|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
08-21-2017, 08:08 PM | #21 |
Senior Member
Join Date: May 2010
Location: Southern Upstate New York
Posts: 1,160
|
Re: OHV for Model A engine
Does the Cook OHV run with a reconfigured cam/valve setup? Looks like the posted photos show the intake valves being smaller then the exhaust valves. Something's not right. Why go through all that modification and screw up the valve sizes.
__________________
AL in NY |
08-21-2017, 08:36 PM | #22 |
Senior Member
Join Date: Oct 2010
Location: Hancock, MA
Posts: 2,779
|
Re: OHV for Model A engine
yes but what cam grind??
__________________
Short URL: http://smu.gs/14g7eDW |
Sponsored Links (Register now to hide all advertisements) |
|
08-22-2017, 11:14 AM | #23 |
Senior Member
Join Date: Jun 2010
Location: Temecula, CA
Posts: 4,085
|
Re: OHV for Model A engine
Does the Cook OHV run with a reconfigured cam/valve setup? Looks like the posted photos show the intake valves being smaller then the exhaust valves. Something's not right. Why go through all that modification and screw up the valve sizes.
As with any A/B engine, the stock cam is in the block so any stock or performance re-grind can be used. Most run re-grinds, why would you put a stock cam in a 4-port? My current turbo engine runs a 280* cam, I have run as much as 320* in previous configurations. Cooks originally had both valves the same size, this one and mine now have larger intakes than exhausts. They originally had 1928 Buick rocker arms, 1.25:1 ratio, as did Cragars. Last edited by Jim Brierley; 08-22-2017 at 11:20 AM. Reason: addition |
08-22-2017, 11:21 AM | #24 |
Senior Member
Join Date: Jun 2010
Location: Temecula, CA
Posts: 4,085
|
Re: OHV for Model A engine
hardtimes, 7:1 or 7:1 or even 7:1, your choice.
|
08-22-2017, 01:56 PM | #25 |
Senior Member
Join Date: Oct 2010
Location: Hancock, MA
Posts: 2,779
|
Re: OHV for Model A engine
Sorry, I meant what cam grind do you recommend for your head, if running 1.7 intakes, headers and dual 81's?
__________________
Short URL: http://smu.gs/14g7eDW |
08-22-2017, 04:52 PM | #26 |
Senior Member
Join Date: May 2010
Location: Southern Upstate New York
Posts: 1,160
|
Re: OHV for Model A engine
Sponsored Links (Register now to hide all advertisements)
__________________
AL in NY Last edited by AL in NY; 08-23-2017 at 08:56 AM. |
08-22-2017, 06:12 PM | #27 |
Senior Member
Join Date: May 2010
Location: South California
Posts: 6,188
|
Re: OHV for Model A engine
|
08-23-2017, 08:24 AM | #28 | |
Senior Member
Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,054
|
Re: OHV for Model A engine
Quote:
In the pics shown, the valves are the same size. It may look smaller but no they are not. The period when these heads were designed did not use the larger intakes. In fact, they still used the cartridge fire design for the spark plugs. Most of the designs still followed the large chamber without any squish area. The Cook design I think was a good place to start as it attempts to create turbulence. John
__________________
As Carroll Smith wrote; All Failures are Human in Origin. |
|
08-23-2017, 05:22 PM | #29 |
Senior Member
Join Date: May 2010
Location: Reseda, Calif.
Posts: 2,188
|
Re: OHV for Model A engine
Thanks for the info John. I think I forgot to show you the riley 4 port I had in the trunk of my roadster at the Chatsworth swap meet. I will have to come by and let you take a peek at it. Mark.
|
08-25-2017, 12:35 PM | #30 |
Senior Member
Join Date: May 2010
Location: South California
Posts: 6,188
|
Re: OHV for Model A engine
LOTS of George Riley imitations out there, but only cast iron originals by George !
! |
08-25-2017, 02:05 PM | #31 |
Senior Member
Join Date: May 2010
Location: Van, Texas
Posts: 1,122
|
Re: OHV for Model A engine
Here are pictures of the engine I refered to in my first post.
