I found out today that my overheating was not only due to a blown head gasket but also a cracked block that is allowing pressure into my coolant system. Can anyone recommend an alternative to replacing the whole block? (Some sort of stop leak or whatever) If not then I will scrap it and get into something else.


Thanks for reading

 

Engine is a boat anchor, sorry man.

What year is your DII?

 

Yep. you need a new motor

 

You could take out motor heat block pull sleaves tig weld block resleave put back together & it's just like it never happend .

 

I've always wondered about these epoxy glues that they claim can seal a crack in an engine block.

Not that I would want to risk testing it myself. :-)

 

Start looking for a replacement engine, there are no real fixes that are affordable.

 

I'm not sure if they can do a stich weld on it, depends on the length and location of the crack. What they would do is drill a circle at the ends of the crack to stop it from spreading, then along its length... push in stopers in each plug then weld it shut. I've seen this done commonly on iron diesel blocks, and only a handfull of people do it. I'm sure any machine shop could, but doubt many would be willing to give it a shot on someones car, especially if theyve never done it before.

Dodge Truck Cummins Block Crack

http://www.stamey.info/truck/cummins53blockfaq.htm

i cant recall if disco motors are all aluminum, or alum block with iron heads, or iron block with alum heads. would also depend on where the crack is, the length, shape and it its in a stress or pressure bearing area, and if its even accessible. if its in the motor, the price to remove, strip, ship, weld, rebuild and get goin might be more expensive then just gettin a turn key drop in

 

duct tape. lots of duct tape.

or just buy a new engine from a pick and pull. either a 4.6 rover v8 or do an om617 conversion.

 

Rover engines are all aluminum, and properly welding a block behind the liner makes no sense at all because you will need to machine the bore again to put the liner back in. At that point, you should just go with top-hat liners which according to JE Robinson will fix the problem by itself: https://landroverforums.com/forum/di...obinson-52659/

Of course, now you are well into this project for some serious money. A much more cost effective approach is getting a used motor and doing a minor rebuild (head gaskets and machining the heads, gaskets and seals, oil pump, timing chain). Alternatively, you can get a shortblock or longblock already built with top-hat liners. Which way to go depends on the condition of your truck.

 

4.6l stroker kit, custom ground cam my vote