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Generators & Electric Motors General Discussion Antique Generators and Old Electric Motors: Questions and answers about restoring and showing old power generation systems.

Generators & Electric Motors General Discussion

GM Detroit 6-71 Delco Generator


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  #11  
Old 02-25-2017, 08:38:41 PM
mschreiber mschreiber is offline
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Default Re: GM Detroit 6-71 Delco Generator

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Originally Posted by Vanman View Post
I remember working on a job site once where the iron workers had a 671 powered welder. It sounded SWEET! WAAAAAAAAAAAAAAAAA!!!!!
671? biggest detroit welder i seen was 471. more info please.
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  #12  
Old 02-25-2017, 09:02:23 PM
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Default Re: GM Detroit 6-71 Delco Generator

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Originally Posted by Troll View Post
Always have ran Delo 100 in my two strokers. If not that, FS branded SAE30 straight weight. Oil always drains clean and black.....
That link talked that single grade, 40wt is used to be used year round. I have a friend that ran two stroke Detroits from 8V71's to 8V92's in his truck tractors. Summer 105 degrees or winter below 32 degrees, He ran straight 40wt.
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Old 02-25-2017, 09:22:40 PM
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Default Re: GM Detroit 6-71 Delco Generator

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Originally Posted by Motorhead View Post
That link talked that single grade, 40wt is used to be used year round. I have a friend that ran two stroke Detroits from 8V71's to 8V92's in his truck tractors. Summer 105 degrees or winter below 32 degrees, He ran straight 40wt.
yes it does. I've ran straight 30wt oil in my two stroke Detroits for nearly 40 years without problems. I don't see where either will matter much with good service routines myself. All four stroke engines are run with Delvac 15W-40 and I think it's Delvac 1300. I purchase oil by the 55 gallon barrel about once a year and just call the order in as the distributor knows what I want.

Quote:
Originally Posted by Vanman View Post
I remember working on a job site once where the iron workers had a 671 powered welder. It sounded SWEET! WAAAAAAAAAAAAAAAAA!!!!!
Buddy of mine at the mines had a 6-71 powered "Hobart" welder which two welders would work from simultaneously. It was monsterously powerful to air arc with and I'm thinking it was an 800 amp machine. Yes, it was LOUD!!!
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Old 02-25-2017, 09:28:21 PM
Vanman Vanman is offline
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Default Re: GM Detroit 6-71 Delco Generator

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Originally Posted by mschreiber View Post
671? biggest detroit welder i seen was 471. more info please.
Oh, this was a long time ago. I wish I had more details, but I was an electrician on the job and would not have noticed the welder at all were it not for the sweet music it was making.

But there's no mistaking the sound of a two stroke six. The thing was big too. I'm sure it was on a two axle trailer. Funny, I asked a fellow I was working with, what rpm he'd guess it was running. He said 3600?
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Old 02-25-2017, 09:48:51 PM
brent1 brent1 is offline
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Default Re: GM Detroit 6-71 Delco Generator

This is the voltage regulator on the inside panel on the left side of the generator. It has eight wires coming out from the generator attached to the regulator. Not sure what the voltage this thing is making yet bc I have not started it yet. My diesel mechanic is getting everything together and we are hopeing to start it this weekend. Anything we may need to no to the head before firing it up? It has been sitting in a heated building for three years since it last ran. Hopefully everything is good on it. Will update everyone when we get her running. Sure I will need earplugs.
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  #16  
Old 02-25-2017, 10:00:38 PM
Vanman Vanman is offline
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Default Re: GM Detroit 6-71 Delco Generator

One thing in the head that you'll want to check is the fuel control rack, to be certain that it moves freely.

I'd imagine that that engine also has an emergency shut down "mouse trap" on the intake. It's good to make sure that's working.

As for the generator, I'd think that as long as all leads are insulated against shorting to each other or ground it should be fine.
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Old 02-25-2017, 10:07:30 PM
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Default Re: GM Detroit 6-71 Delco Generator

Yup on the rack. Detroit's start at maximum fuel and the governor pulls the rack and injectors back to low idle so it needs to move very easily. I'd pull the rocker cover if it were me operating the linkage by hand and also operate the air shutoff flap before starting it up.
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Old 02-26-2017, 08:43:44 AM
brent1 brent1 is offline
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Default Re: GM Detroit 6-71 Delco Generator

Just out of curiosity does anyone out there know if this is a brushless generator or does it have brushes? The reason I ask is because I spoke to a tech who told me that if the unit has not been spun in a while that there could be rust and cause some damage. He also was not sure if there were brushes on this unit or not. Just throwing that out there to see if anyone might know. Thanks again for all the help.
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Old 02-26-2017, 01:04:34 PM
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Default Re: GM Detroit 6-71 Delco Generator

From looking at the picture that shows the back end of the generator, it looks like there is an inspection cover on the top right of the generator. Pull the cover and take a look.
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  #20  
Old 02-26-2017, 01:33:57 PM
Steve Dawkins Steve Dawkins is offline
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Default Re: GM Detroit 6-71 Delco Generator

Detroit Diesel.....the most efficient method of converting diesel fuel to noise.
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