Hey Guys I was wundering if anyone out there knows the wieght of a new rx rotary motor?

 

Short blocks are usually around 220lbs.

 

...

 

there about 200lbs

 

clarification here... just what is a rotary shortblock vs a longblock? If you literally mean just the housings and the rotors/seals/stat gear/eshaft bla bla bla then youre not taking into account the intake and exhaust manifolds among other things.

 

Short block is the engine itself minus the accessories

 

wow a person can bench the whole motor.
can someone briefly explain to me what the differences are between the long and short blocks? never heard before. and don't just tell me one is long and one is short.

 

Short block...just the rotors, e-shaft, rotor housings etc.

Long block includes turbos, manifolds, airpump and other attatched accessories.

 

That's wierd. For piston engines, a short block is minus the heads/pistons (ie, just the rods sticking out). The long block is up to the heads/valve covers. With everything attached it's called 'turn key'.

Technically, there should be no such thing as a rotary 'short' block. (It would be just the e-shaft?). The only thing you could get is rotary 'long' block (relative to piston terms).

And with everything on it (UIM, access etc) it would be 'turn key.'

 

Installed about 25-50 pounds less then a LS1 or around 425lbs.

 

Mazda numbers...

Renesis 303 lbs
REW 344 lbs

That would be longblock (most if not all accessories). I believe it includes turbos on REW but not IC or some of the piping. That would probably put it around 360 lbs. A LS1/LS7 longblock I think is in the 400-425 range, less with lighter internals. The REW can reduce weight by about 25 lbs with a light flywheel, pulleys, and emmissions removal.

 

are you sure i always thought the short block was the block w full rotoating *** inc. pistons. long block being heads up. not trying to fight just curious.

 

Just taken my FD engine out, and without the down pipe and liquids it weighed 395 pounds with all accessories.

 

Thanks for the info, rhdv8! It's nice to see old threads bumped for a good reason.

-s-