(Not sure this is "interior" or engine)

I'm getting close to finishing interior restore on my 1970 car. Anybody have a list of what I should absolutely replace in the rear area, in terms of hoses, grommets, etc? (before I reinstall the panels). Will review Wick again, but he was also writing a lot closer to 1970, 55 years probably different equation than 10 years.

If you are running the fuel vapor container there are several hoses that usually need replacing. The primary ones are two large ones from the fuel tank that come up thru the deck. One deck point is shown here, note the rubber collar that seals it. The other deck point is by the left taillight, not shown. When I refurbed my car 15 years ago I was fortunate to get Nissan OE hoses but sadly they are now NLA. There are threads on this forum about substitute materials. The two large hoses pass thru a support bracket with grommets to protect against chaffing. There are also two small lines on the vapor container, one high and one low. One is connected to the hard lne that runs to the flow guide valve in the engine bay, the other is connected to the fuel tank.

I was able to drop the tank today. Of the 2 grommets you mentioned, I only had 1 on the car, and it was crumbling. I think I'll replace all the lines. I'm not 100% sure when these were last done, but they've also been sitting 7-8 years without the car running.

Can I get an assessment of the condition of the inside of the tank? There was about 5 gallons in it. It has had some kind of yellow/green treatment applied inside I think. I didn't see any sludge or rust that I recognized. But I have never looked in a tank before so I don't really know what "bad" looks like.

Looks like the tank has been sealed with a gas tank sealer. Did a quick search and the "PPG 833K086 Yellow Fuel Tank Coating 1.5 gal Kit" is a likely candidate for your yellow tank interior. From your pics it looks pretty clean!

@Warty I followed this guy's guide to the hoses when I refurbed my tank back in 2017. The hoses were all the exterior braid so they look stock.

Datsun 240Z GasTank refresh - WoodWorkerB

Interesting... Back when I did mine I ended up using the original hose for this one as mine was in decent shape and this particular hose seemed to be unobtanium at that time.

Gas Tank Vapor Hose for Datsun 240Z 260Z 1969-1974 Genuine Nissan NOS – JDM CAR PARTS

Edited July 12Jul 12 by w3wilkes

7 hours ago, w3wilkes said:

@Warty I followed this guy's guide to the hoses when I refurbed my tank back in 2017. The hoses were all the exterior braid so they look stock.

Datsun 240Z GasTank refresh - WoodWorkerB

Interesting... Back when I did mine I ended up using the original hose for this one as mine was in decent shape and this particular hose seemed to be unobtanium at that time.

Gas Tank Vapor Hose for Datsun 240Z 260Z 1969-1974 Genuine Nissan NOS – JDM CAR PARTS

Resurrected Classics has a reproduction hose set now. I have a set waiting to go into the 73. https://resurrectedclassics.com/collections/weatherstrip-and-rubber/products/gas-tank-vapor-hose-set-for-240z-260z-1970-1974-datsun

3 hours ago, SteveJ said:

Resurrected Classics has a reproduction hose set now. I have a set waiting to go into the 73. https://resurrectedclassics.com/collections/weatherstrip-and-rubber/products/gas-tank-vapor-hose-set-for-240z-260z-1970-1974-datsun

Great find, wish this had been available 9 years ago!

20 hours ago, w3wilkes said:

Looks like the tank has been sealed with a gas tank sealer. Did a quick search and the "PPG 833K086 Yellow Fuel Tank Coating 1.5 gal Kit" is a likely candidate for your yellow tank interior. From your pics it looks pretty clean!

Awesome! That's great news.

The fuel pump installed is an after market one (https://www.ebay.com/p/1233674301 - Stewart Warner 82050). I don't know when it was installed.Perhaps with the 1980s overhaul.

1) should I proactively replace this with a new one while I have the tank out?
2) there is a white wire coming out of it, but not going anywhere (see pic). Not sure if it was NEVER used, or was just disabled at some point. It is definitely still in the loop as far as fuel lines go. The car WAS running fine before I started taking it apart bit by bit, and the mechanical pump up front (see 2nd pic) looks newer too. Should I remove this entirely?

There was also a black write that ran down from the aft deck, down to the tank area. But it wasn't hooked up on EITHER end. obviously doesn't affect running of car, but any idea what that might have been in the past?

Finally, what do you call these rubber boots on the fuel gauge lines. They are torn, and I want to get some new ones.

The mechanical fuel pump appears to be after market. It's your choice whether to stick with mechanical or electric fuel pump. On my 12/70 car I converted to electric fuel pump back in 2017 and am happy with that decision. Seems like there have been recent problems with some of the after market mechanical pumps. If it's originality you're after they were mechanical. There is the fact that even though they were mechanical, the stock wiring harness was installed to support the electric pump at the tank that made the conversion easy for me.

Here are the rubber covers

https://www.240zrubberparts.com/product-page/240z-fuel-pump-sending-unit-wire-boots-set