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  #1  
Old August 8th, 2013, 02:36 AM
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Mark Bichin
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A arm extension help

I've done the search and I can't find a definitive pic of how the RTE A arm extension is supposed to sit.

The shop I'm getting it installed at hasn't put one in before.

Does this look right?



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I've seen pics with the notch toward the front and pics of the notch over the ball joint???

Help!
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  #2  
Old August 8th, 2013, 08:33 AM
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If the holes aren't offset from each other than it shouldn't matter. Have you tried calling RTE?
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Present:
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Past:
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  #3  
Old August 8th, 2013, 10:42 AM
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Mark Bichin
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The holes are offset front the middle of the block.
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  #4  
Old August 8th, 2013, 10:54 AM
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if the holes aren't offset from EACH OTHER than all you are doing is lowering the axle i.e it doesn't matter which way the block is oriented. Usually the lower pair of holes are set back from the upper pair in order to force the axle back. This, along with cranked radius arms and radius arm spacers serves to correct the pinion angle after a spring lift. Looking at RTE's website they state that the setback of the bolts is to the customer's specification i.e specific to their truck. So, is your part new or did you get it 2nd hand and just assume it was correct for your setup?

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Originally Posted by Arcadeus View Post
The holes are offset front the middle of the block.
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  #5  
Old August 8th, 2013, 10:54 AM
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i'll see if i can get a pic of mine tonight
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  #6  
Old August 8th, 2013, 11:28 AM
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Quote:
Originally Posted by Ren Ching View Post
if the holes aren't offset from EACH OTHER than all you are doing is lowering the axle i.e it doesn't matter which way the block is oriented. Usually the lower pair of holes are set back from the upper pair in order to force the axle back. This, along with cranked radius arms and radius arm spacers serves to correct the pinion angle after a spring lift. Looking at RTE's website they state that the setback of the bolts is to the customer's specification i.e specific to their truck. So, is your part new or did you get it 2nd hand and just assume it was correct for your setup?
Sorry, I wasn't clear.. The upper set ( there are four for two different positions - one for dc shaft and one for standard drive shafts) is offset from the lower set of holes. I did buy this used but I believe rte sells a "stock one" for their 3" lift or you can order a custom one...
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  #7  
Old August 8th, 2013, 11:55 AM
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I just talked to my mechanic and he said it only fits the one way... If you try to flip it the a arm joint gets in the way... The picture must be deceptive because he told me that the pinion angle was tilted upwards pointing at the transfercase pinion as in should be with a dc driveshaft... Regardless of how the bolts line up, the drive line angle looks right in the pic or am I off my rocker?
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  #8  
Old August 8th, 2013, 01:14 PM
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or am I off my rocker?
You own a Defender, you tell me...
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  #9  
Old August 8th, 2013, 01:16 PM
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Originally Posted by o2batsea View Post
You own a Defender, you tell me...
Lol.. Takes a certain breed :P
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  #10  
Old August 8th, 2013, 11:36 PM
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Okay.. It's mounted and everything is correct right...NOT!!!


The damn thing hits the tank during compression... I know some of you run these... Did you have this issue and how did you solve it?
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  #11  
Old August 9th, 2013, 02:14 AM
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About now is the moment we all wonder why we love these dang trucks.
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  #12  
Old August 9th, 2013, 11:34 AM
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Bump... Lifted trucks out there? How did you avoid it hitting the tank?
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  #13  
Old August 9th, 2013, 12:10 PM
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Mark,

What is the "damn thing hits the tank"??

Do you have pictures?

Someone did a good write up in dweb

http://www.discoweb.org/aarm/index.htm

Not a D90. but you get the picture
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  #14  
Old August 10th, 2013, 01:06 AM
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Mark Bichin
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Quote:
Originally Posted by The Dro View Post
Mark,

What is the "damn thing hits the tank"??

Do you have pictures?

Someone did a good write up in dweb

http://www.discoweb.org/aarm/index.htm

Not a D90. but you get the picture
The damn thing hitting the tank is the a arm swivel ball...

I've seen that write up.. It's good but not helpful in my case because its a disco because

I talked to Bill at rte today... Really nice guy.. Had a lot of knowledge. I picked his brain for about an hour...

He says there is a common problem but only on D90s and the a arm block is different on them than on discos!

One of the few suspension components that are...

He gave me a suggestion to try out...

Mainly snug my rear arms right up (adjustable because they are the curry jointed ones) and use the set of holes on the a arm block that is normally used for std type driveshafts... Mine is dc...

I figure that snugging up the rear links will tilt the pinion way up and using the normal driveshaft holes will bring it down to somewhere a dc driveshaft will be happy in...

I think I'm just going to order the proper block and be done with it...

Anyone need an A-arm block for their disco?
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  #15  
Old August 10th, 2013, 01:54 AM
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How much lift are you running. You likely do not need an extension at all.
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  #16  
Old August 10th, 2013, 02:07 AM
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It about a 3" lift... I can fix the pinion issue with my rear links but the block adds to your travel by allowing your axle to droop that much farther before your a arm binds... (At least in my case )

Also using the block/rear links together to get your correct pinion allows the springs to sit relatively straight without using wedges (one offsets the other... Two slight adjustments vs one major)
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