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1 year 3 months ago #221121 by 1951D2
Replied by 1951D2 on topic slow progress
I was able to find a running gear that I modified to put the engine on. I have a few pictures on what I have been doing off and on between work and remodeling the house.



I took and modified a anhydrous running gear and then added another axle so it would carry the load better.


I have been working on this at a place other than my place. after cutting all the extra stuff off and getting it down to a weight I could handle, It was time to pull it home where I can finish it this winter. I pulled it with the service truck and was able to scoot along at about 25 MPH. Took me one and half hours to get home ,in all it went real well.

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1 year 3 months ago #221143 by edb
Replied by edb on topic Great Trailer
Hi 1951D2,
looking good and a lot of work goes into making such devices BUT, I would suggest that when run the engine needs to be fairly level and not high one end--unless it was uneven ground where you took the side on pic.
Some packing under the rear of the engine bed should get you there.
Best Regards,
Eddie B.

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1 year 3 months ago #221145 by catskinner
Replied by catskinner on topic 398
Well, Houston, we have a problem. My serial number book only lists 3 years for the 398, 66B 6498 engine. 1964 146 -
1966 1364 - 1373 Recheck your numbers again to make sure they are right. That is all I show for the 66B series. catskinner

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1 year 3 months ago #221245 by 1951D2
Replied by 1951D2 on topic Serial # plate.


I f you cannot blow it up it shows 66B 6498
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1 year 3 months ago #221264 by 1951D2
Replied by 1951D2 on topic 398
edb, this picture is quite deceiving, it is not as un level as it appears.

this unit was stuck and I was not sure if it was going to be a runner with out tearing it down. I put a little torque on the front shaft and then went in to the inspection cover and put some pressure on the ring gear with a bar. To my surprise it popped loose with very little effort. I then pulled all the glow plugs and barred it over two revolutions and was satisfied that there was nothing that should be a problem with putting some air to it. I should explain that the previous owner had his guys put some diesel and penetrating oil, and loose juice in all the cylinders.

I got my big air compressor hooked up to it with only one tank that is in the photo. I just bumped it short bursts at a time to start with. It was raining black soot and what ever was all in the cylinders coming out of the glow plug holes. Guys think of a glow plug hole ,and a six and a quarter inch piston pushing this crap out of the hole. All I can say is it shoots a long way up in the air. I sure glad I didn't have anybody watching, there was sh.t everywhere. I can laugh now. after doing this for some time I decided to give it a whirl and see if I could get some smoke.

Now don't get excited with what you will see, but my neighbor came running over and wanted to know what was on fire. I can only imagine what was trying to burn inside the cylinders.



This was about five seconds after it started to fire up and lasted about twenty seconds
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1 year 3 months ago #221267 by ag-mike
Replied by ag-mike on topic 398
Some maxium AWESOME there. Video soon? good luck with ur projects.

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1 year 3 months ago #221281 by edb
Replied by edb on topic Start Smoke
Hi Team,
fairly normal for one of those cold beasts--albeit a bit more white due to the extra juice you mention.
These engines with air start, or other and not fitted with glow plugs are usually kept warm with jacket water heaters for a true black smoke start.

Great to hear you had success getting her to run--enjoy the moment--electric gen. sets that start and run at full rpm are rather exciting all the time praying that the governor will catch them--especially for a first start after rebuild--two people standing by with kill plates, one at each turbo inlet--air cleaner panels removed of course--

Ah the Memories of load testing and commissioning gen. sets.

The natural gas versions were a quiet running engine compared to the diesels.
Just as an aside the D399 and G399 engines had different firing orders and so had different camshafts.


Cheers,
Eddie B.

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1 year 3 months ago #221287 by neil
Replied by neil on topic 398
That's interesting Eddie, did Cat state why the different firing order? I'm a huge fan of large gas engines and I'd love to see a G3408 or similar powered truck. I think it would just purr - no smoke, and a smooth get-away.

Cheers,
Neil

Pittsford, NY

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1 year 3 months ago #221291 by edb
Replied by edb on topic 398
Hi Neil,
they did say but I now do not recall, maybe it was to do with balancing the draw on the inlet manifolds with gas carbies restricting the inlet mixture and or the firing order--which likely is not an issue for a Diesel.
A short life span of magneto's and spark plug servicing was the main bug bear of gas engines--especially some of the dirty/contaminated gas available in some land fill gas engine sites.
Sometimes we needed to alter the oil additive packages to suit some gas fields or even draw points on the same field--also had to play with valve seat angles to help overcome valve recession or buildup of contaminants if not enough valve seat angle--sometimes only needed to change a quarter or half a degree from the usual 22 degree (if I now recall correctly, too long ago now) used on most gas engines.
I stand to be corrected.

Cheers,
Eddie B.

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1 year 3 months ago #221305 by neil
Replied by neil on topic 398
Interesting. Nowadays there's the option of port fuel injection for any size motor if it's running on a liquid fuel so cylinder starvation would no longer be an issue. For larger engines, I've heard where folks just double up injectors to get the nominal capacity, and the FCM drives both injectors per cylinder just like it would drive a single injector. I wonder if there are any kinds of additives available to combat the valve seat recession in an NG-fuel machine, or if it's solved simply with additional valve seat hardening?

Cheers,
Neil

Pittsford, NY

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