PorKen

Not quite two, depending on how you look at the Bosch/NGK scales, and non-resistor, hence the larger gap (1.0mm).

545svk

Dan and PorKen.

No, I did not know this and to show my ignorance I am unsure of what this mean and what the implications are.

Is it OK to use them or should I order the Bosch plugs?

Thanks

Tails

Fit all copper washers to all bolts, so I would suggest that you undo all set bolts, install copper washers and then tighten them down gradually - diagonally across the cover so that you impart even compression on the "O" rings and seals until you bottom out the bolts.

PorKen

I use the NGK plugs.

The big gap is more efficient.

I have dynoed up to 325 rwhp (uncorrected on a cold day, '86.5 5-speed) with them installed.


The only caveat is you must run the stock Bosch coil drivers (with a steel back).