John, is it possible that a tach signal is interacting with these two spark
triggers to function as a rev limiter? wmts
-----Original Message-----
From: John Goodman [mailto:ggl205@yahoo.com]
Sent: Saturday, January 24, 2004 11:32 AM
To: land-speed@autox.team.net
Subject: Re: Seeking Sports car help (Sort of LSR)
Dick, I know a little about that engine/car. 1976 was
the only year Porsche used the 2.0L VW Type 4, four
cylinder engine in a 912. They were also found in the
Porsche 914, the VW bus and certain variants. This was
Porsche's way of trying to drive cost down and broaden
there buyer base. It didn't work. This same type 4
engine was also common to the then popular Bosch Super
Vee professional racing series (single seat, open
wheel formula cars). I raced one of these things for
about five years. Anyway, Porsche used everything
directly from VW so, much should be known about the
912E engine. One common failure of this engine was a
pair of spark triggers located at the base of the
distributor. These are easily overlooked and accessed
from outside the distributor. The car would be
chugging along just fine and poof, it would stop dead.
Those outside triggers were often the source of the
problem.
John Goodman
--- Dick J <lsr_man@yahoo.com> wrote:
> Yah, Yah, I know, this is not the right forum. I've
> tried the "right" forums and am getting no help. At
> least this list has a bunch of guys who know which
> end of the wrench is box and which is open! That
> other list has a bunch of "enthusiasts" who do all
> their wrenching and tuning with an American Express
> card!
>
> Does anybody on the list have a friend who really
> knows his stuff regarding vintage Porsches.
> Specifically, 1976 912E? Quite a rare car - less
> than 2000 built!
>
> The 912E has a regular points ignition, but was the
> first Porsche to have electronic fuel injection. I
> am encountering what I am sure is a rev limiter of
> some sort, and I want to by-pass it. It has to be
> something in the fuel injection. Porsche used an
> electronic distributor rotor for rev limiting in the
> more common 911 models, but not in the 912E. (A
> rotor with built in rev limiter - - -gheess - - what
> next?)
>
> I guess this message really is LSR-related, because
> I want to by-pass this rev limiter so I can run the
> car at Maxton, otherwise I won't even bother loading
> it on the trailer.
>
> Dick J
> In East Texas
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