I measured the main and rod diameters of the crank and got the following:
So #3 and #5 main journals are 0.0002 out of spec, but I'm thinking my micrometer is probably slightly off, so I think I'm good and just need to get new bearings?
Any recommendations on where to pick up 0.010 over main...
I got the heads and block face sanded over the weekend using that granite tile. Spent about 1 hour on each surface. Not perfect, but a lot better than it was before:
I took a closer look at the rod bearings:
All 8 are showing wear from the compression stroke. I'm guessing I should...
I got the reamer today and it sucks. As many of the reviewers stated on Amazon, it cuts a taper there's really no way around it, even following the sage advice from that one reviewer. There's this little plastic tab on one end of the cutter that forces the taper:
So this is the angle it...
My 89 had factory air (at least I'm pretty sure it does since everything looks stock inside the cab). Here's the compressor bracket before I started taking it all apart:
Looking at the replacement engine I picked up, I to see the compressor bracket arrangement is different:
Nice catch...
Was able to track down crank and harmonic balancer sleeves for reasonable prices. Rear crank:
Harmonic Balancer:
From what I can tell, you use the include cap to tap them in place, the break off the lip.
On the block heater hole, I read that those rubber Dorman ones can pop out after...
One interesting thing I noticed is that the serial number of the original engine in the 89 F350 truck was 649677 and the serial of the 89 F250 donor is 638837, so a delta of 10,840. Door sticker on the F350 has a 12/88 date code, so I guess it was a pretty early 89 truck. Makes me wonder how...
Gave the heads the scrub down with degreaser and power washing, dry with leaf blower, then compressed air. Looks a ton better now:
As with the block, not perfect, but good enough for what its for. I did notice cracks around all the glow plug holes on the compression side:
Is that...
Yes, I read the reviews. I'll be sure to follow the advice of those that did get it to work. Should be here Thursday along with the hone attachment. My challenge in the past with an electric drill hone tool is that the drill won't go slow enough to make a a proper 45 degree angle. I think my...
I once picked up 5 MEP 802A 2 cylinder generators with Lister Petter diesel engines that had been sitting for years with water in the cylinders. They started out like this:
And cleaned up to this after soaking in Evapo-Rust for a few days:
Reused the pistons and put new rings on them and...
@IDIBRONCO Thanks for the advice again. I'll clean up the hole and get a new o-ring.
@XOLATEM You're very welcome! And good idea about a drip pan.
Spoke to machine shop that caters primarily to rebuilding diesel engines and he quoted me about 4 hours max @$110 to run a ridge reamer, hone...
Thanks for the education on freeze plugs on the IDI! Didn't realize they were special. If I take the block to a competent shop for the re-hone, hopefully they would have the tool, especially if they work in IDI engines, although I'm guessing that's becoming more scare these days.
Only reason...
I think I'm going to compromise and clean the engine myself, but take it to a shop to ream the ridges and give it a hone.
Got the oil cooler, crank and camshaft out this morning along with the squirters. I than rolled the block outside and sprayed it down with some degreaser:
Worked it into...
Thanks for the feedback @IDIBRONCO
I worked a little more on it this evening. Pulled the balancer and found it had quite a groove in it:
Same thing with crank, probably a bit worse actually:
Is there anything I can do about that, like maybe now press the new seals all the way in so...
With the pistons out, I took a closer look at the bores. No major scratches and the ridges are minimal as mentioned before as the pistons were easy to pull. I did pour some Evapo-Rust in the bores where the surface rust was showing, but it slowly drained over about 6 hours. Did get rid of...
I'll defer to someone more qualified to answer that @The_Josh_Bear. This is my first time wrenching on a 7.3 IDI, although I got 2 under my belt now. :)
Got the engine transferred to the stand and drained the oil out of it. Not a hint of coolant, just very dark motor oil as expected with any...
Pulled the heads and took a look at the bores/pistons:
All 8 are already 030 over. :( So the 220k miles are definitely not original.
And I have no idea what happened to the #3 piston:
When I took it apart, I noticed the valve cover bolts were only finger tight, ditto on the intake...
Been busy with other projects, but have turned my attention back to this one now. Went and picked up a core from the junkyard for $500. It came out of a 89 F250 and supposedly had 220k on it.
Here she is:
At least this one has the clamps on the fuel lines...
As I started tearing it down...
@46Gunz Thanks for the link to the OX locking Diff! I figured someone would make one.
@Old Goat Yep, that's how I configured mine. I guessed right!
Chain is well worn in the position that opens the tail gate just a little for dumping gravel too:
Here's the beginning of the dirt pile...
He wants $2,500 for that 94 7.3 and its still sitting in the truck. So I think I'll pass. I plan to go look at the 2 for $900 or $500 each next.
@Old Goat For sure I'll be going downhill spreading the gravel! Fortunately the house/main road is at the top of the hill, not at the bottom. I...
Appreciate the feedback. Yeah, I'll pass on that burnt F250 with its various modifications. I'll call tomorrow about the 94 7.3. If he's asking $750 or less, I think that's the one I'll pick up. Otherwise, I'll go look at the 2 for $900 deal. If one is clearly in better shape than the other...
I did call around Friday to various junk yards and found the following 4 within 60 miles of my location:
The first 2 are about 40 miles away at the same location. He said he would take $900 for them both. They are complete and have been sitting in the warehouse for the last 3+ years. He...
Rear axle is clearly not original for a F250:
He converted it to a hot shot years ago and used it for highway hauling. So probably lots of miles...
It is 4x4:
Since the rear axle is not original, I'm not sure the front one is either. But it appears to be a Dana 60 with knuckles...
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