the thing is these just came back from the machine shop. $2800....he should have done this when the rods were resized no? Not when its final cleaned and oiled. I'm ready to put this in my engine to find this. It came home and went in the closet till now wrapped up in a box. now I gotta sand the rods with the pistons on and try to make it clean again.Those rods look a little rough like they've been tossed around or handled carelessly which is common. Big John has some good advice for checking the sides.
Is the step on the machined surface...as in the cap is not aligned? I can't see anything in the photos.
After scuffing, make sure that the rods are absolutely clean before installing the bearing shells, including the cap mating surfaces - make sure no proud points there, too. Scrub them with solvent and a toothbrush, blow them off with brakeclean. There's probably grit left over from the resizing operation at the shop too.
You should consolidate all of your posts on this engine into one build thread so we can see the progress from start to finish.
maybe later. some of these posts I hope to get angers for I got the parts in my hand and need to get this engine done.You should consolidate all of your posts on this engine into one build thread so we can see the progress from start to finish.
I'm wondering did the factory do that?did the shop do that when they resized the rods?All those are is a notch for the bearing tangs to keep them from spinning.
As long as the the tang fits so the bearing shell is seated, you're good.
The notches are factory. Did you look at this stuff when you took the engine apart?I'm wondering did the factory do that?did the shop do that when they resized the rods?
it was never apart before so I'm wondering whats going on there
It kind of depends... Some shops don't like to do much with the sides of the rods because it increases side clearance on the rods... Especially if the crank has been ground and the sides of the journal were "touched up". There's a spec'd width somewhere, but the bottom line is the total clearance needs to be .009 to .017". I didn't find the nominal width listed in the FSM, but I think it's around 1.015" or something like that. (don't quote me on that one).If your machine shop does quality work, they will dress the side surfaces as well.
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I had to rebuild it. It was tired and had a lip on the cylinders.The best I can tell by these various threads is a running engine was pulled, that in my opinion just needed to be cleaned up and gaskets replaced and now there is a large machine shop and parts bill and anxiety over possible problems when the engine does get put back together.
Never did understand why folks are so quick to jump in and rebuild an engine for no other reason than to say they rebuilt an engine.
My advice has always been, run it until it stops then worry about it.
The notches are factory. Did you look at this stuff when you took the engine apart?
Here's your lesson... As you take apart an engine that you are going to be rebuilding, you want to look at everything. In this case, were any of the rod bearings spun? Probably not because the bore on the con rods won't be easily repairable. If they didn't spin from all the street miles, they aren't going to now.I did not study the notches. the engine was filthy too.
Here's your lesson... As you take apart an engine that you are going to be rebuilding, you want to look at everything. In this case, were any of the rod bearings spun? Probably not because the bore on the con rods won't be easily repairable. If they didn't spin from all the street miles, they aren't going to now.
Just looking at the bearings as the engine comes apart can tell you volumes about it... and tell you if this engine (or crank, rods etc.) is something you want to rebuild. You always want to start with the best core to rebuild. There's a lot of books out there and a lot out on the intrawebs. Look at engine builders web sites and take anything from a forum (including this one and anything I write) with a grain of salt until you can verify the answer with more reliable sources.
Some reading on the subject... https://www.mahle-aftermarket.com/m...b-2-1114-engine-bearing-failures-brochure.pdf