Just Replaced Heater Core

[vrkt33]

This is probably a stupid or easy question, i just replaced the heater core well the whole unit in which the heater core is in on my car ( R33 GTR ) on the new unit i can not connected the two metal lines i belive they are the air con lines, i have connected the smaller one on with no worries but the bigger one i cant seem to get on due to the thread being worn, im not 100% what line does what so i just want to know if i can drive with it disconnected and still use the heater in the car and what is the line 100% as im not sure.

[GTRsean]

Both are a/c lines. Connect or seal them if you intend to keep the aircon.

Heater will work fine without them.

[vrkt33]

thanks for the reply GTRsean im going to have to just seal it up with some strong tape atm till i can get around to fixing the thread on it.

[GTRsean]

How bad is the thread...

You might need to 'bend' the pipe a little so that the nut and threads line up parallel, and if it's not too bad you may be able to dress up the thread with a small file, then lube it with some anti seize.

Good luck.

[t_revz]

Big line will have up to 120 psi so will need to be done up well. If the hose end is damaged I would try get a hose from here that someone has pulled out of their car of get one made up. Depends how bad it's damaged. Maybe clean it up with a thread file.

I would get the place who gasses it up to pressure test with nitrogen if your not sure about your repair. Either way it's not vital to running

[krzysztof]

i'd say the thread is fine, if you believe it will go on then it probably will

good luck

[Al Despo]

Bitch to do in anycase but heater will still work if they are disconnected and sealed