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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #150 on: January 27, 2020, 10:00:21 AM »
Yeah I didn't mention the manual valve. Not a fan (lots of long rubber hoses to make it work) but definitely an option.

JR, they used the 2nd gen it looks like.

i suppose it could be used in conjunction with the factory hard lines and just ‘tapped’ in to with rubber to run to the valve itself. i would imagine some good oil resistant suction line would work alright for the lift pump on the 12 valve. (provided youre staying mechanical and not FASS

Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #151 on: January 27, 2020, 10:57:35 AM »
That's what I'm doing with the burb. Factory lines, lift near the tank.
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #152 on: January 27, 2020, 08:06:16 PM »
My factory line ran down the wrong side. Then the new one I ran about 12 years ago was on the same side as well. Lol

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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #153 on: January 27, 2020, 08:58:22 PM »
My factory line ran down the wrong side. Then the new one I ran about 12 years ago was on the same side as well. Lol

pretty sure the ones on my crew are on the driver side. just get some of those

Offline Flyin6

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #154 on: January 28, 2020, 10:32:39 AM »
^^^ That's a big thumbs up!

Had to purchase additional storage space just to keep it on the thread!

Wow!

;-)
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #155 on: January 28, 2020, 03:16:07 PM »
^^^ That's a big thumbs up!

Had to purchase additional storage space just to keep it on the thread!

Wow!

;-)

holy crow.. i didn’t realize it was that large. it was just the one from an iphone keyboard. won’t do that again.

Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #156 on: January 28, 2020, 09:25:11 PM »
Thumb looks normal on my phone. Weird.

Tidied up some wiring and mocked up the radiator , one of the only pieces being used from a Dodge. Did I ever mention how much I dislike Dodges?


« Last Edit: January 28, 2020, 09:27:48 PM by KensAuto »
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Offline stlaser

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #157 on: January 28, 2020, 09:31:20 PM »
Thumb looks normal on my phone. Weird.

Tidied up some wiring and mocked up the radiator , one of the only pieces being used from a Dodge. Did I ever mention how much I dislike Dodges?



Nope, please do tell......  :tongue:
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #158 on: January 28, 2020, 09:34:56 PM »
Then the engine returns, hopefully for the final time.

I'm posting pretty much as it happens. So, this may take a while.
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #159 on: January 28, 2020, 10:06:10 PM »
that thing is 100% black.. may want to check for leaks  :grin:

Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #160 on: January 28, 2020, 10:54:07 PM »
Looks clean so far.
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Offline stlaser

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #161 on: January 28, 2020, 11:08:14 PM »
Ken, I expect this to be running by the time I get there......

And please help me meet up with H. I've had a crush on her since the first time she wore pant suits.     :evil:
« Last Edit: January 28, 2020, 11:53:29 PM by KensAuto »
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Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #162 on: January 28, 2020, 11:29:05 PM »
Haul? I would like to see screaming and kicking!
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Offline stlaser

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #163 on: January 28, 2020, 11:45:45 PM »
Haul? I would like to see screaming and kicking!

 :huh: Isn’t that what we see from Ken every time I mention him and H?  :popcorn:
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #164 on: January 28, 2020, 11:56:11 PM »
Thanks JR.

And Shawn, that's kind of a weird confession, and an even weirder place to do it.  :moreevil:
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Online Bigdave_185

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #165 on: January 29, 2020, 01:08:22 AM »
Ken do you own a pant suit?  You might want to put that away somewhere he can’t find or see it.  Don’t need him pulling out a dress up kit


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Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #166 on: January 29, 2020, 02:06:02 AM »
Him and her mao suits?

Pictures are a must!
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Offline America.Mike

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #167 on: January 29, 2020, 02:25:58 AM »
I wanted to get away from the plastic master, so I spent some time trying to sort that out.

The '85 Chevy version is cast, but only 11/16 bore...but...direct mount and proper rod length and geometry.

The Dodge is 7/8"... not even close. ..no way that smaller bore would work with the Dodge slave. (which is 1" bore )
I'm going to try a cast slave from a 91 Chevy 3500. I'll have to redrill the mounting holes and cut the push rod.
It has a 13/16 bore, for an .85:1 ratio, compared to the Dodge's .875:1 ratio.

