Well i was just looking at that one dudes thread and I was wondering about the same with the turbo ones. How many miles before the engine blows? and when is the best time to rebuild the engine?

 

There is not specific mileage where the engine just goes.

But, the general consensus is that at 100k miles a TII engine is getting tired.

Mine lasted longer, others lasted less.

The best time to rebuild is when you start noticing a drop-off in compression/power etc. Do a test every now and then.

When the engine starts getting tired, re-build it before it chucks a seal into your turbo...

 

yea
how long do u think the seals can last?

 

mine is at 125K miles now compression is alright but not great


however still runs strong

 

wow sounds good except for the low compression

 

Just went through a rebuild on a '91 TII. Picked it up with 87k miles on the odometer. Compression test was 95s all around. As I've been reminded, better to rebuild before you damage the housings with broken apex seals?will save you the cost of new/used housings.

 

Its all in the maitenence also, if you really baby your car itll last very long, dont let em sit for too long, try not to boost too much as forced induction is one major wear on the engine. Ive seen TII's reach the 200k mark cuz of the good owners and their great care of the car. And besides as long as you dont blow a seal and damage somthing, a rebuild is really worth it cuz then you got a virually new engine, plenty of power mods to choose from and in the end youll end up with more hp and have it for a long time. But it all depends on the rebuild...

 

mines at 105k runs perfect. boosted way to many times a day to count

 

my friend has a tII engine with 185k original miles on it. runs smoooooooth boosts fine..

 

Exactly 106,431.7 miles

 

140,000 and going strong on my 88 TII. Full power and smooth

 

my new TII had exactly 100k on her when she lost compression on the rear rotor.......what do you guys estimate the milage on the turbo?

 

my new TII had exactly 100k on her when she lost compression on the rear rotor.......what do you guys estimate the milage on the turbo?

 

It all depends on how you treat her, make sure she has adequate fuel supply, cold engough air not to detenate, tune up regularly, if you want a TII to last I'd recommend getting a walbro fuel pump b4 you get intake and exhaust, then get an SAFC and go to a dyno or use a wideband O2 sensor to tune it, any car will last a long long time it just has to be running correctly!!!!......btw rich is better than lean

 

my is at 190000 kms
that is around 111,000 miles... runs strong...
i can go up a steep drive way under 1000 rpms in 2nd and still make itu p

 

190k = 119k miles.

Mine blew at 87,832KM. That's about 50k miles.

But, it had sat for 2-3 years and the previous owner said "and I've never had this engine above 3000, I don't know why it blew!" so that might have had a bit to do with it, the inside looked pretty nasty

 

Mine went 130k miles. It was leaned out and chewed up all the seals on the rear rotor. The front one still looked in decent condition. The car would start on its own and idle after it blew.

 

they say 100,000 is average. but i have seen a few that make it up to almost 200,000 on stock motor and turbo!! not that its recomended. just depends who much u take care of it

 

wow sounds like u guys know exactly wut you guys are sayin. Thats great to have u guys give a response to stuff i dont know about.

 

'89TII had 155,000 miles before a problem. Still had a 6 on Mazda tester. Low but all equal. Decided to throw a Mazda reman in because I was experiencing a problem under boost in 3rd. Either a stuck, or cracked seal.

 

133,000 for the control ring, but it's not like it's hard to rebuild a engine, hell im 16 and im about to start on mine....

 

I'm the guy IDx was talking about....I actually have 189,000 miles now on the orginal engine with the mods listed below.....my advice is change your oil reguarly....i change mine every 500-800 miles and premix.

 

DANG! thats hecka low milage before u change it
man u must baby it like crazy

 

I don't think I could afford to put decent oil in my car and change it that often, that's like every other day

 

Mine has 152k miles with just about the same mods as the 189k guy but I have a fmic and paralel fuel rail mod.

It pushed 75 psi on each rotor on a standard comp guage with the valve removed. With the valve in the front hit 105 and the rear hit 100.