03 March 2010

Header install tip

If you have changed the headers on an NC or are planning on doing so here is a little tip that will save you 30mins and a pocketful of change from going in the cuss can.

The heat shield on the NC MX-5 is a real pain to remove and install. there are fastening points, one nut on the firewall (easy) and 2 bolts running longitudinally on the car. Them middle bolt isn't so bad, but the front one is a bastard as it is right above the alternator.

Here is my tip, slot the bolts with a Dremel or similar and just unscrew them from the top. Once you have the shield out, notch the mounting holes so that you can partially install the bolts then slide the shield in or out without having to remove the bolts totally in the future. Once the shield is in place just screw the bolts tight from the top, then snug them from the underside.
From blown engine


From blown engine


From blown engine

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