mark kibort

and whatever else can or could get damaged with the Trememdous forces required to bend a rod that beefy! I would measure everything around that area and then some before putting that engine back together. how did that happen? any guesses?

mark kibort

im sure i have that rod laying around. Ill check.

Ducman82

i have no clue. i just cleaned up the piston, no marks of any kind. skirt looks good, bearings look good. im at a loss for this. all other rods are straight at well. any time i have seen a rod bent, other stuff is toast as well. i checked the heads and valves i got with the motor as well, no bends either.

here are the numbers i got off the block, M28/22 82F06475

here are a few pictures of the bad boy.

GregBBRD

661 is just the matching number for the cap. Has nothing to do with weight.

My son has taken 5 4.7 engines apart in the last week, looking for a good block. The engines all came from 928 International. There are therefore, 5 sets of rods to pick from.

Weigh your rod (total weight without the bearing, but with the nuts) and let them know what weight you need. I'll pick you one out of the pile.

If you really want to make it easy, have them send you a matched set of rods, close to your original weights and then you won't have to worry about big end/small end weight matching.

GregBBRD

Only one way to do that...hydraulic lock.

Ducman82

so call 928Intl for the rods, or you have a bunch laying around? now i need a good scale.... hummm....

GregBBRD

The pieces belong to 928 International.

I'll tell Mark/Tom that yuu have a bent rod and either need one rod or a matched set.

If you'd like, send me a straight rod and I'll weigh it and them match it for you. If I can't get one that is almost exact, I'll let you know and then you can get a whole set from them.

Very easy.

Ducman82

email sent.

James Bailey

Liquids do not compress so if an injector leaks too much gasoline or a head gasket leaks coolant or if someone tries to drive through deep water and goes fast a wall of water pushes up on the front of the radiator and goes into the aircleaner intake runners ......for it to bend one or more of the other cylinders need to fire first before that one tries to compress . The engine will often come to an abrupt stop. Be locked up not crank until the liquid gets out ...like someone pulls the spark plug then cranks it. They often will then run OK for a while but the piston not being true in the bore and or the cylinder being bent soon leads to excessive blowby......All of which is why jumpering a fuel pump relay can lead to much bigger problems.

blown 87

yep

Jadz928

Man! That rod looks like something froma bad FEA analysis.

Great collaboration... sorry 'bout the rod.

LT Texan

Damn! Good for you. Me getting those little bast*rds out was an epic journey.

Ducman82

i kept filling up the hole the studs were in with PB all night till i wen to sleep. one was kinda tough, but i was able to get her out.

Ducman82

so i went and got a scale, each rod with the bearings (not wrist pin, i cant get it out) weigh 863 grams. thats with bolts and nuts and wrist pin bearing.

BC

No, I just mean a clamped resize - the way Jay at Taylor Machine (RIP) said he did it was to slightly cut down the mating surfaces of the rod pieces, and then re-size the big end hole to be perfectly round. This is AFTER you put new rod bolts in.