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1965 Unimog 404s
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Discussion Starter · #1 ·
I just installed the propane conversion kit I got from K.C. Carpenter on my 404s, and the results are SUPER. It runs better, smells better, and has more power. And the kit is right on, with everything you need (minus a tank). All hoses, clamps, etc., and he'll sell it to you for under $600.

On tanks, I went to my local tank supply company and picked up two 30 lb. steel forklift bottles for $125 (for bother). Hooked those up and it ran like a champ.

I just have a couple of notes:

1. (I had to call K.C. to find this out) You need to remove the oil bath air filter in order to mount the regulator/converter. If you don't, I have no idea where you would mount them, since there's little room under the hood.

2. Related to #1, I went down to my local AutoZone, and they had a $25.00 cone air filter (with chrome - I'm blingin now) and a flexible/extendable air cleaner routing hose ($20). With these two and a couple of clamps, I was able to get an air cleaner hooked up. I think I'm going to get another extension and then I can basically have a deep water kit by mounting the air cleaner to the mirror.

That's it. If anyone else is considering a propane conversion, GET THE KIT FROM K.C. The price is right, and it's got everything you need.

-- Frank
__________________
Some pics of my mog:
http://pg.photos.yahoo.com/ph/exactl...XlXuEBfLDutfho
 

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1964 404LF8TS Firetruck
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1 Posts
ncmogger said:
I just installed the propane conversion kit I got from K.C. Carpenter on my 404s, and the results are SUPER. It runs better, smells better, and has more power. And the kit is right on, with everything you need (minus a tank). All hoses, clamps, etc., and he'll sell it to you for under $600.

On tanks, I went to my local tank supply company and picked up two 30 lb. steel forklift bottles for $125 (for bother). Hooked those up and it ran like a champ.

I just have a couple of notes:

1. (I had to call K.C. to find this out) You need to remove the oil bath air filter in order to mount the regulator/converter. If you don't, I have no idea where you would mount them, since there's little room under the hood.

2. Related to #1, I went down to my local AutoZone, and they had a $25.00 cone air filter (with chrome - I'm blingin now) and a flexible/extendable air cleaner routing hose ($20). With these two and a couple of clamps, I was able to get an air cleaner hooked up. I think I'm going to get another extension and then I can basically have a deep water kit by mounting the air cleaner to the mirror.

That's it. If anyone else is considering a propane conversion, GET THE KIT FROM K.C. The price is right, and it's got everything you need.

-- Frank
__________________
Some pics of my mog:
http://pg.photos.yahoo.com/ph/exactl...XlXuEBfLDutfho
Have you run a cost compairison on your conversion to Propane vs gas?

How are to Propane prices and availibily vs gas?

I'm wondering if it be worth it for me to make such a modification to my LF8TS.

I have a junk Carb and have to do a complete replacement instead of rebuilding.

Regards,

bullyhys
 

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1969 Swiss Unimog 404s
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8 Posts
Here goes an attempt at resurrecting and ancient thread. Does this kit from K.C. Carpenter still exist?
 

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85' U1300L Holset Turbo VA A/C, 66' Propane 404.1 rock mog, 1975 416 Doka, G500, Volvo C303
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5,255 Posts
That would be my kit. Only part no longer available is the adapter to rotate the carb.
 

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85' U1300L Holset Turbo VA A/C, 66' Propane 404.1 rock mog, 1975 416 Doka, G500, Volvo C303
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5,255 Posts
I may be able to provide one later on this year.
 

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1963 Unimog 404
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132 Posts
I have a design for said adapter. I have installed this kit on my mog but haven’t finished reassembly because i’m tinkering with a bunch of other stuff. I made it thin enough to fit the same as the gas carb, but had to add spacers for the nuts because the studs aren’t fully threaded.
2617155
2617156
 

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1963 Unimog 404
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132 Posts
The opening on the propane carb is a bit larger than the opening on the gas carb, so the adapter is sized accordingly for a seemless transition and maximized air flow. I received a few messages asking if I will sell the cad file... i will not sell it. But i will gladly give it to anyone that wants it fo free! You can have your local machine shop fabricate it for you or you could even 3D print it from a high temp plastic like PEI or PEEK. If there is enough interest, I will have a batch of them made and sell them at cost. I’m not interested in making money from this. I’m just pleased to contribute back to the community that has helped me so much.
 

