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Originally Posted by Casanova
The number one rust spot for mk1 MX-5s is the back of the sills and the rear arch. Have a very thorough poke around that area.
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The rear quarters have been resprayed already. I'm not sure why, but I'm assuming it was for rust in the wheel arches, and am not sure how extensive it was. The common problem area where the wheel arch meets the rocker looks solid though.
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Originally Posted by AntiochOG
I'm of the opinion that if it hasn't failed after 25 years, it's probably not going to anytime soon. But mine is due for a timing belt, so I guess I'll find out soon.
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I've had several owners say the same thing. If it hasn't self-destructed yet, it's likely OK. I'll be doing the belt also.
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I've always wanted to do a six speed swap, and swap out for a taller rear end. That way 1-5 would be like they are now, but with a big 6th gear. But, it's hard to justify the cost of doing that.
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There are multiple rear end options. I'd seriously consider the rear end meant for the V8 swap, but I'm not going to spend big money to get it. More likely is a trade with someone with a later, more powerful car who wants shorter gearing.
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PS/AC delete has been my best MPG mod.
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Thank you! That's great info, and extra encouraging because those mods are easy to do.
Next summer I just want to get a baseline of speed vs. MPG
un-modded before I start messing around with it.
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I bet 165s are a ton of fun on the Miata. Driving at the edge of traction is so much fun in these cars.
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Ha! You just reminded me of the video Chris Harris did where he put 125 mm width space savers on a 480 horsepower Merc C63 AMG coupe and then proceeded to take it around a damp race track!
He LOVED it, giggling all around the track:
"This is marvellous! Might be the best handling car I've driven in ages! Just a joy!"
Conclusion:
"Narrower tires = fun. On the street, fun is better than speed."