|
Spark Plug Gap
Hello all,
Question regarding spark plug gap. The motor is a side oiler 473 stroker built by Garrett Machine, runnnig an MSD ignition system. I just purchased the car (1,365 miles) and want to service the motor. The plugs are Motorcraft AGSP 32C's. What should the gap be on these plugs? I know with a hot ignition system you can run a wider gap. I haven't measured the gap on the old plugs, but they look overly wide. Any information would be greatly appreciated. Regards, Anthony |
.035" to .040"
|
Yes, you can run a wider gap, but higher compression doesn't need big gaps.
Big gaps are for stock lean burn engines so they don't misfire up to 5000 or so. .035 -.040 is a good rule of thumb for a street engine. The spark will jump at the shortest path to ground, wider gaps encourages crossfire, lead leakage, ignition coil failure etc. Have a look at some racing engines, they run as small as .018. |
I use autolite 3924 and gap is set at .043". With an MSD ignition you can really open up the gap.Been working great for years.
|
Spark Plug Gap
Thanks to all for the information regarding spark plug gap. God Bless America!
Regards, Anthony |
| All times are GMT -7. The time now is 10:55 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: