Can it be saved

[midnightrider1818]

Got this 71 413 industrial I'm stripping down, Word is it should have a forged crank in it, I want the forged crank for my 63 413 build somebody stole the forged crank and put a cast in it. Yes this industrial 413 has the 6 bolt crank with the flange, question is though does the block look like it can be saved, I have never seen one with the cylinders rusted up as bad as this one, any ideas how to get the pistons out, looks like a real strong block, there is webbing everywhere on it

 

[PurpleBeeper]

The block is probably toast, but the crank is probably OK. I suggest you use a long, solid metal bar (rebar?) and drive the pistons up/out with a sledge hammer from below

 

[pnora]

Looks like a boat anchor to me.

 

[Nxcoupe]

Yes, use marvel mystery oil, trans fluid, etc, to let sit in the cylinders and dissolve the rust. I have used a small sledge and a chisel to get the pistons out, break them up. If it is a std bore, you can go up to .060 or so to clean up the bores. jmho.

 

[gkent]

Not worth the effort to save anything but the crank.

 

[QuickBpBp]

Anything can be saved BUT you will spend a fortune trying to save it. Plenty of other blocks out there. You will have to shatter those pistons to get them out...

 

[pnora]

What is the casting number? Post a picture of the back of the block and the main bearing area. Some industrial can be bored out to a 440.

 

[midnightrider1818]

What is the casting number? Post a picture of the back of the block and the main bearing area. Some industrial can be bored out to a 440.

I'll get the casting numbers next time I get on it, I'll get a pic of the back of the block, what part of the main bearing area are you talking about

 

[pnora]

I'll get the casting numbers next time I get on it, I'll get a pic of the back of the block, what part of the main bearing area are you talking about

The inside where the caps fit.

 

[33 IMP]

Put it in a barrel, fill it with molasses/water mix, cover, and let it sit for a couple months. See what comes out.

 

[nitro_rat]

Something mildly acidic like vinegar might be able to clean the rust up. I'd probably hit everything I could reach with a wire wheel first to get off all the big chunks. If all else fails, you can drill a bunch of holes through the tops of the pistons and break them up with a hammer and a drift.

 

[gkent]

I wouldn’t waste a dime trying to save that block.

 

[DanielSlocum]

Forged cranks are excellent as we all know. Chryslers cast cranks happen to be very good also. Cast is strong enough for most anything less than an all out race engine.
Some industrial 413 blocks have extremely thick cylinder walls and can be bored all the way to 4.32 which would likely clean yours up. Smash those pistons and try not to badly gauge the cylinders. You could even cut the rods with a torch to get the crank out if necessary. Good luck.

 

[Charlie Brown]

My 426W was originally a 413 industrial - bored .060 with lots of meat left.

 

[33 IMP]

Flip it over, and pull the pan. That'll tell you if it's got a forged crank, and help decide where to go next.
I'd still soak it in a barrel of molasses and water. Molasses is cheap in quantity at feed stores. Mix about 5 water/1 molasses, and let it sit. Can't hurt. You might end up with a usable block.

 

[rickseeman]

You might try Evaporust in the cylinders. The block might be able to be saved, but what would you have then? I was looking for a junk block for a project the other day. I called a friend to see if he had one. He said he had some 413 blocks. I said I hate to use a good block. He said nobody is going to build a 413.

 

[dvw]

Looks like most of it isn’t that rusty. But it got water in those bores. I’d wire wheel the bores. If you don’t see any cracks then I’d soak it. It might be fine. If you bore it to 426 it’ll take .063 to get to that point. Depends on how deep the pitting is.
Doug

 

[Don Frelier]

My brother has an industrial 413 in his car.
It was bored to 4.380", sonic checked and the walls were still quite thick.
It's a beast.

 

[33 IMP]

My brother has an industrial 413 in his car.
It was bored to 4.380", sonic checked and the walls were still quite thick.
It's a beast.

Almost TWO HUNDRED over? Wow.

 

[Thunderdan]

As other have mentioned, those bores/pistons will at least need a good soaking with marvel mystery oil, acetone, or a combination of different compounds, but the block can be saved. Industrial 413's are *thick*, but there's always a limit. A machine shop can determine the bore thickness with sonic checking and those are often known for going 1/10" over, but some of those might require sleeving and if that's the case you're getting into scrap territory. Further, there's always the challenge of finding pistons for RB blocks less than 440 size so $$custom$$ slugs might be the route which is even more cost. There's still a decent supply of 413's out there in motorhomes and industrial equipment for next to nothing so getting another might be tedious, but not expensive.