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Old 07-20-2021, 04:35 PM   #1
Tod
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Default Stock top crow foot head, again

The 3rd sample casting proved even better than the first 2, which are in the hands of builders. I made 4 more prototypes and here is the first one of those machined. These are around 7:1 (just a bit over).


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Old 07-20-2021, 05:01 PM   #2
mercman from oz
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Default Re: Stock top crow foot head, again




Very nice looking Heads. Well done.
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Old 07-20-2021, 09:20 PM   #3
updraught
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Default Re: Stock top crow foot head, again

I was wondering how you could have a 7 to1 without a spark plug recess ...
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Old 07-20-2021, 10:33 PM   #4
alexiskai
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Default Re: Stock top crow foot head, again

Underside of my Winfield 7:1, for comparison.
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Old 07-21-2021, 07:21 AM   #5
deuce5wndw
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Default Re: Stock top crow foot head, again

Very nice work Tod!!
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Old 07-21-2021, 07:22 AM   #6
Tim Ayers
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Default Re: Stock top crow foot head, again

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Looks great, Tod.
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Old 07-21-2021, 03:30 PM   #7
Tod
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Default Re: Stock top crow foot head, again

All 4 of the next samples have been machined and they came out nice. I think all 4 of them are already sold, but I will be making a batch for the next buyers as soon as I have at least a dozen to make.


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Old 07-21-2021, 11:15 PM   #8
GeneBob
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Default Re: Stock top crow foot head, again

This is very interesting, (and cool). I have not seen that shape before but I don't know a lot about the different shapes, just that there are several. Can you explain the advantages of this combustion chamber compared to others? Thanks.
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Old 07-22-2021, 05:08 PM   #9
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Default Re: Stock top crow foot head, again

Liking that Tod.
The stock 14.9hp head has the sparkplug recess like that.
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Old 07-22-2021, 05:45 PM   #10
Tod
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Default Re: Stock top crow foot head, again

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Liking that Tod.
The stock 14.9hp head has the sparkplug recess like that.

It is a proven chamber. I used this on my B heads.


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Old 01-05-2022, 12:55 PM   #11
Mikes Garage
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Default Re: Stock top crow foot head, again

How can I order one of these heads?
( price and estimated delivery date)
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Old 01-05-2022, 01:04 PM   #12
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Default Re: Stock top crow foot head, again

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How can I order one of these heads?
( price and estimated delivery date)
I would guess the best way would be to contact Todd via PM or email thru Ford Barn?
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Old 01-05-2022, 03:23 PM   #13
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Default Re: Stock top crow foot head, again

The squish area, where the piston comes close to the head, is what give a puff of air that creates the turbulence. The more turbulence the better the performance. The trick is to not cut off the flow of air into the cylinder by the head. Plus, the more centralized the spark plug, the faster the air/fuel will burn which helps performance. I would guess that Tod's head and the Winfield have been designed with these things in mind. The flathead Briggs and Stratton heads were a good design.
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Old 01-05-2022, 05:01 PM   #14
wwirz
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Default Re: Stock top crow foot head, again

Is the head made from gray iron (class 30/40) or ductile iron (60-40-18, etc.)?? Nice looking casting and machining. Are you planning on leaving the foundry logo on the head as well as HT #?
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Old 01-05-2022, 08:52 PM   #15
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Default Re: Stock top crow foot head, again

Since I am a "Junior Member", I have apparently not earned the right to send personal messages or emails
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Old 01-05-2022, 08:56 PM   #16
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Default Re: Stock top crow foot head, again

Quote:
Originally Posted by Y-Blockhead View Post
I would guess the best way would be to contact Todd via PM or email thru Ford Barn?
Since I am A "Junior Member" I apparently have not earned the right to send personal messages or email. Therefore I am unable to contact Tod.
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Old 01-05-2022, 10:25 PM   #17
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Default Re: Stock top crow foot head, again

Quote:
Originally Posted by nkaminar View Post
The flathead Briggs and Stratton heads were a good design.
They were the ultimate for efficiency which equates to maximum hp and gas mileage.
Maximum available transfer area with minimum depth and ideal plug location for fastest flame front speed to full chamber.
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Old 01-05-2022, 10:43 PM   #18
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Default Re: Stock top crow foot head, again

Hello Tod, yes the Model B 7.1.I received from you last year performs realy well I love it.
Cheers Ross in very warm Mangawhai NZ
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Old 01-06-2022, 08:07 AM   #19
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Default Re: Stock top crow foot head, again

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They were the ultimate for efficiency which equates to maximum hp and gas mileage.
Maximum available transfer area with minimum depth and ideal plug location for fastest flame front speed to full chamber.
It would be interesting to compare that to the Harley Davidson racing KR750 flatties, which have a similar reputation.
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Old 01-06-2022, 09:02 AM   #20
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Default Re: Stock top crow foot head, again

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Since I am A "Junior Member" I apparently have not earned the right to send personal messages or email. Therefore I am unable to contact Tod.

Mike,


I sent you a private message. I do not spend much time on Ford Barn these days.



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