S4 NA 13b engine / Miata gear swapped trans

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Drivetrain

Jan 2, 2023, 09:53 PM | Replies: 6 | Views: 2044
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
  • Drivetrain - S4 NA 13b engine / Miata gear swapped trans - Used - 1986 to 1991 Mazda RX-7 - Oxford, MI 48371, United States
    Expired
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  • Price
    $123
  • Location Oxford, MI, 48371, USA
  • Condition Used
  • Compatibility
Make Model Year
Mazda RX-7 1986 - 1991
Description:

I have a S4 NA 13b and NA trans with a miata gear swap I'd like out of my garage. I did a turbo swap and no longer need these things. Both are local pickup only and are located in Oxford, Michigan. 

Engine - As stated this is an 88 s4 NA engine. Engine had about 175k miles on it when it was pulled and still ran when I pulled it. Engine is 99% complete, only reason I say 99% is i can't remember if i took something during my swap that i needed. If i did take something, it's something small. It's pretty much completely stock except for a dual sheave pulley (air pump was removed) and exedy stage 1 clutch. 

Engine does run, but I REALLY recommend this be considered a rebuild candidate. It leaked and ate oil pretty heavily. The last 5 years of its service was it being pretty much a track only engine and the poor thing is tired. 

Looking for $800 obo

Transmission- This is a NA miata gear swapped transmission that I put together myself, but the input shaft was modified by mazdatrix. Im not sure if it's an s4 or s5 case but it shouldn't matter. Unknown miles on the internals. I probably only put 2 events and less then 100 miles on the trans before I turbo swapped, but I don't recall there being any synchro grinding. 

Looking for 600 obo

Old Jan 7, 2023 | 03:27 PM
  #2  
tetsu50's Avatar
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From: Oxford, MI
Price drop bump

Engine - 700 obo

Trans - 500 obo
Old Jan 11, 2023 | 08:53 AM
  #3  
doritoboy's Avatar
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From: Virginia
i know this is first come first serve, but im looking to do a rebuild on my NA fc, i think i could have the cash for this in like 2 weeks, but im not trying to have you hold it for me in case i have any emergencys come up, and just to clarify, the engine does run, and if so, how is compression, if you dont know thats all right
Old Jan 11, 2023 | 10:09 AM
  #4  
tetsu50's Avatar
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Yep engine ran fine last time it was running. Started just fine hot or cold. Held idle perfectly.

I don't know what kind of compression numbers it made but I'd guess they are on the lower side but consistent between each rotor face and between front and back rotor. Again that's just a guess based on how it ran last though.
Old Jan 23, 2023 | 07:09 AM
  #5  
tetsu50's Avatar
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From: Oxford, MI
Price drop bump

Engine: $650
Trans: $450
Old Apr 1, 2023 | 10:55 PM
  #6  
Themailman's Avatar
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From: Michigan
Hi

Is this still available
Originally Posted by tetsu50
Yep engine ran fine last time it was running. Started just fine hot or cold. Held idle perfectly.

I don't know what kind of compression numbers it made but I'd guess they are on the lower side but consistent between each rotor face and between front and back rotor. Again that's just a guess based on how it ran last though.
Old Apr 4, 2023 | 01:14 PM
  #7  
tetsu50's Avatar
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From: Oxford, MI
Apologies, forgot to update this thread. Engine has been sold.

Trans still available. $400 obo




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