Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

1HDT question

Tech Talk for Cruiser owners.

Moderators: toaddog, Elmo, DUDELUX

Forum rules
Post Reply
Posts: 552
Joined: Mon May 26, 2003 2:47 pm
Location: across the pond

1HDT question

Post by beanz2 »

Hi guys,

Does anybody here know what changes Toyota made to the 4.2L turbo diesel (1HDT) engine in 1993?

Dave
Top
Posts: 2097
Joined: Tue Aug 12, 2003 6:50 pm
Location: wollongong

Post by dow50r »

Bearings were played with (composition) injecter pipes were larger, floot in tappet cover had smaller opening to stop oil bypass, and rings were better quality all this is compared to first model hdt...90 on.
Andrew
Top
Posts: 552
Joined: Mon May 26, 2003 2:47 pm
Location: across the pond

Post by beanz2 »

Thanks, Andrew. Are there parts that do not interchange between the versions?

Dave
Top
Posts: 2097
Joined: Tue Aug 12, 2003 6:50 pm
Location: wollongong

Post by dow50r »

No they are all thesame basically, upgrades happen all the time....
Andrew
Top
Posts: 552
Joined: Mon May 26, 2003 2:47 pm
Location: across the pond

Post by beanz2 »

Thanks!
Top
Posts: 2149
Joined: Sun Oct 20, 2002 6:59 pm
Location: gold coast, australia

Contact:
Contact NICK

Post by NICK »

i have been told by afew people that toyota noted a problem with the rings and bottom end bearings and it was part of a 100,000 service to change these.


any truth in this?



NICK
TECH SCREW GURU
Top
Posts: 552
Joined: Mon May 26, 2003 2:47 pm
Location: across the pond

Post by beanz2 »

The big end bearings has been well discussed but I haven't heard of the rings failing.

Dave
Top
Posts: 2097
Joined: Tue Aug 12, 2003 6:50 pm
Location: wollongong

Post by dow50r »

Gday
The rings dont fail, but they do wear out and let oil past fairly quickly (100k kms) and ive heard that in Japan, Lead is not allowed to be used in the manufacture of the bottom end bearings...dont know if thats true or not...there were many recalls for the motors in the S1 80...mainly for pump and injecter lines issues, Toyota were paying for the bigends to be replaced for years after....and it didnt fix the problem till the next motor...the hdft
Andrew
Top
Posts: 6021
Joined: Sat Feb 15, 2003 11:01 pm
Location: Shed.

Post by dumbdunce »

I also hadn't heard about the rings, I regularly service a couple of high-km (300,000 +) early 1HD-T's and they only go through half a litre or so per 5000km, which I had always put down to crankcase vapour burn rather than ring bypass.
Free air locker to the first 20 callers!
Top
Post Reply

Return to “Cruiser / Prado”

Who is online

Users browsing this forum: No registered users and 0 guests