F 450 Super Duty gasser

[JJZ 109]

So far the words seem encouraging for the motor. Nice to hear as it's got 153k on the clock. But as stated it won't have tons of miles put on it anymore for my seasonal use.

 

[puckgrinder85]

The only thing I've really done to them are the occasional coils and the exhaust studs snapping off, but that might be a regional thing due to rust as we get a lot of fords with the same issues. I think they made the studs larger on the later years if I recall.

 

[JJZ 109]

The only thing I've really done to them are the occasional coils and the exhaust studs snapping off, but that might be a regional thing due to rust as we get a lot of fords with the same issues. I think they made the studs larger on the later years if I recall.

Funny you should mention that. While taking me on a tour of the facilities and showing me the truck, they did point out that they'd put new exhaust studs and manifold gaskets on it. A peek under the hood showed this to indeed be the case.

 

[tcartwri]

Just keep in mind that an hour of Inverter use will require hour(s) of driving time to recharge the batteries. Our service truck has gone thorough three sets of batteries because the operators forget this little factoid, and park it with completely flat batteries.

 

[puckgrinder85]

Funny you should mention that. While taking me on a tour of the facilities and showing me the truck, they did point out that they'd put new exhaust studs and manifold gaskets on it. A peek under the hood showed this to indeed be the case.

Well that's a plus. Its a well paying job for us techs if they know the secrets to removing them, not so good for customers. Its a pricey job if a lot are broken off. Some you can even tell they are broken, the stud/ nuts breaks off but they also rust themselves to and into the manifold, only till you put a rachet on one you know. Bad feeling when you keep counting.

 

[breadtrk]

Blown out plugs? What are the cylinders suddenly developing 5000 psi per cyl? There was a rash of bad castings around the plug holes to relieve the much greater pressures the valves see?

I can't believe some of the crap I see posted here.

 

[Soundguy]

The V-10 was one of Ford's best kept secrets. Think about it, they seldom come up for sale. My dad has a 1999 with a 7.3L. It is no speed demon but it has good torque. I think the V-10 would be cheaper to run.

i agree, my 350 and 450 7.3's ( both 99's ) won't win any speed contests.. but they will show up at the end of the race pulling quite a load.

 

[Soundguy]

. Even so, there isnt much else to go wrong, unlike the diesel.

and what problems did the 7.3's exhibit.. other than a 25$ CPS?

 

[JJZ 109]

Just keep in mind that an hour of Inverter use will require hour(s) of driving time to recharge the batteries. Our service truck has gone thorough three sets of batteries because the operators forget this little factoid, and park it with completely flat batteries.

Again, thanks for the tip, as I have zero inverter experience. But I foresee it only as a backup if the generator in my biz trailer gives up on me in the middle of a job.
With this truck's setup, I don't know if it works off of the engine's battery or the big battery that runs the bucket hydraulics. My current truck uses 2 normal sized deep cycles independent of the engine batteries to operate the hydraulic pump. The new truck has one huge battery for that. Lots of studying up to do after I get it home.

 

[puckgrinder85]

Blown out plugs? What are the cylinders suddenly developing 5000 psi per cyl? There was a rash of bad castings around the plug holes to relieve the much greater pressures the valves see?

I can't believe some of the crap I see posted here.

Yes, blown out plugs. The threads get ripped from the head. You need to insert a timesert or something similar to repair. From I've seen there isn't enough threads engaged in the alumn. head to hold the plug, either it loosens up and then beats the threads up enough to fail or some other means of failure, either way the end result is usually the plug flying out and normally busting the coil off its mounting.

Here you go:

Ford Triton Spark Plug Blew Out - Cylinder Head Repair Orlando



This is an entirely different issue than the later 3 valve 5.4 with the plugs seizing into the head and breaking in two.


We've repaired about 75 plug holes to date, again mostly the 2 valve 5.4, very few in the V10 and none in the 4.6. This "crap" has been going on for many years.