head bolt washers

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bobt
Posts: 288
Joined: Tue Aug 13, 2019 5:43 am
First Name: Robert
Last Name: Thompson
* REQUIRED* Type and Year of Model Ts owned: 1915 touring 1926 roadster
Location: virginia

head bolt washers

Post by bobt » Mon Nov 15, 2021 6:38 pm

Should I use washers on the head bolts on a CAST IRON head? 1926 Roadster.

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Humblej
Posts: 1957
Joined: Sun Jan 06, 2019 12:23 pm
First Name: Jeff
Last Name: Humble
* REQUIRED* Type and Year of Model Ts owned: 1926 Canadian coupe, 1924 TT C-cab, 1924 runabout
Location: Charlevoix, Mi
Board Member Since: 2006

Re: head bolt washers

Post by Humblej » Mon Nov 15, 2021 6:56 pm

Ford did not. But after 100 years of bolts being tightened, I had to have my head bolt bosses refaced and I now use hardened head bolt washers, except for the headbolts at the coil box brackets.


jachady
Posts: 118
Joined: Fri Jan 11, 2019 11:16 pm
First Name: John
Last Name: Chady
* REQUIRED* Type and Year of Model Ts owned: 1924 Fordor
Location: Jefferson WI
Board Member Since: 2016

Re: head bolt washers

Post by jachady » Mon Nov 15, 2021 8:11 pm

I don't like the idea of using them but I did to make sure I didn't bottom out the bolts. I chased the threads and did my best to clear the bottoms of the holes but a couple were questionable depth-wise. One I had to double washer. I had more issues with head gasket sealing before I did all this, than I do now.

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A Whiteman
Posts: 1125
Joined: Sun Jan 06, 2019 3:36 pm
First Name: Adrian
Last Name: Whiteman
* REQUIRED* Type and Year of Model Ts owned: 1926 TT, 1923 Colonial Roadster, 1924 'Bullnose' Morris, 1925 'Bullnose' Morris, 1936 JD AR
Location: South Island, New Zealand

Re: head bolt washers

Post by A Whiteman » Tue Nov 16, 2021 4:55 am

I think it a combination of how many times the head has been planned (faced?) and how may times the bolts have been used (stretched), so washers do have a place to ensure you get proper pull down.

Clearing the holes is important, it surprises me how much gunk comes out of holes that spend most of their life containing the head bolt.

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