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Discussion Topic:
1940 V8 Spark Plugs
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DanD32 |
05-10-2021 @ 12:13 PM
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New Member
Posts: 102
Joined: Oct 2017
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There is A lot of good reading on the NGK web site about choosing the right plugs they make for alot of cars both preformence and stock styles also. Just another option if champtions or autolites are giving anyone problems or want to try something different.
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JayChicago |
05-09-2021 @ 6:38 PM
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Member
Posts: 492
Joined: Jan 2016
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DanD I checked my file and you are correct. I was wrong. I was going by memory, and I should know better than to do that, cuz I have CRS. NGK B6L standard heat range NGK B4L hotter
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DanD32 |
05-08-2021 @ 1:53 PM
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New Member
Posts: 102
Joined: Oct 2017
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Jay from what I have read on NGK plugs the lower the # the hotter the plug I run 4's and are burning great with A very mild cam and 2 strombergs with 41 jets I love my 53 flathead
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JayChicago |
05-08-2021 @ 7:06 AM
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Member
Posts: 492
Joined: Jan 2016
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40 Coupe: Thanks for doing that research. That all makes sense. Like most engineering things, there has to be a compromise. A larger gap may provide better ignition of the fuel charge. (may! Not needed in our low-compression engines) But a larger gap runs the risk the high voltage will find a path of lesser resistance elsewhere.
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40 Coupe |
05-07-2021 @ 8:17 AM
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Senior
Posts: 1685
Joined: Oct 2009
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Ford Service Bulletins for 38 and 39 list the plug gap to be 0.025" In a special letter from the branch to dealers and all service personal, in 1941 the gap was supposed to be 0.030" and back to the Service Bulletins for 1948 the gap was 0.025 to 0.028" Ford often changed specifications. I would use the latest Spec. of 25 to 28 All of these above Spec. are for the 85HP engine of 1938-1940.
This message was edited by 40 Coupe on 5-8-21 @ 4:30 AM
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trjford8 |
05-07-2021 @ 7:52 AM
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Senior
Posts: 4232
Joined: Oct 2009
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X2 TomO on the Autolites. I have used them in every flathead I have owned and never a problem..
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TomO |
05-07-2021 @ 7:45 AM
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Senior
Posts: 7264
Joined: Oct 2009
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I have driven many thousands of miles with Autolite plugs. They are just as good as any other plug that is made today.
Tom
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JayChicago |
05-06-2021 @ 6:35 PM
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Member
Posts: 492
Joined: Jan 2016
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“My mechanic installed NGK plugs, not sure which ones. Paul in CT” NGK-4 Or NGK-6 , which is a little hotter, may help if needed to burn off deposits.
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sarahcecelia |
05-06-2021 @ 5:32 PM
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Senior
Posts: 1194
Joined: Mar 2013
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Autolites can give you problems; even though they are a Ford product! Champions are the brand recommended by FORD!
Regards, Steve Lee
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sarahcecelia |
05-06-2021 @ 5:24 PM
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Senior
Posts: 1194
Joined: Mar 2013
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Thanks Kubes; OOPs; I thought they would gap the same as my '50 v8 at 32 thousandths.
Regards, Steve Lee
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