Need to replace my camshaft, advice on options for longevity and efficiency.

From what I remember, Mother CAT uses 0R numbers to denote a reman part.

Very true about CAT wanting a lot of stuff back for core. Make darn sure you put the core in the new part's box! They won't accept it otherwise.

I bought 6 cylinder kits for mine and they wanted the old piston de-ringed, bearings removed and the piston/rod put back in the liner. I'm 99% sure the only part they re-use is the rod and cap but who knows?

 

That is what I thought about the OR prefix but when I Googled it I did not find that.

 

Looks like I replied at the wrong place. I have used PAI inframe kits with no problem. I do not thank they do injectors.
Sometimes the more I stir around this these posts the worse I get. Good luck with what you are doing.

 

Clean the tip of the injector with a brush BUT, DONT NOT TOUCH THE ORIFICES ON THE BOTTOM OF THE TIP WHERE THE FUEL COMES OUT. At least that’s what my Cat guy told me when I was cleaning mine to install the new o-ring.

 

I personally would get a new set of 58’s. And drop a 1LW 550 brakesaver file in it. Stock cam wouldn’t matter, you’ll still get enough Hp out of it. And you gonna need more wind, stage one Borg Warner, they use a different number now but it’s the same turbo upgraded I believe.

 

Trying not to go down a rabbit hole on this one! First, from Cat reuse and salvage guidelines on Camshaft and rollers.
During normal engine operations, the mating surfaces of each camshaft lobe and tappet or follower establish respective individual wear patterns. If a tappet, or follower is switched to a different location in the engine, the established wear patterns on the camshaft lobes may be incompatible. This could result in premature wear to either the camshaft and/or tappets. Remember the following four items for evaluating the reusability of tappets or followers.

1. If a camshaft is used again, make sure that the original tappets or followers are installed in the original locations or replaced with new tappets or followers.
   
2. New tappets or followers and used tappets or followers that have a normal, smooth wear pattern can be installed with a camshaft that is used if the camshaft does not have wear on the camshaft lobe that can be easily seen or felt. Caterpillar recommends installing a replacement camshaft if the tappets or followers or the camshaft has heavy wear.
   
3. Tappets or followers can be reused with original camshaft if in "like new" condition. Used tappets or followers cannot be installed on a new camshaft. Do not use any tappets or followers that operated against damaged camshaft lobes.
   
4. A tappet or follower is wearing normally if the wear surface has a “mirror-like” texture. The dull appearance of the contact surface of the tappet or follower could indicate rapid wear of the tappet or follower and camshaft and the tappet or follower should be replaced.

Camshafts with Lifters
When reusing an original camshaft and lifters, the lifters must be installed in the original location and original orientation. Do not use any lifters that operated against damaged camshaft lobes. Used lifters cannot be installed on a new camshaft. A new camshaft requires the use of new lifters.

I know its pricey, but you need to replace all rockers. They have lots of years, miles, hours of service and if two are failing I bet you can count on others being at end of service life also. Rocker shafts appear excessively wore also.

On Injectors, you are correct they are "57's" and the 118-9030 is an original injector. When I pull the injectors out of motor, after quick visual inspection they go directly into a gallon freezer bag. Visual inspection of yours reveals issues with cylinder head. You have combustion gas past tapered seat. Another rabbit hole, but basically I'd suggest closer inspection of injector and probably injector seats need cut at minimum. Least amount of handling is best on injector, doesn't take much to destroy one. Latest thing cleaning is just to clean the tip only in ultrasonic cleaner, I haven't made a basket to do this yet so can't give you any feedback.

Your engine is a 435 from a Volvo. Is that still the case? What is your plans? Will need iron to make a 550, like cylinder packs, turbo, and others. I have that file at home and can reference for you if needed.

Your cam is the same as a 550HP 5EK/6TS. Injector lift is actually more than the 139-0537 one used in the 6NZ C-15, but not sure on ramp rates, lobe separation angle, etc. Attached chart.

 

Also on injectors, call around. Pretty sure they are on national back order.

 

I’ve built all kinds of engines with offset ground cranks. If you grind for a smaller big end than stock you can get into strength problems, but if the crank is built up and re-ground I’ve never had an issue with engines that live between 7000-9000rpm. It’s like anything else, depends who does the work.