I had a set of those surface-gap plugs in my old VW Squareback, and they
were great! I've been told they were aircraft spec plugs, but have never
verified that.
A good plug of a similar nature is a Bosch Super, W7DTC. It's a triple
electrode plug, of identical heat range to the (shudder) Champion N9Y. VW
uses them as a "long-life" plug for the 80's vintage Golfs and Jettas, and
give them a life expectancy of over 30k miles. I've used them in my Alpine
with good results.
Jon Arzt
>From: jeyerman@ix.netcom.com
>Reply-To: jeyerman@ix.netcom.com
>To: Jay_Laifman@countrywide.com
>CC: alpines@autox.team.net, William Lewis <william.lewis@ucdmc.ucdavis.edu>
>Subject: Spark plug gap
>Date: Wed, 04 Oct 2000 11:24:13 -0400
>
>Many, many years ago there was a spark plug sold that was a surface gap
>plug (NO side electrodes projecting). These things worked great-they
>didn't improve mileage or cut misfires or anything like that (they were
>advertised as solving just about everything!), what they DID do was last 3
>to 5 times longer then a regular plug and solved pinging problems on
>engines that tended to have that problem (most Rotes 4 cylinder!). I used
>them in most of my Rootes cars during the sixties and early seventies and
>then they disappeared from the market. So I would guess that a split fire
>plug would last longer then a regular plug. I would also guess that a
>platinum tip plug might not last longer in an old engine because the old
>engines burn much dirtier then new ones and leave all sorts of crap on the
>plugs.
>
>Jan
>
>
>Jay_Laifman@countrywide.com wrote:
> > Bill writes:
> >My question is what spark
> >plug gap can I run on my split fire spark plugs.
>
>I don't know if you've noticed on the Tiger group, but there was a thread
>just the other day with multiple people telling a Tiger owner with problems
>to immediately ditch the splitfires. "Snake oil", "marketing gimmick" and
>"garbage" were the most common words used. I'd suggest going back to the
>standard N9YC's and starting from there.
>
>As long as we are also on the subject, I've also been told that the
>platinum plugs are no good for our age cars. I've seen proof of it too.
>
>I do have a set of N7YC's that I was going to try, but I've found the temp
>range of the N9's just fine.
>
>Jay
>
>
>
_________________________________________________________________________
|