The auto industry learned years ago that the public does not like ping,
occasional or not. I don't think you'll find any new cars that ping under
any conditions. (Yes, the early computerized fuel injection cars did ping,
but the "Pinging is OK" in the owners manual didn't placate anyone. Pinging
just sounds BAD! I personally wouldn't own a car that pinged.)
Bob Donahue (Still Stuck in the '50s)
Email - bobmgtd@insightbb.com
Cars: 52 MGTD - #17639
71 MGB - #GHN5UB254361
Member: NEMGTR #11470
NAMGBR # 7-3336
Hoosier MGB Club
Olde Octagons of Indiana
----- Original Message -----
From: "Paul M." <rowman22001@yahoo.com>
To: "Simon Matthews" <simon.d.matthews@gmail.com>; "Paul Hunt"
<paul.hunt1@blueyonder.co.uk>
Cc: <mgs@autox.team.net>
Sent: Friday, March 25, 2005 9:25 PM
Subject: Re: air pump
> --- Simon Matthews wrote:
>> Would not it be better to time the engine such that
>> light knock/pinking/pinging is heard occasionally?
>> This will produce more power, with little chance
>> of engine damage
>
> I was always under the impression that pinging was
> pre-ignition, and that pre-ignition causes small
> spikes of intense pressure in the combustion chamber.
> Those spikes of pressure are damaging to the pistons,
> and can eventually burn or break them.
>
> When I worked at AutoThority and we were tuning
> high-performance engine managment software
> ("performance chips") for Porsches and BMWs, the
> engineers were very careful to avoid any kind of
> knocking or pinging, even at light load, part-throttle
> because of the damage it caused. They used very
> expensive and sensitive add-on knock-sensors to make
> sure the engine wasn't detonating under any conditions.
>
> Paul Misencik - 1971 MGB - www.sopwithracing.com
>
> THE CAROLINA TROPHY - 2005
> A vintage driving event in the spirit
> of the Mille Miglia, Rallye des Alpes,
> and Colorado Grand.
> See www.carolinatrophy.com for details.
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