Re: [AMC-list] Tune Up Help

[tom jennings <tomj@xxxxxxx>]

> have you considered going more modern than that?  search the web for
> 'tfi tuneup'; it's based on a '78-up dist.  the only thing you might
> want to do beyond tuneup is recurve the dist for your pre-smog motor.
> you can unlock quite a bit of 'free' hp that way, and [flip side] gain
> mileage too.
>


Actually, i personally no longer think the TFI "improvement" is a good idea
any more. It's all 30+ year old parts, and a lot more wiring and complexity.
The reliability of the replacement boxes sucks. The Pertronix is modern,
very efficient and performs better than the Duraspark box. You can use a TFI
coil with it, but unless you are revving way past a stock engine what you
really want is solid reliable spark that doesn't drop off at 4000 rpm like
points do.

The Pertronix "points replacement" and matching epoxy coil is clean, neat,
easier to install (one new wire: switched battery/ignition source) and, in a
worst-case scenario, you could stick points back in.

The only downside is finding a points distrib that doesn't have a worn out
shaft bushing. I strongly suggest completely disassembling even rebuilt
distribs, in my experience the lube hardened decades ago. Reassemble with
good modern lubricant and they'll last forever with zero maintenance.

Duraspark is a bunch of old tech with a lot of oddball, klunky connectors,
that themselves are a source of unreliability. Adds a lot of crap under the
hood too, and harder to wire if you do it right.
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