|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
|
02-10-2022, 12:18 PM | #1 |
Senior Member
Join Date: Mar 2014
Location: Salem, Ohio
Posts: 1,058
|
Iron OHV prototype
Since the first aluminum OHV head tested beyond expectations, an iron version is being pecked away at as time permits so it can be tested soon.
I need to get cracking on these, as I have a dozen people wanting one, including some overseas customers. Tod |
02-10-2022, 12:30 PM | #2 |
Senior Member
Join Date: May 2010
Location: Santee Calif.
Posts: 515
|
Re: Iron OHV prototype
Make that a bakers dozen
|
Sponsored Links (Register now to hide all advertisements) |
|
02-10-2022, 01:48 PM | #3 |
Junior Member
Join Date: Jan 2016
Posts: 17
|
Re: Iron OHV prototype
Looks great from here! Keep us posted please.
|
02-10-2022, 02:06 PM | #4 |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
|
Re: Iron OHV prototype
what is the advantage of the Iron over the aluminum?
|
02-10-2022, 04:16 PM | #5 |
Senior Member
Join Date: May 2012
Location: Queensland, Australia
Posts: 10,436
|
Re: Iron OHV prototype
Iron OHV prototype - Tod |
02-11-2022, 06:02 PM | #6 |
Senior Member
Join Date: May 2010
Location: now Kuna, Idaho
Posts: 3,790
|
Re: Iron OHV prototype
Sponsored Links (Register now to hide all advertisements)
Iron also resists corrosion far better than aluminum. Back in the '30's, Ford built a lot of flatheads with aluminum heads, but most guys ran plain water in warm weather so the heads soon rotted and were replaced with iron. It's interesting the aluminum heads were rated higher compression than the iron heads yet HP was the same at 85 (in most cases). |
02-10-2022, 05:43 PM | #7 |
Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,911
|
Re: Iron OHV prototype
Very nice Tod. What type of valve train (rocker arms, springs, retainers, etc) would you use with your head?
Almost looks like a Y-Block rocker rail would fit... Last edited by Y-Blockhead; 02-10-2022 at 05:49 PM. |
02-10-2022, 07:00 PM | #8 | |
Senior Member
Join Date: Mar 2014
Location: Salem, Ohio
Posts: 1,058
|
Re: Iron OHV prototype
Quote:
Valve train is all LS Gen 3 beehive Springs keepers retainers and valves. This head will have 1.6:1 rockers. The rocker arm assemblies are roller rockers with a shaft and stand set up and made by rocker arm unlimited in Redding The push rods are made by Smith brothers in Oregon. The idea is to supply finished head kits with all the parts necessary. Tod Last edited by Tod; 02-10-2022 at 07:05 PM. |
|
02-10-2022, 06:38 PM | #9 |
Senior Member
Join Date: May 2010
Location: Portland OR
Posts: 6,358
|
Re: Iron OHV prototype
"what is the advantage of the Iron over the aluminum?" Thermal expansion rates would be about the same with both being cast iron, might be one.
__________________
I know the voices aren't real but damn they have some good ideas! |
02-10-2022, 06:54 PM | #10 |
Senior Member
Join Date: May 2010
Location: midlothian illinois
Posts: 448
|
Re: Iron OHV prototype
The quality of the finish on that casting is truly amazing. When designing this head, were you able to address some of the porting issues that the originals had, the thickness of the deck for head gaskets, and depending on your rocker shaft location for the
towers, what rocker arm ratios do you think might work with this set up? Thanks |
02-10-2022, 09:33 PM | #11 |
Senior Member
Join Date: May 2017
Location: Denver Area
Posts: 433
|
Re: Iron OHV prototype
This sounds fantastic! I sure wish I could play with this setup. Best of luck to you and all who can take advantage of it.
|
02-11-2022, 05:35 PM | #12 |
Senior Member
Join Date: May 2010
Location: Ohio
Posts: 819
|
Re: Iron OHV prototype
Tod, do you sell heads and your other items to individuals or only wholesale to vendors?
|
02-11-2022, 05:52 PM | #13 | |
Senior Member
Join Date: Mar 2014
Location: Salem, Ohio
Posts: 1,058
|
Re: Iron OHV prototype
Quote:
Some builders, like Steve Becker tend to buy heads 6-8 at a time, but mainly it is individuals. I have a builder that ordered 5 iron OHV heads and several blocks, 3 main and 5 main, as well as crankshafts for the 5 main blocks. The 3 main cranks with B journals is not ready yet or I would be selling some of those also. More runs of heads are under way right now, Winfield and Stock Top Crow Foot 7:1 heads. Tod |
|
02-11-2022, 09:14 PM | #14 |
Senior Member
Join Date: May 2010
Location: Santa Rosa, CA
Posts: 1,282
|
Re: Iron OHV prototype
What 40 Deluxe said about aluminum and cast iron heads and heat transfer. The legendary Ed Winfield reputedly said to the effect to use aluminum if you want to boil water (in your cooling system) use cast iron if you want power.
|
02-12-2022, 01:01 AM | #15 |
Senior Member
Join Date: Feb 2015
Location: Australia
Posts: 1,984
|
Re: Iron OHV prototype
I thought Winfield said that aluminum was only good for cooking.
https://www.fordbarn.com/forum/showp...73&postcount=9 |
02-12-2022, 04:20 PM | #16 |
Senior Member
Join Date: Nov 2011
Location: Sonoma, CA.
Posts: 1,508
|
Re: Iron OHV prototype
Hey Tod,
Whats the chance that when your fooling around with these heads you try out a more modern type quench combustion chamber It should really help wake one of these things up. |
02-13-2022, 07:29 AM | #17 | |
Senior Member
Join Date: Mar 2014
Location: Salem, Ohio
Posts: 1,058
|
Re: Iron OHV prototype
Quote:
If I make any changes it won't be any time soon. I am very busy as it is and design and process changes would be costly and and perhaps not worth R.O.I. The aluminum version turned out better than I had hoped, so I'm not inclined to any nominal alterations at the moment. I have quite a few of these to make already as they are. Tod |
|
02-13-2022, 11:24 AM | #18 |
Senior Member
Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,069
|
Re: Iron OHV prototype
One of the problems with making this a higher performance head is the geometry.
You can modify the chamber to add squish but then realize the valves need attention. At some point, the bottom end needs serious attention, more money than most want to spend. And then, the car itself become the limiting factor. It looks good from what we can see, best of luck, John
__________________
As Carroll Smith wrote; All Failures are Human in Origin. |
02-13-2022, 12:34 PM | #19 |
Senior Member
Join Date: Feb 2011
Location: NNNNNNNNJJJJJJJJJJ
Posts: 6,839
|
Re: Iron OHV prototype
Wayne, 40 deluxe answers your question well. I had a 1937 cord and the water ate a hole right through the passenger side head, from sitting.
The one advantage of the aluminum head is it is lighter in weight. also todays metallurgy is far more immune from aluminum rot. If not, we would have most newer cars rotting out and overheating. |
02-14-2022, 08:30 PM | #20 |
Senior Member
Join Date: Mar 2014
Location: Salem, Ohio
Posts: 1,058
|
Re: Iron OHV prototype
Coming along.
Tod |
|
|
Sponsored Links (Register now to hide all advertisements) |
|