1600 engine

[shelleyhelley]

Does anybody know if I take the head off my 1600 521 Datsun truck do I have to use new bolts when I put it back together are they at one time use bolt only?

[datzenmike]

Yes, they can be reused if not damaged. Clean the threads and those in the block, wipe bolts with oily rag, make sure the head is flat using a proper straight edge, do not use a sealer or any gasket coatings and away you go. Use a good torque wrench and tighten in this pattern to 20 ft. lbs....

 

R..A..D

7......8

3......4

1.......2

5......6

9....10

 

Repeat this pattern to 40 ft. lbs and one last time to 60 ft. lbs.

 

 

[Crashtd420]

Also if you are not trying to redo the front cover make sure you read up on blocking the cam chain tensioner.....

Common mistake is the tensioner pops out during a head gasket change and it's not realized.... 

[datzenmike]

Good point I didn't read the first post enough. Yes the chain tensioner must not be allowed to pop out. If it does the whole front of the engine (timing cover, water pump, distributor, oil pump, alternator, radiator) has to be removed to retrieve it... and you have to drain the cooling system and buy a few new gaskets.

[mklotz70]

This is the chain holder they're talking about.  I'm pretty sure it prints 1:1 so you can use it as a template to cut your own from a block of wood.

http://www.bluehandsvideo.com/l-series-timing-chain-tension-retainer.html

 

and if you need the manual....

http://www.bluehandsvideo.com/manuals.html

 

 

Edited January 18 by mklotz70
added link

[banzai510(hainz)]

why take the head off again ?

maybe some datsun guy can help live locally

Edited January 18 by banzai510(hainz)