Killed the 600

Well we when out with what we thought was all are ducks in a row but , lady luck said "NO" 2nd pass we had a piston fail , tough to tell but looks like a pin boss failed and let the rod and pin run free, AND CHANGE holes ! tough to tell with all the carnage , the piston is in to small of pieces, Oh well the 632 is just about ready !!!

and we worked on it hard

checked and rechecked

need another A460 block anyone have one that porosity that needed 8 sleeves as a big nitrous motor needed to have sleeves put in to start !!
Frank

that's the water jacket your seeing and I unbolted the rods as there were 2 in 1 hole , bearings were like new
Frank

Damn I hate to see this.

Shit happens,sometimes worse than others.  

Shit.... it will buff out! 

It sucks, but it's a good reason to upgrade!

Any chance the wrist pin went 1st?

Whose pins were you running?

Yep looks just like what you described the other night.   

the pins came with the pistons from Venoila ,their suppose to be a heavy wall tool steel pin ,172 grams , I'm thinking something happened to the pin boss and the pin did all the destruction as its shattered to shards . plumbing the 2 foggers on the intake for the 623 now
Frank

Are they straight or tappered?

straight
Frank

dang that sucks, happened to me in October, we a rod broke. Don't think I will run aluminum rods again

aluminium rods are the Only thing I run unless I Win the Lotto then it will be Titanium !!
Frank

pics of the carnage




something a sleeve and JB weld can't fix!!
Frank

looks to me as the piston vanished and we had a connecting rod going around at 9300 rpm with no piston cleaning house !!!
Frank

So what failed first? Piston? Cylinder wall? valve? Rod?

if I only knew!!!

this was  piston

Looks to me either the piston or the cylinder wall went first.

Looks exactly what happened to mine last October. Guy did a half track burnout and I was waiting on him to stage and felt a vibration in the shifter...........

This happened 1.06 into the 2nd pass on a fresh motor ,ie ; new rods and pistons !
Frank

Frank Merkl wrote:This  happened 1.06 into the 2nd pass on a fresh motor ,ie ; new rods and pistons !
Frank

Who knows,it's the life of a racer/engine builder. In the end it's all speculation. Unless the obvious shows it's ugly head.

dfree383 wrote:Looks to me either the piston or the cylinder wall went first.

x2......  

vote for the cylinder wall failed first.

Wow that's ugly like a Wart Hog in a Prom dress.