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WTB: FC3 Front Pulley Mounting Hub

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Jan 20, 2024, 04:07 PM | Replies: 6 | Views: 627
  • Miscellaneous - WTB: FC3 Front Pulley Mounting Hub - Used - 1986 to 1991 Mazda RX-7 - Gophermound, TX 75039, United States
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  • Price
    Any Price
  • Location Gophermound, TX, 75039, USA
  • Condition Used
  • Compatibility
Make Model Year
Mazda RX-7 1986 - 1991
Description:

Looking for a front pulley mounting hub from an FC 13B engine.  I don’t need the pulleys or anything else, just the keyed hub that is at the very front of the e-shaft that the pulleys bolt to.   My understanding is it’s the same part for all FC engine models, but please correct my error if mistaken. 
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Old Jan 20, 2024 | 09:19 PM
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aicrotary2
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I should have . Will check tomorrow. It is from a t2
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Old Jan 21, 2024 | 02:35 AM
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TeamRX8
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From: on the rev limiter
The e-shaft keyway should be directly in line with one of the pulley bolt holes.

I’m fairly certain that this is true for all of the 13B engines, including the Renesis.


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The REW and Renesis hubs have trigger wheel positioning pins.

The 12A hub has the keyway positioned equally at 45° between the pulley bolt holes.


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The 20B hub has the keyway positioned ~25° CW from one of the pulley bolt holes.


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Last edited by TeamRX8; Jan 21, 2024 at 02:39 AM.
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Old Jan 21, 2024 | 02:46 AM
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pzr2
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A while ago, I made a CAD model of the FC hub. Looks like that's how I had it modeled.


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Old Jan 21, 2024 | 08:35 AM
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TeamRX8
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From: on the rev limiter
^^thank you

Curious to know what dimension you used for the OD of the pulley centering extension lip?
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Old Jan 21, 2024 | 04:33 PM
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Nominal of 49mm, actual measured was slightly less so the pulleys/sandwich plate was a slip fit



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Old Jan 22, 2024 | 02:41 PM
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aicrotary2
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From: miami fl

Should be a s4 na $20 plus shipping
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