how much longer

3-1-02, 2:01

hey guys, i've got a question that i was wondering if anyone can answer. I just bought a 89 mx6 GT with 169,000 miles on it. the top end has been rebuilt but i was wondering if anyone knows how long these engines usually last before they start needing work. by the way, the car runs great right now.

**Pyro** · 3-1-02, 12:22

Our engines are built really well, other than the normal wear and tear, if they are porperly maintained ya know oil change every 3K and what not they will last for ever. There are a lot of high mile cars on this board, and most of them have not needed a rebuild. If you an ATX then that's some thing to watch, that's kind of the weak link in the car. If you have an MTX those things are supposed to be tanks so you shouldn't have much trouble with that. Hope this was of some help to you.

**mx6_23** · 3-1-02, 17:08

whats the difference betweem atx and mtx

3-1-02, 17:35

atx = automatic tranny
mtx = manual 5 spd

Congratulations on your new car. You'll love it.

3-3-02, 1:40

my car is an mtx.
the whole top end has been rebuilt. the car runs like a champ.
I use to have a different 89 mx6 and it had an automatic tranny. i bought it from my dad right after he put a new tranny in it and a shift kit. the automatics aren't near as fast as the 5 speed, i noticed.

**anarchyx34** · 3-4-02, 2:32

wrong forum...

**mrfunji** · 3-4-02, 11:37

rebuilt top end on a engine w/ high milege will cause problems.

Over time, your engine (normally) wears evenly. Your valve springs gradually get weaker, carbon builds up etc.

When you rebuild the top end it tightens your valves up real nice but blow by and wear increases on your bottom end (pressure finds the weakest link). I wouldn't be surprised if you end up leaking compression in cylinders soon or spinning a rod bearing in 10,000 miles or something (it does depend on your driving style though)