Hone made an OD..http://www.stangerssite.com/honeodrive.html years ago and I guess it is available again....http://hone-o-drive.com/hone-o-drive/
Boneyard51, You can find the Laycock (Gear Vendors-style) overdrive in some older Volvos, as well as Campers/Mobile homes. Takes some searching, but they are out there!... here's one on ebay right now https://www.ebay.com/itm/VOLVO-240-...h=item1eef71c2fa:g:k8EAAOSwm1dbyk9H:rk:9:pf:0
I realize you were not asking for this particular Willys Knight motor but it is the only one I have a file on. Finley R. Porter built 3 cars for Indy in 1915 with these Porter-Knight motors (the motors reportedly hastily constructed by John N. Willys) and they were withdrawn after attempting to qualify for the 500 after they were determined that they would not finish the grind. The new 300 cubic inch era (1915-1919) was the start of more purposeful racing cars in AAA and Indy. Almost all of the cars built and competing from 1915 would take advantage of OHC principles, whereas from the first race in 1911 through 1914 had a majority of modified stock cars. Porter had designed the very successful T-Heads used by Mercer in the first four contests but Porter was replaced at Mercer by Eric Delling who designed and built 2 sets of OHC Mercers. The three Porter-Knight motors displaced 270 inches with 122 HP at 3950 rpms. Many of the cars they would compete against would be turning probably closer to 3000 rpms so there were advantages to this design. It was reported that they had turned these motors up to 5000 rpms in tests so it would have been great to see them compete and develop. It was reported that Porter designed (although I am sure at the very least in concert with Willys) these engines “for developing a high speed small car…in as much as the trouble often experienced in positive opening and closing valves is so well guarded against in this motor”. Most if not all of the cars that these Porters would compete against would by necessity carry OHC motors designed to avoid some of the same issues with old valve designs. Although the cars did not compete at Indy they did make an appearance in late June of 1915 at the new 2 mile boardtrack at Maywood Illinois and once again they were withdrawn as they had no chance of finishing due to too much smoke. I do not believe they competed or attempted to compete again, sadly.
I was looking for something else when I ran across this magazine, here are some detail shots of the Leo Lyons SBC Hemi-
Looks like an Ardun LOL. Wonder why they went with the plugs next to each other unlike the evenly space mopar hemi.
Because the valve arrangement is not the same front-to-rear on SBC. The exhaust valves are siamesed next to each other on the middle cylinders and if you want to use existing camshafts the middle two rocker arms have to be side-by-side as shown, leaving no room for the plug between them. That IS a beautiful exercise in engineering. The valve covers would have to grow on me though. Giant dirt catchers also. I wonder why it did not go anywhere, production wise? Probably lack of funding. That and existing Mopar hemis were already there [ the 392 block was no longer than the SBC].
Well if that is the case and they started from scratch they COULD have switched the valve arrangement.
Thanks guys, but as you can see I live in Oklahoma, I do think they are allowed to sell Volvo’s here and I sure you can’t drive one in my state! Probably would be dangerous if you did. Lol..... Really not many here.. none in the junk yards. Not many campers in the yards either. Very little of anything worthwhile after junk went up a few years ago. I have scored some Brown-Lipes and some Watson’s and have a Doug-Nash two speed. I gues I’m just an auxiliary transmission junkie. Bones
Loudbang : Isn't that a HAL, as per the cam cover under the Winfields? Also didn't Offie put the magneto crossways in front of the motor?
Looks kind of like the old MG crank driven super chargers Sent from my XT1710-02 using The H.A.M.B. mobile app
This 4 stroke engine had only one valve that served both intake and exhaust augmented by the individual venturi's that aided breathing. First fitted and flown in a Stinson byPackard in the mid-30's. The original airplane and engine are part of the Golden Wings Collection of Greg Herrick based at Anoka County Airport in Blaine, MN
...any plans with the old Easthope? The old fishermen around Tsehum Harbor told me they sounded like "potato, potato, potato" when running.
I'm sure there is a placard on this engine at Speedway Museum but my guess is that it is a Babe Stapp aluminum head with mag drive and dry sump oil set-up on a Ford 8N tractor engine which were somewhat erroneously call Fergusons. The engine in the background to the left is a Frankie Brisco all aluminum block and head derivation of the Ferguson as well. Both of course were midget race car engines pre-war and early post war.
The Jalopy Journal
