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Are these OEM steering knuckles? (S30)


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Hey guys.

 

Quick question, are these steering knuckles stock? I could have sworn I had the quick steering knuckles installed, but these seem awful long. The only details I can find online is that the quick steering knuckles are 10mm shorter than OEM. The pictures online don't quite leave me confident, either. (Parallax error + low res photos.)

 

Details:

  • I see a Nissan / Datsun shield cast into them, but it appears the MSA and new-datsun-parts.com offerings are made by Nissan Competition, so that doesn't help. (Very cool, though!)
  • Overall length is 7" (190mm)
  • Length from center of ball joint hole to center of steering arm hole is 4 3/8" (110mm)

 

Thanks guys!

 

post-657-0-65021200-1416342139_thumb.jpeg

post-657-0-98996700-1416342146_thumb.jpeg

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It does, thanks Daniel! As luck would have it, new-datsun-parts sent me the attached picture.

 

Two confirmations leave me with a tingling warm fuzzy... I clearly have OEM knuckles. Problem solved!

 

 

Quick steering knuckles:

post-657-0-63142700-1416346385_thumb.jpg

Edited by zredbaron
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Thanks Jon, confirmed as per the pic below and the fact the 3/8" difference equates to 10mm. Weird how that works... haha.

 

I figured I'd upload a pic of the stock steering knuckles with a ruler in case anyone is searching for this info, now it will be forever archived on HybridZ...

 

 

Stock steering knuckles:

 

 

post-657-0-21396000-1416369674_thumb.jpeg

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  • 2 weeks later...

Arizona Z Car is the only vendor I know of that has these in stock *right now.* 

 

knucke4.jpg

 

I don't like these for two reasons 1) they are aluminum and not as strong as steel and 2) the geometry is basic. The stock and competition arms are made by Nissan and Nissan Competition respectively, and the steering arms themselves are asymmetrically angled in alignment with the angle of the tie rods from the steering rack. The hole expecting the ball joint is also deliberately off-center. As we say in aviation, you aren't going to out-engineer the engineers. (Not always true, especially in the restomod arenas, but I trust Datsun/Nissan's design more than I trust AZC for this particular part.)

 

The two vendors I know of for the pricey competition / quick steering knuckles are:

  1. Motorsport Auto (http://www.thezstore.com/page/TZS/PROD/PSDC11/23-4181)
  2. New Datsun Parts (http://www.new-datsun-parts.com/datsun-240Z-parts-exterior2.html)

Unfortunately, neither have them in stock. Both vendors are waiting on Nissan of Japan. MSA has an order in, but no expected arrival date. I ordered New Datsun Parts' only pair two weeks ago, only to receive two RH parts with no LH part available (evidently the error was on Nissan of Japan's end).

For now, I'm waiting on Japan and putting the stock knuckles back in the car.

 

I can attest for the stock knuckles' strength... I tried to bore the steering arm hole to 5/8" to receive upgraded tie rod mounts (TTT), but my DeWalt 20V drill lacked the torque to cut through them. Off to a machine shop I go!

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