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Coolant Line ID Help


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#1 gravityflyer

gravityflyer
  • LocationSyracuse

Posted 07 June 2015 - 05:29 PM

Hi all,

 

I hope this is the right subthread for my question. I've been referencing this diagram pulled from another thread, but I still need some help identifying the following items...

 

75-78_EFI_Cooling

 

 

(1) What does this outlet connect to from water outlet housing? I'm assuming it connects to the intake manifold, but since I removed the original manifold and installed the AZC manifold what should I now do with this outlet? Do I plug it?

IMG 8215
 
(2) What does this outlet connect to from water inlet? If it's the "external bypass" that connects to the outlet housing, I assume there should be a place on the outlet housing to which it should actually connected (I can't remember if there is a place for it)? If it does indeed connect to outlet housing, what connector should I use?
IMG 8218

 

(3) I just bought a new radiator but it comes with two outlets at the bottom. What do these connect to?

Radiator

 

 

Thank you!

 


1977 280Z.
Check out my Build Thread.

#2 ritrebor

ritrebor
  • LocationLos Angeles, CA

Posted 07 June 2015 - 06:40 PM

Believe #2 goes to the heater hose.

#3 is for a automatic transmission cooler.



#3 gravityflyer

gravityflyer
  • LocationSyracuse

Posted 07 June 2015 - 07:06 PM

Thanks ritrebor!

 

- #2, the larger inlet to left of circle receives the heater hose from the firewall. I'm just not sure about the smaller connector circled in red which I assume is the "external bypass" in diagram?

- #3, sounds like I'll just leave the rubber caps on that came with the radiator since I have manual tranny.  :icon14:

 

Thanks again!


1977 280Z.
Check out my Build Thread.

#4 SRRTz

SRRTz
  • LocationNederland, TX

Posted 07 June 2015 - 07:40 PM

When I was still running that intake I just plugged the fitting in the thermostat housing and found a straight fitting for the where the heater hose connects.

1977 280z Turbo: N42/P90a - both rebuilt to stock specs, t3/t04B hybrid turbo, shaved early EGR intake, TiAL BOV and wastegate, Mishimoto intercooler, 2.5" mandrel bent downpipe to 3" mandrel bent exhaust, currently running 10psi boost. Fuel and wasted spark ignition controlled by a MS1 v3.0 board. Power goes to the ground through an 83 NA 280zx trans, stock 3.54 R200 (LSD coming soon) and turbo snowflakes wrapped in 205/55 R15 Dunlop tires. 


#5 gravityflyer

gravityflyer
  • LocationSyracuse

Posted 07 June 2015 - 08:19 PM

When I was still running that intake I just plugged the fitting in the thermostat housing and found a straight fitting for the where the heater hose connects.

 

Thanks SRRTz!

 

So plug #1 and substitute a straight fitting for #2? If so, that's what I planned on doing but NPT threading (1/4" for #1 and 1/2" for #2) doesn't quite work. In other words, I'm only able to turn each maybe one or two rotations before the threading stops it from going in any further. On the other hand, maybe one or two rotations is sufficient if I use some Teflon tape on the treads?


1977 280Z.
Check out my Build Thread.

#6 SRRTz

SRRTz
  • LocationNederland, TX

Posted 07 June 2015 - 08:43 PM

Those are the sizes I used. I don't think mine got more than about three turns in but coupled with some Loctite PST they sealed up fine.

1977 280z Turbo: N42/P90a - both rebuilt to stock specs, t3/t04B hybrid turbo, shaved early EGR intake, TiAL BOV and wastegate, Mishimoto intercooler, 2.5" mandrel bent downpipe to 3" mandrel bent exhaust, currently running 10psi boost. Fuel and wasted spark ignition controlled by a MS1 v3.0 board. Power goes to the ground through an 83 NA 280zx trans, stock 3.54 R200 (LSD coming soon) and turbo snowflakes wrapped in 205/55 R15 Dunlop tires. 


#7 gravityflyer

gravityflyer
  • LocationSyracuse

Posted 08 June 2015 - 06:56 AM

Those are the sizes I used. I don't think mine got more than about three turns in but coupled with some Loctite PST they sealed up fine.

 

Sounds good! I'll give it a try this week!


1977 280Z.
Check out my Build Thread.




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