[Eugen_piano]

angle - how crucial?

hi guys,
i did change my HG yesterday. i've tightened the bolts to 20nm, then i waited for about one hour and checked them again. all bolts had to be retightened.
after this, i've started the 90 degree sequence (4*90 turns).
problem and question is: i DON'T HAVE AN ANGLE METER/GAUGE, so i did this by sight. i did put some marker on the top of the bolt, but i'm sure it is not 100% accurate. so, HOW CRITICAL is that 360 degree rotation? i mean, if some bolts are a few degrees more or less, will it be ok?
thanks.
ps: does anybody know a final torque specification, so i can check all of them after the 360 degree turn?

 

[Eugen_piano]

Thanks. Indeed, V. Reinz mention on their website that angle tightening is more accurate than torque. I did check my marks again, they look quite ok. because the marks were thick, there is no exact way to tell, but they do look good.

one of the bolts (no. 8) is a few degrees more tight (like somewhere between 12 and 1 o'clock, but more close to 12) and probably bolt no. 10 (the last one) is a few degrees less.

what can possible go wrong? i actually mean the question. like:
can i have damaged the gasket? can it be less tight and leak? can the bolts brake? and if the car will work, should i still worry for the future or not?

 

[Eugen_piano]

PS: should i undo all the bolts, in reverse sequence and tighten them again to 20 nm and then 360 degrees more carefully?

 

[Eugen_piano]

yeah, thanks. i did put the cover on.
the mechanics i know say it should be just fine... we'll see. i'll get back here with an update, one way or the other
hope for the best.

 

[Eugen_piano]

here is a short update:
engine is up and running. no coolant in the exhaust, nor in the oil pan. as far as HGF symptoms, everything is good.

on the other side, i can see the infamous coolant external "leak" around the alternator edge... although i wouldn't call it a leak yet, it is only a "humid" place...

should i just let it be? or should i tighten furthermore 45 degrees each head bolt? what do you think?

 

[Eugen_piano]

let's say, if i decide to further tighten 45 degrees, i should just go ahead and tighten the head bolts (simple as that?) or i should loose them a little bit and only then re-tighten?

yes, i was also thinking about some radiator substance, but i'm not in a hurry with any of the solutions above.

thanks for the input.

 

[Eugen_piano]

update

so, i didn't retighten anything. that humid spot just didn't look like it was worth the trouble.

good news is that the engine is clean, dry and sound. i actually cannot see anymore leaking anywhere near the head (or in other places). also, there are no signs of evaporated coolant.

idle is very good and i did have to take the coolant out in order to fix some connections, so i took the opportunity and checked entire coolant... crystal clear, no oil stains, no other mud.

today i've passed the system bleeding with flying colors and i think this concludes my business on this thread :-D

thanks everybody for the help.