Inside a motorcraft A/C Pump......interesting - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > General Tech > General 4x4 Discussion
Notices

Reply
 
Share LinkBack Thread Tools Display Modes
Old 11-30-2001, 11:34 PM   #1 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
Arrow Inside a motorcraft A/C Pump......interesting

Since I'm upgrading to a york, I decided to disect my old A/C pump to see how it worked, and to see how much wear it had.

I've used this pump for onboard air for a good 8 years. After the first couple of years, I pretty much gave up oiling it. It maybe saw 1 or 2 caps of oil a year.

I was amazed to find 3 cylinders. Then I pulled the back cover and found 3 more 6 total! Everything was very well lubed, yet virtually no oil came out the air hose. All the cylinders still had hone marks.

The cylinder bores measure 1 3/8, and the stroke is 1 1/8. I'm not smart enough to compare it to a york, but I think it might be pretty damn close.

So has anyone taken their york apart?





__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Old 11-30-2001, 11:43 PM   #2 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
BTW, I never used a filter either
__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 11-30-2001, 11:56 PM   #3 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
The 10 ci yorks are 2 cylinders, have a bore of 1.875, and a stroke of 1.866. At a glance, it looks like the motorcraft may push more cfms.

__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
 
Old 12-01-2001, 12:00 AM   #4 (permalink)
Registered User
 
Join Date: Mar 2001
Member # 3834
Location: Merrimack, NH
Posts: 1,036
Send a message via AIM to Bgcj5
Interesting thread keep it going!
__________________
Just
Empty
Every
Pocket
Bgcj5 is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 12:08 AM   #5 (permalink)
Poseur SUV
 
Paul Gagnon's Avatar
 
Join Date: Apr 2000
Member # 610
Location: Sherwood Park, Alberta eh?
Posts: 23,695
Send a message via ICQ to Paul Gagnon
I wonder if you could modify the Motorcraft pump to hold oil in the crankcase.
__________________
Paul Gagnon
Sherwood Park, Alberta eh?
"No Brain, No Pain"
Paul Gagnon is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 01:25 AM   #6 (permalink)
Registered User
 
Join Date: Apr 2001
Member # 4073
Location: St. Paul, MN, USA
Posts: 1,410
My Ford shop manual says the FS-6 compressor has 10.4 ci displacement.
__________________
Dustin S.
I had a brain-eating disease that died of starvation.
Dustball is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 09:34 AM   #7 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
Quote:
Originally posted by Dustball
My Ford shop manual says the FS-6 compressor has 10.4 ci displacement.
Wow that's great! Now I have to decide if I actually want to upgrade.....er downgrade to my york. Maybe I should just run both!

Paul it appears the in the intake actually goes through the "crankcase". It doesn't look like this pump needs any mods though. I can't find any signs of wear.
__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 09:37 AM   #8 (permalink)
Registered User
 
Join Date: Mar 2000
Member # 430
Location: The Desert
Posts: 221
I've been saying forever........

Yorks are overrated!

Unless they fit stock in your vehicle I see no reason to waste even 50 cents on one.
__________________
_ __ _
AtomicBeesting is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 09:38 AM   #9 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
I've been looking for more info on the FS6 pump, and I keep coming across the term "variable displacement". It seems that all the rotory style pumps are variable displacement. What the heck does that mean?
__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 10:15 AM   #10 (permalink)
Registered User
 
Join Date: Dec 2000
Member # 2587
Location: 38*45.859N 120*34.534W (N. Ca) Future location of beachfront property.
Posts: 3,939
Yorks ARE overrated. I have used gm/ fridgidaire A6's for years. They outpump yorks like nothing else. Similar design as the one above: 6 pistons, TEFLON rings. And they bolt on chevy motors (is there anything else?)with factory brackets. no lube and no blowby. Teflon ROCKS!!
Aggro is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 10:22 AM   #11 (permalink)
Registered User
 
Join Date: May 2001
Member # 4406
Location: Denver
Posts: 2,380
Is the A6 the old style long ones? Thats what I've been running on mine for a few years (came stock on the truck). It did actually partially sieze up on me this year (first time I tried to use it this year). I put some oil in the intake and it seems to be ok now. Any idea on the displacement of them?

Pete
__________________
Life should not be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways , beer in hand, body thoroughly used up, totally worn out and screaming "WOW, what a ride."
pcorssmit is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 11:10 AM   #12 (permalink)
Registered User
 
Join Date: Oct 2000
Member # 2029
Location: phoenix az
Posts: 1,102
yorks overrated?? duhhh, why do you think the auto man. changed the style?? the only thing "better" about the york for an air pump is its own oil res. i have a york on my OBA but thats mostly because it was stock and it has the oil res.
__________________
75 BDJ55
get inline, you'll be fine.
RHINO is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 09:48 PM   #13 (permalink)
 
Join Date: Jul 2000
Member # 1385
Posts: 345
I've used this pump for onboard air for a good 8 years. After the first couple of years, I pretty much gave up oiling it. It maybe saw 1 or 2 caps of oil a year.



if you had to guess how many hours do you think you have run the pump?
mrs. camo is offline   Reply With Quote Quick reply to this message
Old 12-01-2001, 10:40 PM   #14 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
Quote:
Originally posted by mrs. camo

if you had to guess how many hours do you think you have run the pump?
Wow, that's a tough one. The first couple years I had it, it seemed I was the only one with air. As you could imagine I was airing up a lot of tires. I also ran without a tank for 3-4 years. I just used a free flowing air chuck.

