littleredstroker
New member
I've got a 96 motor sitting in the barn. Was wondering if I could just swap rods from it to my SD and just do new bearing or not
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Pmr swap
- Thread starter littleredstroker
- Start date
02POWERSTROKE7.3
New member
Crank will need rebalanced.
littleredstroker
New member
Are they balanced to the crank? Saw another write up where they said to just swap em
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Arisley
Moderator
Why would the crank need rebalanced? Swap them in. If you want to get fancy, you can "balance" all the piston rod assemblys after you put the pistons and rings on. Weigh each assembly, remove enough metal from the rod to make them all weigh the same as the lightest one.
I would also replace rings while I was in there. If everything looks good on the crankshaft, I would leave it alone.
Oh yeah, have the oil cooler jets welded on.
I would also replace rings while I was in there. If everything looks good on the crankshaft, I would leave it alone.
Oh yeah, have the oil cooler jets welded on.
I haven't done it YET, but I have accumulated a ton of parts, and am swapping my PMRs out of my 02 and installing forged that I had cryo treated. I bought new bearings and bushings, I plan to pull the engine, remove the oil pan and heads, pull the rods, bring them to the machine shop and have the new bushings pressed in the forged rods, wrist pins installed, and then I'm just gonna swap them back in.
Doing 910 springs while I'm in there, as well as melling LPOP, WP, GPs, ARP head studs, and a fuel bowl delete/RR. New oil pan should seal the deal, and she'll be ready for some 250/200s!
Doing 910 springs while I'm in there, as well as melling LPOP, WP, GPs, ARP head studs, and a fuel bowl delete/RR. New oil pan should seal the deal, and she'll be ready for some 250/200s!
farm boy
New member
:whs:
Diesel Innovations did a rod swap in my truck. No re-balancing the crank req'd. I trust David's advice on not needing to. He has put a few 7.3's together...
Running strong ever since.
There's enough of a weight difference...that we would nevvvvver swap forged onto a PMR crank...w/o re-balancing.
Machine shops have called us and said...'wtf' when trying to balance a 'pmr' (originally) crank with forged rods...
so the cranks were balanced...errr...should say weighted differently from the factory with the respective rod.
can you do it? have people done it?? sure...
Machine shops have called us and said...'wtf' when trying to balance a 'pmr' (originally) crank with forged rods...
so the cranks were balanced...errr...should say weighted differently from the factory with the respective rod.
can you do it? have people done it?? sure...
I don't think it's going to make ENOUGH of a difference to cause damage. If it does... I'll pay the piper (pissed of hell of course) and build one from scratch. I just don't have the money or time to put it in a machine shop.
Definitely some crossed fingers, tho, lol
Hotrodtractor
Moderator
littleredstroker
New member
So could I swap the 96 crank as well as rods? Just to be safe
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Groomzybanshee
New member
Why not just put the 96 motor in??
littleredstroker
New member
I read on another site that pmrs were good to 500. Now I'm seeing 400 pop up everywhere and am trying to figure out a plan.. I'm guessing I've got more than 400 right now.
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Buffalo444
New member
The source of this alone makes me think you should have the crank balanced.
littleredstroker
New member
Cause its got 250 k on it and burns about a quart of oil a week mines got 165
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fatsix
New member
All of the more reason to use rods with 250k on them... Are you just going to wing the sizing as well?
A good friend of mine who is a competitive engine builder told me, " Rods are like women, they remember everything you do to them".
Buffalo444
New member
Why not get an entire overhaul kit and build the 96 out on a stand?
fatsix
New member
And run the piss out of the PMR engine. Doesn't make sense to spend twice the money... I cannot see any substantial good coming out of this. Yeah it might work, for a while...
Buffalo444
New member
Coming out of what? Swapping the forged rods into the PMR engine?
Groomzybanshee
New member
If you can't afford to do it right . You can't afford to do it twice....
