You cannot resleeve a 7.3 because there are no sleeves. The block is all iron. Just so you know.

 

i havent seen a 7.3 reslevesd but i have seen blocks without factory sleves resleved.

 

That would of course depend on the severity of the crack and it's location.

As for a 7.3 it would be cheaper to get a rebuildable block then have it sleeved.

JMHOs

 

i agree, and it usually is, unless its an original # matching car with a hemi

 

Crapola!!! was hoping you would prove the dealership wrong....oh well....least u'll be good for another 200 300k hopefully after all is put together!

 

The truck is at my shop.

I put a known good oil cooler on instead of rebuilding the one he had. Pressurized coolant and it took forever with the hand pump and now I know why. It dropped from 16psi to 0 psi almost immediately, taking less then 30 seconds. So I hooked up 12psi of shop air to it and you can clearly hear it bubbling somewhere in the front and then hear the air escaping out of the heads (crank case). The air is coming out of both heads and it doesn't matter where the pistons are the air pressure is still escaping. That's leaves me about 99% sure it's not a cracked cylinder, but it could still have a crack in a cooling passage.

I believe it's either a cracked block or cracks/holes in front cover. No further diagnosis can be done until the engine is out.

I should be able to start pulling engine this week since all 4 of my stands are full right now. Need to get a little further along on Todd's engine and another one so I can free up at least one engine stand lol.

 

That can't be all bad for you Marty ( all engine stands full ) Hope you get it straightened out for him

 

I just read the whole thread.

A few things. It's not a headgasket... STOCK 7.3's just don't have that issue.

You always think "this is going to be the one" and it never is... it's allllwwaaayyyyssss something else.

It's not the oil cooler. Very ingenious way to test it Tom. I couldn't quite visualize what you were talking about on the phone, but now I do!

Originally I thought maybe it could be an "unseated" injector cup. Not a cracked injector cup (fuel in coolant), but an unseated one. I have only EVER seen that one time.... but after seeing how quickly the air pressure made its way into the crank case, there is no way. Plus this is some SERIOUS mixing of coolant/oil. BTW, usually the injector cup cracks vertically.


I hope it's just a front cover issue (holes/cracks). I just sold my last 99+ front cover but I'm sure I can find another.


PS... about "re-sleeving" a 7.3. They are not sleeved from the factory, but can have a sleeve installed. Usually once you do more then 2, it's not worth keeping the block anyway. Each sleeve costs ~$150.00 + machining/labor. Might as well start with another virgin block for the price.

 

LOL, guess not. But one is mine and I'm still just waiting on parts for it

Anyway, parts just arrived for another truck.... time to head back to the shop, no internet.

 

You can have the Cooler Tester ! I'll give it to you when I see you . I won't be using it .
Glad you stopped in Marty.
I wanted to let everyone know who has the truck

 

Well I started in on it cause I got bored when I hit a road block with the other engine. I got one stand freed up so I guess I'll be doing a whole lot more work on it tomorrow

 

I sure will be glad to know whats wrong with the truck.
Had to get "old reliable " back on the road
Thanks again for all the help

 

heck that ones allot nicer, i would just sell off the ex if i had that. give it a paintjob and make it nicer.

 

It don't need a paint job, shoot it's already a nice two-tone

 

Engines out Wooo Whoooo