Dr.Jeff
True Classic
Ohhh ya, a new dimension to the whole spark plug debate; points vs electronic distributor, which plugs are best for your type ignition.the plugs would fire on the first rotation or two of the points distributor
Ohhh ya, a new dimension to the whole spark plug debate; points vs electronic distributor, which plugs are best for your type ignition.the plugs would fire on the first rotation or two of the points distributor
That might have been a consequence of what I said earlier; NGK offers a very limited heat range selection for each application. Their entire line of plugs is significantly less than that of other plug makers. So the plugs recommended for any given application may be off by as much as 3 or 4 heat ranges (compared to what the others offer). Therefore the ones you had might have been too hot, and the electrodes burned off. To further complicate this problem, if you went to one size colder NGK plug it might have been way too cold and fouled. They just don't offer enough of a heat range selection to work in many cases. I'm not bashing NGK, just relating what I've found in my experiences; in my opinion sometimes it does matter what brand you choose.
That and the heat of a turbo engine's combustion. I believe they typically recommend going a couple of heat ranges colder when converting to turbo. But I don't know the details on that.running LS2 coil packs at significantly higher output likely played a role
Sorry to piggy back on this thread - but I'm looking for suitable Mk1 Uno Turbo Spark plugs (correct heat range, etc.) The one listed in the service manual are really difficult to find (I think they're Bosch).
Any Uno Turbo people out there with any feedback? I just want a reliable plug that's easy to obtain. Thanks!
Sorry this derails the original discussion, but was OEM turbo motor (Audi AAN 5cyl 20v turbo motor in S2 / S4 / S6)That and the heat of a turbo engine's combustion. I believe they typically recommend going a couple of heat ranges colder when converting to turbo. But I don't know the details on that.
I use Magneti Marelli from MWB. They are said to be original style. I always purchase an extra set when I order.
Thanks,
Mike
Sorry to piggy back on this thread - but I'm looking for suitable Mk1 Uno Turbo Spark plugs (correct heat range, etc.) The one listed in the service manual are really difficult to find (I think they're Bosch).
Any Uno Turbo people out there with any feedback? I just want a reliable plug that's easy to obtain. Thanks!
What plug is spec'ed in the original owners manual?
The "FR 6" part of the name indicates M14(1.25), 19mm reach, and Bosch's #6 heat class (one step colder than the NA plug).
Good to know! Thanks, Jeff! I didn't know that's what it meant. I'm sure I'll find a cross that will work. One cross reference says Denso IK20 and another IK22, just need to figure out which will work and go from there! Thanks again, makes sense.