4th main ?

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Dan Hatch
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Joined: Tue Jan 08, 2019 7:31 pm
First Name: Dan
Last Name: Hatch
Location: Alabama

4th main ?

Post by Dan Hatch » Sun Nov 09, 2025 8:39 am

Yesterday I was pouring about a dozen 4th mains to bore out. I came across about 3 that had no oil hole in them. Were these early ones before Ford found out they needed the oil hole?
Think I have seen one more that I remember.
Inquiring minds want to know. Dan


Gene_French
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Joined: Tue Jan 08, 2019 9:58 am
First Name: Gene
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* REQUIRED* Type and Year of Model Ts owned: 1926 Roadster pkup.
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Board Member Since: 2014

Re: 4th main ?

Post by Gene_French » Sun Nov 09, 2025 3:23 pm

Dan:
i have poured several hundred ball caps ( 4th main) ... i have noticed 4 common variations ... no oil hole , 1 oil hole ( some of which had Ford embossed on spherical section ) , 2 oil holes and 4 oil holes ... the only ones with "Ford" embossed were the 1 oil hole ... possibly genuine Ford replacements for dealer use?gene french

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