looking for a 8v71 detroit diesel engine for '61 PD4106

wobbleman · May 07, 2021, 12:05:16 PM

Re: engine for a 4905 in central PA

I believe I have the same problem and will probably need to swap in a new engine in my 4905A. Any info on the engine in PA mentioned?

Also: what would you expect to pay for one?

matzeinusa · May 08, 2021, 02:27:55 PM

The one in MI was $1400 turbo without transmission.
Contact cheesie directly for the PA one.
Matt

Tedsoldbus · May 08, 2021, 03:57:26 PM

Damn Matt,
Us none mechanics know to shut up and watch the wizzards try to help you. But know that we do watch with great fascination hoping to learn something. I was sure someone would pull a rabbit, or motor, out of their hat. I will have to be nicer to my 6V92 if motors are drying up. And now a moment of silence as another asphalt annihilator sadly goes off the active bus rolls.
Best of luck finding another bus.

richard5933 · May 08, 2021, 05:52:51 PM

Maybe I missed something, but is the bus otherwise in good shape? Or is it so bad that there is no point doing an in-frame to bring it back to life?

Dave5Cs · May 08, 2021, 06:23:42 PM

Matt have you tried these guys in West Sac. They had a 4106 that they rebuilt years ago and the guy never came back. Don't know if they still have it but I know they have 2 strokes or may know who does.
https://www.valleypowersystems.com/

freds · May 09, 2021, 01:36:17 PM

If they can't do an in-frame what is the differences between a LH and RH engine? I would think:

1. Cams
2. Starter
3. Blower

Could they not be transferred between the original and replacement engine?

luvrbus · May 09, 2021, 02:47:01 PM

Cams,oil pump;idler gear and starter if you have the right crank shaft the blowers are the same

wobbleman · September 03, 2021, 04:53:06 AM

Sounds almost exactly like my own situation (1978 P8M4905A).

I assumed that opening all the draincocks would drain ALL the coolant. It did pop a freeze plug but now I'm seeping coolant into the oil, so either a crack or seals. I had also overheated it, driving the long road up to Taos NM ,and had to change the top head gasket. Probably did some damage then, too.

One question: I read that these buses were designed so the engine could be changed out it a few hours. Is that right?

Whoever posted that it makes more sense to start over... I hate to admit it, but you're probably right. I only Paid $2500 for it 10+ years ago.

Anyone have use for a decent shell, CHEAP? Located in NY State. Previous owner worked for Grumman, assembling aircraft and did a beautiful job on the alterations he made to the skin- can't even tell they aren't original!

And I cringe to even mention it, but what is my approximate scrap value?

Wobbleman