I have a '46 CJ-2A that I am trying to making run again.  It dosen't have a motor in it, but the previous owner was running an I-6 Mustang engine.  I have looked everywehre around my home town for a(n) 134 L or a 225 V-6 to put in my engine bay in the hopes of trying to keep it semi stock, but have searched in vain.  My friend has a Mazda 13B-REW rotary engine that he is willing to "donate" to my build up.  I was wondering if anyone out there has ever heard of someone putting this motor in an old Jeep, and whether or not it will work.  Any help would be greatly appreciated.  Just as a side note, if I get the motor to work and can find an adapter, I am planning on switching from the T-90 that's in it to a T-98.  Thanks.  

The mazda rotary is a great little engine and would be cool to stuff in a jeep.  You could run the mazda tranny and a divorced xfer case to eliminate conversion adapters. You'd have to be careful with lenght though, while you may get the engine far enough forward to actually put a driveshaft in the rear, you may have other location issues with the mazda tranny.   Unless your a machininst I don't think you'll find an adapter to make the 13B fit anything American. You'll also have to make your own motor/tranny mounts.  It could be a very expensive and painful undertaking.  But hey I'm all about cool strange things in jeeps.

i'm no expert but i think the rotary engines don't make any power or torque in the low rpm range.  you can rev them to 12,000 but where can you turn that kind of rpm when you're 'wheeling. call these guys

http://www.pineappleracing.com/ProdSvcs.html

i'm sure they can help you out. good luck

I just saw a CJ2A on ebay that had a 283 chevy transplanted.  The original engine was available.  Buy 'em both, have two Jeeps.  THAT woud be cool.  

I have a 46 2A with a 4.3 Chevy. Love it, great little motor. The Vortec vertions have a ton of  torque & ponies. If ya don't want to mess with the computer go with a 1986(one peace rearmain seal) the 85 & earlier are internaly balanced & a odd fire.

I used a Norvac addapter ($240) to mate it to a T-150(this tranny has the same butterfly shaped front as any standerd Ford tranny). This may be a option if you want to reuse the tranny & t case setup you already have.

Novac has a huge knowage base.

http://www.novak-adapt.com/index.htm  

The rotary would be an excellent four wheeling motor. While they can scream to 12K the 13B is redlined at 8500. According to the formulations of it's inventor Felix Wankel a rotary makes 80% of it's torque by 2500rpm.  A normally aspirated 13B is rated at 138ft-lbs at 3500 RPM., depending on what spec sheet you read.  The 13B with a turbo is rated at 196Ft-lbs @ 3500RPM. Man that sounds just about right for wheeling.  Rotarys are also smoother since there are no harmonics to contend with.  There are no verticle to rotational translations either. There are also less moving parts and a dry sump allows you to flip it without loosing oil pressure, thats why they use them in airplanes.