I'm trying to bring my '71 back to as close to original as practicable.  I went to ZCar Depot and ordered two-wire hoses clamps.  The rad and heater clamps worked fine, but the fuel-line clamps just won't tighten down on the rubber 5/16 hoses.  They tighten, but no much that you can't easily twist them on the steel lines.  Apparently the original fuel hoses had a bit greater o.d. than do modern hoses.  

Any suggestions would be welcome.

I recall the clamps I used were 6-7mm, (used braided hoses).

On 10/5/2022 at 1:44 AM, Richard McDonel said:

won't tighten down on the rubber 5/16 hoses.

Thats because they don't have enough grip on small lines.. get the once with the flat steel all around, see pic..

 

And like here on the fuelpump!

They are about 8mm  .....or as you guys say 5/16th....   

 

Edit.. i never saw the 2 wire clamps on the fuel lines, maybe because they leaked from the start? i find these flat band clamps ideal for small lines/tubes..

Edited October 6, 20222 yr by dutchzcarguy

Here is a photo of my 5/72 low miles, very original 240z...prior to starting my refresh project.

bluez,

Yes, the originals were braided, but between parts stores and an industrial hose shop, I haven't been able to find anything similar.  There are of course braided steel hose as commonly used on race cars, but these aren't much of a match.

There’s a good source for braided hoses, BelMetric in Ma. All different sizes.

https://belmetric.com/m5x10-braided-flennor-multifuel-hose-rhm5braid/

Here is my recent post on this topic, all new braided cover fuel hoses and valve cover breather hose - all from Belmetric. And yes... twin wire hose clamps were used for all the fuel lines. Agree, the very small ones are hard to find.

 

On 10/5/2022 at 9:41 PM, jfa.series1 said:

And yes... twin wire hose clamps were used for all the fuel lines. Agree, the very small ones are hard to find

I got some new twin hose clamps for fuel lines from Yahoo Japan, a pack of 10 I think, last year, let me see if I can find a link...

These the ones?

https://www.jauce.com/auction/x1060665150

 

47 minutes ago, RIP260Z said:

These the ones?

https://www.jauce.com/auction/x1060665150

 

Is this an auction that people outside Japan can use, or does it require an agent?

Steve,

That auction was a Yahoo auction brokered by Jauce - Nichido Logistics which is an agent for international shipping.  They charge a fee, of course.  My latest purchase through them was for a $11.24 item that cost me a total of $48.93 to get it.  DSL is usually the shipper and other than the cost, I found the service real good.  Jauce sends e-mails periodically to announce local delivery, packaging and shipping with a tracking number.  It works but it is expensive.

SteveJ, I agree with 26th-Z, been shipping parts from Japan by using proxy bidding companies for years. By far not a cheap option for those hard/NLA parts you want, but if you want, got to pay. Finding parts in Japan that other parts of the world didn't get, either NOS, or parts offered by loads of aftermarket sellers, again old stock, is totally worth it.