Joined: Apr 15, 2005 Posts: 162 Location: San Diego CA
Posted: Sat Nov 15, 2014 10:35 pm Post subject: Spark plug type
I found some spark plugs in a box of stuff I bought and didn't know they were in there. This is the part number Ms35905-2 What are they for?
I looked at my M38a1 and I have MS35905-1 plugs in it, which is probably what was sold to me when I requested them years ago from a parts dealer.
I cant tell what is in my M37, they are so rusty crusty outside that its impossible to tell. _________________ "Those who enjoy freedom must endeavor to preserve it"
Joined: Apr 15, 2005 Posts: 162 Location: San Diego CA
Posted: Sat Nov 15, 2014 11:17 pm Post subject:
Yeah darn I knew I should have wrote it down to bring in to the laptop.
Its the 35909-2
That chart even has the same numbers AR 5s and 7s that were on these and the ones in my jeep.
I read the article and I now understand why you would go to a cooler plug with horsepower engine upgrades, but...
What would be a benefit for the military in a stock M38a1 or M37 to go to a warmer or cooler plug? IE why did the military have them? Operating Climate?
What is correct for the typical M38a1 and M37? _________________ "Those who enjoy freedom must endeavor to preserve it"
The correct plugs are listed in the service manuals for both trucks. If your truck starts using a wee bit of oil and fouls plugs often then you would switch to a hotter plug.
I have a plug chart posted in my photo album. The primary plug for the M38 & the M37 is the Autolite 2243. For the M38A1 the Auto-lite 2245
My M38 has 2243's in it as does my M37. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
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