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R34 Heater core replacement

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Hey guys.

I recently bought a R34 GTT. It didn’t have a working aircon or heater. The aircon had lost all its gas and the heater was bypassed, I’m assuming because the Heater Core was leaking. 

I just got a heap of the o rings in the aircon replaced and the system re-gassed and it’s now nice and cold. 

Pretty keen to get the heater working too. The guy as the shop doesn’t wanna touch the heating side of it cos apparently it’s to big a job and reckons it’s gonna cost me a fortune in parts and labour. $500 part from Nissan for the heater core and heaps of labour hours taking the whole dash out and back in. Hadn’t done one before either.

Has anyone got any experience in replacing the Heater Core on a R34?

If anyone has a guide to doing this on a R34 I might give it a go. I saw a threat about not having to take the dash out on a R33. Is that the case on the R34 also?

Or if anyone has a recommendation on a shop that specialises in Skylines that would be great?!


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If you can have the car off the road and have space to work on it, taking the dash out is not such a big deal. Just take it slowly, label what you disconnect and it is pretty straightforward.  

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