itsadatsun240z Posted April 26, 2009 Share Posted April 26, 2009 I've scoured the forums and used the "search" button for more than one weekend on here and I still am unable to find the answer I'm looking for. I'm considering swapping an RB into a 1976 280Z 2-seater My question is do the RB20DET/RB25DET/RB26DETT share the same motor mounts? The reason I ask is I know McKinney sells a swap kit for it but they list it as being for the RB25/26 and not the RB20DET. Budget in mind my thought was I could swap in an RB20DET for the time being and as more time/money allowed I could eventually sell it and swap in an RB25DET the budget part being not having to refab the mounts in the engine bay. I wasn't sure how interchangeable the motors were I know they're all inline six-cylinder RB motors and I'd "assume" they were the same mount points but I want to be sure. Thanks in advance and I'm sorry if my Jedi Search Button skills have failed me and this has already been asked before. Quote Link to comment Share on other sites More sharing options...
z-ya Posted April 26, 2009 Share Posted April 26, 2009 Yes, the mounts points on the RB20, 25, and 26 blocks are the same. Not sure about the RB30, but they probably are. Quote Link to comment Share on other sites More sharing options...
rswilliams Posted April 29, 2009 Share Posted April 29, 2009 honestly, have you looked at the prices lately. the rb25 seems to only cost maybe $500 more, it would make more sense to just do the rb25 first, you'll spend more swapping it out a second time. Seems on ebay, you can get an rb25det and trans shipped for about $2k. That's my plan in the near future. Quote Link to comment Share on other sites More sharing options...
Z24O Posted April 30, 2009 Share Posted April 30, 2009 Yes, the mounts points on the RB20, 25, and 26 blocks are the same. Not sure about the RB30, but they probably are. ^^^^^^^^yep Quote Link to comment Share on other sites More sharing options...
jerryb Posted April 30, 2009 Share Posted April 30, 2009 Just go with the Rb25 unless money is an absolute deal breaker. IN this game whats a few extra hundred...the job will be done. Quote Link to comment Share on other sites More sharing options...
Cal Poly Zmanaustin Posted May 1, 2009 Share Posted May 1, 2009 My question is do the RB20DET/RB25DET/RB26DETT share the same motor mounts? Yes, the motor mounts are the same, but tranny mounts are different from RB20/25 Quote Link to comment Share on other sites More sharing options...
Careless Posted May 2, 2009 Share Posted May 2, 2009 Just go with the Rb25 unless money is an absolute deal breaker. IN this game whats a few extra hundred...the job will be done. agreed Quote Link to comment Share on other sites More sharing options...
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