Is premature #3 piston failure "normal"? - Page 2 - Miata Turbo Forum -Boost cars, acquire cats.

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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 01-09-2014, 02:11 PM   #21
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Originally Posted by Savington View Post
IIRC, cyl3 is indeed the one that runs hottest once you reroute the car. It's not significant, but it's enough (apparently).

I've only ever destroyed one motor due to detonation damage (likely caused by high IATs), and interestingly enough, it also occurred on cylinder #3. Same thing as you - light damage to all the pistons, heavy damage to one. That's anecdotal to the hilt, but still interesting.
Ooh, this is a good data point to have. Thanks.
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Old 01-09-2014, 02:20 PM   #22
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Originally Posted by eyesoreracing View Post
Are 1.6 ECUs supposed to be batch? When we tested it by spinning the cam angle sensor, it fired sequentially. Does it go batch above a certain rpm?
Originally Posted by Oscar View Post
Didn't cali cars have sequential fuel?

California cars had fully sequential (four-channel) injection in 1993 only. All other '90-'93 Miatas in the US had banked (two-channel) injection, where 1/3 and 2/4 are paired together within the INJ harness.

Doesn't really matter, though. Even if this were a '94+ chassis I'd still say it's a mechanical problem rather than an electrical one. If you had an intermittent electrical connection that was causing one cylinder to occasionally misfire, you'd know about it.
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Old 01-09-2014, 05:49 PM   #23
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Originally Posted by Leafy View Post
And it turned into some weird furry thing.
Ya don't shave one day, and everyone notices.
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