M20 325I HEAD TORK SETTINGS

[leee111]

HEY
AS ABOVE WHAT BOLTS DO I TIGHTEN FIRST ECT

[gooner1]

Reverse of untightening Lee.

[leee111]

it was just untighten everythin back to front

[gooner1]

Yes mate. Pretty sure there is a guide somewhere here, in Cylinder head swap.
Iirc , the bolts are suposed to be torqued up in three stages, the last stage being done with
a Torque meter. I just turned them a quarter of a complete turn on stage three, as i don,t have
a Torque meter. Hth

[B7]

Depends on which bolts you use. If you use the old style hex bolts then gooner may be right.

However, you should be using the new torx style stretch bolts. these must be tightened to the correct torque IN THE CORRECT SEQUENCE. Then in the same sequence tighten through 90 degrees. Then repeat that last stage again and there you have it.

[gooner1]

Sorry, i possibly did,nt explain that very well at all. Barry has explained it much clearer,
did assume you are using the newer Torx bolts.

[Brianmoooore]

After stage one, paint a dot or line on each bolt head ,at the same position, with a permanent marker. After you have completed the further two stages of tightening them by 90 degrees, the lines will confirm (or otherwise), that you haven't missed one.

[e30topless]

if you buy an elring headset the sequence is included on paper

one other thing to remember before fitting the head is to ensure the head bolt threads on the block are cleaned out of any oil/water or debris

this could give you a false torque reading and could damage the block/threads

[B7]

if you buy an elring headset the sequence is included on paper

one other thing to remember before fitting the head is to ensure the head bolt threads on the block are cleaned out of any oil/water or debris

this could give you a false torque reading and could damage the block/threads

I've actually see a block crack outwards due to oil in the head bolt thread hole. Causes a hydraulic lock (kind if thing ) and it cracked the outside of the block. Mind you it was a frech peice of scrap so it didn't matter too much

[e30topless]

if you buy an elring headset the sequence is included on paper

one other thing to remember before fitting the head is to ensure the head bolt threads on the block are cleaned out of any oil/water or debris

this could give you a false torque reading and could damage the block/threads

I've actually see a block crack outwards due to oil in the head bolt thread hole. Causes a hydraulic lock (kind if thing ) and it cracked the outside of the block. Mind you it was a frech peice of scrap so it didn't matter too much

I did it to a sierra years ago

thread was full of oil