I'm wanting to know if there is any site that shows step by step on how to rebuild a 13b engine. I'm planning on getting a 84 or 85 gsl-se and I want to rebuild the engine, tranny, and differential. I have never rebuilt an engine but I know a lot about how the work and what goes where.

 

Atkins rotary sells a video that shows you step by step how to rebuild your rotary engine. Its ment for 86 and newer engines, but the 84-85 GSL-SE only have a few minor differences that you'll quickly notice and wont take any extra effort at all to overcome.

 

You can always buy a Hayne's book, too.

 

or a Mazda FSM

 

A few years ago, I decided I would rebuild my 12a. I knew from the talk around the campfire that rotary engines only has 3 major moving parts. So, I figured it would be simple as 1,2,3.

Then I started ordering the rebuild parts from Mazda. By the time I decided instead to get a reman, I had purchased hundreds of tiny parts (mostly springs and seals, and other tiny internals).

Also, recently, I checked the area for a machine shop that had experience with truing rotary plates. I could find none.

I wouldn't attempt a rebuild myself because I know that I have "stone fingers" and that these small parts would do me in. It also doesn't help that I would need a "clean room" where I can do the rebuild and that I would think you have to be very acurate.

 

Nah, it's not nearly as hard as you think. I rebuilt mine in my dirty *** garage. There's no need to "true" the plates. Any machine shop would be able to check the flatness of the plate. If it's out of tolerance get some lapping compound. Put it on one plate, set another plate on top of it and rub them togheter, that'll make 'em flat again. All those little springs and gaskets easily stay in there place with a bit of vaseline.

I've found it's a lot easier to rebuild these without an engine stand. I used 2 wheels(no tires) to rebuild the last one. Set the frontmost plate on the wheels, build the basic block there. Now put the engine onto an engine hoist to put on the front cover, oil pan, and all the other external parts.

 

Maybe so.

How long do your rebuilds last?

 

Don't know, right now I've got 2k miles at 10-17psi of boost. All internals are stock except for I'm using rotaryshack apex seals and hayes inner coolant seals.

Trust me, I know how precise and clean these things need to be. I work at a machine shop running CNC lathes and mills. The parts I make every day are more precise and need to be cleaner than anything in my engine. That might be why I don't find it hard at all to work on this motor.

Edit: When you take apart your motor is when I would check each part to make sure it's within tolerance. That way you know what you need to order before you start putting it back together. The actual assembly of the motor is very easy and the only thing to worry about is keeping it clean, there's not anything "precise" in the assembly.

 

hellz yea. i'll be doing this soon myself! hard or not. dont matta to me. WOOHOOO! i'm just letting someone cooler than me do my porting. WOO!

 

anyone know of a web site with pics showing excessive were on parts from blown engines?

 

noob

 

MAZDTRIX

 

They aren't that hard to rebuild and it's great fun to boot.