3306 973 engine options

Thanks and yes that was a typo it’s 64z06618

A 64Z should be a 3306B industrial motor, on the other hand a 63Z is a 3306B truck motor.
Bare in mind the serial number is on the block so by now who knows what these 40 ish year old motors really are.
Good luck
Bob

Bob's absolutely right. What's in either of those engines could be very different from what the book says it should be, especially the proposed donor engine that was built 30 years ago.
FWIW, here's what the book says.......
S/N 13Z3937. Arrangement #118-6892. Built 15/APR/1997. Specs 230 BHP @ 2200 RPM, 735 ft.lb. @ 1400 RPM.
S/N 64Z06618. Arrangement #9Z-5709. Built 29/MAR/1988. Specs 300 BHP @ 2100 RPM, 805 ft.lb. @ 1400 RPM.

Here's the problem. 9Z-5709 is a Custom Shop Arrangement and I can't find too much in the way of detailed information on it anywhere in the electronic system that would enable me to make a straight comparison between the two engines. The info probably exists, but it will be on paper or on a microfiche somewhere. The only thing I came up with is that it is an C-Rated (Intermittent Duty) Industrial Engine.

Major components of the two engines, as built. All bets are off as to what they have today. Note a couple of of caveats in italics because the information is not clear.
Cylinder Block Gp - 7N-6550 - same.
Cylinder Head Gp - 8N-0246 - same.
Crankshaft Gp. 13Z engine has 4P-9856, 64Z engine has 6N-8079. The crankshaft bearings are the same. 6N-8079 appears to be an earlier version of 4P-9856 because it's listed as fitting engines in the S/N range 13Z32120-35960 for the 973 Loader. On that basis the crank from the donor engine ought to work.
Piston & Rod Gp. 13Z has 9Y-8219 (16:1). 64Z engine appears to have 2W-1177 (16:1). This difference between the two arrangements is the piston body - 165-4262 vs 168-4531.

Caterpillar's meticulous documentation of pretty much everything that ever left the factory over the past 70 odd years is truly a joy and a blessing for those in need, but sometimes I wonder if it would be easier to be in a Cummins dominated world where we might just throw in any old truck engine of the same model and hope and pray for the best....

(But I don't wonder it for long)

I must admit my heart sank as soon as I saw that 9Z-5709 Arrangement Number on the proposed donor engine.

I didn't go as far as checking but I assumed that the Fuel injection Pump, injectors, and turbo would be different, simply based on the 70 BHP power difference between the two engines.

Deleted wrong info!

Ken, the 64Z-prefix was a TIER I retrofit to various models of articulated truck (the old DJB products before Cat bought them out), but one option comes up as an industrial engine. I suspect it's that one. I could've sworn that the OP said somewhere that it was a takeout from a piece of farm machinery. See post #14 on page 1.

Thank you for all the information it sounds like I could strip it down to a long block and put all my parts back on it. It is out of one of those big tired fertizler trucks used on farms.

Cmark said:

Caterpillar's meticulous documentation of pretty much everything that ever left the factory over the past 70 odd years is truly a joy and a blessing for those in need, but sometimes I wonder if it would be easier to be in a Cummins dominated world where we might just throw in any old truck engine of the same model and hope and pray for the best....

(But I don't wonder it for long)

Click to expand...

Cummins parts system is as good or better than Cat .Serial number and CPL gets you a list of every part in that motor plus which parts are machine or truck parts. So if you want to build a motor you get the CPL and get after it.
Bob

Junk runner said:

Thank you for all the information it sounds like I could strip it down to a long block and put all my parts back on it. It is out of one of those big tired fertizler trucks used on farms.

Click to expand...

You may be in luck that serial number should be a 3306.vehicle motor
Bob