Most the time I aired my bronco and one other vehicle up. I wheel at least every other weekend. I dunno

I'm trying to figure a guesstimate, but I keep coming up with ERROR. It's seen a lot of use, that's for sure, pluss the years of service as an actual a/c pump(1984) No signs of wear.


So does anyone know what "variable displacement" is?
__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Old 12-02-2001, 11:29 AM   #15 (permalink)
Registered User
 
Join Date: Apr 2000
Member # 595
Location: Snohomish WA
Posts: 1,624
Quote:
Originally posted by Nobody


Wow, that's a tough one. The first couple years I had it, it seemed I was the only one with air. As you could imagine I was airing up a lot of tires. I also ran without a tank for 3-4 years. I just used a free flowing air chuck.

Most the time I aired my bronco and one other vehicle up. I wheel at least every other weekend. I dunno

I'm trying to figure a guesstimate, but I keep coming up with ERROR. It's seen a lot of use, that's for sure, pluss the years of service as an actual a/c pump(1984) No signs of wear.


So does anyone know what "variable displacement" is?
How did it work yesterday?
__________________
1967 Bronco for sale $13,000 in classifieds
Injected 5L, Dana 60, ARB, Swampers, Hydroboost
EBSTEVE is offline   Reply With Quote Quick reply to this message
Old 07-12-2002, 07:16 PM   #16 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
Quote:
Originally posted by Nobody

So does anyone know what "variable displacement" is?
C'mon..... it's been 7 months now! anyone?

actually I just happened across this thread and decided give it a bump!
__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Old 07-12-2002, 08:11 PM   #17 (permalink)
Registered User
 
Join Date: May 2000
Member # 940
Location: Lincoln, Ca
Posts: 4,719
Quote:
Originally posted by Aggro
Yorks ARE overrated. I have used gm/ fridgidaire A6's for years. They outpump yorks like nothing else. Similar design as the one above: 6 pistons, TEFLON rings. And they bolt on chevy motors (is there anything else?)with factory brackets. no lube and no blowby. Teflon ROCKS!!
So what does that pump come on and what shape is it?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Deep Cryogenic Tempering Service
[b][SIZE="5"]Find all my products at[/SIZE][/b]

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

[b][SIZE="4"]916-434-6978
Custom Sway Bars and Axles built to order. [/SIZE][/b]
[b][SIZE="5"]Got 40 spline? I have the hubs, spindles, and axles you need to kickass![/SIZE][/b]
Custom Hummer wheels and centers
Axle Resplining
66CJdean is offline   Reply With Quote Quick reply to this message
Old 07-12-2002, 09:06 PM   #18 (permalink)
Registered User
 
Join Date: May 2000
Member # 784
Location: Plano, TX
Posts: 1,426
Variable displacement compressors were designed to elimintate the cycling of the a/c clutch. There is a waved plate which changes the 'stroke' essentially
__________________
Think for yourself
JEEPRZ is offline   Reply With Quote Quick reply to this message
Old 07-12-2002, 09:42 PM   #19 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
Quote:
Originally posted by 66CJdean

So what does that pump come on and what shape is it?
That pump was on my 2.8L in my 84 bronco II, but I think it was the main pump ford used in that era. This is what it used to look like.... I've got a little bigger engine now ........... I need too adjust my radiator before I can mount the york. Been a year without air now.....sucks! I actually carry two spares and transfer hose, which is enough to air up at the end of the day. Still can't wait to get on-board air II up and running. I'm going to do a much better job.

__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Old 07-12-2002, 09:44 PM   #20 (permalink)
Registered User
 
Join Date: May 2000
Member # 848
Location: Stanwood, WA
Posts: 5,297
Quote:
Originally posted by JEEPRZ
Variable displacement compressors were designed to elimintate the cycling of the a/c clutch. There is a waved plate which changes the 'stroke' essentially
There is a waved plate, but the a/c system had a hi/low pressure cut out, so the pump cycled like any other.

I still don't really understand what variable displacement means though.
__________________
SNOWTREK.org
Nobody is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Pirate4x4.Com : 4x4 and Off-Road Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.

** A VERIFICATION EMAIL IS SENT TO THIS ADDRESS TO COMPLETE REGISTRATION!! **

Email Address:
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 06:19 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.