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dannyboy20
10-29-2003, 04:06 PM
ok i am running 12 disks with my pipe and a 155 main jet. Checked the plug and its whitish.
Silverfox@C&DRacing
10-29-2003, 05:24 PM
Sounds like you need to run a bigger jet.
skemp
10-29-2003, 08:34 PM
I have said it before, and I'll say it again, do not rely on plug color. Not in this day and age at least. Pump fuels have many detergents and additives that can alter or eliminate color on the plug. I have seen reddish, yellow, and even green colored plugs from using varying types of race and pump fuels. A 155 should be fine if all you have is a pipe and filter. As long as the thing is running good and not backfiring or running hot, you should be set. The only surefire method of determining the tune of your motor is to test the air/fuel ratio at the exhaust with an O2 sniffer.
stupid driver
10-29-2003, 08:38 PM
Originally posted by skemp
I have seen reddish, yellow, and even green colored plugs .

i have yet to get my plug to look like some kind of christmas decoration. Just curious, what fuel is it that will do that. All i can seem to get my plug to look like is turd color. but thats a good thing :o
skemp
10-29-2003, 08:47 PM
The 110 at the local speedway turns it red. I put some gas in that a friend of mine had (I think Sunoco 112...?) and it turned it yellow. I have seen a greenish plug from using octane booster. Pretty crazy stuff. :) I know all the pump gas in my area burns pretty much clean on the plug.
skemp
10-29-2003, 08:48 PM
Oh yeah, the red and yellow color from the race fuels I use(d) is due to the dyes in the fuel.
stupid driver
10-29-2003, 08:56 PM
Originally posted by skemp
I know all the pump gas in my area burns pretty much clean on the plug.

same here. Before i started usin 50/50 race gas, i could never get a reading on my plug. It came out lookin nearly identical to when i would put it in.
dannyboy20
10-29-2003, 08:58 PM
well its running fine so i guess ill stick with what i have.
dannyboy20
10-29-2003, 08:59 PM
how will you know if its overheating ????
skemp
10-30-2003, 05:19 PM
Well, you will notice a lot of heat coming from the motor, and it will start to run crappy. You would probably notice it if it happened. I really don't think you are going to have a problem though. :)