Yellow Bullet Forums banner
1 - 3 of 3 Posts

·
Banned
Joined
·
18,113 Posts
How much does the timing line get affected by running colder plugs? If he is running 36 total now and pulls 15 as a very safe starting point, what range plug would he then use? I would think he has something like a -9 NGK in there now. Go down to a -10? What if he went to a -11 with the same timing as the -10, does the line move back towards the end of the strap (away from the base?).

Just trying to figure-out this heat range / timing line stuff myself.....
 

·
Banned
Joined
·
18,113 Posts
The way I do this I want as W I D E of a window as possible!!!
What is the disadvantage of running too cold of a plug? Can't clean-off the deposits from idling around, driving through the pits, etc...... Can those deposits cause a problem? I've read that those deposits can get so hot that they can short-out a plug, but I think that's an old wives-tale........ What does anyone think of that? Any truth to it or BS?
 

·
Banned
Joined
·
18,113 Posts
I decided to make one nitrous pass first thing this morning just to move things around on a qualified ladder on one of the classes I race in. My plugs were nasty! Should have put in fresh plugs first, but I wasn't looking at setting a record or anything, just wanted to qualify in a different spot on the ladder. Anyway......... these plugs looked shot before the pass, gap was, who knows, it was pretty huge! Digital 7's eat non-resistor plugs like a kid eating candy! Had maybe 25 passes on them. Gap was probably .050 on them. Looked like they had 100 passes on them too. Car picked-up .9 and 10 mph and ran flawlessly on a .055 jet (big shot plate).

I was expecting less and not a clean pass knowing what the plugs looked like before the run. After the run, they were still nasty-looking! They did not clean-up at all with the extra heat. Ran the rest of the day on motor and car was perfect, until the storm came by! We ran for cover. Our tower got hit by lightning!

I'll be buying some sets of -10's and do a little testing next weekend and see what I can do.
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top