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12-28-2017, 02:36 PM | #41 | |
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Re: Are these rotators?
Quote:
Certainly A hard hat area
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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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12-28-2017, 03:22 PM | #42 |
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Location: Orcas Island Washington
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Re: Are these rotators?
Like I mentioned before, they are in a 2x6 stud wall. I drilled 5/8 holes crossways through the studs and have some 1/2" steel rod slid in front of them. Now as for those mid '20s vintage overhead valve briggs and strattons, I think they are lag bolted down.
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Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) |
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12-29-2017, 04:19 PM | #43 |
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Location: Kingston Ontario Canada
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Re: Are these rotators?
What was the idea of the rotators and how long did ford use them?. Jack.
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12-29-2017, 05:05 PM | #44 |
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Location: Solihull, England.
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Re: Are these rotators?
I think this is right - Ford deleted the valve inserts and just ran the valves straight in the block. To compensate for this downgrade, they introduced rotators on the valves. The slow rotation of the valves helps with seat life, offsetting the effect of the deletion of the inserted seats.
i could have just made that up but I think it is right. Mart. |
12-29-2017, 06:27 PM | #45 |
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Re: Are these rotators?
Rotators were kind of a new thing at the time so I think that is one reason. Better fuel availability was also part of that decision in 1951.
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12-29-2017, 08:28 PM | #46 |
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Re: Are these rotators?
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Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) Last edited by GB SISSON; 12-29-2017 at 09:01 PM. |
12-30-2017, 10:35 AM | #47 |
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Re: Are these rotators?
Would they be looser to make the rotaters work?
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12-30-2017, 10:51 AM | #48 |
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Re: Are these rotators?
Valve rotators in the flathead is of non-positive type...which means engine vibration randomly makes the valve rotate.
The extra clearance shouldn´t be needed for rotation. My thinking is change in camspecs and added power/heat lead to new clearance specs. Rotators work as good on hard seats as on castiron. We have to keep in mind that ford didn´t make changes to improve performance only...they did it to make money...Muntz engineering |
12-30-2017, 12:43 PM | #49 |
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Re: Are these rotators?
Sounds like I just may use the 59ab valve lash specs. I'm sure it has the earlier style cam in it as the crab distributor. I have the pan back on and after the valves are adjusted (for the 4th time), I'll continue to add components. I put a starter in it last night and primed the oil pump. The engine without heads, cranking on 12 volts runs the mechanical oil pressure gauge up to 60 lbs. Sounds promising. On the other front, I chased all the block threads with a headbolt with a slot from a cutoff wheel. All holes now look great. I have about 100 head bolts and I high graded my meager stud collection for the engine I built last winter for the woodie. With hobby funds deleted by the woodie project it looks like this is a head bolt engine. The cleaned up threads give me newfound confidence.
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Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) |
04-20-2024, 01:49 AM | #50 |
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Re: Are these rotators?
I was doing a search on valve lash with rotators and came across this from 2017. Looks like pretty much everything I'm doing now I just did seven years ago and forgot what I did. Kinda scary, but I got a lot of good info that I can now use again.
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Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson) |
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