BIG THANK YOU TO Ol`Ron

HotRodmicky

HotRodmicky

Senior Member
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
 
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
 
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.
 
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
 
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 said:
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
Click to expand...

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

Vergil

picture.php
 
Ol' Ron said:
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
Click to expand...


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 :)
 
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.
 
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:
http://www.youtube.com/watch?v=Ydtvb5nZBLg&feature=related

Operation:
http://www.youtube.com/watch?v=fLrDjNqj5rQ&feature=related

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