Mk1 radiator replacing

Author
Discussion

tonymor

Original Poster:

1,494 posts

179 months

Tuesday 17th September 2019
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My radiator is leaking badly so am awaiting the delivery of a new one .
Hopefully going to fit it myself.
Anyone done this and can give a guidance to the procedure?

MX-5 Lazza

7,954 posts

226 months

Wednesday 18th September 2019
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I changed one many many years ago. I can't remember the details but it was an easy DIY job with simple tools.
One piece of advice though, there is a radiator drain point in the middle/centre of the rad but don't use it. It's a plastic plug and easy to break. Better to just remove the bottom hose to drain.

Baskey

176 posts

153 months

Saturday 21st September 2019
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I replaced mine last year. I’m a modest DIY’er at best and I had it changed within a couple of hours allowing for tea break and bleeding of the coolant system

No specific advice as such as it was fairly straightforward. Good luck

FindingMenno

40 posts

194 months

Friday 27th September 2019
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Easy job even for a DIY novice. Did it about 3-4 times when I needed to patch on old one up awaiting arrival of a new one. (parts could be hard to get in the caribbean I was at the time.) Needed about an hour.

As I recall:

  • drain radiator (using the drain plug, it is soft plastic but I assume you're getting a new one anyways.
  • remove air hose at front of engine (between air box and throttle body).
  • Undo top hose.
  • Undo bottom hose (there is a little access panel, often easier to just undo and drop undertray)
  • Unplug fan connectors.
  • undo two bolts at each side of top of radiator.
  • Depending on model there might also be some hoses attached to a bracket at the bottom of the radiator. If so undo bracket from radiator by removing bolt.
  • Lift radiator out.
  • Put side mounting rails from old radiator on new.
  • Put fans from old radiator on new.
Reinstall new radiator and refill.

anonymous-user

61 months

Friday 27th September 2019
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If you can get hold of an original Mazda one I would, the MX5parts one I fitted was really horrible cheap nasty quality (as most aftermarket parts are).

As others have said it's a really easy job.