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What engine is this? Rebuilt?

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Old Apr 16, 2021 | 10:23 AM
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What engine is this? Rebuilt?

I am trying to help my buddy figure our what this engine is that he recently picked up form a guy that apparently didn't know much about it either. Looks like a fresh rebuild and possible performance upgrades. Any help would be greatly appreciated!




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Old Apr 16, 2021 | 10:53 AM
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From: https://www2.mazda.com/en/100th/
S4 NA Irons with an S4 T2 front cover. if the rotor housings don't have the knock sensor bung/threads they probably are the S4 NA housings. its been tapped for turbo oil.
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Old Apr 16, 2021 | 11:50 AM
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Originally Posted by j9fd3s
S4 NA Irons with an S4 T2 front cover. if the rotor housings don't have the knock sensor bung/threads they probably are the S4 NA housings. its been tapped for turbo oil.
Thanks for the direction. Judging from this thread https://www.rx7club.com/2nd-generati...-s4-t2-816116/ It matches up with the S4 Turbo
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Old Apr 16, 2021 | 11:53 AM
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I believe Hayes up in Washington used to do their rebuilds/irons in red. I've got parts from an engine they built that were the same shade though they're from 10+ years ago.
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Old Apr 19, 2021 | 09:54 AM
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Originally Posted by dguy
I believe Hayes up in Washington used to do their rebuilds/irons in red. I've got parts from an engine they built that were the same shade though they're from 10+ years ago.

I appreciate the info. This is definitely a fresh rebuild so I am still searching.
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