78 280z fuel tank drain plug

[AZDatsun]

I am trying to find a good replacement for the gas tank drank plug and washer. Does anyone know where to get them? My washer is disintegrated and the bolt has a slow leak and I am not even sure it’s the correct plug.

 

 

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[Zed Head]

Pretty pretty pretty sure that somebody out there knows the thread pitch and  size but here's a link to the Nissan part numbers.  They call it a plug and packing.  Talk about translation problems.

http://www.carpartsmanual.com/datsuns30/Datsun-Z-Index/Engine-280Z/Fuel-Tank/From-Jul-76

[grannyknot]

BIG EDIT Sorry about this but the 1/2"x20 is completely wrong, You are looking for an M8x1.25 bolt.

I was looking through my notes and 1/2"x20 is what I have there but that must be for something else, I just went out to the storage shed to dig out the gas tank. A 1977 280z gas tank has M8x1.25 drain bolt.

Note to self, re check my notes

Edited December 9, 2018 by grannyknot

[Patcon]

I also found it to be a standard thread and not metric. I found that odd but didn't fight it.

[grannyknot]

5 minutes ago, Patcon said:

I also found it to be a standard thread and not metric. I found that odd but didn't fight it.

Actually, I'm still trying to find mine, I removed it when I was restoring the tank and put it somewhere safe, so safe it still hasn't shown up, I may have to make one.

[Patcon]

6 minutes ago, grannyknot said:

Actually, I'm still trying to find mine, I removed it when I was restoring the tank and put it somewhere safe, so safe it still hasn't shown up, I may have to make one.

Don't you hate it when you do that! I have a roll pin I took out of something. Put it in a conspicuous place in the shop so I wouldn't lose it.

I still have it, but I forgot what it came out of....

[AZDatsun]

Well the plug is still available but it looks like but the “packing” is NLA. what should I use to replace the washer? (Correction both are NLA)

 

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[AZDatsun]

Well this is interesting https://parts.nissanusa.com/nissanparts/index.cfm?action=replacement&siteid=14&jointvehid=18157&groupid=B&sectionid=172&partcode=17201A



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[SteveJ]

Well, if the 1/2 x 20 is correct, this would probably work: https://www.amazon.com/Needa-Parts-652036-Drain-Plug/dp/B000CHL58M

Or this: https://www.summitracing.com/parts/sdk-d1az-6730-a/overview/

[AZDatsun]

The part 01125-00062 is also on the 1985 200sx and the “packing” and both are still available. Going to order today and see what I get

 

 

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[grannyknot]

33 minutes ago, ryanotown22 said:

Well the plug is still available but it looks like but the “packing” is NLA. what should I use to replace the washer? (Correction both are NLA

 

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@ryanotown22, my apologies, see post #3.  Forget the 1/2"x20 that is completely wrong, my notes are wrong. The drainage bolt you are looking for is a M8x1.25,  I just checked my gas tank and it is M8x1.25,  what a twit.

The problem with a standard M8x1.25 is the bottom of the head isn't really flat and there is not much of it to get a crush washer to do its job. The original drain bolt had a larger head with a machined flat bottom for a good seal.

The "packing" is the copper or aluminum crush washer.

Edited December 9, 2018 by grannyknot

[AZDatsun]

Ok thanks if the parts I just ordered don’t fit I will just pick that up. Btw my order total price came to 2.18 for the plug and washer from Nissan with local pickup

 

 

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