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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Belt tensioner setup 1992 fox body

  • Thread starter Thread starter Swhitney
  • Start date Start date Feb 11, 2019
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Swhitney

Active Member
Feb 11, 2019
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Oregon City
Feb 11, 2019
#1
  • Feb 11, 2019
  • #1
I have been running a ghetto belt tension setup for some time now. I finally got a wild hair to fix the problem, but need some advice with part numbers to fix the problem.

1992 Mustang 5.0 with no power steering, AC, or smog pump. The correct belt tensioner broke a long time ago and I have no idea which one was the correct one for this setup. I threw the stock one on with some convincing which is functional, but there is no give in the belt and has caused extra wear on the alternator bearing.

See attached photos for reference.
 

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Steel1

Mustang Master
Aug 18, 2017
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Connecticut
Feb 11, 2019
#2
  • Feb 11, 2019
  • #2
You could run one of the turnbuckle manual tensioner set-ups from March etc.
I run something similar on my 393w
https://marchperformance.com/ford/f...2-alternator-bracket-with-adjustment-rod.html
The link is just an example, you'll need to determine exactly which on for your application.
Not trying to be a smart ass but looks like you have a coolant leak in the pic.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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polk county florida
Feb 11, 2019
#3
  • Feb 11, 2019
  • #3
Those hoses are cheap 'one size fits a bunch of stuff' and don't last for crap, they look cheezy too, but then you're planning on replacing them when you fix the coolant leak. Right?
 

JD1964

there is enough sticking out to grab on to
15 Year Member
Jun 28, 2013
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Feb 11, 2019
#4
  • Feb 11, 2019
  • #4
Put the stock one on and if the belt is the wrong size, get on that is longer or shorter accordingly.

http://www.gatesracing.com/assets/GatesRacing/files/428-3291 RPM Belt Dimension List LORES.pdf
 
S

Swhitney

Active Member
Feb 11, 2019
184
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Oregon City
Feb 11, 2019
#5
  • Feb 11, 2019
  • #5
That is the stock belt tensioner but because the car is missing a bunch of accessory’s it required a different routing style.
I plan on replacing the a few things on the front of the engine and cleaning her up.

Refer to the attached picture of an idea.
 

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FastDriver

I was uncomfortably high & wearing a helmet
SN Certified Technician
Sep 5, 2001
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Vass, NC
Feb 11, 2019
#6
  • Feb 11, 2019
  • #6
Use a stretch belt. Note, this is not the correct size, it's just an example: LINK It stretches under load to maintain proper tension. Therefore, you don't have to worry about the tensioner doing its job.


Now, if you want to ditch the tensioner and go with an alternator bracket with adjustment rod, then I'm not sure how you'd do so without a non-reverse direction water pump. Without anything on the opposite side of the waterpump from the alternator, you don't need it to reverse rotate.
 

90sickfox

Wasn't a pretty sight...and I've got big hands
SN Certified Technician
Mar 2, 2015
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Feb 11, 2019
#7
  • Feb 11, 2019
  • #7
That last picture would need a different water pump and pulley from the original. In that picture the water pump would spin backwards. The water pump would also need a grooved pulley.

You need to do some jy hunting to find a 6 ribbed water pump pulley and order a standard rotation water pump. This may also require you to change the timing cover also. The gasket is usually just a circle hole so may not need the timing cover. After that all your need is this...



You want a 1984 lincoln town car 5.0 water pump...according to this....



...and a 6 rib alternator pulley.

The interwebs are great......sometimes.
 
S

Swhitney

Active Member
Feb 11, 2019
184
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Oregon City
Feb 11, 2019
#8
  • Feb 11, 2019
  • #8
The image above looks nice! What size belt is that? I would have to get a new water pump with reverse rotation.
 

FastDriver

I was uncomfortably high & wearing a helmet
SN Certified Technician
Sep 5, 2001
6,098
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Vass, NC
Feb 11, 2019
#9
  • Feb 11, 2019
  • #9
To clarify, the stock fox waterpump is reverse rotation. You need standard rotation.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
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Feb 11, 2019
#10
  • Feb 11, 2019
  • #10
Looks like that water pump has been changed, I'd verify what you have or just buy the pump you need, not that expensive and you'll know what you have.
 

fredfifty

5 Year Member
Nov 23, 2011
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Feb 13, 2019
#11
  • Feb 13, 2019
  • #11
isn't the tensioner pulley smooth, not ribbed? because wouldn't that affect the routing? (smooth to smooth, ribbed to ribbed)
 
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