REFLUX

I'm positive this subject has been beaten to death, but the search didn't help me in finding what I'm looking for.

I own a Canadian 90 TurboII with 150,000 KILOMETERS (approx. 93,000 MILES) on it and I do not know at what mileage I should rebuild the engine.

I hear of 13b's lasting 200,000 MILES but so many of the RX-7 guys up here in Canada say "rebuild it at 200,000 KILOMETERS"

the engine has been babied, timed down after driving, warmed up before driving, regular oil changes, hasn't been dragged or auto-x'd, the works

so which is it?!

rebuild at 200,000 KM or 200,000 MILES

thanks in advance

Project84

There is no set mileage that Mazda established. I have heard people who say Rotays don't last more than 60,000 miles, which isn't close to true, so don't listen to the hype. When ever the engine shows signs of seal leakage (water, apex or oil control seals), loss of compression, or just blows up, then its time for a rebuild. Other than that, its up to you the owner to decide weather you want to and can afford to rebuild the engine. There is definetly no dissadvantage to rebuilding a motor once you are up in the 6 digit mileage range on the odometer.

diabolical1

iTrader: (3)

yep ... listen to project84. the whole rebuild at "X" miles/km is rubbish. generally speaking, the turbocharged motors lead shorter lives than the normally aspirated motors, but my guess is that a lot of it has to do with overzealous owners and shortcomings in maintenance and/or tuning - in most cases. it is not completely unheard of for turbocharged motors to live past 100K miles/160K km.

care for the engine! that point cannot be stressed enough. even while you're having fun with your car, just use common sense with your maintenance. like if you like to step in it all the time, then you might want to change your oil a bit more often than the 3000 mile window - stuff like that.

just rebuild when you need to (water seal rupture, oil consumption exceeds 500 miles/quart, low compression, etc.) however, if you plan to SIGNIFICANTLY (i consider anything above 280 HP to be significant) crank up the boost with aftermarket upgrades, then a rebuild that focuses on strength and reliability would make sense if you can afford it.

REFLUX

hey thanks so much for the info!!!
it was exactly what i was looking for!

Tom93R1

iTrader: (2)

My TurboII had 120k miles when I sold it and the motor was still quite strong. Didnt burn any oil (about a quart per 2500 miles) and no coolant seal leaks. Dont even worry about replacing the motor yet if milage is your only concern.