Spark Plugs

[SWB1968]

What would any of you recommend using? The car is a 69 2.0 S and will be used for classic car racing..... Was looking at Denso Iridium IW24..... Comments????

Thanks

https://www.facebook.com/pages/Porsche-Fan-Malta-and-all-around-the-Globe/435916856528188

[T77911S]

bosch copper supers. start with a cold plug, maybe a 5. problem could be fouling when starting but check them after shutting down before it idles, perhaps after 50-100 miles

[mspirito]

Those plugs are not for our cars. Best to use conventional plugs , bosch or ngk

[HawgRyder]

Another plug that might work is an Autolite 2626 ... a barrier gap wide range plug.
This type of plug has no projecting ground electrode...so the gap is set at the factory...and never needs regapping.
Bosche used to make this same type of plug for snowmobiles...they called it the "GO plug".
The real advantage of the Autolite plug?...about $2.50 each!
Bob

[911pcars]

Originally Posted by HawgRyder

Another plug that might work is an Autolite 2626 ... a barrier gap wide range plug.
This type of plug has no projecting ground electrode...so the gap is set at the factory...and never needs regapping.
Bosche used to make this same type of plug for snowmobiles...they called it the "GO plug".
The real advantage of the Autolite plug?...about $2.50 each!
Bob

These surface gap plugs aren't a universal fit. What 911 models works with these plugs? I look for a few Porsche models on some application charts, and it's a no-go.

Thanks,
Sherwood

[DRACO A5OG]

+1 Copper NGK's or Bosch.

[911pcars]

Originally Posted by DRACO A5OG

+1 Copper NGK's or Bosch.

Those are the standard go-to plugs. For knats-hair improvement, the proper heat range surface gap plugs don't have a side electrode to shroud the spark in order to equalize the fuel burn. In lieu of these plugs, those looking for that extra edge use indexing spark plug washers to "point" the side electrode in the correct "unshrouded" direction.

Sherwood

[snbush67]

Originally Posted by mspirito

Those plugs are not for our cars. Best to use conventional plugs , bosch or ngk

Why are these plugs not for our cars?
The manufacturer claims that it produces a stronger spark and last longer. Also seems to be a conventional plug, just a smaller stronger center electrode and U groove electrode.

[Bill Douglas]

Can't help re the plugs, but I can pay you a complement. Girlfriend LOVES the color.

[SWB1968]

Wow.... Thanks for the help.... Will shop around to check whats available locally. At least I know what to look for. Will be back with some more pics. Thanks

[Nick Triesch]

Why not just go to Pelican and order the plugs for your car. Or see what they are and go to Pep Boys and buy them there. Or Auto zone.

[zelrik911]

Has anybody used NGK or Denso Iridium plugs in their 911 ?
Curious to know if they worked or not.

[911pcars]

Originally Posted by zelrik911

Has anybody used NGK or Denso Iridium plugs in their 911 ?
Curious to know if they worked or not.

Survey results unknown, but why wouldn't they work? The iridium center electrodes are merely a longer lasting material for extended service intervals. The initial cost is higher, but if they last twice as long, the added cost is a push. If longer, all the better.

Otherwise, more user experience could provide more insight.

Sherwood

[Joe Bob]

Another vote for NGK or Bosch. Correct heat ranges can be adjusted up or down. Consider looking into ""plug indexing"......

[DRACO A5OG]

After a recent diagnosis from a smog test failure.

I checked out my existing plugs and found less then desirable sparks via yellow/orange colored sparks. So I bought some iridium plugs to test versus new copper plugs. The new copper plugs sparked considerably larger and more blue in color.

You can test this yourself using Bentley's method.