Gas vs PSD
Cargo Master
Joined: Jan 2005
Posts: 2,413
Likes: 11
If the topic is v10 vs psd. The gassers express some supremace in that they have higher HP at a higher rpm. To me this doesn't make sense and I'm trying to learn what the benifit of such a high rpm for peak power in a towing vehicle. The thread actually covers a lot of engines in that psd is covered. Before 03 psds had lower rpms. It appears where getting the range out of the way so everybody is on the same page so we have a better under standing of the point being made.
Cargo Master
Joined: Jan 2005
Posts: 2,413
Likes: 11
Nope, I don't know jack and I certainly have not learned anything from you... But I have hope for the future.
Apparently you are confused because you may be under the impression that my previous statement compares the 7.3 and 6.0 to the 6.4 and 6.7... That was not my intention. I think the 6.7 is better than the 6.4, the 6.4 is better than the 6.0 or 7.3 and the 6.0 and 7.3 are a toss up. Edge, if any, to the 7.3 …for fewer emissions crap. Now, I have only owned a 6.4 and have driven the 6.7, so my opinion is just that, an opinion... Important to me, not important to you, just like everyone else.
Thanks for playing now what's your name again?
Apparently you are confused because you may be under the impression that my previous statement compares the 7.3 and 6.0 to the 6.4 and 6.7... That was not my intention. I think the 6.7 is better than the 6.4, the 6.4 is better than the 6.0 or 7.3 and the 6.0 and 7.3 are a toss up. Edge, if any, to the 7.3 …for fewer emissions crap. Now, I have only owned a 6.4 and have driven the 6.7, so my opinion is just that, an opinion... Important to me, not important to you, just like everyone else.
Thanks for playing now what's your name again?
No brother you are confused. You excluded the 7.3 and 6.0 from a positive statement. Its clear to me you don't know. The 7.3 prolly has more miles logged than anything else. The 6.0 opened up the door for high powered diesels. Its their platform that took over. If the engine could meet emissions then by 08 there very well been a turn around with the 6.0. Emissions killed the 6.0 not its rep. There's vehicles that got the 6.0 until 2010. I bet those engines get as close to 0 as possible without any issues.
My name? It doesn't matter. Might not remember me but you will remember this forum.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
The 6.4L is VERY similar to the 6.0L. I think the cam, crank, and even the block are all the same as the 6.0L. Fuel system is different, so is the turbo system. Only major design difference is a bigger bore.
Thus, the 6.0L lived on in Super Duty trucks until the 2010 MY. In fact it still lives on as the International MaxxForce7 engine used in their medium duty trucks.
Elder User
Joined: Jan 2010
Posts: 590
Likes: 0
If the topic is v10 vs psd. The gassers express some supremace in that they have higher HP at a higher rpm. To me this doesn't make sense and I'm trying to learn what the benifit of such a high rpm for peak power in a towing vehicle. The thread actually covers a lot of engines in that psd is covered. Before 03 psds had lower rpms. It appears where getting the range out of the way so everybody is on the same page so we have a better under standing of the point being made.
You can bring your 6.8 to 5+K all day long, that isn't going to aid you in a towing situation. All you are showing is that you are so commited to your cause that you are willing to Ruin a pefectly good engine just to proove a point.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Have you ever seen someone do it without exceeding redline?
I did a similar thing to my 2000 Contour while diagnosing an alternator problem at high RPMs. I held 7,000 RPMs for almost a minute straight, and it never broke!
Senior User
Joined: Feb 2006
Posts: 257
Likes: 0
From: Kingsland, GA
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Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Have you ever ruined an engine by running it at or below it's maximum speed?
Have you ever seen someone do it without exceeding redline?
I did a similar thing to my 2000 Contour while diagnosing an alternator problem at high RPMs. I held 7,000 RPMs for almost a minute straight, and it never broke!
Have you ever seen someone do it without exceeding redline?
I did a similar thing to my 2000 Contour while diagnosing an alternator problem at high RPMs. I held 7,000 RPMs for almost a minute straight, and it never broke!
I have been towing with my 7.3 PSD on very long grades in CA and NV and even holding the gas pedal on the floor for 15-20 minutes with 90F outside I didn't turn the AC off and my temperature gauge didn't move from the center position.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
Ruining is one thing, but from driving gasoline engine in the past and from other replies I know that most gasoline engine when floored on grade will overheat and force you to slow down or pull over and stop.
I have been towing with my 7.3 PSD on very long grades in CA and NV and even holding the gas pedal on the floor for 15-20 minutes with 90F outside I didn't turn the AC off and my temperature gauge didn't move from the center position.
I have been towing with my 7.3 PSD on very long grades in CA and NV and even holding the gas pedal on the floor for 15-20 minutes with 90F outside I didn't turn the AC off and my temperature gauge didn't move from the center position.
Dodge, Chevy, and Toyota all put tiny radiators in their trucks compared with an F150, let alone a Super Duty. Compare the cooling packages.
In our test in Millersburg, the only trucks who's cooling fan had to engage were my 6.4L truck and Matt's 6.0L truck. Mike's V10 didn't even break a sweat!
Elder User
Joined: Jan 2010
Posts: 590
Likes: 0
Lock a engine, yes. Throw a rod, no.
On top of that, The statement I was trying to make is that a 5K+ RPM, the bigger Gas engines will be pumping oil faster than it returns, thus starving for oil. Run it long enough and it will lock it up.
Also... You still haven't pointed out how this helps the towing situation.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
I've never ruined an engine at speed. They have died out when stoped at the light though.
Lock a engine, yes. Throw a rod, no.
is that below redline?? A speed regularly held??
On top of that, The statement I was trying to make is that a 5K+ RPM, the bigger Gas engines will be pumping oil faster than it returns, thus starving for oil. Run it long enough and it will lock it up.
Also... You still haven't pointed out how this helps the towing situation.
Lock a engine, yes. Throw a rod, no.
is that below redline?? A speed regularly held??
On top of that, The statement I was trying to make is that a 5K+ RPM, the bigger Gas engines will be pumping oil faster than it returns, thus starving for oil. Run it long enough and it will lock it up.
Also... You still haven't pointed out how this helps the towing situation.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
--
My machinist used to rev engines to the redline when testing them, or listening for issues. Especially in break-in.
His point in doing this was that if there's something wrong with it, it'll break and then he can fix the issue. Furthermore, he said that if it broke at redline in 10 or 20 minutes, it wasn't going to last another year running at normal revs, so it was better to test it and be sure.
--
For anyone who still thinks Bill's V10 test was ruining a "perfectly good engine", read the following thread, and make sure you check out the pics (kinda small) in post # 9.
Mr-Pipeline pulled that engine from his truck, and gave it to Bill who installed it a truck Bill picked up that had other issues with the engine.
It was not "perfectly good" from the get-go.
https://www.ford-trucks.com/forums/9...-behavior.html
