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Originally posted by fastcougar:
How many miles TOTAL on the engine? I tend to subscribe to Terry's theory on PM Rod stretch.
06 GMC Sierra 2500HD Dmax/ally
06 Pontiac G6 GT
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ill take pics when i begin the teardown. i gotta finish my bronco 2 (needs driveshafts) cause i swapped that to a mtx cause the atx blew up. i need a set of wheels  then ill probably build the new motor before i even tear apart my car. then i gotta start research on turbocharging before i can proceed to that step 
Russell
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Originally posted by Thinkmoto:
Originally posted by fastcougar:
How many miles TOTAL on the engine? I tend to subscribe to Terry's theory on PM Rod stretch.
On the early 2.5L engines. Maybe.
With how far the technology has come, not a chance. Period!
The same PM style rods support 600-700 wheel TQ in the new Ford diesels.
People indiscriminately claiming PM rods are weak just don't understand the technology and metallurgy behind them. In most regards they are superior to a standard casting of the same design. That's a fact of physics and not an opinion.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Originally posted by fastcougar:
... I'd bet $100 that the journal opening is oval (out-of-round).
concidering that he drove the car with the rod knocking, you can be almost guaranteed to find that the opening is out-of-round, hell I'd almost bet that the rod journal has the piss beaten out of it too. 
87 Mustang GT 5.0L TURBO
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Originally posted by DemonSVT:
Originally posted by Thinkmoto:
Originally posted by fastcougar:
How many miles TOTAL on the engine? I tend to subscribe to Terry's theory on PM Rod stretch.
On the early 2.5L engines. Maybe.
With how far the technology has come, not a chance. Period!
The same PM style rods support 600-700 wheel TQ in the new Ford diesels.
People indiscriminately claiming PM rods are weak just don't understand the technology and metallurgy behind them. In most regards they are superior to a standard casting of the same design. That's a fact of physics and not an opinion.
Yeah, I'm sure that the rods DESIGNED and SPEC'D for 700 ft/lbs are indeed MUCH Stronger. If you believe that 2.5L and 3.0L gasoline engine rods are made to same specs as 7.0L diesel engine rods are the same, you need to go see a shrink 
So, why does the bearing spin? Let's analyse this for a minute if you will. Rod bearings in ALL engines spin for one simple reason ... the forces acting on them overcome the "nip", or bite that they have in the rod journals. Once the bearing has no "seating", it's free to rotate. Now, what causes this to happen is the question.
If you want to believe it's an oiling issue, so be it. I choose not to. Let's just leave it at that and agree to disagree. I'm sure that you will never believe that the PM rod is to blame and I know that I will never be 100% convinced that lack of oil is the issue. So, why beat our heads against a wall?
Just to clarify my use of the term "rod stretch" ... I'm not insiuating that the rods themselves actually strech to any measureable degree. It's more a matter of the notch where the bearing slots into the journal weakens over time and eventually gives way and whalla ... the bearing picks up and spins within the journal. That in turn causes all kinds of nasty things to happen. I for one don't have to worry about this in my rebuild because I taken the necessary precautions (ordered Pauter rods).
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Originally posted by fastcougar:
Originally posted by DemonSVT:
Originally posted by Thinkmoto:
Originally posted by fastcougar:
How many miles TOTAL on the engine? I tend to subscribe to Terry's theory on PM Rod stretch.
On the early 2.5L engines. Maybe.
With how far the technology has come, not a chance. Period!
The same PM style rods support 600-700 wheel TQ in the new Ford diesels.
People indiscriminately claiming PM rods are weak just don't understand the technology and metallurgy behind them. In most regards they are superior to a standard casting of the same design. That's a fact of physics and not an opinion.
Yeah, I'm sure that the rods DESIGNED and SPEC'D for 700 ft/lbs are indeed MUCH Stronger. If you believe that 2.5L and 3.0L gasoline engine rods are made to same specs as 7.0L diesel engine rods are the same, you need to go see a shrink
So, why does the bearing spin? Let's analyse this for a minute if you will. Rod bearings in ALL engines spin for one simple reason ... the forces acting on them overcome the "nip", or bite that they have in the rod journals. Once the bearing has no "seating", it's free to rotate. Now, what causes this to happen is the question.
If you want to believe it's an oiling issue, so be it. I choose not to. Let's just leave it at that and agree to disagree. I'm sure that you will never believe that the PM rod is to blame and I know that I will never be 100% convinced that lack of oil is the issue. So, why beat our heads against a wall?
Just to clarify my use of the term "rod stretch" ... I'm not insiuating that the rods themselves actually strech to any measureable degree. It's more a matter of the notch where the bearing slots into the journal weakens over time and eventually gives way and whalla ... the bearing picks up and spins within the journal. That in turn causes all kinds of nasty things to happen. I for one don't have to worry about this in my rebuild because I taken the necessary precautions (ordered Pauter rods).
He was not saying that they are made to the same spec. Correct me if i am wrong but he was telling you that no one really understands how strong the process and the strength of these rods are. He was merely making an example of how strong another ford rod was with different specs but same "process".
PLEASE HELP ME GET MY CAR TOGETHER! ITS IN DAYTON OHIO! I need the motor together and in the car so i can DRIVE it! Pleeeeeese!
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plus a bearing WILL spin with oil starvation. Try it and see.
98 E0 SVT with some stuff
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His point was that the same casting technology is used for those types of rods. Not that the are designed to handle the same amount of hp.... Originally posted by fastcougar:
Yeah, I'm sure that the rods DESIGNED and SPEC'D for 700 ft/lbs are indeed MUCH Stronger. If you believe that 2.5L and 3.0L gasoline engine rods are made to same specs as 7.0L diesel engine rods are the same, you need to go see a shrink
Ryan
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Originally posted by todB-A-N-A-N-A-Sras:
Originally posted by rkneeshaw3.0:
3L pan,
No you don't!
I better, I paid $90 from Bill J for it.
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I have no life
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Originally posted by rkneeshaw3.0:
Originally posted by todB-A-N-A-N-A-Sras:
Originally posted by rkneeshaw3.0:
3L pan,
No you don't!
I better, I paid $90 from Bill J for it.
You have a 2.5 pan that fits the 3L. I missed where we modified a 3L Taurus pan in order for the tranny to bolt up. You have one simlar to the one on the right if not the same one.
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