nissan navara 3.0 litre desiel 2002 model

Submitted: Friday, Apr 27, 2012 at 13:59
ThreadID: 95185 Views:1793 Replies:2 FollowUps:2
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ive just had a new head put on the motor & i need to re-torque the head bolts, does any-one know the specs on the tension required ?
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Reply By: coonick - Friday, Apr 27, 2012 at 15:08

Friday, Apr 27, 2012 at 15:08
no...however a gregory`s manual will be of great benefit.
AnswerID: 484379

Follow Up By: ron s3 - Friday, Apr 27, 2012 at 15:19

Friday, Apr 27, 2012 at 15:19
yeah thanks, i might get out there,it looks great, i live near bundaberg
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Reply By: Ron N - Friday, Apr 27, 2012 at 16:19

Friday, Apr 27, 2012 at 16:19
Ron s3 - The torque settings are a convoluted, involved, 6 stage process, according to the thread on this following forum (link below).
One forum member indicates the bolts are also a one-shot fastener - i.e., not re-useable, and new bolts need to be fitted, after the originals have been used once.

This is not an unusual arrangement - I recall that Mack require new big end bolts to be installed when doing an engine overhaul, because of the possibility of the elastic deformation of the high tensile fasteners being exceeded in use.

A high tensile fastener relies on some degree of stretch to keep tension on the item being retained. This is called "elastic deformation".
Once the fasteners elastic deformation limit is exceeded, by extended use, then the fastener must be replaced.

http://www.nissan-navara.net/viewtopic.php?f=3&t=11619

Cheers - Ron.
AnswerID: 484385

Follow Up By: ron s3 - Friday, Apr 27, 2012 at 16:33

Friday, Apr 27, 2012 at 16:33
ok,thanks for the reply that has helped me out, i just wonder why the mechinic didnt know that when he fitted the new head.


Thanks Ron
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