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Well....it did to a high horsepower rotor. Only because standard type plugs just weren't up to the job I think. The plugs i used are meant for 2-stroke motorbikes.

The difference in your motor might not be quite so drastic, but its something worth trying. Colder plugs will help hold off detonation too.

well i hope its something i can fix for free at the moment cause im as broke as could be but will see in the future.. cheers

I agree with phunkdocta - the standard coil is not the problem. I ran 12psi and 8000rpm on my old A14 turbo with standard coil, standard points dissy, and standard mech fuel pump.

I tend to think your overboost theory is more likely. Try adjusting the wastgates to 9psi and edging up till your limit of 10psi is reached without any cutting out. Although that's probably not so easy to do wit the TT setup either...

hey rc, when i had that set up runing i had a similar problem, it definatley felt to me like boost pressure was overcoming fuel pressure. i had a holley blue and the reg bypassed under boost. I tryed all sorts of ways to up the fuel pressure, i tryed streaching the spring in the releaf valve on the fuel pump, but i ended up limiting the boost to under 10 and there was never a problem.
i think to try colder plugs would be well worth a try, even just one heat range. That wouldnt cost a heap of money

On the subject of coils
- twin coils wouldn't help much because the high voltage would be the same (same dwell from the dizzy, same output)
- dual points help by getting more dwell ... but this mainly needed at higher rpm
- Instead of a new dizzy, you could install a Pertronix kit, then the points trigger the blackbox which fires the coil
- The newer coils (without ballast) have a higher voltage output, so they can run big plug gaps to fire lean mixtures. But a points setup would burn up from the extra current (hence need for electronic ignition retrofit)

But if you don't need it, don't bother ...