With this setup I can get rid of the plastic line and o-ring connections... just hope it works.
I ran a Chevy slave also. Works perfect with the heavy clutch I run.


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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #168 on: January 29, 2020, 09:04:04 AM »
Nice adapter Mike. Thanks for the confirmation.
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Offline TexasRedNeck

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #169 on: January 29, 2020, 02:35:04 PM »
Get it right, people.  Hillary gets her suits from Kim Jong Un


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Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #170 on: January 29, 2020, 10:05:21 PM »
They are still Moa suits,,,,,,,,,
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #171 on: February 09, 2020, 06:34:42 PM »
I've hooked up the starter, flywheel, and enough wires to make it run. Was trying to spray weeds in the wind today and after killing all my neighbor's flowers, I decided to get the first new fuel tank ready to install.
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #172 on: February 09, 2020, 06:41:27 PM »
i just pulled mine! hahaha

Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #173 on: February 09, 2020, 06:42:32 PM »
Also received some beautiful GLO plastic diff covers, with horrible welds, and Bernie stickers on the inside.

 Okay, only one of those is true...

One of them is for the future D60 I have yet to rebuild. Now I have a good reason to do so.

Should give me time to send them to Don for a super paint job. On second thought, he has a history with diff covers. No offense boss...
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #174 on: February 09, 2020, 06:43:44 PM »
i just pulled mine! hahaha
Well that's dumb,  put it back in !!
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Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #175 on: February 09, 2020, 06:52:56 PM »
Go kill some more flowers,,,,,,,,,,,,,,,,,,,
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #176 on: February 09, 2020, 06:55:12 PM »
i just pulled mine! hahaha
Well that's dumb,  put it back in !!

they were empty and rusted inside. and too long for the short bed  :grin:

Offline Flyin6

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #177 on: February 09, 2020, 07:19:41 PM »
Also received some beautiful GLO plastic diff covers, with horrible welds, and Bernie stickers on the inside.

 Okay, only one of those is true...

One of them is for the future D60 I have yet to rebuild. Now I have a good reason to do so.

Should give me time to send them to Don for a super paint job. On second thought, he has a history with diff covers. No offense boss...
I heard that!
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Offline stlaser

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #178 on: February 09, 2020, 10:08:08 PM »
Also received some beautiful GLO plastic diff covers, with horrible welds, and Bernie stickers on the inside.

 Okay, only one of those is true...

One of them is for the future D60 I have yet to rebuild. Now I have a good reason to do so.

Should give me time to send them to Don for a super paint job. On second thought, he has a history with diff covers. No offense boss...
I heard that!

Funny, know what I didn’t hear? A 12v running.....  :tongue:
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #179 on: February 10, 2020, 05:42:03 AM »
Also received some beautiful GLO plastic diff covers, with horrible welds, and Bernie stickers on the inside.

 Okay, only one of those is true...

One of them is for the future D60 I have yet to rebuild. Now I have a good reason to do so.

Should give me time to send them to Don for a super paint job. On second thought, he has a history with diff covers. No offense boss...
I heard that!

Funny, know what I didn’t hear? A 12v running.....  :tongue:

i’m ducking for cover bc there are definitely shots being fired hahah

Offline cj7ox

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #180 on: February 11, 2020, 04:34:10 PM »
 :popcorn:
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #181 on: February 12, 2020, 09:26:14 PM »
Made some progress. Going to run it on 1 tank until I have time to replace the other one.
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #182 on: February 12, 2020, 09:29:59 PM »
ohh man.. so it runs and drives on off road diesel huh?!

Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #183 on: February 12, 2020, 09:33:07 PM »
So that's my next thing at the Ridge, diesel fuel. 5 gallon cans are getting old.

