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new 7.3 gas ford

Yeah; who mentioned a diesel motor first.......?🤔:flipoff2:
:bawling:
How about the get your fucking ass to work, don't live in a shit hole emoji? :crybaby2:

isee****y.jpg
 
wonder how much corellation between oil there is... ten thousand mile drain intervals and a near total lack of metallic additives to begin with makes for an easy finger to point

shitty oil makes flat cams, always has, doesn't break valve springs though
I’m curious about that also. Chevy has the same lifter issues with the current Gen 5.3 and 6.2s. Not sure about the 6.6, though. Oil change interval is 7500-10K when using synthetic oil. My 5.3 likes to burn oil around 5K. If you aren’t watching it, it’s easy to let them get low.
 
IDK how the fuck modern vehicles keep having lifter problems now that everything is roller lifters. If they can make a semi float axle shaft that can survive with roller bearings riding on it why can't they make a cam that can survive a fraction of the same loading?

Like how much would it really add to the BOM to use fancier stock for the cam? $30? $50? $100?
 
IDK how the fuck modern vehicles keep having lifter problems now that everything is roller lifters. If they can make a semi float axle shaft that can survive with roller bearings riding on it why can't they make a cam that can survive a fraction of the same loading?

Like how much would it really add to the BOM to use fancier stock for the cam? $30? $50? $100?
Imagine the size difference from axle shaft bearing to roller lifter with a bore that the entire lifter has to pass through less than 7/8".
 
IDK how the fuck modern vehicles keep having lifter problems now that everything is roller lifters. If they can make a semi float axle shaft that can survive with roller bearings riding on it why can't they make a cam that can survive a fraction of the same loading?

Like how much would it really add to the BOM to use fancier stock for the cam? $30? $50? $100?
better EP oil in rear diff than in engine
 
Imagine the size difference from axle shaft bearing to roller lifter with a bore that the entire lifter has to pass through less than 7/8".
The rolling elements in a semi-float bearing are way smaller and consequently are turning way faster, granted there's more of them.

Still, the 1st generation of OEM roller lifter stuff from the 90s didn't have these problems.
 
I recall reading about the 7.3 that ford was intending for it to go to 300k miles. Seems like it could too without this issue.

If the issue is getting to br major, will a recall be on the way like with the bosch cp4?
 
Cleetus learned me that Ford 7.3 lifters are identical to LS lifters in every way. You can pull a Ford lifter and drop an LS one right in.

Coincidence they both have lifter problems?
Interesting. Are they a codeveloped product like the 10 speed transmission?
 
The rolling elements in a semi-float bearing are way smaller and consequently are turning way faster, granted there's more of them.

Still, the 1st generation of OEM roller lifter stuff from the 90s didn't have these problems.

they also didn't have crazy cams with variable cam timing and the like either.
I wonder if you can run a much more aggressive profile since you can control cam timing and that's why we have lifter problems now?
Cause it's not just ford and chevy.
 
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IDK how the fuck modern vehicles keep having lifter problems now that everything is roller lifters. If they can make a semi float axle shaft that can survive with roller bearings riding on it why can't they make a cam that can survive a fraction of the same loading?

Like how much would it really add to the BOM to use fancier stock for the cam? $30? $50? $100?
How much of it is due to (or exaggerated by) today's crazy long oil change intervals?

Are the 4-5k mile religious oil change guys having the same numbers of failures as the 10k or whenever the light goes off oil change guys?

Unanswerable question, but I think I'm on to something.

:confused:
 
How much of it is due to (or exaggerated by) today's crazy long oil change intervals?

Are the 4-5k mile religious oil change guys having the same numbers of failures as the 10k or whenever the light goes off oil change guys?

Unanswerable question, but I think I'm on to something.

:confused:
If that was the case you would think Ford would change intervals. Right now they are paying for engine change outs.
 
Still, the 1st generation of OEM roller lifter stuff from the 90s didn't have these problems.
Interesting

I don't recall hearing about lifter issues on Vortec Small block Chevys and later '90s small block Fords. Wonder if it is a function of more aggressive cam profiles and the fact that the LS and other modern engines are more high strung and spend more of there life north of 3000 rpm. Maybe higher spring pressures as well to combat more aggressive ramps and higher rpm's.
 
If that was the case you would think Ford would change intervals. Right now they are paying for engine change outs.
Well, 1- I think it's a question that can't be legitimately answered, and 2- you're expecting to much from a company that hasn't even made a reliable diesel in 20 years :laughing:
 
Well, 1- I think it's a question that can't be legitimately answered, and 2- you're expecting to much from a company that hasn't even made a reliable diesel in 20 years :laughing:
3- is it somehow influenced by federal emissions laws?
 
3- is it somehow influenced by federal emissions laws?

There is some speculation that in an effort to reduce windage (increase efficiency) that there is less oil making it to the cam and lifters to begin with.

I've wondered if we shouldn't retrofit cam squirters instead of piston squirters
 
Very well could be. The .gov ruined diesels, who's to say they're not going to ruin gassers as well.
well we know that you can't have the fun metals in your oil anymore.
I'm sure there's some kind of crazy law about how much oil your shit is supposed to use over it's lifetime or something.
 
There is some speculation that in an effort to reduce windage (increase efficiency) that there is less oil making it to the cam and lifters to begin with.
well my kraut shit pile has a variable volume oil pump for efficiencies.

and when the lifters tick when you haven't driven it for 5 days the BMW recommendation is to run the piss out of it for 5 minutes at high RPM to pump the lifter back up.
it's either that or replace the head and lifters, so I just run it above 3 grand for 5 minutes.
 
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