Flathead Firing Order and 2 Carburetors - 460 Ford Forum
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post #1 of 26 (permalink) Old 05-16-2007, 05:30 PM Thread Starter
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Flathead Firing Order and 2 Carburetors

A couple of days ago at lunchtime I was changing the oil in my T Bucket. This car has a 262 cubic inch Mercury Flathead V8 engine with an Isky Max #1 cam and two Holley carburetors. So far it's been a great engine in the T bucket, I've driven it over 10,000 miles without any problems and with Mobil 1 oil it won't use a quart in over 3000 miles of driving.

Anyway, the car made me do some thinking about the Flathead firing order and I still wonder exactly what factors made Henry choose to do it that way. 15486372. What it does is fire the outside 4 cylinders and then the inside 4 cylinders. The inside 4 are fired in an X pattern. Question is, why would you do this?



In the Flathead engine there are 3 main bearings and I just wonder if Henry wanted to avoid firing two cylinders that were across from one another consecutively when they were both on the same side of and ajacent to the center main....

In the picture it's tough to see but on the Flathead engine there are only 3 exhaust ports. The firing order places the exhaust pulses 180 degrees apart on these ports as would the regular big block firing order which is probably the most common V8 firing order of them all(same as Chevy, Mopar etc). I just wonder what he had in mind... Cooling? The two cylinders that fire next to one another in the same bank are in the front of the engine on the right bank instead of at the rear on the left bank using the common firing order...






Supposedly Henry Ford had in his workshop examples of other V8's that were on the market at the time, I wonder what order's they used?

Did you know that on a Flathead cylinder number 1 is NOT the front cylinder on the engine? It's numbered like a Ford but the cylinders are laid out like a Chevrolet with the left front cylinder in the front! Odd.....

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post #2 of 26 (permalink) Old 05-16-2007, 05:41 PM
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Dave.....I'm guessing that Henry's aim was to address some quirky balancing issue in his head. My grandad used to tell me stories about Crazy Henry. Grampa Joe said that Henry was pretty much a genius, but he'd already "paddled his canoe halfway 'round the bend", so to speak. Gramps also told me (I don't know if this is true or not) that Henry would not allow his company to produce a V-6 engine, because in his mind, a V-6 could not be properly balanced. He insisted that his engines be built with cylinders in multiples of FOUR. Come to think of it....did Ford build a six while the old man had the reins? Any Ford historians out there? :?:

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post #3 of 26 (permalink) Old 05-16-2007, 05:59 PM
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By the way.......the car is cooler'n grits. 8) 8) Sometimes it takes an old fart to appreciate a nice flathead. It's easy to go faster, but you can't get cooler.

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post #4 of 26 (permalink) Old 05-16-2007, 06:24 PM
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Henry was off his rocker....wanted a X8...built dozens , both air and water cooled . Radial deals with four banks of two cylinders . The V8 was by default .
Ford started out with 60* experimental V8 , but it vibrated so badly that he soon went with the standard 90* configuration . The firing order ? I'm sure one of his engineers did that while he was not looking or it was just dumb luck . One sharp guy he was , that let his ego and age do him in....we all should be mindfull of this....I try to every day . After all , what's the matter with having people that work for you that know more that we do about certain things

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post #5 of 26 (permalink) Old 05-16-2007, 06:31 PM
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Alright, alright......Who the hell knows more than we do???????? :lol:

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post #6 of 26 (permalink) Old 05-16-2007, 06:37 PM
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Quote:
Originally Posted by Maverick
Alright, alright......Who the hell knows more than we do???????? :lol:
Wait.......I know........A ladies' shoe salesman!! :lol:

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post #7 of 26 (permalink) Old 05-16-2007, 06:38 PM
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I can not belive that you did not get excited about the "radial" thing...being the airplane guy you are

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post #8 of 26 (permalink) Old 05-16-2007, 06:41 PM
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I did....but I was too ashamed to let you know it. This is a V-8.....and family oriented forum.

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post #9 of 26 (permalink) Old 05-16-2007, 06:43 PM
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Yeah, that's like major modification of carburetors, some people ask me if I will build them. To that I tell them I can't be an expert in everything...little lone anything. I say my cup will only hold so much and it's almost full now, so I have to be carefull how much more I put in it. LOL!

Isn't the double firing order swap on the BBC that is often used as of late the same as the old flathead deal?

By the way Dave, I'm not quite old enough to really appreciate the flathead but, they are cool and yours is certainly right in there. I wouldn't quite call it cool as grits since I'm no fan of grits, unless of course they have milk and sugar on them.

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post #10 of 26 (permalink) Old 05-16-2007, 06:49 PM
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By the way, Lem...round motors are completely cool but they make for really crappy areodynamics in a drag car. Otherwise, I might give one a try. :lol:

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post #11 of 26 (permalink) Old 05-16-2007, 07:07 PM
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Quote:
Originally Posted by Maverick
By the way, Lem...round motors are completely cool but they make for really crappy areodynamics in a drag car. Otherwise, I might give one a try. :lol:
Kind of like a round engine in a '32 Ford

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post #12 of 26 (permalink) Old 05-16-2007, 07:10 PM
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A '32 Ford Tri-Motor?

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post #13 of 26 (permalink) Old 05-16-2007, 07:24 PM
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Your conversations of Radial Engines reminded me of this picture of a Radial Enging Motorcycle. It is pretty cool.
Ken

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post #14 of 26 (permalink) Old 05-16-2007, 07:34 PM
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If it's all the same to you, I'll let somebody else kick start it for me. :roll:

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post #15 of 26 (permalink) Old 05-16-2007, 08:21 PM
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Dave M. That's a very cool and pretty engine you have

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