Lower Steering Shaft - which one to use? - Defender Source
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Old August 29th, 2014, 11:03 AM
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Lower Steering Shaft - which one to use?

For my project I'm starting to piece together items onto the bulkhead and will probably start the steering end of things at some point soon.

Here is a link to the different options: http://www.roversnorth.com/Land-Rover-Parts/985

It looks like NAS style is: RTC4738

But ROW is: QME500031 - lrseries.com says that part number is Defenders up to 2006

Is one design better than the other? Does the NAS one "break" away when in an accident?

Cost wise it looks like the QME500031 is all one piece while the RTC4738 will need upper and lower U-joints.

I am using an Adwest PS box from a Disco I. Upper steering will be either pulled from the old truck or I might go 48 spline.

Thanks in advance for any input.
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  #2  
Old August 29th, 2014, 11:53 AM
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The one piece is the Td5 part. That is the one that clears a disco 200tdi down pipe on the left. Otherwise, they are both compress designs in the event of an accident. Not sure one is better than the other.
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Old August 29th, 2014, 12:07 PM
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If it matters, the NAS one meets US FMVSS (pre-SRS mandate) and compresses further than the ROW.
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Old August 29th, 2014, 01:43 PM
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Quote:
Originally Posted by Uncle Douglas View Post
The one piece is the Td5 part. That is the one that clears a disco 200tdi down pipe on the left. Otherwise, they are both compress designs in the event of an accident. Not sure one is better than the other.
Thanks Doug - my OM617 oil cooler lines are right there so if the ROW one is tighter it might work better. Might not be that critical tho.

------ Follow up post added August 29th, 2014 01:47 PM ------

Quote:
Originally Posted by crown14 View Post
If it matters, the NAS one meets US FMVSS (pre-SRS mandate) and compresses further than the ROW.
Thanks for that info Crown - I guess that is what I was meaning in that question in my original post. It looks like in the event of a heavy enough crash it breaks away by design. Good to know that piece of info.

Will need to take a closer look when I get home tonight and see what sort of clearance I need with those lines. They are AN stainless so I should be able to figure something out.
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