Cylinder head bolts

[D.D.Anderson]

Im now going to install my new cylinder head soon.

The old bolts is marked 13". the Center T bolt was marked 12T".

I brought new bolts for A14, but is marked 12". Does that matter?

Remember, engine only gone 92000.

[Guest Rick-rat]

Why can't you use the bolts you took out?

[spottedog]

Note that the longer bolts are on the right hand side, and ONE OF THEM IS A SMALLER DIAMETER THAN THE OTHERS

 

This bolt goes in the middle hole on the right hand side and is marked "12T" on it's head.

[D.D.Anderson]

Why can't you use the bolts you took out?

Well my mate is autorized mechanic and tells me NOOOT to do it.

So now i really don't know, i thought it would be ok but. 

 

I know 12T is going on middle, but the other bolts is marked 12's so i guess they are same as 13's only lower torque required?

[ggzilla]

The 12 bolts are weaker than the 13 bolt, so use the 13 bolts.

 

Unlike some modern engines with TTY bolts, Datsun head bolts can be reused.

[Cpl620]

if its a small engine with a mild compression i wouldn't put too much thought into reusing head bolts again. but if they are being torqued a 3rd or 4th time, grab new ones. is it ideal to reuse them, no. do you run a slight risk of the bolts failing, yes. but like i said. a normal L series is not going to make enough power to really put stress on the bolt to failure. just torque to highest factory spec and call it a day. out of all of the stock engine ive done head work on, and reused the bolts, ive never had a problem pertaining to the head bolts.

[datzenmike]

The center bolt #11057-H5700 is common to all A13/14/15 heads and allows oil up from the block and so is narrower.

 

The other A13/14/15 head bolts #11056-H2301 are the same and also used on the Z20 and Z22 engines in the 200sx, A10 and the 720 truck.