Originally Posted by marco polo

chip

I was told from Cosworth yrs ago that the 200 and Rs500 blocks flex round about 580 bhp and the normal 205 blocks flexes form 400 bhp

and may be this is what happend the block flexed too much and broke.

I recon the crank is bent aswell , now looking at the pics of the block

theres no way the crank has suvived it might look ok

until it's tested and put on the balancing machine

i bent a crank by spinning a bearing on number 2 main gernal

Rod

Best of luck with the rebuild

marco