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1 CYL Deutz Diesel

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Old 06-25-2007, 05:15:57 PM
Dail R H Dail R H is offline
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Default 1 CYL Deutz Diesel

I just found a Deutz 1 cyl ,model FIL712,sn 208986QA on a logging equip,sale site. It looks to be water cooled,$750,not running. Anybody know anything about these engines,hp ,speed parts ect?
Thanks Dail
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Old 06-26-2007, 12:14:52 AM
dieselfreakcjw dieselfreakcjw is offline
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Default Re: 1 CYL Deutz

Hey Dail,
From what I have been around them Deutz(pronounced "doytz") are excellent engines but you say this one is liquid cooled this is new to me because everyone i have seen is air cooled which is the only downfall to them (they tend to overheat and burn up in the hot climate where i am at) I have even seen one that was a V 8 about the size of a 3408 CAT if you have ever seen one and it was air cooled. A buddy of mine has a Miller Bobcat welder with a single cylinder Deutz and he uses it as a generator for his cabin in the mountains excellent little engine and very fuel efficient. All i have is one warning and that is don't use ether on em cause it kinda tends to stretch head bolts Ha Ha
Hope this helps,
Cory Willbanks
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Old 06-26-2007, 07:11:07 AM
Happy Old Iron Happy Old Iron is offline
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Default Re: 1 CYL Deutz


The F1L712 is definitely an air-cooled engine, built in the late 50's and early 60's. F is for engines, L is air-cooled (luft in German) 7 is the series and 12 is the stroke (120 mm which is 4,72 ")
They built it from single cylinder like this one, 14 hp at 2400/min til at least a six in line, but they also built V12 engines.
This engine was built in different tractors, eg the Deutz D15 and other brands.
Deutz started on building water cooled engines.
Their first air cooled was built in 1950 and from that moment everything became air cooled.
You can see a D15 tractor at my site,
Marc Geerkens
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Old 09-17-2007, 04:12:57 AM
MDoubell MDoubell is offline
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Default Re: 1 CYL Deutz

Here is a pic of a 1934 Deutz water cooled engine seen at the Willem Prinsloo Farm Festival in South Africa.
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Old 06-22-2011, 04:14:56 PM
Deutz Norwegen Deutz Norwegen is offline
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Default Re: 1 CYL Deutz

I have two in running order and one stuck. It replaced the F1L612 in about 1956-7. Some parts are awailable from He is not an english speaking person, so find someone speaking german. to loosen it. take off the cooling chanel, fuel line, exhaust system, glow plug connection and intake manifold. Loosen the four bolts holding the head down. If stuck, then give it a blow with a big piece og wood on the side of the head. If stuck, clear away tank and whatever is left around the casted cylinder. Fill it with diesel and heat it up carefully until it gets to 70 degrees C by using a propane heater for two hours, adding more diesel if it burns up and moving the flame around all the time. Do it safely outside or at a suitable place. Have used this on three cylinder engines too. Leave it for cooling untill the next day, and repeat the treatment. Also 1 day more. After three treatments it ought to be loose. Attack the flywheel by hand and rock it back and forth.

Good luck

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Old 06-22-2011, 10:10:34 PM
antenna antenna is offline
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Default Re: 1 CYL Deutz

The Deutz tractors and stationary engines that my Dad sold out his dealership never burned up from being air cooled. He sold a couple of hundred tractors and stationary engines with no problems. His competition said that the air cooled engines would overheat. What do you use to cool the radiator core with on water cooled engines?
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Old 06-23-2011, 07:47:12 AM
Combustor Combustor is offline
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Default Re: 1 CYL Deutz

Agreed cooling was never a problem with Deutz engines, even in the most tropical conditions. An annual clean of cooling fins is all that's needed. Keeping them warm in cold weather is a bigger problem, regards, Combustor.
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Old 06-23-2011, 09:46:08 AM
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E27N E27N is offline
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Default Re: 1 CYL Deutz

I grew up driving a Deutz DX145 tractor great machine did 10000+ hours before the tranny finally gave up, air cooled never worried it even in 40-45 degrees C temps pulling a harvester in the aussie summer. Dad did put the warning horn for the fan belt in the cab though, scared the crap out of unsuspecting drivers when they hit the horn :-)
Never let the truth get in the way of a good story....
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