Duramax Diesels Forum Truck of the Week
  #451  
Old 07-06-2018, 12:45 PM
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I was over in Danville area last week on way home from Cali, but the pilot wouldn't stop so I could say hello...

Did you see me waving Mark?

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  #452  
Old 07-06-2018, 01:55 PM
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Wrapping up the Borg Warner marine transmission pattern to dyno driveshaft adapter on engine # 2 this week.

Bearing hub assembly is done. Just waiting for our 4130 shaft with EDM splines being cut by a shop in Michigan. Then that piece gets keyed, pressed, and welded into a 1" thick 10" dia chunk of 4150 that contains the 8 bolt pattern for Danville's dyno driveshaft. Last is balance that rotating assembly, and press everything into double roller carrier bearings.

Expensive little adapter project, which I hope to justify someday...
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  #453  
Old 07-06-2018, 04:02 PM
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Looking good bud! No I didn't see you waving, lol!
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  #454  
Old 07-20-2018, 08:50 PM
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Coolant arrived today.

Sure hope it's worth the price. $50 a gallon, and no 50/50 mixing this stuff...
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  #455  
Old 07-20-2018, 09:00 PM
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You have those engines set in the boat yet?
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  #456  
Old 07-20-2018, 09:21 PM
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Anyone have first hand experience hardening 4130 Normalized?

Had the splines cut, then double keyed this output shaft of the dyno adapter assembly. Think it should be hardened before this piece gets pressed into the 4150 driveshaft hub.

Youtube has a few examples, but I prefer comments with real world experience.
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  #457  
Old 07-20-2018, 09:42 PM
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Quote:
Originally Posted by lutzjk913 View Post
You have those engines set in the boat yet?
No, waiting for spot on the dyno. Sled pulling and boating season seem to conflict.

However, as of today the boat is just coming outa paint. So now the owner is anxious to get things finished in time to attend a major poker run next month.
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  #458  
Old 07-20-2018, 09:49 PM
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Is there any reason you choose 4130 vs a more robust option such as 4340?

I don't have any first hand experience with it but the treatment seams to be very close to plan carbon steels which I've done.

Do you have any idea what RC hardness you are looking for?
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  #459  
Old 07-20-2018, 10:02 PM
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Quote:
Originally Posted by kidturbo View Post
Coolant arrived today.

Sure hope it's worth the price. $50 a gallon, and no 50/50 mixing this stuff...
Looks like an expensive rebranding of some brake fluid to me
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  #460  
Old 07-20-2018, 10:04 PM
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Quote:
Originally Posted by 2004LB7 View Post
Is there any reason you choose 4130 vs a more robust option such as 4340?

I don't have any first hand experience with it but the treatment seams to be very close to plan carbon steels which I've done.

Do you have any idea what RC hardness you are looking for?
Piece of 4130 is best I could come up with on short notice. No real idea on hardness. Since I don't expect it to take any hard hits on the dyno, goal is just harden those splines.
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  #461  
Old 07-20-2018, 11:07 PM
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Looking at sending it out or doing it yourself?
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  #462  
Old 07-20-2018, 11:25 PM
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Actually my machinist has gotten into forging knives lately. Has a nice little oven if we wanta do it slowly. He's just never done anything that important before..

Most of the videos I've watched on heat treating shafts, they just heated it up cherry red with a rosebud, then tossed it in a pan of oil. But that seem a bit old school...
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  #463  
Old 07-20-2018, 11:54 PM
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If he's got a heat treatment oven then by all means do it. I make knifes too and built my oven/kiln. PID temperature controlled too

Get yourself a little stainless foil and wrap it up. Soak it somewhere around 1625-1650* for maybe 1/2 hour. Then dunk it in water. You can wrap it up like a tootsie roll so you can pick it up by one end and cut off the other so it drops right out into the water.

Temper at ??? Maybe 900-1200*. This is where you will have to decide on what kind of yield strength you want.


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  #464  
Old 07-21-2018, 09:19 AM
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Quote:
Originally Posted by kidturbo View Post
No, waiting for spot on the dyno. Sled pulling and boating season seem to conflict.

However, as of today the boat is just coming outa paint. So now the owner is anxious to get things finished in time to attend a major poker run next month.
Where’s the poker run at?
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  #465  
Old 07-21-2018, 07:03 PM
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Quote:
Originally Posted by 2004LB7 View Post
This is where you will have to decide on what kind of yield strength you want.
Thanks that's exactly what I was looking for...
--
Joe, we are looking to make the Lake Cumberland Poker Run.

Really wanted to do LOTO shootout this year. Maybe do a little side by side run against a certain C-powered Skater.. But that's just 4 weeks away. So Cumberland is next big boating event.
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