I wouldn't argue, for a moment, with what Greg and Rich have already
said. I would, however, strongly suggest that you look at the needles
you're running. Your choice of needles on SU (or Hitachi SU knockoff)
carbs can make all the difference in the world. (That's assuming that
the jet seats aren't worn!!)
Once you finally get that sorted, I would suggest that you dump the
stock points/condenser in favor of at least a Pertronix ignitor. It's
just a little black box that fits inside the distributor cap, costs
about $90, and completely eliminates the points/distributor. A better
(and more costly) approach would be to add an MSD ignition or, better
yet, just dump the distributor in favor of a Jacobs or ElectroMotive
ignition system.
YMMV
John (Old Fartz & TLS #37) Lieberman
RacerFlash@aol.com wrote:
>
> Sorry to break away form all the hot Nationals News and Protest Updates, but
> I looking for help on a Z. I trying to assist my son who has been building a
> BSP 240Z. He wants to keep the stock carbs, but we are having no luck in
> tuning them. We have rebuilt them very carefully a total of 3 times and are
> following the books to the letter on tuning the carbs, but are still having a
> major problem with the engine running so rich it fouls the plugs with a
> couple of miles.
>
> We also checked for weak spark, by sight only, and seem to be getting a
> strong spark. We have an aftermarket Allison coil with stock
> points/condenser set up. We even check the return fuel line back to the tank
> for stoppage. All looks OK!
>
> HELP! We are almost ready to hurl the carbs as far as we can north!
>
> Thanks for any ideas or help.
> Bob and Stephen Gordon
>
> Bob Gordon
> Delta Region SCCA
> SS #70 94 RX-7TT R2 Silver
> "Anything worth doing, is worth doing FAST!"
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