Nolan,
I cannot remember what's on my 69 GT6+, I'll have a
look this weekend.
I'm working on a turbo 1500 project, of which step 1
is to implement a Ford EEC-IV Engine Control Unit
system. I want the fuel injection, ignition control,
and programmability, and this ECU has been hacked.
Plus, it's cheap, available, and easy to get parts.
Anyway, I must fit the harmonic damper/pulley from the
donor car, as the ECU gets it's base timing from the
cast-in cogs on it.
Turns out not to be such a difficult task. I can
fabricate an adaptor out of 2" dia steel that allows a
simple bolt on.
Only problem is, it uses a serpentine belt, so I'll
have to convert the water pump and alternator pulley
(or use the stock alt).
I have not heard of too many Spitfire crankshaft
breakage failures (perhaps the rod bearings act as a
'fuse'!), but reducing the torsional stresses can only
be a good thing, especially under boost.
I'm sure that there must be some stock crank dampers
with normal V belts that could be adapted for use on
Spitfire/GT6/TR6 motors.
Carter
--- Nolan Penney <npenney@mde.state.md.us> wrote:
> Do you know Carter if the GT6 used a rubber ringed
> pulley/balancer
> assembly? I'd thought they just used a standard
> steel pulley, but another
> person here said they didn't, and looking in the
> Vicky Brit catalog they show
> a picture of a pulley that looks like a harmonic
> balancer type, and they
> don't have a part number for it (though they do for
> the steel Spitfire type).
>
> I haven't pursued it, but this has my curiousity for
> a 1500 engine. I
> don't know if having a damper would help that crank
> or not, but if it
> turned out that I could fit one to it easily, ala
> GT-6, I'd be inclined to
> research the effects it would have, and possibly try
> it.
>
> >>> Carter Shore <clshore@yahoo.com> 10/18 11:28 AM
> >>>
>
> I don't think the GT6 front pulley is a torsional
> damper, and I don't think it's externally balanced
> either, so technically, it's just a pulley. It does
> get balanced individually, but also often gets
> balance
> holes drilled as part of the rotating assembly
> (pulley, crank, flywheel, pressure plate, etc.).
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