What plug gap should I run
11-24-2014, 07:08 AM
#4
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
could never tell a gain opening the gap
look elsewhere for power
look elsewhere for power
11-24-2014, 10:59 AM
#5
Melting Slicks
Member Since: Sep 2008
Location: Cherokee National Forest TN
Posts: 2,376
Likes: 0
Received 102 Likes
on
92 Posts
My Dad used to open the plug gaps .010 for "improved fuel economy" on his points & condenser cars. Don't know if it worked or not for better mileage however the cars would not start in the winter until the plug gaps were closed up.
NKG iridium plugs work well as plug & play units.
Side gapping standard spark plugs will help.
11-25-2014, 07:16 AM
#7
Le Mans Master
:
In my 383 Im running the stock gap of .035, but I went to a 1 step cooler plug because of the (10.5 to 1) compression Im running...If your running (11.5 to 1) compression then you should probably be running a cooler plug also.. The higher the compression, the cooler the plug should be.. I agree with most of the guys that there was no change noticed when I opened up the plug gap....
...WW
...WW
Last edited by WW7; 11-25-2014 at 07:32 AM.
11-25-2014, 05:19 PM
#9
Le Mans Master
I've had good luck with the NGK FR-5 "V-Power" plugs #7373, these are 1 step cooler then the stock plug.. My suggestion would be to run a set of these, then take a couple out after a few hundred miles to check them...If you do a search there are quite a few on here using this same plug that have close to the same compression as you...Depending on your setup you may end up running a cooler plug then this, maybe up to a number 7 heat range, but it's trial and error so take it slow and read your plugs.........Check to make sure these plugs fit your Procomp heads.....WW
Last edited by WW7; 11-25-2014 at 06:27 PM.
11-26-2014, 05:49 AM
#11
Le Mans Master
Here is the NGK spark plug tech article, everyone should know the things written in this 5 page article..It tells you how to read plugs, and the things that can occur if the plugs are to hot or to cold........WW
http://www.ngksparkplugs.com/tech_su...x.asp?mode=nml
.
.
.
...WWhttp://www.ngksparkplugs.com/tech_su...x.asp?mode=nml
.
.
.
Last edited by WW7; 11-26-2014 at 05:53 AM.
11-29-2014, 06:30 PM
#13
Melting Slicks
Thread Starter
I am currently running Accel copper core 416S (shorties) at stock gap... do you still recommend those NGK's?
Last edited by volkswagens-for-life; 11-29-2014 at 06:42 PM.
11-30-2014, 10:59 AM
#14
Le Mans Master
..To answer you question about plug gap...If you want to figure the widest plug gap you can run. Open the gap a little at a time , then when the motor starts running bad or missing, back off to the last gap where it ran good.......WW
Last edited by WW7; 11-30-2014 at 12:59 PM.
11-30-2014, 01:26 PM
#15
Melting Slicks
Thread Starter
I'm gonna pull some plugs next weekend and get a feel for their condition and then we'll see what heat range I need. What heat-range would a 416s be? Is the "6" the heat range you think?
11-30-2014, 05:50 PM
#16
Le Mans Master
Yes, the 416s is a number 6 heat range, the 414s is a number 4 heat range and so on..Don't forget with Accel plugs , the higher the number , the hotter the plug...You didn't answer my question, do you need shorty plugs because standard length plugs hit your headers???...WW
11-30-2014, 06:12 PM
#17
Melting Slicks
Thread Starter
Thank you for your help so far.
11-30-2014, 09:01 PM
#18
Le Mans Master
Your welcome , glad to help...The reason I asked about the plug length was because if you can use a standard length plug you would have a larger selection of plugs to chose from....