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Just Replaced Heater Core


vrkt33
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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.post-37707-0-08420800-1339763738_thumb.jpg

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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.

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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

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