Hall-Scott gas engine

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Hall-Scott gas engine

Home > Discussion Forum > Bus Conversions - School

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All Messages in Thread	Author	Date
Hall-Scott gas engine	David Groth	3-10-02
I am looking at 1953 Crown with 504 Hall Scott engine. Are parts readily available for the Hall Scott? This is a mid engine coach. Would it be fairly possible to replace the Hall Scott with a GM 366 gas truck engine?
Re: Hall-Scott gas engine	Mark O.	3-14-02
Re-powering to a gas V-8 is possible but not practical. Due in large part to the mid-mount location a "V" type engine of any type is not going to fit very well unless you end up having it stick through the floor. If you don't over rev or lug a Hall-Scott they will last virtually forever. Lug them and you will break a crank. Over rev them and you will send a piston through the side. The other problem with them is since they are so big (some as large as 904 cubic inches) it takes a lot of fuel to get them going and keep them going. Think in terms of 1-3 MPG. As others have said, find a newer Crown with a diesel. Parts are not hard to find for them, they get lots better fuel mileage, and they will handle highway speeds and hills a lot better. Happy trails. Mark O.
Re: Hall-Scott gas engine	spike	12-22-08
Hello Everyone, I have parts for 504 Hall Scott's Many parts. I'm looking for 590 verticle engines in good shape. I'm looking for 504 horizontals in good shape. I have manuals for many, many models of Hall Scott's. If any of you have one of these engines or know of anyone with one who might want to sell it, please get a hold of me. I'm located in Los Angeles. I'm the owner of the (new) Hall Scott Engine Company Would love to hear from you, Thanks, Spike 323-600-5630
Re: Hall-Scott gas engine	KAF	3-10-02
Hi David Unfortunately, parts availability for the Hall-Scotts has gone down considerably in the past years. A lot of school districts stopped buying Crown Supercoaches with Hall-Scotts in the early to-mid 1960s after the Cummins 220 Diesel was introduced into the lineup. Hall-Scott ceased production shortly after that. A small handful of school districts and fire departments still have some Hall-Scott parts on hand, but as I mentioned, those engines are few and far between nowadays. I think it would be easier to purchase a Crown that already has a diesel engine in it if that's the way you want to go. Modifying another engine to fit underneath a Crown might not be worth the time and money, unless you're getting the bus for next-to-nothing. The Hall-Scotts were sweet sounding engines, but they're a rare and dying breed. I hope this helps you a little bit. Good luck. :)
Re: Hall-Scott gas engine	Buslady	3-29-02
I would get a diesel in that baby. Hall-Scott sound cool but get crappy milage. Parts are scarce. Get a Detroit in one and parts are practically off the shelf. 50s aren't the best to convert, the later the better. My reccomendation would be late model Crown with dual air brake. Don't bother with maxibrakes, it's weird when you pull the thing to take the brakes off. Whatever... Buslady Crowns Rule I am looking at 1953 Crown with 504 Hall Scott engine. Are parts readily available for the Hall Scott? This is a mid engine coach. Would it be fairly possible to replace the Hall Scott with a GM 366 gas truck engine?
In 1992 there were...	Kd5kfl	3-11-02
7 head gaskets remaining for Hall Scott engines. In the world. According to a guy who had an ACF-Brill, and was a member of the Hall=Scott owners group. DD and Cummins powered Crowns are everywhere, typically <$5000
Re: Parts ARE availible	Rodger Rhodes	3-13-02
The hall-scotts are very simple engines. They dont have pressurized radiators like modern vehicles. So they will practically never overheat because of a pinhole leak somewhere. (and cooling problems usually are the second cause of all breakdowns followed by fuel problems) These engines were built NOT to be serviced by a knowlegable mechanic. Because back when they were designed in the 1930s there was not a very organized and trained infastructure to get things fixed. So when they designed it it was made stone simple so that anyone could repair it. What parts are you going to need? Well I would say that your going to need GASKETS. You wont be able to find any off the shelf gaskets. But dont worry. Hall-Scott gaskets are not like todays specialized gaskets for hi compression modern engines. They are low compression, low technology pieces. You can have gaskets made by shops that specialize in very old classic cars (try the classifieds/magazine "Hemmings Auto News" for sources). Oil pan gaskets, Crankshaft seal, and other gaskets can be formed in place with RTV silicone that you can purchase at any auto parts counter. If you need carburetor parts I would recommend just throwing away the carb that comes with the engine. Its way too old