I have a bunch of 30gal plastic containers, but may go with a 55.
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #184 on: February 12, 2020, 09:33:52 PM »
It's not red fuel!

http://imgur.com/a/Ugm9foi
« Last Edit: February 12, 2020, 09:34:43 PM by KensAuto »
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #185 on: February 13, 2020, 07:02:38 AM »
vid gots no sound  :shocked:

Offline dave945

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #186 on: February 13, 2020, 08:45:07 AM »
Maybe it’s like the Prius hybrid, totally silent below 5 MPH.


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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #187 on: February 13, 2020, 09:18:30 AM »
One more time for the guys lacking an imagination. :)

Guess I made it public. The comments should be fun.

http://imgur.com/gallery/ZUHZzCE
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #188 on: February 13, 2020, 02:43:04 PM »
One more time for the guys lacking an imagination. :)

Guess I made it public. The comments should be fun.

http://imgur.com/gallery/ZUHZzCE

more better

‘all engines are 12 bolt’  :facepalm:

Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #189 on: February 14, 2020, 07:39:03 PM »
Installed the new hydroboost and sorted out the hoses. I used parts for an '86 Chevy 3500, and the pump is for a '96 Cummins.
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #190 on: February 14, 2020, 07:45:33 PM »
The only issue I had was that all hydroboosts, (to my knowledge) and their hose counterparts, are metric, with o-ring connections. A gear box on a '73 has flare fittings.

I had to cut off the end of the pressure line to the box, transfer the old line nut, and flair the end. Pretty easy.

After that the wires were taped and loomed, and heater hoses ran.
« Last Edit: February 14, 2020, 07:46:22 PM by KensAuto »
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Offline JR

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #191 on: February 14, 2020, 08:35:47 PM »
Looking good. I know they make adapters for the SB, but correct hoses are cleaner and better.
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #192 on: February 14, 2020, 10:16:47 PM »
I agree. Adapters just increase the chance of leaking somewhere.
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #193 on: February 15, 2020, 10:38:01 AM »
is that an external voltage regulator?

if so, i’d scrap it and go with transpo internal 1 wire regulator for the 2nd gen alt. just requires 12 volt switched to start charging. been on the kaiser for ~4k miles and even more idle time with no issue.

Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #194 on: February 15, 2020, 03:49:03 PM »
Yes. I cheated and just transferred that section of harness over from the donor since the alternator was in working order. Just trying to do it as quick as possible because I have other projects to do before summer.
...plan to straighten out bugs, etc. and build a front diff at another time.
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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #195 on: February 16, 2020, 10:33:36 PM »
I tried cleaning the donor radiator, because I like old school brass, and it turned into a sprinkler.
So now I have a china version. Oh well.

Going to try to stay with using parts like the radiator, hoses, etc from a second gen...in this case a '96 Dodge 3500.
« Last Edit: February 17, 2020, 08:23:50 PM by KensAuto »
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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #196 on: February 16, 2020, 10:41:08 PM »
Moved on to something more fun, like mounting the water to air intercooler.

After buying an entire box of 3" pipes, clamps and couplers from the Amazon, I wasted 2 hours trying to mount the cooler to the right fender. It was fighting the future air cleaner and 2 coolant tanks for the same space.

It now resides on top of the engine, but not mounted yet. No pipes needed. Only 2 silicone couplers and a soon to be built intake stub.

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Offline KensAuto

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #197 on: February 16, 2020, 10:48:04 PM »
The turbo outlet was pie cut a couple times to get it low enough to clear the hood (hopefully) and get the right angle. Just need to move the harness above the cooler.

I'm not going to make this permanent until I get the transmission in, in case I need to move the engine.

First pic shows how tall it was before the modification, and if rotated clockwise the angle was way off, pointing down towards the valve cover.
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Offline swbhobie16

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #198 on: February 17, 2020, 06:37:40 AM »
why water to air? limited space in the ‘73-‘80 core support? i’ve heard they’re smaller burb ever seen one first had to know for sure. where will the reservoir be? does it continuously flow?

Offline Flyin6

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Re: 12v Cummins Swap/'73 GMC 2500
« Reply #199 on: February 17, 2020, 12:17:29 PM »
That is really good work, Kenneth, and quite the imaginative engineer!
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