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The opening on the propane carb is a bit larger than the opening on the gas carb, so the adapter is sized accordingly for a seemless transition and maximized air flow. I received a few messages asking if I will sell the cad file... i will not sell it. But i will gladly give it to anyone that wants it fo free! You can have your local machine shop fabricate it for you or you could even 3D print it from a high temp plastic like PEI or PEEK. If there is enough interest, I will have a batch of them made and sell them at cost. I’m not interested in making money from this. I’m just pleased to contribute back to the community that has helped me so much.
I would LOVE this file!! I own a machine shop and just purchased my first Unimog 404. I love it.. I have a kit coming from GotPropane.com is this the same kit? Has anyone noticed a major loss in power by switching to propane? My kit comes in tomorrow. I made the decision to switch due to all the fuel issues. Let me know if you’re able to send me the CAD for your adapter. In return I’d gladly machine a part for you. Thanks again!
 

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85' U1300L Holset Turbo VA A/C, 66' Propane 404.1 rock mog, 1975 416 Doka, G500, Volvo C303
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What ever Got propane is sending you will not work with the parts I used to sell including the aforementioned adapter. They oversize the carb and other parts a lot.

I will leave it at that.
 

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What ever Got propane is sending you will not work with the parts I used to sell including the aforementioned adapter. They oversize the carb and other parts a lot.

I will leave it at that.
Good to know. I'll purchase the kit that you recommended from another post I found this morning. Thank you for saving me haha.
 

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1963 Unimog 404
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132 Posts
I would LOVE this file!! I own a machine shop and just purchased my first Unimog 404. I love it.. I have a kit coming from GotPropane.com is this the same kit? Has anyone noticed a major loss in power by switching to propane? My kit comes in tomorrow. I made the decision to switch due to all the fuel issues. Let me know if you’re able to send me the CAD for your adapter. In return I’d gladly machine a part for you. Thanks again!
I searched for the file a while back and couldn’t find it. I know I have it somewhere, it will just take a bit more digging. If I can’t find it I’ll just recreate it. Feel free to message me this weekend so I don’t forget.
 

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I searched for the file a while back and couldn’t find it. I know I have it somewhere, it will just take a bit more digging. If I can’t find it I’ll just recreate it. Feel free to message me this weekend so I don’t forget.
[/QUOTE
I appreciate it! If you can’t find it, no worries. Thanks again
 

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Where can I find the ball stud that fits the oem receiver for the throttle? I’m struggling to find this part. Thanks!
 

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85' U1300L Holset Turbo VA A/C, 66' Propane 404.1 rock mog, 1975 416 Doka, G500, Volvo C303
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5,255 Posts
On my kit you simply reuse the lever from the zenith carb. The lever comes off and slips perfectly over the propane carbs throttle shaft over the new lever. Then you drill a hole through an existing hole on the old arm through the new arm. Then install a screw to clock them together.
 

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1963 Unimog 404
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132 Posts
Where can I find the ball stud that fits the oem receiver for the throttle? I’m struggling to find this part. Thanks!
I wanted to keep my system easily reversible so I purchased a new ball stud at Midwest Bayless. I can’t recall how I found them, but the part I received worked perfectly.

 

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85' U1300L Holset Turbo VA A/C, 66' Propane 404.1 rock mog, 1975 416 Doka, G500, Volvo C303
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5,255 Posts
Great to get a new ball, but the method I use is 100% reversible as you do not modify the zenith lever arm at all. You just use an existing hole in the lever.
 

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1963 Unimog 404
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132 Posts
Doka, do you have a picture of how you did it? After rereading your description, i understand better. That is pretty clever. I also considered replacing the ball receiver with a clevis fork.
 

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85' U1300L Holset Turbo VA A/C, 66' Propane 404.1 rock mog, 1975 416 Doka, G500, Volvo C303
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5,255 Posts
I tried to find one but came up short. Pretty sure my engine covers are installed at the moment, but next time I’m at the hangar I will see if I can get my camera up there without taking truck apart.
 
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