[PAUL K]

Originally Posted by Dragncar

The Champions looks to have 1-2 more threads than the others. Plugs are dark, not tan at all.
But I have not been able to get a true reading, shutting it off at WOT and checking. Tough to do during actual racing.
I have not tried to lean it out either with jets or air bleeds.
Only one more race weekend for me and I will try the 1050 I had built for the engine.
I had a 1.39 sixty foot one run. Pretty good for not even playing around with launch RPM. Been setting it at 3400 and leaving it.
That 1.39 gave me a 6.08 but at this time I consider it a blip, I did not get a MPH that run. Have not been able to reproduce it in my 2 other passes.
The engine is not making 750+ HP to run that ET. I know its making more than the last engine.
But if there is a 1.39 in her just starting out there has got to be a 1.37 or better once I get it figured out.

Did you look at the chamber with the plugged screwed in? A lot of the high ports it's common to have several threads sticking into the chamber.

[Dragncar]

Originally Posted by PAUL K

Did you look at the chamber with the plugged screwed in? A lot of the high ports it's common to have several threads sticking into the chamber.

No I did not. How negative a thing is a couple threads showing ?
I was thinking about running the Champion Race plugs the last race just because they look to be a tad hotter than the others.
Maybe I will try the NGK plugs.
They are the most expensive by far, 5$ each. Autolights are the best deal, 3.25 $ each, Champions in the middle.

[PAUL K]

Originally Posted by Dragncar

No I did not. How negative a thing is a couple threads showing ?
I was thinking about running the Champion Race plugs the last race just because they look to be a tad hotter than the others.
Maybe I will try the NGK plugs.
They are the most expensive by far, 5$ each. Autolights are the best deal, 3.25 $ each, Champions in the middle.

The exposed threads can act as a glow plug. It usually doesn't cause a problem but I'd be cautious with a pump gas deal.

NGK used to be cheap. Then one day someone at NGK realized they could increase profits by raising the price. For some unknown reason they gave their wharehouse distributors a month notice they were going to triple prices. This caused a massive shortage that took more than a year to fix.... I'd stick with the Autolites.

[Dragncar]

Originally Posted by PAUL K

The exposed threads can act as a glow plug. It usually doesn't cause a problem but I'd be cautious with a pump gas deal.

NGK used to be cheap. Then one day someone at NGK realized they could increase profits by raising the price. For some unknown reason they gave their wharehouse distributors a month notice they were going to triple prices. This caused a massive shortage that took more than a year to fix.... I'd stick with the Autolites.

Still mixing my gas right now. Running 96 octane at the moment. Started out with 100, then 98.
I just want the plugs to come out looking like they are supposed to. The HO engine, plugs looked great, all the time.
Maybe its has something to do with the iron heads.What want to do is get the engine warm. put in a new set of Autolights except have a NGK and Champion in cylinders 1 and 2.
Make a run with no burnout or tree lights and shut her off just past the stripe at full power, coast down to the turnaround and change 3 plugs. Come back to the pits and inspect them.
See if I can talk the track boss into it.

Maybe I can talk the track boss into