Ya'll remember a while back when I missed a shift in the Celica... 3rd to 2nd
instead of 4th, only that was at 8000 rpms and accelerating. Ain't no rev
limiter on the planet that could have saved that sucker! I bent all 8 exhaust
valves, some into interesting S shapes. Glad to hear your's did not meet the
same fate. But I can tell ya, doing a head on a '67 2000 is MUCH easier than
on a 2000 Celica GTS!
Greg Burrows
67 2000 #588
-- RWM <RWM@RWMann.com> wrote:
Glad it worked for you. One point, however. Electronic limiter or not,
it is possible to drive the engine beyond limits due to inertia effects
in a missed downshift, and especially with a lightened flywheel/pressure
plate. Can't bet on a limiter to protect from that. The limiter works
best in an un-loaded missed shift, as in an upshift to neutral.
- Bob Mann (BTDT, got the bent valves to show for it)
Andrew Murphy wrote:
> Hey All,
>
> A couple weekends back I took the roadster out and drove to one of my
> favorite roads- Harbor Drive in Dana Point. It's a four lane road that
> runs along the harbor and has some great sweeper turns on it. I like
> sweepers as I find that balance point where I can hold the turn at a
> constant rate of speed and test the grip of my yokos. Great fun.
>
> On this trip I was doing a left hander at about 75 MPH and I was in
> the far right lane. Up ahead I could see a car pulling out of the
> yacht club and making the left that would put him in the same
> direction as me. Now as I was in the right lane I assumed he was going
> to take the left lane as it was open. He didn't. He was an elderly man
> driving a mercedes and he was going so slowly that he was actually
> blocking both lanes by the time I had to make my decision as to what
> to do.
>
> I was in 5th and quickly downshifted to what I thought was fourth but
> I missed it and put into second instead. I know- the 5 speed
> transmission is self-centering and I should have just let the shifter
> find fourth but I was a little panicked due to the looming collision
> so I pulled harder than I normally would have. I hit second gear at
> about 65 mph.
>
> Luckily for me, my MSD 6AL has a built in "Soft Touch" rev limiter
> that kicks in at 6000 RPM. It reduces the intensity of the spark and
> also fires every other cycle to ensure that fuel does not build up in
> the cylinder. Worked like a charm. The thought of what might have
> happened if I did not have it in place scares me. Well worth the money
> I paid for it considering the price of a rebuilt head.
>
> So for those of you considering a Gary Boone EI dizzy (great product),
> you may also want to consider a MSD 6AL. It may just save your engine
> someday.
>
>
> Andrew Murphy
> 1967.5 2000 Solex
> SRL311-00489
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