorts of issues with dieseling and backrunning, 
> so lots of them would either shut off in gear (with an auto) or drop 
> the clutch (same thing).
>
> The smart guys would go junkyarding and find an idle shutoff solenoid 
> off a smogger car which allowed setting an idle adjust that would 
> keep the radical cam'ed engine running with a high idle speed 
> (sometimes as much as around 1200 rpm or more), and still make it 
> stop when shut down by closing the throttle completely when the 
> ignition switch was off.    Worked like a champ.
>
> Pretty much required hardware if you were a nitwit, with a 426 engine 
> w/big cam, who would cheat and try to run the thing on regular gas 
> while puttering around cruising the burger joints.   I could turn the 
> switch off when it was hot and, depending on how cheap the gas was, 
> the damned thing would diesel for 30 seconds or more knocking and 
> clattering like an old Mercedes truck if I didn't dump the clutch in 
> gear to make it stop.
>
> I bet if someone went looking they could still find a couple of these 
> old idle shutoff solenoids in a junkyard somewhere.   Or, 
> cross-reference some parts lists and see if somebody still makes them 
> these days.   Obviously for a 'Vair you'd need two...  along with a 
> bit of fabrication to mount them.   But it would stop the dieseling.
>
> Now:   It's likely easier to eliminate the cause of dieseling rather 
> than go to these lengths, isn't it...?    ;)
>
> tony..