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Is there a difference between the J79 and Spey engine versions used in the F4 Phantom in terms of alignment with the fuselage? It looks to me like the Spey nozzles are pointing downward.

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  • $\begingroup$ Are you asking if the engines are different from each other (eg J79 vs Spey) or if the engines are different from the design standard (eg J79 in the F-4 vs J79 in the F-104)? $\endgroup$
    – tedder42
    Mar 29, 2022 at 22:30
  • $\begingroup$ I'm asking if the engines are different from each other J79 vs Spey. $\endgroup$
    – George Geo
    Mar 30, 2022 at 6:42
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    $\begingroup$ Oh, childhood memories! I used to build scale models as a kid, and always wondered about the weird alignment of the Phantom's nozzles. Not sure which version I had built then though. $\endgroup$
    – Jpe61
    Mar 30, 2022 at 15:48

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