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08-05-2010, 03:26 PM | #41 | |
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Re: The making of a cylinder head
Quote:
Old country boy my a$$ .... You're one of the most knowledgeable men this site has ever had! I ALWAYS can rely on your advice and so can anyone else. Yes, about the running cylinder pressure. Optimized air flow raises the running cylinder pressure (or compression pressure as it is officially known but when you refer to it as compression pressure the average joker thinks you mean gauge pressure). Compression pressure is what the engine actually sees and it varies in an engine every time the throttle is moved. It is determined by the cylinder head, compression ratio, valve size, RPM, manifold design, cam design, carburetor size, type of fuel, altitude the engine is running in, the temperature of the engine, the free flowing of the exhaust and any other thing I can't think of. Larry B. Last edited by Larry Brumfield; 08-05-2010 at 04:08 PM. |
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08-05-2010, 04:27 PM | #42 |
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Re: The making of a cylinder head
I, too, am one of those who really appreciate posts like this. I have hardly any knowledge and even less skill in this area, but am really enjoying learning from all of you. Thanks for the time and effort you've taken to share with everyone.
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08-05-2010, 05:09 PM | #43 |
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Re: The making of a cylinder head
When I was a young boy I told my Dad that I could not do some thing. He said Son there is nothing in this world you can,t do, there maybe a lot things you won't do.
I never forgot that and he is right. The limits we have we put on our selfs. You feel so much better when you go out and do some thing. My hope is this cylinder head thing will help some to get off their rear and try. |
08-05-2010, 06:01 PM | #44 |
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Re: The making of a cylinder head
George, this is great, we are in the process of machining a set of solid heads for our Flathead V8 dragster and know how much work is involved.Lawrie
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08-05-2010, 07:08 PM | #45 | |
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Location: South California
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Re: The making of a cylinder head
Quote:
Yeah, You/Frick/Stipe are my images of what can be and inspirational for A/B incurable speed afflictions. I've seen your contributions in sharing freely with us here, over the years! I've watched Stipe grow also and have some of his great equipment(hmm, where's that OHV head..he keeps promising..see his site!). Please keep posting your progress on this project. And, thanks for all you've done for us in sharing your knowledge. lol Rick |
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08-05-2010, 09:06 PM | #46 |
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Re: The making of a cylinder head
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No, not as good as an OHV but still good at lower RPMs. The flathead can still breath at lower RPMs. I don't think an OHV will help very much on a low RPM motor. Just my opinion. |
08-06-2010, 10:21 AM | #47 |
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update
This is it for this week. Putting in the exhaust ports.
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08-07-2010, 11:04 AM | #48 |
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Ended up doing more on the head today
Got the port runners in on one piece, next do the same on other piece.
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08-07-2010, 12:07 PM | #49 |
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Location: Houston Texas USA
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Re: The making of a cylinder head
George are you using all three axis there - like ramping down the runners rather than tilting the part up?
John Oder |
08-07-2010, 12:41 PM | #50 |
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Re: The making of a cylinder head
George are you using all three axis there - like ramping down the runners rather than tilting the part up?
Yes I was going to tilt the part but ended up just free hand it. I' m going to polish them any way. |
08-07-2010, 07:14 PM | #51 |
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Location: Mooresville NC.
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Re: The making of a cylinder head
George this is really a treat to see. Most people dont get to see this stuff and for you to be doing it and showing us as you go along is great. I like to watch the machinest where i work do his thing on the bridgeport and lathes. it truly is amazing what you can do with them things.
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08-10-2010, 03:14 PM | #52 |
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Re: The making of a cylinder head update
Update on the making of a cylinder head
Been working on the ports and water jackets on both pieces. Still have more to do on the water jackets. And for you Larry B I have 43 hours in the head already and not close to done. |
08-11-2010, 01:06 PM | #53 |
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Re: The making of a cylinder head
Did not get much done today, had to mow grass.
Machining for a water pump, and taking away extra metal around the water pump mount. I'm at 47 hours on the head. I was thinking 80 hours for making the head. Looks like it will be close. Now if you had every thing you needed in tooling and a CNC it would be a lot less hours. |
08-11-2010, 01:28 PM | #54 |
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Re: The making of a cylinder head
Sure looks like a CNC with the (?) ball screws and long saddle George......
John Oder |
08-12-2010, 02:02 PM | #55 |
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8-12 cylinder head up date
Here are picture of O ring grooves for head bolts and push rod holes.
Also for you CNC guys a picture how we put on radius in the old days. |
08-16-2010, 04:08 PM | #56 |
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Re: The making of a cylinder head
Machined the spring pockets, and put in one valve to see how it looked.
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08-16-2010, 05:15 PM | #57 |
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Re: The making of a cylinder head
Well, about 52 hours or so, so far
Labor charge: 52 x 75.00 3,900 dollars |
08-16-2010, 06:51 PM | #58 |
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Re: The making of a cylinder head
in my neck of the woods it would be 52 x 95.00
4,940 dollars nice job george Last edited by Mitch//pa; 08-16-2010 at 07:56 PM. |
08-17-2010, 01:34 PM | #59 |
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Re: The making of a cylinder head update 8-17
Put the head on the engine it is going on to see how it looks.
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08-17-2010, 02:49 PM | #60 |
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Re: The making of a cylinder head
Will you be grafting a rocker arm assembly from some factory engine?
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