Heater core recommendation needed + another HVAC issue - Page 4 - ZR-1 Net Registry Forums

Matt B · 08-29-2022

I'm nearly ready with putting everything back into place. What a job...
I spent about 2 full days with it, whereas plenty of time went into research as neither the shop manual nor the YouTube videos were very precise in giving instructions.

The only things that were painstaking or complex was to remove the heater hoses and removal and installation of the horizontal tube that is attached to the heater core rear cover. This thing is a nice example of what happens when engineers go to work after a long party night.

Summarizing I can say that the job isn't too complicated but requires patience and a bullet proof way to keep your overview.

Also, I can only recommend to pull the upper dash. It's extra work... But it quickly pays off the further you dig into the guts of your dash.
I can't imagine who the job can be done PROPERLY with the upper dash in place...

HAWAIIZR-1 · 08-29-2022

Matt B,

Thanks for taking the time to share your trials and tribulations of this ordeal. If it only affects heat I might just do a bypass. I don?t know if I have your patience. Congrats and well done.

Sent from my iPhone using ZR-1 Net Registry

08-29-2022	#31
Matt B Join Date: Jan 2021 Location: Beautiful Bavaria Posts: 519	Re: Heater core recommendation needed + another HVAC issue I'm nearly ready with putting everything back into place. What a job... I spent about 2 full days with it, whereas plenty of time went into research as neither the shop manual nor the YouTube videos were very precise in giving instructions. The only things that were painstaking or complex was to remove the heater hoses and removal and installation of the horizontal tube that is attached to the heater core rear cover. This thing is a nice example of what happens when engineers go to work after a long party night. Summarizing I can say that the job isn't too complicated but requires patience and a bullet proof way to keep your overview. Also, I can only recommend to pull the upper dash. It's extra work... But it quickly pays off the further you dig into the guts of your dash. I can't imagine who the job can be done PROPERLY with the upper dash in place... __________________ ZR-1 #638/1991

08-29-2022	#32
HAWAIIZR-1 Join Date: May 2010 Location: Japan Posts: 3,549	Re: Heater core recommendation needed + another HVAC issue Matt B, Thanks for taking the time to share your trials and tribulations of this ordeal. If it only affects heat I might just do a bypass. I don?t know if I have your patience. Congrats and well done. Sent from my iPhone using ZR-1 Net Registry __________________ Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048