2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

JSpec mountings vs USSpec

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Old 12-26-01 | 10:41 PM
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JSpec mountings vs USSpec

Hey guys, anyone whos done swap to jspec 13bt,

On some web I saw that US and Jspec have different type of mountings. Jspecs is taller and seems to be biffer. I already dropped my engine in, do I need to change my US mounting to Jspec? ***** I don't remember now if my Jspec already had it's "legs" on or I bolted them on...was quite a while back then
Old 12-26-01 | 10:45 PM
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i always thought you just swapped over your us spec mounts. but i guess since it fits you did that. i do remember to reading they are different
Old 12-26-01 | 10:46 PM
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I used my old ones from my US motor and they worked fine on the J-Spec motor.
Old 12-26-01 | 10:50 PM
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the 13bt is a dirrect swap (mount wise). but the 13b re or cosmo (2 and 3 rotor) are not.

Last edited by Scott 89t2; 12-26-01 at 10:53 PM.
Old 12-26-01 | 11:04 PM
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http://k2rd.freeservers.com/cgi-bin/...emountcomp.jpg
Old 12-26-01 | 11:12 PM
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Interesting. Are you sure there isn't a series different between them? Just a thought. Mine were the same. Wow that's weird! Typical for Mazda huh? heh
Old 12-27-01 | 12:24 AM
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i think its becuase they put the 13bt into the 929 as well as the rx-7's
http://www.dmrh.com.au/index3.htm hc luce

mike
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