Hey Guys, I was wondering; I did the bubble test and i think i failed. I see foam in my radiator and the fill neck. Is my motor really blown or is it a figment of my imagination?

Thanks!

 

oh and is s4 and s5 shortblock the same?

Thanks!

 

IF you see bubbles in the filler neck, then the motor is probably shot. And s4 and s5 block itself is the same, but the front covers are different. You have to switch them out with the one from the correct series. Look in the tech section of rotaryresurrection.com for more info.

 

The short blocks are switchable with some work, but they're not the same.