Could RX8 it fit RX7 engine? I think u really mod/ abuse the RX8 engine kaw kaw to kill it.

back when first got the car , noticed that the engine temp would rise during traffic jams .s.  had read that engine would tend to heat up in traffic conditions or hard driving so left it ..then after cny last year , driving to KL from PG , just before ipoh , there`s a section of the higway which goes up slope before the tunnel ... got caught in a massive jam , the engine temp had risen to maximum ( i know my mistake , should have pulled over and let it cooled down ) , reached the tunnel evrything cleared up and went back to normal ...  reach KL already , suddenly the car stalled, but after a while it started back up , the quickly drove back home ...few days later noticed the temp still rising ...so masuk workshop (st wangan ) dianosed driver side cooling fan motor kong ... but i think by then the engine was damaged bdly ... lol 

I suggest you overhaul the rotary engine at SC, safer and less likely you'll get conned. Rotary engine lifespan is 7 years, at least guaranteed could serve you well for another 7 years. If you sent to outside workshop, they'll charge you highly markup cut throat price for the parts and you don't know whether they really buy the parts or just re-fit the old part back to con you.

Price of overhauling Japanese engine at SC for totally blown engine:
- Inline4 engine around RM4k+ and never close to RM5k
- V6 engine range from RM5k-6k

Conman Ah Beng workshop could charge you RM6k for inline4 and RM8k-10k for V6. Also, many Ah Chong Ah Beng workshop are run by unqualified self claim foreman that don't even know what is Automotive Engineering course. Not even the minimum MLVK no CNG certificate with on job training.

Recond engine is nothing more than dead engine that they just fix to level where it can move but will give you headache shortly. Those old engines could be taken from cars that got total loss in Japan and given to you. Also, they don't even know how to calculate pressure, the air intake and exhaust manifold to muffler are nothing more than just sendiri tarik style that end up choking your engine. Either not enough pressure into engine or too much pressure into engine but exhaust pressure too low to pump out the exhaust causing carbon buildup and engine suffocate to die early.

Mind you, carmakers don't make straight air intake and exhaust with reason, curvy bengkang-bengkok tubes are there to generate enough pressure before pumping into engine and also creating pressure for exhaust gas to be pumped out of engine out through muffler pipe.

Don't pandai2 go change engine. That old SR20 engine or RB20 is too heavy for your RX8, you might understeer easily. Also fuel guzzling like mad. If you wanted to change engine, better you buy brand new Altis dual VVTi 1.8L or Korean Nu 1.8L or Theta 2.0L engine that save FC yet lightweight around 120kg or less.

Exhaust too, don't bother to change, more likely to cause pressure loss and the car can't digest exhaust properly.

             

Been into the same situation,too...(Massive CNY Traffic Jam when going to Kedah in early 2012)

No such problem happened....So that was my luck,also.

But to add one more thing,carbonized rotary are not good.So whenever I got a chance I would rev tha b1tch hard enough especially when I was driving more than 1 hour without any redlining...I would find my way to doing it.Luckily it also handle better in corner than my fat Z33 so it kinda easy to push the engine while having a road-worthy fun with that.

So far no problem with my RX8 but mine was revised & facelifted version so you can expect that Mazda has made some revision on the engine,ECU & such other than just a look.(first gen ECU reportedly had a problem especially on the AT version where the engine management system didnt pumped enough engine oil during high-speed engine operation but it happened on several chassis no. if my mind served me right...In US the problem has been led for some class action suit & Mazda does make sure all the infected' model no. are getting free software update...)

Changing engine is good for reliability & power but not sure how it would effect the chassis rigidty & handling.So far I love RX8 because of the handling,& sharp steering respond.Been into track for quite a time with my Z33 & Nissan sportscar always felt heavy & less steering feedback.

I can say the RX8 had the same steering feel & handling behaviour as the NSX....Only a lil' bit sharper',probably that just me,but smoothness of wankel engine(where the polar of momentum are not up & down,but rather spinning directly on one linear direction) are making me just a bit more confident on driving it to the edge rather than both NSX & Z33.(Which I also happened to own,as well)
Ah choy is a good wankel mechanic,go for him.Best rotard guy ever !

Regarding the RX8,I admit I was love the facelifted model in Nemesis Blue & R3 package...Look dammmn good!

If got PP, even more awesome.