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Vintage Diesel and Oil Engines Fairbanks Morse, Lister, Petter, Witte and other pump injected Diesel oil engines.

Vintage Diesel and Oil Engines

1-71 Detroit Diesel (GM)


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  #11  
Old 05-15-2016, 02:46:20 PM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: 1-71 detroit diesel (GM)

Chris, thanks again for your post. I have torn down this engine, except for the removal of the cylinder head and liner kit. Upon inspection through the liner ports, it appears that the piston, liner and rings are in very good shape. The exhaust valves were closed and the piston was covering the liner ports when it was last shut down many decades ago. This unit is fairly complete with original parts. It has a bronze fuel filter housing and canisters. The primary filter is a skinner type. It has a Evans vane fuel pump. I have seen these on very old Gray Marine 64HN9's. The oil filter is a bypass type and also a skinner. The PTO clutch is the original and upon removal from the engine, I noticed the part # 3290221 was imprinted on the driven disc. Overall, internally, it appears that this 1-71 has very few hours on it. I am taking pictures of the parts prior to and during assembly. Will post as it goes along. Aloha, Al
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  #12  
Old 05-16-2016, 09:27:27 AM
gootsch gootsch is offline
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Default Re: 1-71 detroit diesel (GM)

At one time Graymarine sold 1-71's as marine engines. Maybe parts marked as Graymarine are to be found somewhere to fit this engine.
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  #13  
Old 05-16-2016, 11:24:30 AM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: 1-71 detroit diesel (GM)

Thanks My 1-71 parts book shows a heat exchanger and raw water pump was available. You may be right.
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  #14  
Old 05-17-2016, 03:39:32 AM
The Diesel Doctor The Diesel Doctor is offline
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Default 1-71 detroit diesel (GM)

Evans vane fuel pump was used on early 1-71 engines. The pump shaft seals appear to be the same as the current gear pump. There are thin gaskets between the flange,body and cover. .002 thick.Click image for larger version

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Last edited by BTPost; 05-17-2016 at 12:38:54 PM. Reason: PLEASE keep to a single Thread on any ONE Unit... OK?
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  #15  
Old 05-31-2016, 02:33:03 PM
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Default Re: 1-71 detroit diesel (GM)

1-71 rebuild Crankshaft assembly p/n 5152746 The journals polished up well. All are std. The old leather seals cut slight grooves on the crank seal surfaces. I may use Sleeves and oversize seals.Might just reposition seal depth. Crankshaft oil seals p/n 5150846. Front and rear seals are the same. These seals are the same size seals used on current day 71 series engines.Click image for larger version

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  #16  
Old 05-31-2016, 03:01:37 PM
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Default Re: 1-71 detroit diesel (GM)

1-71 rebuild Fan hub assembly p/n5159031. Fan hub assembly has a oil fill port. When the hub pulley turns it circulates oil. The appendage attached to the hub shaft pushes lubricant to the bushing in the pulley. Fan blade p/n 3290426. suction type.Click image for larger version

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  #17  
Old 05-31-2016, 10:50:10 PM
gootsch gootsch is offline
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Default Re: 1-71 detroit diesel (GM)

In the past I have used speedie sleaves with standard sized rubber seals without problems.
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  #18  
Old 05-31-2016, 11:57:21 PM
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Default Re: 1-71 detroit diesel (GM)

The genuine detroit sleeve will fit on the shaft. Detroit now uses directional seals so i need to use a right and left hand one. Thanks Gootsch.
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  #19  
Old 06-04-2016, 01:07:36 PM
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Default Re: 1-71 detroit diesel (GM)

1-71 rebuild. Pushrods, roller cam followers and compression release.The cam follower rollers have needle bearings instead bushings as are currently used.Click image for larger version

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  #20  
Old 06-04-2016, 11:18:40 PM
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Default Re: 1-71 detroit diesel (GM)

1-71 rebuild.Click image for larger version

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ID:	255498 Dipstick p/n 5152866 Note the oil level operating range. We have come a long way. My BMW does not have a dipstick. Hand crank handle and support assembly. It will be cool to hand start a series 71 engine.
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