Sherman Sure Fire Twin Plug Head

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Tea_time_racer
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Sherman Sure Fire Twin Plug Head

Post by Tea_time_racer » Sun Jun 02, 2019 9:13 pm

I have unused Sherman Sure Fire twin plug head, great for a speedster project, or other T powered cars. $700 plus shipping
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babychadwick
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Re: Sherman Sure Fire Twin Plug Head

Post by babychadwick » Sun Jun 02, 2019 9:52 pm

Will you be at the endurance run?


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Tea_time_racer
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Re: Sherman Sure Fire Twin Plug Head

Post by Tea_time_racer » Sun Jun 02, 2019 9:57 pm

No I wont be, but will be at the LA roadster show on fathers day in June and the Long Beach Model T swap met in July


Tbz4u
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Re: Sherman Sure Fire Twin Plug Head

Post by Tbz4u » Sun Jun 02, 2019 11:39 pm

Trade ya for some. American wheel caps , buffalo caps


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Tea_time_racer
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Re: Sherman Sure Fire Twin Plug Head

Post by Tea_time_racer » Mon Jun 03, 2019 2:27 pm

Thanks for the offer, but at this time I want to sell this.


Mike Lebsack-Iowa
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Re: Sherman Sure Fire Twin Plug Head

Post by Mike Lebsack-Iowa » Mon Jun 03, 2019 3:13 pm

Hi.
What is the large hole in the rear center for? Mike


John bevardos
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Re: Sherman Sure Fire Twin Plug Head

Post by John bevardos » Mon Jun 03, 2019 3:22 pm

mike, its to add a temp sensor ---if wanted . John


babychadwick
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Re: Sherman Sure Fire Twin Plug Head

Post by babychadwick » Mon Jun 03, 2019 10:36 pm

Temp sensor or zinc electrode to prevent electrolysis


Dan McEachern
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Re: Sherman Sure Fire Twin Plug Head

Post by Dan McEachern » Mon Jun 03, 2019 11:23 pm

Interesting that the plugs are offset- I've seen a lot of Sherman heads and I don't recall ever seeing a twin spark with the holes offset like this one.

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kmatt
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Re: Sherman Sure Fire Twin Plug Head

Post by kmatt » Tue Jun 04, 2019 1:38 am

Dan, I noticed the offset spark plugs also. The plugs more back from the ports are intake, could it be for a little more cooling in the head to help with the incoming mixture not to detonate ? With the pipe plug hole at the back top of the head I have seen a cooling pipe added that runs to the front cooing outlet to help promote cooling flow in the back of the engine.


babychadwick
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Re: Sherman Sure Fire Twin Plug Head

Post by babychadwick » Tue Jun 04, 2019 8:07 am

My money would be on larger intake valves and the desire to place the plug directly over the valve.

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kmatt
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Re: Sherman Sure Fire Twin Plug Head

Post by kmatt » Tue Jun 04, 2019 3:09 pm

Yes Chadwick you are correct, the offset would help with bigger intake valves and port work. Have a good run with your mom's speedster on Sunday.


blgitn
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Re: Sherman Sure Fire Twin Plug Head

Post by blgitn » Tue Jun 04, 2019 9:33 pm

So; how much larger can you go with intake and exhaust valves?


blgitn
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Re: Sherman Sure Fire Twin Plug Head

Post by blgitn » Tue Jun 04, 2019 9:33 pm

And where can I read more about it?

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Mark Gregush
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Re: Sherman Sure Fire Twin Plug Head

Post by Mark Gregush » Tue Jun 04, 2019 9:58 pm

Roger you might want to move your question over to the forum. You would have a better chance of getting an answer there, more eyes.
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup


Topic author
Tea_time_racer
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Re: Sherman Sure Fire Twin Plug Head

Post by Tea_time_racer » Tue Jun 04, 2019 10:14 pm

Sold


Tbz4u
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Re: Sherman Sure Fire Twin Plug Head

Post by Tbz4u » Sun Jun 09, 2019 9:31 pm

Thats a nice head talk to jerrt sherman junior on oversize valves chad is right

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