hi folks i am a new owner of a 1979 280zx the heater lines have been cut and pluged and as i suspected the heater core leaks . my question is this there is a brass tee on one line that has like a t stat in it there is no hose comming off it and i have no idea where it would lead to any help would be appreciated as to what this is and where the heater hoses go to thanks

 

Welcome to ZDriver!

You mean this?

http://www.thezstore.com/page/TZS/PROD/16-7648



There are two heater hoses going through the firewall that connect to the back of the cylinder head & water pump outlet.

First step is to buy the Haynes manual or download the FSM for free at www.xenons130.com/reference

 

there are two hoses from fire wall one has a 90 degree turning down to the plug put into the block the other hose runs along the engine to the water pump that it the hose that has the tee the tee is actualy upside down so the hose has a straight shot from the water pump the tee points stright up with the t stat or dump valve but no hose was atached to it

 

Sorry bro... I think you need to use a few periods (.) in your sentences so I can understand you.

Can you post a pic of what you are talking about?

 

i took the tee out here are the pics. i think i have std. ac i see at the z store the the control for me is not avalible i wish i could see a pic of mine it looks like a hose ataches to the top of the control valve

 

Here ya go... From the FSM you can download from the link I posted.

 

looking at this picture. the tee mecinsim looks like it sits in the middle. it also looks like it ties back in where it goes into the block. right now there is just a plug in the block i will need to find that y that mounts into the block any ideas

 

I have a spare somewhere... might take a few days to find.

Have you checked your local junk yards to see if there are any 280zx's?

 

are you refering to the "T" that's been circled?

 

yes the tee ibelive is circled in reality its a littel closer to the left. as far a junk yards we have a couple i hope they are open tomarrow. i just got the car saturday. i will let you know if i cant find one here locally. thank you soooo much for all your help

 

If not I'm sure i have a couple of those laying around too ^_^, k?

 

......... lmao

 

went to the junk yard today got a lot of stuff, including heater core, what a job to get that out, there has to be an eaiser way. got the heater part off the block got tail light. headlight boot, seat belt and a bunch of other goodies. what king of presure should i test the heater core up to? also which is easier the pull the dash and cross bar or ac unit and fan?

 

The radiator caps are rated at 12-15psi... no need to go above that.

Pull the dash and cross bar. It's easier than contorting your arms and working upside down. And we even have several "dash pulling" write ups.

 

The first dash pull is a little daunting but it's really not that bad. After that you're a pro and you could probably pull the whole dash out in half an hour...

 

well put in new pressure tested heater core. i guess the,heater core was ok. i think its the controll valve. i have ac and the z store dosent have one for th e79zx with ac any suggestions

 

Didn't you get the control valve when you went to the junk yard?

You can also buy it from Nissan.

 

it was alrady gone. what year uses the same valve, there is an 80 next to the 79 i pulled the heater core out of

 

Man I can't believe you guys have Z cars in the wreakers still.... nice

 

stupid question how ca n i tell if my water **** has auto air conrtol. my car has ac and i need to find a new heater control ****

 

The auto climate control water valve is vacuum controlled. The manual a/c is not:

http://www.thezstore.com/page/TZS/PROD/16-7645

http://www.thezstore.com/page/TZS/PROD/16-7648

 

thanks sooo much