Ok so I just purchased a 1990 FC 13b turbo engine, and it has about 150k miles on it. I was wondering what should I replace when rebuilding it? I have looked at a bunch of different things and it seems that it will cost around $6k at the most to rebuild it completely.
What I found in order to rebuild an engine was:

1 complete kit including all brand new gaskets, oil o rings, seals, springs, bearings and what not - $1300
2 Brand new rotors - $650 each
2 New rotor housings (front and rear) - $700 each
1 Front (side) housing - $400
1 Intermidiate housing - $450
1 Rear (side) housing - $400

Total - $5250 only for engine

This engine will be used in drift competitions. So pretty much my question is. Out of all the listed parts which do you think will be neccessary to be replaced in order to have the engine running strong for next few years?

 

You may not need to buy rotors or housings, it depends on the condition of the engine.

If you've never rebuilt the engine before, I would suggest looking online for a rotary engine rebuild writeup. It may be hosted on www.rotaryresurrection.com.

 

Unless this is a learning experience for you, for 5 grand. just buy a complete rebuilt engine and skip the do-it yourself rebuild.

you also have other option of a professionally rebuilt block, like porting to name a few.

I've rebuilt 2 N/A rotary engines and turned just about every bolt that there ever was on an 2nd rx. The first rebuild was a complete fail. It may be better to get a rebuilt block. Else, looks like you want to get your own hands dirty.

 

Wow.
Unless an apex seal got mutilated, all you will need is a rebuild kit. I've always assembled my own (and many others) from 2 - 3 different sources and it usually costs me anywhere between $400 - $800 in parts.
I suggest that you get your block rebuilt at Rotary Resurrection.

 

Yea, I see what you mean. I found a shop that builds rotary engines for $3400. One thing is though, I do not have an ECU or Wiring harness for the engine. Basically what I have is an empty shell.

 

Great time to go standalone ECU then!

 

Empty shell?

Excellent. Well skip the do-it yourself rebuild for the cash you seem willing to spend.

Get an awesome block packaged and ready to fit for your needs. Perhaps you should call mazda trix and discuss your options, and purpose for this car.

When it comes to the ECU and wiring harness on bare bones, you should definitely do your research. Atkins rotary can help you too. They put these power plants into air planes, where failure electrical or otherwise is not an option....so as far as making this work at bare bones, talk to them.

 

Ok so what is going with a standalone ecu a good option and if so, which one is a good one.

 

That is something that research can help you with.

We have a large ECU section on this forum.