I know it's a bda idea to use coolant/windshield washer hose for fuel, but what about the reverse? I am replacing the hoses on my 73 and the hose between the thermostat housing and the balance tube of the intake manifold is no longer available. It looks like I should be able to just use some 5/16" fuel line for the short distance.

Originally posted by 240ZMan

I am replacing the hoses on my 73 and the hose between the thermostat housing and the balance tube of the intake manifold is no longer available. It looks like I should be able to just use some 5/16" fuel line for the short distance.

I would think that it would not be a problem at all to use either fuel or water rated hose in this application. Interesting that you mention the hose you need is NLA. It must be a different one than what is used for 1972 Z's, as I just got one from Courtesy Nissan in TX about 3 months ago.

You may want to check w/ Chloe at Midwest Z. She can get stuff that other people seem unable to get.

I agree it might be overkill but it would work ok , have you checked msa , I remember when ordering my thermostat housing they asked about that hose if I needed it , they show it as part #16-8016 and 5.57 as in price , just for info , good luck Jeff:geek:

Actually, it was MSA's catalog I was ordering from. I was looking for 16-8015 as I have a 73. The part number you mentioned says it's for a 74 in the catalog I have so I didn't ask about that part.

I have some 5/16" fuel line and the bend doesn't look too bad, so I'm not going to look further. After all, that portion of the coolant circuit is only for the intake manifold.

my bad I thought yours was a 74 , but no biggie as long as the bend is not bad , and I bet still cheaper, I hear there is a built in thermostat for the manifold itself so when it reaches like 86 f it cuts off the water to it any way

Fuel line is ok for water/coolant --- but not the other way around.

- Jeff

Another option would be to take the old hose to a auto parts store and ask the parts clerk to match the hose with something he's got in stock.

really doesn't matter, just make sure it's sealed up. Heating up the manifold really isn't a biggie....i've had it blocked up and open, but I do know that stock hose will kink right there.

Get it from MSA, at least I did a couple of years ago.