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10-05-2015, 03:09 PM | #1 |
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5 main, chev, crankModel A engine
I know this is not for ever one, so don't look if you do not want to see a chev crank in a, A engine.
After a couple of years I'm back working on this engine. Today I started to make rods for this engine out of 7075 Alum. I made a wooden one first to make sure my math was right. If there is any interest I can post some pictures of making the rods along the way. This engine will be for my home built over head cylinder head. |
10-05-2015, 03:21 PM | #2 |
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Re: 5 main, chev, crankModel A engine
Interest here
Pics please Mr Miller |
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10-05-2015, 03:24 PM | #3 | |
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Re: 5 main, chev, crankModel A engine
Quote:
Herm. |
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10-05-2015, 03:29 PM | #4 |
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Re: 5 main, chev, crankModel A engine
Ok I will take them after each operation. Also I will be using 283 Chev pistons.
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10-05-2015, 03:30 PM | #5 |
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Re: 5 main, chev, crankModel A engine
George, Whittle away and lots of pictures please! Gary
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10-05-2015, 04:08 PM | #6 |
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Re: 5 main, chev, crankModel A engine
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10-05-2015, 04:27 PM | #7 |
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Re: 5 main, chev, crankModel A engine
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10-05-2015, 04:09 PM | #8 |
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Re: 5 main, chev, crankModel A engine
I'm watching, interesting
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10-05-2015, 04:11 PM | #9 |
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Re: 5 main, chev, crankModel A engine
Day one. The picture of putting in wrist pin holes. Also the wooden rod that I made to make sure my math was right. Also to make sure it cleared every thing in side the engine. The alum rods will be a little different in shape.
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10-06-2015, 11:54 AM | #10 | |
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Re: 5 main, chev, crankModel A engine
Quote:
Is 7075 a suitable application for engine temps? Are you going to shot peen it? Heat treat it?
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10-06-2015, 01:45 PM | #11 |
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Re: 5 main, chev, crankModel A engine
Thanks for the advice, but I have been running a Mill for many years. The end mills only job is to open up the hole. By not using a collet I can change tools faster. The finish size will be done with a boring head.
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10-05-2015, 04:16 PM | #12 |
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Re: 5 main, chev, crankModel A engine
Please keep the pics coming. Are you building a racing motor for the salt flats???
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10-05-2015, 04:25 PM | #13 |
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Re: 5 main, chev, crankModel A engine
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10-05-2015, 04:58 PM | #14 |
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Re: 5 main, chev, crankModel A engine
Thanks for this post Mr. Miller. How about some specs on the crankshaft. Been trying for some time to find one like this. Never thought to look at chev as the source.
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10-05-2015, 05:21 PM | #15 |
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Re: 5 main, chev, crankModel A engine
NIce! Never seen anybody whittle a rod out of barstock. Good Luck
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10-05-2015, 05:41 PM | #16 |
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Re: 5 main, chev, crankModel A engine
Im most curious how you handled the cam lobe timing.
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10-05-2015, 06:04 PM | #17 |
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Re: 5 main, chev, crankModel A engine
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10-05-2015, 06:14 PM | #18 |
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Re: 5 main, chev, crankModel A engine
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10-05-2015, 06:58 PM | #19 | |
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Re: 5 main, chev, crankModel A engine
Quote:
The 153 crank would be great, but it is to short for the A block. The A block is wide between 2,3 cylinders because of the dist. going through the head and into the block. |
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10-05-2015, 07:30 PM | #20 |
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Re: 5 main, chev, crankModel A engine
George, I don't think you can get a "smooth" firing order using the V8 90 degree crank. Depending on how you set up the valve timing, a 720 degree firing cycle would go 180-90-180-270 or 180-270-180-90. You can't get 180 degrees of crankshaft rotation between each of the 4 cylinders in the firing cycle. Seems to me the engine would run ruff.
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