03-15-2023, 09:30 AM | #21 |
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Re: merc cam price
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03-15-2023, 11:25 AM | #22 | |
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Re: merc cam price
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
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03-15-2023, 12:04 PM | #23 |
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Re: merc cam price
How long will something last after dipped in cosmoline? Just asking.
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03-15-2023, 01:00 PM | #24 | |
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Re: merc cam price
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I have found Cosmoline will attack the bearing Babbitt surface actually eating away at the surface rendering the bearings junk. Cosmoline will not preserve a surface forever it eventually becomes acidic from what I have seen at least on bearings. Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
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03-15-2023, 01:06 PM | #25 | |
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Re: merc cam price
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I always use adjustable lifters I never tried using the stock lifters on anything I do so I have no experience on this subject. Using stock non adjustable lifters would of course require the valve stem length to be longer to account for the additional lift on a reground cam. That being said Using a good quality high tensile strength welding rod to add to the valve stem length would certainly hold up fine especially in a Ford flathead application. Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
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03-15-2023, 03:29 PM | #26 | |
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Re: merc cam price
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In the old days we torch brazed the tips with Eutectic 16fc. No heat treat required. Now we TIG weld with 347 stainless. No heat treat required. Machine to length in a lathe with DRO. For last 20 years we have been using John Deere valves if the customer wants stainless to run nitro. Otherwise it is NASCAR titanium take outs. Neither require welding. Our lifters have 9 3/8 holes drilled in them and weigh 33 grams. We only do vintage circle track engines of 321 ci or bigger and we turn them 7200 twice a lap. NO valve train problems. Cam lift in the .450 range. |
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03-15-2023, 05:08 PM | #27 | |
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Re: merc cam price
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I wasn't even born yet in the '50s, but do have a fair bit of experience with performance engines. Are you talking about flatheads running nitro and turning 7200 rpm? Today, you simply custom order a set of valves with longer stems. Maybe technology has passed you by? |
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03-15-2023, 05:35 PM | #28 | |
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Re: merc cam price
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As far as the valves, it would seem rather stupid to order a set of valves from yourself. |
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03-15-2023, 06:24 PM | #29 | |
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Re: merc cam price
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03-15-2023, 06:47 PM | #30 | |
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Re: merc cam price
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For those wondering WTF? I had asked Pete.... "WHY MUST ALL ROUND MOTORS HAVE AN ODD NUMBER OF CYLINDERS PER ROW"? It's possible that when I added "PER ROW", I may have confused matters. So, let's just imagine any of the simpler SINGLE ROW round motors, which all function on the same theory. For instance, we have the famous Pratt & Whitney R985 9-cylinder "round-motor". I stated that ALL round motors have an odd number of cylinders, per row. Well, the "985" is a single row engine. There is also a 7-cylinder Jacobs, as well as a 5-cylinder Kinner.... ALL with a mandatory odd number of cylinders made-up in configurations of one row each. All round motors (technically called "radial engines") have odd numbers of cylinders. The question was WHY? It all has to do with firing order. All round motors have #1 cylinder on top (as you face the REAR of engine). The cylinders are numbered as you count them in a CLOCKWISE direction. So, to keep matters simple here, let's look at a Kinner 5-cylinder engine. #1 cylinder is sticking up on top, center. The next cylinder to your RIGHT in the rotation is #2, then continuing on to #3, then around to #4, and eventually ending-up at #5, located to the LEFT of #1 up there on the very top. Below is a visual of a 5-cylinder round motor. KEEP IN MINDThis one is being seen FROM the Rear. THIS ONE is rotating clockwise. The actual firing order is 1-3-5-2-4. And you must remember that these are regular old 4-CYCLE engines. On the 5-cylinder engine, #1 fires, skip ONE cylinder and #3 fires. Then we skip a cylinder and #5 fires. Then we skip #1, and #2 fires. Then we skip #3 and #4 fires. After #4-cylinder fires, the next in line to fire would be #1 since the order skips ONE cylinder (#5) before firing again. IF you had a 6th cylinder, or any other even number of cylinders, your firing order would never let you get back to #1 cylinder firing. Make sense now? Coop . |
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03-15-2023, 09:22 PM | #31 |
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Re: merc cam price
Coop I have always admired anything air craft related especial radial engines. Heck last month I spent many hours at the Air Museum in Chino enjoying every minute of it. However I never gave much thought to the reason for the odd number of cylinders or the firing order. Your explanation is now etched in my brain I really enjoyed your explanation and visual example.
Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
03-15-2023, 09:29 PM | #32 |
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Re: merc cam price
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03-15-2023, 09:47 PM | #33 | |
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Re: merc cam price
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Coop . |
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03-16-2023, 05:25 AM | #34 |
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Re: merc cam price
Coop thanks very much for the explanation. I too have always loved radial engines and been very intrigued by them. My old boss has a T6 with one a spare on a stand and some other kind on a stand. One of the baddest looking I have seen was a staggered multi row in the Curtis museum. Again thanks makes perfect sense.
Last edited by KiWinUS; 03-16-2023 at 07:16 AM. |
03-16-2023, 06:56 AM | #35 |
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Re: merc cam price
I too love radials. From birth untill the early 60s I often rode Ford Tri-motors to Put-In-Bay Ohio. Also watched Super G Constalations do mag checks & run ups at Port Columbus. The sound & smell are GR8, just like our flatheads have their own attributes. They also "mark their territories"..........
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