WTB thunderbolt overhead valve cover
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Jakekj
Topic author - Posts: 22
- Joined: Tue Feb 28, 2023 2:55 pm
- First Name: Ku21445rt
- Last Name: Jensen
- * REQUIRED* Type and Year of Model Ts owned: 1914 roadster
- Location: Brockton,ma
- Board Member Since: 2023
WTB thunderbolt overhead valve cover
Wanted thunderbolt valve cover for overhead conversion
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Mark Gregush
- Posts: 5370
- Joined: Sat Jan 05, 2019 1:57 pm
- First Name: Mark
- Last Name: Gregush
- * REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1948 F2 Ford flat head 6 pickup 3 speed
- Location: Portland Or
- Board Member Since: 1999
Re: WTB thunderbolt overhead valve cover
Wishing you good luck in your search, that is going to be a rare bird!
If you are going with the loss oil system, the Frontenac cover might work or like I did, original Cheverolet 1 piece rocker cover. Even out of the box, if using the Gern Thunderbolt cover and a pressure oiling system, the Chevrolet head needed to be machined around where the cover would seal and return oil system made to drain the wells.
If you have the Jern adapter plate, Olson Gaskets can make the head gasket if you need one. http://www.olsonsgaskets.com/
Also, here is a post that shows some of the work that can be done;
https://www.mtfca.com/discus/messages/29/25434.html
And even more;
https://www.bing.com/search?q=MTFCA+Jer ... cc=0&ghpl=
If you are going with the loss oil system, the Frontenac cover might work or like I did, original Cheverolet 1 piece rocker cover. Even out of the box, if using the Gern Thunderbolt cover and a pressure oiling system, the Chevrolet head needed to be machined around where the cover would seal and return oil system made to drain the wells.
If you have the Jern adapter plate, Olson Gaskets can make the head gasket if you need one. http://www.olsonsgaskets.com/
Also, here is a post that shows some of the work that can be done;
https://www.mtfca.com/discus/messages/29/25434.html
And even more;
https://www.bing.com/search?q=MTFCA+Jer ... cc=0&ghpl=
I know the voices aren't real but damn they have some good ideas! 
1925 Cut down pickup
1948 Ford F2 pickup
1925 Cut down pickup
1948 Ford F2 pickup
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frontyboy
- Posts: 369
- Joined: Tue Jul 23, 2019 3:16 pm
- First Name: dick
- Last Name: dock
- * REQUIRED* Type and Year of Model Ts owned: T sprint cars
- Location: locchoy wa
Re: WTB thunderbolt overhead valve cover
On my 28 Chev 4 cylinder sprint car I had a new Jern valve cover and it sorta fit the cylinder head machined surface. I used black gasket sealer and fashioned rubberized damn seal inside the oil galley up against the boss for the original valve cover to sit on.
I had no oil leaks and was able to oil rockers often and keep the engine clean.
frontyboy
I had no oil leaks and was able to oil rockers often and keep the engine clean.
frontyboy