to reuse and plus it wastes a tremendous amount of gasoline. Your better to just get a modern 2 barrel holly or carter carburetor. You can use a spectre brand adapter to make the new 2 barrel carb fit the antique square bore 4 barrel thats on the engine now. All you do is flip the carb adapter upside down and it bolts right up. You might need to replace the water pump seals. Some people think if you cant buy a new waterpump off the shelf that you cant get a water pump rebuilt. Not true. All you have to do is replace the little rubber seals in the pump and its brand new again. Just dont look at the auto parts stores for you parts. You have to go to specialized people. Companies that work on very old cars know how to fix these simple engines. The best place to find these companies are in the classic car magazine, Hemmings Auto News. As for internal engine parts, I dont think you will ever need those. But if you do, there are many companies that specialize in casting new pistons and bearings from molten metal. Practically everything can be renewed on a Hall-Scott engine. You just have to think different. Dont throw away that strong crown bus just because you cant get parts "off the shelf". Most of the time you will never need "parts", Just cheap to make gaskets. Even the distributor cap can still be had from the autoparts store. Most people will tell you to run away from it because they just dont know how to make things from scratch, even thought it doesnt cost that much more money. If you walk into a machine shop and you say I need XXXX now and how much will it cost me, they are going to think your a SUCKER and try to take you to the bank. You have to ask questions like, I need XXXX and I need it CHEAP or Im going somewhere else. Let the shop know that your a tightwad. One thing you better know about that hall-scott engine is that it is just like a diesel engine in the way it is supposed to be operated. DO NOT rev it up past 2800 RPM. It wont explode the first time but rest assured that it will throw a piston connecting rod if you keep doing it. Ive seen people that dont know how to drive these gas engines. They rev them up to 4000 rpm, burn out the clutch and then throw a rod through the engine block and then blame it on the "the engine being old". If you dont look at your RPM's and blow the hall-scott up, then you can replace it with a International DT466 diesel engine. all you got to do is have some engine mounts and an oil pan fabricated and get a oil filter relocation kit and your on your way. If your nuts then you can install a V8 in the middle or even in the back like most buses. Crowns can be modified to do almost anything. If you have anymore questions just ask.
Re: Hall-Scott gas engine	James Phinney	10-4-08
I have a 1950 crown coach with a hall scott engine, the brass decal on the underside of the engine says it is a 1020cuin engine, is this bored out or actual manufacturer's size?, it is fun to drive and I love the shift pattern.
Re: Hall-Scott gas engine	Cory Acklus	2-3-03
I have 2, 1956, 590 Hall Scott Engines, as well as two transmissions for them. It is all in great shape and am willing to sell them. If anyone is interested or curious about these products email me at Mu65stang@aol.com.
Re: Hall-Scott gas engine	Rusty	4-8-08
I have a '58 Crown bus with a 590 Hall Scott gas motor. Cracked my waterpump and am needing a replacement - want to know if anyone knows if 504 H-S will interchange?
Re: Hall-Scott gas engine	ART THOMPSON	9-14-05
I'M LOOKING FOR HALL SCOTT ENGINE PARTS MAIN BEARINGS FOR 935 GAS ENGINE
Re: Hall-Scott gas engine	Don Hogarth	5-25-05
I have a 1965 Crown Fire Coach, sounds to me like it has a bad misfire. Power plant is a Hallscott 6 cyl., dual ignition. If possible I need a firing order. Thank You, Don Hogarth PS: It's urgent, coach is suppose to be in parade at beginning of month.
Re: Parts ARE availible	Kevin Daly	9-18-02
Roger: i attempted to email you and the email was sent to Mark O. i would love to ask you a couple questions about the hall scott. hope i find away to get in touch with you. kevin
Re: Parts ARE availible	Joel Anderson	12-19-02
Wanted: Hall-Scott 935 C.I., Gas Powered Tappet Cover, 6 Cylinder to finish up engine
Re: Parts ARE availible	Allen L Baehr	5-29-04
I need a new needle & seat for the Big updraft 4 barrel carb.
Re: Hall-Scott gas engine	MIKE	2-14-03
I HAVE A 1957 FWD FIRE TRUCK PUMPER WITH A HALL SCOTT 935CI WOULD LIKE MORE INFO ON WHERE TO GET MANUALS. NEED INFO NOW ON ING. PARTS,DIST MAGNETO ETC.MAY BE INTERESTED IN SELLING WHOLE TRUCK. HAVE READ THESE TRUCKS ARE KNOWN FOR BACK FIRING......WHY? HAVE FOUND SOME DIST PARTS NEED INFO ON AMERICAN BOSH MAGNETO.THANKS FOR ANY INFO, MIKE
Re: Hall-Scott gas engine	Trey Cameron	12-18-06
Do you still have your old fire truck?? I am interested in it.
Re: Hall-Scott gas engine	GORDON PETERS	11-29-03
WHEN DOSE IT BACK FIRE HOT OR COLD ON DEACCLERATION OR ACCLERATION