PCV Hose Question

[w3wilkes]

http://www.thezstore.com/page/TZS/PROD/classic16d/15-6211

Is listed for 71 - 72 cars. The same part for 70 cars is no longer available. My car is titled & registered as a 71, but was built 12/70. The parts appear to be the same, what's the difference and what serial # car would the 71 - 72 part start at?

[siteunseen]

It may be the PCV valve location.  On my '72 it's in the center of the balance tube between the carbs.  Zcardepot list the same hose from '70 through '74?

https://zcardepot.com/crankcase-pcv-vent-hose-oem-70-74.html

[w3wilkes]

The PCV valve on my car is also in the center of the balance tube.

Interesting that ZCarDepot lists 1 hose for 70 - 74, but MSA lists a hose separate for 70 that's NLA and then a hose for 71 - 72 that is available and NLA for 73 - 74. Maybe ZCarDepot's hose fits more cars because they charge twice as much for the hose than MSA! 

[siteunseen]

Try "240zrubberparts.com" or something like that. The guy is a member on here, super nice too. He reproduces NLA parts.

[CanTechZ]

The Nissan parts book shows four part numbers for the PCV hose (item 3) from 1970 to 1973. I'm not sure what the differences are but the first P/N shows for up to 12'70 and the part number starting 1'71 not being backwards compatible. Also here is a picture of my  7'70 car showing the early hose.

HTH

Mike

 

Edited September 4, 2017 by CanTechZ

[w3wilkes]

Thanks, looks just like my 12/70 car. My Clymer manual shows the PCV valve position to be the same from 70 -72, but says the 73-74 is different, but similar. Still curious as to the difference introduced with I'm guessing car HLS30-21001 from earlier cars? Since I consider hoses as "consumables" I'd like a spare. This hose is a different size at the block than it is at the PCV valve, at least on my 17,486 car.

[w3wilkes]

Just a comment on the picture you posted of your car... I didn't know that Canada got Euro style non-emission cars back in the early days. That balance tube looks to be the Euro style tube available from ZTherapy and there are some differences I see in the carb linkage from my 12/70 USA car due to the non-emission, cool!