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1980 Renesis Swap

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Old Nov 5, 2025 | 02:00 PM
  #76  
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My 1980 Mazda RX-7 is officially an international project.

Originally built in Japan, purchased new in Canada, 13B Renesis built by Chips Motorsports USA, and now some custom parts from Pulse Performance Race Engineering NZ.

Any guesses what's in the mystery bubblewrap?



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Old Nov 6, 2025 | 11:40 AM
  #77  
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From: https://www2.mazda.com/en/100th/
Originally Posted by RX7_Renesis
Any guesses what's in the mystery bubblewrap?
a new hat!
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Old Nov 6, 2025 | 11:44 AM
  #78  
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Originally Posted by RX7_Renesis
Any guesses what's in the mystery bubblewrap?
New ECU to run the RX-8!
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Old Nov 6, 2025 | 01:49 PM
  #79  
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• New upper intake manifold to help reposition the throttle body slightly lower.
• New side mount alternator bracket and hardware to accommodate the unique combination of the 13B Renesis block and GSL-SE front cover.
• New crank angle sensor and miscellaneous hardware.


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Old Nov 6, 2025 | 03:07 PM
  #80  
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Nice work.

Why not use a bigger or better alternator? I mean the world is your oyster at this point and you can put anything you want in there.
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Old Nov 7, 2025 | 06:14 PM
  #81  
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Nice custom work. Replying to sub.

Have you considered an idler pulley to redirect the belt where you want it? (Could go up and over?) I’m looking at doing something to run ac on a Franklin engineering multirib pulley that’s only meant for main and alternator pulleys.
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Old Nov 9, 2025 | 09:22 AM
  #82  
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Qingdao: I am using the stock 100A to 110A, 12V RX8 alternator for now. I can upgrade later if needed.

swbtm: I considered an idler pulley, however Gareth from Pulse Performance recommended relocating the crank angle sensor similar to their 3-rotor engine.



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