lol sometimes the hassle to have them fix it isn't worth the hassle.

 

not really the rods are designed so the big end bearing tangs are away from the thrust side to do it correctly you have to remove the pins and turn the piston only

 

It looks like the valves touched the pistons in the picture.

 

"touched" is a bit of an understatement.

 

Holy *****. That sucks. I couldnt tell if it was carbon build up or what. But yes, the dots on the pistons should point towards the water pump side. Im not sure if someone mentioned that already. Looks like you have some work ahead of you.

 

wrong. rods can be run in either direction. PERIOD. they are not offset in any way. you can run two tabs forward and two tabs back if you want. only thing that matters is orientation of pistons.

 

allready spun them 180 and lapped in a new set of intake valves. guides were marginal but still ok. just waiting on a -4 oil feed fitting.

 

disagree on the rods they are put that way for a reason

 

and you are wrong. rods are symmetrical. tabs are put in the rod to hold the bearing in place, they have nothing to do with orientation.

 

Don't the rods have a squirter that needs to be oriented so that it faces the higher loaded piston thrust face (in this case the backside of the engine).

 

and you are not right and to keep the tabs away from the thrust side stop the bearing turning

 

the physics put the load in the axis of the rod. i doubt the rod angle gets steep enough to put the load on the tangs. but i have no proof, data or experience either way but what i can tell you is that my car is a totally different animal. idles smooth no leaks, other than the scab weld i knocked off the radiator. shocking that it didnt grenade sooner. can't wait to blast it.
double dot btw the squirters are in the block. if your talking about feed holes i noticed no difference.

 

You are right, the cylinder pressure loads never actually push the crank against the tanged section of the rod. It rides over that location due to inertial loads, but those r much less. Also if u look at a V engine, rods face both directions, and the tanged side see different inertial loads left bank to right bank (normally its a small difference).

As for the squirters, I know the ones in the block shoot up into the actual piston cavity. I was talking about the oil drilling in the rod (see picture of the stock rod in the link). The drilling in the rod shoots off to the left from the large end bore

http://www.tscomptuned.net/_images/a...n/stockrod.jpg