Cook OHV with twin strombergs. 39 transmission and Laycock Overdrive. She is butiful. Still working on a front brake issue and have not driven it yet. |
08-26-2017, 01:02 PM | #32 |
Senior Member
Join Date: May 2010
Location: South California
Posts: 6,188
|
Re: OHV for Model A engine
Hey Ken,
Thanks for sharing. There's a LOT going on in there, eh ! |
08-26-2017, 01:15 PM | #33 |
BANNED
Join Date: Apr 2017
Location: Lower Left Coast
Posts: 469
|
Re: OHV for Model A engine
Ya know, there is just something about a Swagelok plumbed car that makes me wonder why you would go to the AN fitting for the fuel when Swagelok has the SS braided lines that they will cut to fit? They also have off the shelf lengths and you just add your ferule to.
Definitely a sweet ride and I really hope you get that front brake problem fixed. If you have serious problems, why not give Randy Gross a jingle, he is one smart cookie. He sure knows his Model A brakes and got my Beast stoppin swell. Hey, what/who's water pump is that, and what is it off of? Looks like something from a tractor or stand alone piece of farm equipment.
__________________
Before Walmart you had to buy a ticket to the fair to see a bearded lady! |
08-26-2017, 05:07 PM | #34 | |
Senior Member
|
Re: OHV for Model A engine
Quote:
I saw a video on YouTube that Charlie Yapp made of his Roof 101 Cyclone OHV conversion for the Model A engine. He had a similar water pump and he said it was a Model T accessory pump that works with the stock oil filler tube. https://youtu.be/gxH-46x0tdw David Serrano |
|
08-26-2017, 08:10 PM | #35 | |
Senior Member
Join Date: May 2010
Location: South California
Posts: 6,188
|
Re: OHV for Model A engine
Quote:
What I'd like to know is...what is that gen/alt looking thing and what's it from ? Last edited by hardtimes; 08-26-2017 at 08:12 PM. Reason: .............. |
|
08-27-2017, 12:05 AM | #36 |
BANNED
Join Date: Apr 2017
Location: Lower Left Coast
Posts: 469
|
Re: OHV for Model A engine
That is a Denso 35amp alternator. You can get them with self energizing that only require the one wire to the battery.
https://www.amazon.com/ALTERNATOR-Eq...ent+A28+Engine
__________________
Before Walmart you had to buy a ticket to the fair to see a bearded lady! |
08-27-2017, 02:00 AM | #37 | |
Junior Member
Join Date: Aug 2011
Location: Long Beach, California
Posts: 26
|
Re: OHV for Model A engine
Quote:
Years ago my dad worked with an older mechanic [they were both the same age] his name was Bill LaRosa [or Rosie] and his son Mike worked for the Ford plant in Pico Rivera. I remember going to his house as a youngster and he had 4 bangers and OHV heads stacked in his garage. He also had a pre WW2 sprint car with a 4 port Riley. He didn't care too much for Strombergs but like a lot of the older generation he had a liking for Winfield carburators. Do you know if he is still around or what has happened to his 4 bangers and other rare equipment he had? I think he had about every "rare" head made back before the war. Thanks, Bruce [Offy 220] |
|
08-27-2017, 03:35 AM | #38 | |
Senior Member
Join Date: Sep 2010
Location: South Coast NSW Australia
Posts: 2,596
|
Re: OHV for Model A engine
Quote:
They are worse than top choppers of pristine bodies.. When they die, they THINK their junk will end up in a museum. In reality, it will go in a skip bin (dumpster to you Yanks) for sure. If you cannot or will not use when you are alive, then spread it around to us who care about it now in the present.... In 30 years our fossil fuelled cars will be banned, All electric.....we will all be dead, and the Model A will be but a memory. |
|
08-27-2017, 08:25 AM | #39 |
Senior Member
Join Date: May 2010
Location: Johnstown, PA
Posts: 342
|
Re: OHV for Model A engine
Hi Ken, That is quite a piece of work. What a great looking truck! Good luck with those front brakes, looks like it will be a blast to drive.
|
08-27-2017, 11:11 AM | #40 |
Senior Member
Join Date: Jun 2010
Location: Temecula, CA
Posts: 4,085
|
Re: OHV for Model A engine
Bill LaRosa is still around and active, restoring his engines, etc. Mike still lives at home and together they make the necessary castings, etc., to complete the engines. You should see hi collection now!
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|