Hey guys, is there an alternative/better replacement for the stock heater control valve for a 77 Z with factory A/C? After looking over this site and hybridz I found that a ford diesel or mack truck valve will work in a Z but the heater has to be cable operated. Mine uses vaccum like most other 77 and up Zs. The water leaks and soaked flooring routine is getting old. You can no longer order the vaccume heater valve through MSA, courtsynissan, or every dealer I called. Is there any alternative to this part?

I think the manual valve is still available. At least it was about two and a half years ago when I changed mine. 27190-N3100 was the number and it was only about 12 bucks. I don't know how that would work out with your cables, controls, etc. Mine is a 78 non-a/c car with an aftermarket a/c system so it still has the manual controls.

27190-N3100 no longer available.

Seems to me that Zman of washington has advertized that he can rebuild them. Give him a try.

http://www.zspecialties.com/

Since this thread (2 years old) I've had my old one apart and I'm pretty sure I could rebuild it.

This topic popped up on a search.So i thought i'd update it.My 810 valve is frozen......

This topic popped up on a search.So i thought i'd update it.My 810 valve is frozen......

You should still be able to get the one for an 810 believe it or not. 27116-Q0100. Try that number. It's been a while since I bought mine but there aren't that many 810s around so I'll bet they're still available.

Edited March 17, 200916 yr by sblake01

27190-N3100 no longer available.

This topic popped up on a search.So i thought i'd update it.My 810 valve is frozen......

Just bumping this to let you know that the heater valve for an S30 is different than the one for an 810.

Well, what a revoltin' developement....I get the valve off and it is fine.I mean really free moving .Put it back in and let's go-right?Oh,no-this can't be that easy.

The shaft that exits the heater box horizontally that attaches to the arm off the heater valve has a travel limit of less than a 1/4 inch.Something is jamming the door.So now the whole friggin box has to come out.(*^(&^%%*&!!!!!