conflicting opinion on replacement of bearings

Joined: 18 May 2008 Location: vic

hi' Ive just purchased a 2002 cruiser diesel live axile 1hz after market turbo, approx 160,000km ( I gave up on me 'timebomb' other brand 3lt diesel turbo after 2nd motor). the other brand I knew a far bit about, but I'm new to the toyota. I'm getting two conflicting opinions re the replacement of bottom end bearings. Yes definelty do it now, and no don't need it, yours is the 'updated model'. does anyone know which way I should go!

Joined: 11 Aug 2004 Location: Brisbane

yours is a late model motor ................. same block etc as the 1hdfte no recorded bearing failures yet and there is lots of motors with over 500 on the clock out there now

1hdt's are the motor of concern

Joined: 18 May 2008 Location: vic

thanks mate,
(I'm lovin the 4.2)

Joined: 26 Apr 2005 Location: Sydney

i right now am rebuilding a 1991 1hdt because the conrod bearings failed, and i myself have a 1999 1hz which i want to replace bearings, but i have the same problem as you, some people say replace, others say dont, so i cant make up my mind.

Joined: 26 Apr 2005 Location: Sydney

badger wrote:

yours is a late model motor ................. same block etc as the 1hdfte no recorded bearing failures yet and there is lots of motors with over 500 on the clock out there now

then again, some people say to replace bearings no matter what engine every 150000k or so as part of maintenance? so would you think its not really necessary?

Joined: 06 May 2008 Location: Newcastle

i've seen 1hz's with 600,000+ kilometers and no big end bearing work. It was only ever a problem on early 1hd-t's, and even then not all of them.

Personally i wouldn't bother with a 100series 1hz, but if it makes you sleep better at night then go ahead. it's only a 4-500 buck job

Joined: 26 Apr 2005 Location: Sydney

oldmate wrote:

Personally i wouldn't bother with a 100series 1hz, but if it makes you sleep better at night then go ahead. it's only a 4-500 buck job

i also thought that it was a $500 job, but that quote would be labor included, the bearings for a 1hdt only cost about 60bucks, which i have just found out Very Happy