Aldive on board - question on underdrive pulleys

[EasyRhino]

Howdy, Aldive (Or if anyone else knows the answer).

Have a 2004 Mustang GT with the 4.6L engine, and the 2002 Explorer with the 4.6L engine. Both look like the pulleys may be the same.

Question is: I have a set of underdrive pulleys I got for the Mustang that never got installed, and I am selling the Mustang.

I am wondering if I can use these same underdrive pulleys on my Explorer (looking to gain a few tenths of a mpg).

They are Steeda's and include a large alternator pulley, a larger water pump pulley, and a smaller crankshaft pulley (this is a full replacement, not one of those 'adapter' types).

I cannot seem to find any definitive facts to support this change.

Thanks,

Kevin

 

[aldive]

Sorry Kevin, I have no idea.

 

[EasyRhino]

Okay,

I figured that since you are the mileage man you might know. What underdrive pulleys did you use?

In going where no Explorer has goen before, as far as I know, I will go for it and try to use them during my 100K major maintenance upcoming.

I will let you know how it comes out.

Do you think anyone would be interested in pics of this 100K evolution?

I am doing plugs, PCV, pulleys, idler pulley inspection, fan belt replacement, coolant flushing, MAF cleaning, K&N filter cleaning, oil change, and a few other odds and ends. Already did the vacuum leak checks with propane (can simulate for a demo), stethescope (sp?) checks for timing chains (not sure of the efficacy of this test) and for fuel injectors.

I'm no aldive, but I try.

 

[Blacksheep Josh]

With the huge maintenance party you'll be doing. I'd add a fuel pressure test, new fuel filter, AC recharge (if needed), and also a compression test.

Good luck with it

 

[EasyRhino]

With the huge maintenance party you'll be doing. I'd add a fuel pressure test, new fuel filter, AC recharge (if needed), and also a compression test.

Good luck with it

I'll see you a fuel pressure test, AC pressure check, and a full round of compression tests, and raise you a vacuum test.

I had replaced the fuel filter not too long ago (what a PITA!) using pictures that one of the guys here had posted, so I'm not going there right now.

I had added one can of refrigerant about 6 months ago, the first time that any had been added in over 6 years and 95K miles of ownership, but I do need to do a recheck - good idea and good catch.

Any more ideas?

Yesterday, in preparation for this evolution, I did a pre-inspection. Funny, but I have spent less time under the hood of the Explorer than any car I have ever owned, and have put more miles on this car than any I have ever owned. I have literally only been under there for inspections and fluids checks and changes.

This from a guy who likes to wrench on cars. Significantly, I pulled the engine cover for the first time ever yesterday (looks just like my Mustang 4.6L under there) and did the gunk engine cleaner routine for the first time ever on this vehicle. That is exceptionally weird for me.

I have spent far more time under the wheel wells than under the hood.

The one idea I am toying with, but not entirely enthusiastic about is pulling the passenger side valve cover to take a look at what I can see of the timing chain and hopefully glancing down into the timing chain cover to see how the follower looks. My looks seem to indicate that timing chain problems are more frequent/evident on the passenger side. I have no indications of a problem, but this is a problem that I find worrisome, hence the rationale for the stethoscope checks done yesterday.

Kevin

 

[Donner]

More information, please...

Howdy, Aldive (Or if anyone else knows the answer).

Have a 2004 Mustang GT with the 4.6L engine, and the 2002 Explorer with the 4.6L engine. Both look like the pulleys may be the same.

Question is: I have a set of underdrive pulleys I got for the Mustang that never got installed, and I am selling the Mustang.

I am wondering if I can use these same underdrive pulleys on my Explorer (looking to gain a few tenths of a mpg).

They are Steeda's and include a large alternator pulley, a larger water pump pulley, and a smaller crankshaft pulley (this is a full replacement, not one of those 'adapter' types).

I cannot seem to find any definitive facts to support this change.

Thanks,

Kevin

If you have part numbers for those pulleys, please list them (or maker/model names). If you're selling the Stang, sell the pulleys with it... Find pulleys made specifically for what you are trying to accomplish... Failure of these parts would be horrendous. You don't think so?

 

[Mr. Logger]

They should fit. I had to buy a replacement engine for my '02 Mustang GT and ended up buying one out of an Explorer. Swapped the pulleys from my old engine to the new one. Though my alternator was swapped from the old engine to the new one. Everything fit fine though.

 

[aldive]

Okay,

I figured that since you are the mileage man you might know. What underdrive pulleys did you use?

I use a 4.0 SOHC motor and the UDP I use is from ASP.

Do you think anyone would be interested in pics of this 100K evolution?

Yes, by all means post them.

I'm no aldive, but I try.

And that my friend is all that counts.

 

[EasyRhino]

[QUOTE And that my friend is all that counts.[/QUOTE]

 

[EasyRhino]

If you have part numbers for those pulleys, please list them (or maker/model names). If you're selling the Stang, sell the pulleys with it... Find pulleys made specifically for what you are trying to accomplish... Failure of these parts would be horrendous. You don't think so?

Yup, failure of the pulleys would be major suckage, no doubt. You can be certain that they will be determined the right fit before I go final with them!

FWIW, these engines are so similar that I only stock one set of parts numbers for both of them (I do all my own wrenching). With the Explorer engine cover off, they are identical, except for the air filter (same MAF and TB). The serpentine belt arrangement is identical, the pulleys have the same number of grooves and alignment, and the same rough O.D. measurements. The stock number for the alternator is the same, therefore the same pulley originally comes with both. Additionally, both of these engines were built at the same factory.

To that end, I will be measuring, by micrometer, the new Mustang pulleys and the currently installed Explorer and Mustang pulleys before going any further.

In other words, your concern is well appreciated by myself.

The point of my post was to query whether anyone knew parts interchangeability off of the top of their head. I am also pursuing other avenues to determine these parts interchangeabilities.

BTW, didn't you have a big party I have heard about? j/k.

 

[Mr. Logger]

Like I said. I know they will fit. The only difference between the two I believe is the Explorer has an aluminum block, and the Mustang has an iron one.

 

[Donner]

I was the only one there

 

[EasyRhino]

I was the only one there

Dayum, you made me spew all over the desk!

The only one there or the only survivor?

http://en.wikipedia.org/wiki/Donner_Party

Actually, when putting my name in for a restaurant table, I usually use either 'Hoffa" or "Donner". You get weird looks when they announce "Donner party, a table for the Donner party".

 

[Donner]

Nah, Donner Summit and Donner Lake Nicest places to be in the Sierra during Winter...

 

[shadowless127]

i want me some UDPs....Hope this works out

 

[EasyRhino]

I will keep all posted.

Unfortunately, if they do fit, I will provide the change in gas mileage, but will not be able to separate any delta/improvement out from the other maintenance items I am programming to accomplish at the same time (e.g plug replacement).

But I do keep detailed gas logs of every fill up, and running average of the last 12 months and the overall cumulative average mpg, so my existing data base is robust.

I would be extremely happy to improve my Ex's mileage by as little as 1-1.5 mpg. Keep in mind that I do not achieve highway mileage numbers here. All my returns are city mileage.