to re=build or not

Seen plenty of sad stories when people rebuild 1HZ motors. Overhaul the pump and injectors and it will be a new vehicle. I believe Toyota is now sell motors at a resonsable price.

What is the exact problem that is causing the thought to rebuild??? Find a bit more out before spending the cash $$$$$$$$
Rolande

Don't know about the 1HZ motor, but you can't go by the km, as it depends a lot on servicing and how it's been used. My old MQ Patrol with the 3.3L diesel clocked just over 1,200,000 km before it gave up the ghost, without a rebuild but with proper servicing. If it's been looked after, your 1HZ could be "just run in".

Regardless of the km on a 1hz, especially a 1990-92 engine replace the bearings (yes even on the non turbo) as the cranks aren't as strong as the later ones. this causes small marks in the bearings and leads to expensive problems later. The last set I had changed, I got done by Lithgow toyota and it cost me $350. Cheap insurance. There was no noises or problems with the motor, but the bearings apon removal were heavily marked.
The head mechanic changed the bearings in his wifes 80series the next week and they were worse.
I have been told that it should be done every 100000km and for the price, I would.