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EL XR Upper control arms. Anyone have pics? 

 

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 Post subject: EL XR Upper control arms. Anyone have pics?
Posted: Sun Mar 04, 2007 6:42 pm 
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Ok i just replaced the lower control arms on my EL Fairmont ghia with the boxed type Nolathane arms (made the rear alot quieter and tighter). Anyway the pinion angle still isnt correct with the Angle master. Now does anyone with an EL XR6 or 8 have any pics and possible lengths on the upper contol arms. If there isnt any real difference i will just have to space up the trans to get the front and rear within 1 degree angle. Any help would be great thanks.
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Posted: Sun Mar 04, 2007 7:26 pm 
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here, you can just see the kick on the ends.

 

 

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Posted: Sun Mar 04, 2007 7:45 pm 
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Thanks for the super quick reply, i knew about the bend on the rear but are they a different length to the standard EL upper control arms (320mm from memory between holes) and do the XR type mount to the rear holes on the diff? not the fronts as standard on non XR's?
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Posted: Sun Mar 04, 2007 8:12 pm 
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EF and EF/L XR are the same length at 340mm
EL sedan are 320mm. The difference between xr and non XR s the bend at the end shown in Krytox's pic. Hope this helps.

 

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Posted: Sun Mar 04, 2007 8:14 pm 
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From my understanding the EL STD ride height ones are 320mm vs. 340mm XR hole to hole.

 

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Posted: Sun Mar 04, 2007 8:17 pm 
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That 340mm would make sense as the rear mount hole on the diff is about 20mm further. It would also adjust the geometry when the car is lowered the same as an XR. I posted Phongus about his EL XR6 upper control arms.
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Posted: Sun Mar 04, 2007 8:31 pm 
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yeh, in theory the diff rolls up instead of staying straight.
I had these in my car, and every bump I took on the way to adelaide I was rubbing the tail shaft on the tunnel (just b4 the yoke).

I installed std EL arms and the problem is no longer existant.

overall I found the EF arms on the EF diff was the best combo for me. however Both XR diffs I aquired were EL's.. and I decided to change the watts link and arms all in one hit... then I had the probs.... 10mths later i fixed it :/

 

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Posted: Sun Mar 04, 2007 8:53 pm 
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Yeah the EF upper arms are 350mm between holes. But the geometry was changed for the EF II and EL. Now my EL Fairmont LSD diff has 3 mounting holes for the upper arm with a cage that holds a nut that has the option to mount on only 2 of them. I was guessing the rear hole would be for the XR arms! I will wait for a reply from Phongus and go from there.
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Posted: Sun Mar 04, 2007 8:56 pm 
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To my knowledge, EL arms are shorter by one inch. EF are longer. However EL's have the three mounting holes to change pinion angle.

 

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Posted: Sun Mar 04, 2007 9:14 pm 
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I think too, that the upper mountings on the diff are a different angle than previous EF.

 

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Posted: Sun Mar 04, 2007 9:17 pm 
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there are 3 types or arms alltogether.
and 2 diff's!

EF diff has one set.
EL has 2 sets. (xr and non)
The Third hole on the EL diff is for provision for backwards compatibility.
so yes, you could use the TOP hole with EF arms on an EL car. (watts link and handbrake setup will need to be changed too)

None are made to change angle just by changing the hole, you need the required arms to do so correctly.

 

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Posted: Sun Mar 04, 2007 9:23 pm 
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The EL has 3 holes on the diff but only 2 can be used unless the cage for the nut is removed. The 3 holes are too extreme to simply change the pinion angle with standard upper control arms. This is why im asking about the XR type of arms with a bend in the rear of them. Dont forget that the pinion angle should not exceed 4 degree and the mounting holes on the diff are about 15mm (x3) apart which would well exceed the desired angle with just the standard arms
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Posted: Sun Mar 04, 2007 9:23 pm 
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I remember being told in Ford school, that the diffs were not inter changeable, because of the mountings on top off the diff for the upper arms.

 

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Posted: Mon Mar 05, 2007 10:26 am 
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Such a simple question, yet so hard to answer.

If you have purchased the 320mm (Centre to Centre - Part 46905) arms, they are standard EL length and go into the higher front hole that the captive nut runs to. But if you are running lowered springs, using these arms will cause vibrations as you have assumed by reading the pinion angle.

If you have purchased the 340mm (Centre to Centre - Part 46900A) arms, they are the EL XR length, and go into the lower rear hole that the captive nut runs to. Using these arms in your diff will cause no vibrations or problems with the diff. Its really the only way to lower the rear end of an EL to superlow or ultra low height without any problems. It obviously causes the pinion to sit within the required angles.
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Posted: Mon Mar 05, 2007 11:08 am 
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arm79 wrote:
Such a simple question, yet so hard to answer.

If you have purchased the 320mm (Centre to Centre - Part 46905) arms, they are standard EL length and go into the higher front hole that the captive nut runs to. But if you are running lowered springs, using these arms will cause vibrations as you have assumed by reading the pinion angle.

If you have purchased the 340mm (Centre to Centre - Part 46900A) arms, they are the EL XR length, and go into the lower rear hole that the captive nut runs to. Using these arms in your diff will cause no vibrations or problems with the diff. Its really the only way to lower the rear end of an EL to superlow or ultra low height without any problems. It obviously causes the pinion to sit within the required angles.



I have the standard EL upper arms on now (320mm) and they are mounted to the front lower holes on the diff. They cannot mount to the top holes as you say as the pinion angle would be way too much and there is a cage holding the nut that only has the option for the front or rear holes. Would be great if anyone has a pic of the XR setup fully mounted.
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