5.0 Explorer swap help!

[D.R.C.]

Working on a 75 Bronco. We're trying to find out if the Explorer belt swap would be an option to gain clearance for a larger radiator and electric fan. The radiator and fan assembly thickness is approx 6.75".

Question 1:
Does anyone have a measurement from the FACE of the engine block to the end of the WATER PUMP w/pulley, minus the mechanical fan?

Question 2a:
We want to be able to take advantage of the added A/C compressor. However the truck has Wild Horses' Extreme Duty Power steering system with the hi volume Saginaw pump and remote reservoir. Has anyone been able to mount the Saginaw pump AND the A/C compressor with the Explorer drive system?

Question 2b: Has anyone been able to run the Explorer P/S pump with the W.H. Extreme Duty Steering system? The engine is a 331 stroker that idles at approx 1,000RPM.

 

[sanndmann3]

I think I can help with Q1...
from the face of the head on drivers side, it looks like its 8 inches to the end of the waterpump threads. could gain a 1/4 or so if you cut the threads off. I wanted to take a pic but didn't have a 3rd hand...

Slowly, over the winter i'm adding electric fan to my 75 wagon (351W & serp drive). I flipped the brackets to move the radiator forward 3/4" or so. working on making a shroud and going to offset the Volvo fan up and to the drivers side to avoid the waterpump.

hope that helps...

 

[D.R.C.]

Sanndmann3
That is a tremendous help, thank you! I think I've seen the entire internet and could not find that dimension. As well as some companies that offer serpentine retrofits only giving a measurement distance from the radiator and water pump. Which I feel is a completely relative dimension anyway.

This truck is getting a Ron Davis radiator for sure and I'm working really hard to find a way to fit a 3,000cfm Spal fan too. Due to the Saginaw pump installed the dreams of a serpentine system are dimming. But the plan to add A/C is still very much alive.

 

[sanndmann3]

I thought WH made a serp bracket for the Sag pump that aligns with the Explorer offset... I've had a customer or 2 saying they were going that route... How thick is the Spal? there is a way, just how much trouble you have to go thru is the question...

 

[garberz]

I thought WH made a serp bracket for the Sag pump that aligns with the Explorer offset... I've had a customer or 2 saying they were going that route... How thick is the Spal? there is a way, just how much trouble you have to go thru is the question...

The WH Saginaw bracket replaces the PS and AC combo bracket and mounts the PS pump a bit lower. If you want a Saginaw pump with A/C, that's something you'll have to fab yourself. A couple guys on here have done that, maybe they'll chime in.
If A/C is a priority, I'd run the stock Explorer fan and clutch along with the stock Explorer PS pump, then you can use the Explorer AC compressor. The Explorer PS pump works very well, even with hydroboost. I'll agree it will never be as good as the Saginaw pump. The stock fan and clutch move a lot of air. I don't see how an electric fan will improve the cooling over the stock Explorer stuff. This gives you the benefit of a serp system with AC.

Mark

 

[D.R.C.]

The WH Saginaw bracket replaces the PS and AC combo bracket and mounts the PS pump a bit lower. If you want a Saginaw pump with A/C, that's something you'll have to fab yourself. A couple guys on here have done that, maybe they'll chime in.
If A/C is a priority, I'd run the stock Explorer fan and clutch along with the stock Explorer PS pump, then you can use the Explorer AC compressor. The Explorer PS pump works very well, even with hydroboost. I'll agree it will never be as good as the Saginaw pump. The stock fan and clutch move a lot of air. I don't see how an electric fan will improve the cooling over the stock Explorer stuff. This gives you the benefit of a serp system with AC.

Mark

I thought WH made a serp bracket for the Sag pump that aligns with the Explorer offset... I've had a customer or 2 saying they were going that route... How thick is the Spal? there is a way, just how much trouble you have to go thru is the question...

sanndmann3

garberz is correct the W.H. brackets do not allow for an A/C compressor unfortunately. I spoke with W.H. yesterday and they actually do very little with A/C and their parts offered. The Spal fan is 3.74" and the radiator is 3.00"

garberz the HI volume W.H. saginaw pump is rated at 4.5-5.0 gallons/minute and 1600 PSI and right now the truck steers like a Cadillac with 35s in a parking lot. A problem with using most modern P/S pumps is that to get the flow rate comparable to even a stock Saginaw pump the modern pump has to spin at a much faster rate, which would likely require a custom pulley or keeping the engine RPM in a "sweet spot" while rock crawling or on the trail.

 

[toddz69]

sanndmann3

garberz is correct the W.H. brackets do not allow for an A/C compressor unfortunately. I spoke with W.H. yesterday and they actually do very little with A/C and their parts offered. The Spal fan is 3.74" and the radiator is 3.00"

garberz the HI volume W.H. saginaw pump is rated at 4.5-5.0 gallons/minute and 1600 PSI and right now the truck steers like a Cadillac with 35s in a parking lot. A problem with using most modern P/S pumps is that to get the flow rate comparable to even a stock Saginaw pump the modern pump has to spin at a much faster rate, which would likely require a custom pulley or keeping the engine RPM in a "sweet spot" while rock crawling or on the trail.

Another option ($) is this option from Steerco/AGR - now owned by an EB owner/enthusiast is the replacement that bolts into the Explorer bracket and would allow you to keep your AC compressor. Looks like it uses a custom pulley to help it out.

http://www.steerco.com/product-p/840256p.htm

Todd Z.

 

[D.R.C.]

Another option ($) is this option from Steerco/AGR - now owned by an EB owner/enthusiast is the replacement that bolts into the Explorer bracket and would allow you to keep your AC compressor. Looks like it uses a custom pulley to help it out.

http://www.steerco.com/product-p/840256p.htm

Todd Z.

I did find this later in the day yesterday. I called the tech line to find out specs on the pump but no one answered. To be honest I am a bit weary on this since the company has been bought out. With my experience of dealing with companies that get bought out typically quality in some form suffers. I'm still planning to try the tech line again today. However the pressure rating listed on the web page is already below the current system.

I did speak with Jeff at Turn One Steering. I was curious of options using a GM type II pump as the aftermarket world is very welcoming to these pumps. He said the type II pump is capable of 15 gallons/minute! its just a matter of valving the pump for the correct pressure and having a pulley custom made to reach the target flow and pressure. Turn One specializes more in cirlce track high rpm racing but he has a very good understanding of basic power steering system needs and is very helpful to speak with.

 

[sanndmann3]

Every time i'm junkin' i'm looking for a 03/05 super duty to try out the pump mod detailed below. don't know if this is any different that what you have found but thought I'd throw it out there...
http://classicbroncos.com/forums/showthread.php?t=237617

 

[bronconut73]

All very interesting.
I can't resist that Steerco upgraded pump....
I can feel my wallet getting lighter, lol...