HARD-BLOK Treatment

[RacinDuallie]

Don't know much about a cummins application but thats exaclty what we did on my '49 JD pulling tractor, electric water pump running water through the head.

I meant head -not heads- it was early morning when I responded.....LOLop:

 

[9 LIVES]

Don't you have to have some sort of machine shaking the block to let it settle evenly?

 

[SINNER]

i used to use one of their products called hard-blok II "short fill" in sprint car engines. it is cement based but super fine composition and pourable when mixed properly. I think they made a product to use instead of water for mixing. to control shrinkage if i remember correctly.engines ran a good bit hotter until we used evans coolant in those things though

 

[9 LIVES]

Is using Hard Blok mainly for the sled pullers or does the dedicated drag racers use this also?