BIG THANK YOU TO Ol`Ron

[HotRodmicky]

Ol`Ron sold me a 3 3/8 x 3 5/8 rotating assembly for a Flathead
and went the extra mile to build a wodden box because we had
to ship it to Germany.

Recieved the box yesterday and i`m VERY pleased

THANKS RON !!!!!!!!!!!!

I already have a block , heads and an intake.

Still have to choose a cam

I will start with the project in January

The reason behind it is that it is nearly "squared bore/stroke"
It will be build to make alot of RPMs

Michael

[Walt Dupont--Me.]

Hey Ron, how was the 3-5/8 crank made? Was it a destroked 3-3/4? Could that be done by just grinding the crank to 2in.? Who made the pistons? Could you use 21A rods? Boy, that's a lot of question marks. Walt

[Ol' Ron]

I'm supprised it took so long to get there. Potvin 400 might work?

[Ol' Ron]

You got it right the first time. The pistons were Edelebrock, I think the assy was a few years old. Had the crank Magged and polished, checked oK. It was omeof those 53 shell molded ones.

[HotRodmicky]

Ron,
it sat at my friends house (270 miles away) for so long.

I will ask you some question on porting if you don`t mind :-)

Michael

[Ol' Ron]

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Mike Bishop has a series of photos on how he ports and relieves an engine that might be interesting to everyone. In my casr I don't inlarge the entrance to the port very much, however opening up the area between the port and bowl can be frustrating. I would use a center exhaust devider and square the end ports. Wish I could post pics. It would be alote easier.
Ron. Try and find a 52-3 block that does not have hardened incerts. This will make it easier to do your bowl work. considering the fact you have a small displacement engine I'd use Manly superflow 1.625 valves with a 20 deg undercut..
Good luck
Ol' Ron

[JM 35 Sedan]

Originally Posted by Ol' Ron

Mike Bishop has a series of photos on how he ports and relieves an engine that might be interesting to everyone. In my casr I don't inlarge the entrance to the port very much, however opening up the area between the port and bowl can be frustrating. I would use a center exhaust devider and square the end ports. Wish I could post pics. It would be alote easier.
Ron. Try and find a 52-3 block that does not have hardened incerts. This will make it easier to do your bowl work. considering the fact you have a small displacement engine I'd use Manly superflow 1.625 valves with a 20 deg undercut..
Good luck
Ol' Ron

Ol' Ron, I would really like to see those Mike Bishop pics. If you could email them to me I would post them here.
I remember Mike making a post on the old Fordbarn showing us a very nice rotating engine stand that he made and how he was porting and relieving a FH block. He was planning to post a complete tech guide on how he was doing everything but unfortunately one of the well known motor gurus from the south east jumped in and belittled him about what/how he was doing his relieving and he never reposted anything on this subject or any other subject again. What a shame.

[jdl]

Is this the one your looking for ?

http://www.flatheadv8.org/bishop/porting1.htm

[JM 35 Sedan]

Originally Posted by jdl

Is this the one your looking for ?

http://www.flatheadv8.org/bishop/porting1.htm

That is one that Mike Bishop did on porting and is listed in the 32-53 Flathead Techno Files. He was also doing one on relieving with a FH block mounted on a very nice turning engine stand that he made. I never did see a final on that and I'm not sure he ever finished writing it.

[jdl]

This link is from the HAMB awhile back, some nice pics and porting info.

http://66.154.44.164/forum/showthread.php?t=420484

[Ol' Ron]

Well this will get you started, I don't agree with everything posted here , but most of it. A flow bench, can be very helpfull.

[HotRodmicky]

Hi Ron,
send the pics via email someone (me for example) and we post them here
I would like to see them
Michael

[xxf_mike_xf]

Originally Posted by Ol' Ron

Well this will get you started, I don't agree with everything posted here , but most of it. A flow bench, can be very helpfull.

Hi Ron, regarding flow benchs, do you have any opinions on a home made rig? For example:

http://www.ag.auburn.edu/users/parme...es/flowbench2/

[Ol' Ron]

If you read my book, you'll know I built one of my own to do some testing. I could not measure in CFPM so I gad to use percentages. Years later I was fortunate enough to have a professional unit for about 6 months. If you use the results as a compairson to change, you'll be OK. This looks like a nice unit and could be useful. I'd like a set of plans just to look over, can you send me a copy? Ol' Ron

[Vergil]

I bet this looks familiar doesn't it Ron?
Thanks for sharing it.

Vergil

[xxf_mike_xf]

Originally Posted by Ol' Ron

If you read my book, you'll know I built one of my own to do some testing. I could not measure in CFPM so I gad to use percentages. Years later I was fortunate enough to have a professional unit for about 6 months. If you use the results as a compairson to change, you'll be OK. This looks like a nice unit and could be useful. I'd like a set of plans just to look over, can you send me a copy? Ol' Ron

Hi Ron, thanks for the reply, I will refer back to your book. Unfortunately I dont have the original magazine coverage of the flow bench build, Iam on the hunt for it. Although if you like I can print and send the linked article to you via snail mail.
I have some other links to home made rigs and there are some youtube videos demonstrating their performance. Let me compile those and I'll send those via personal message.

I think a device that could compare changes would be great, and better than nothing at all

[Ol' Ron]

Don't go to too much trouble, I don't see too well so it was just curosity. I would like the Utube vidio tho.

[xxf_mike_xf]

Hey Ron, getting a print to you wont be a problem, assuming the printed version can be read! Have you got a handle on how to use this message boards "Personal Messaging" system yet?

Here are a couple links to the flow bench videos I had mentioned. One is of the assembly, the other is the bench in operation. I havent seen the videos for some time but taking a second look it appears they were created to showcase hardware and software that helps with calculations. Pretty neat stuff.

Assembly:
https://www.youtube.com/watch?v=Ydtvb...eature=related

Operation:
https://www.youtube.com/watch?v=fLrDj...eature=related

Company (Flow Performance):
http://flowperformance.com/

[Ol' Ron]

I've seen these. My first one was a Manometer style. Homemake from PVC pipe a d a water ramp. Place a fixture into the cylinder from the bottom. connect the manometer between the port and the vacuum and read the differance. I used a piece of plywood with a 11/4" diameter hole in it for calabration. Results were measured in Percentage of this flow. Later I had an electronic unit similar to what is in the vidios. You can run hunderds of tests looking for the "Holy Grail" of ports, but I couldn't find it.

[xxf_mike_xf]

Yah, I agree.. there isnt a holy grail, perhaps its best to say one could find the best possible port arrangement for a particular combination.

I have been dragging my feet on doing this as a 3D model... Solidworks appears to have a good fluid dynamics solver but I'll need to learn what its weak points are. If anything, it will allow me to actually see whats happening to the air/fuel mix as it travels into the cylinder.
http://www.solidworks.com/sw/3d-cad-design-software.htm