Technical Torque settings conversion for C Head 899

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Technical Torque settings conversion for C Head 899

OOPS ! !
Now why didn't I check the Torque Wrench that I borrowed and realise that its only setting is = Foot Pounds (exactly whats inscribed on it)
I thought that when I set it to 30 I assumed it was 30ns Hmm . So my dilema now is that I cant move on with the job until I equate where I stand with this situation as in -
a:The head bolts are tightened up to 30 foot pounds where does this measure up to as in 30ns
b: if the torque is currently more than should be before the 90 + 90 angle tighten , where do I go from here , do I slacken and re-do the bolts to the equivalent foot pounds (once I find out the conversion) or leave as is (the bolts are really tight) .. __________________
 
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To answer part of my own Question (no takers on this one ?)

30 pound force-foot measure = 40.67454 newton meters (which is where I am at the now)

Wheras 22.1 pound force-foot measure is equal to 30 Newton meter (where it should be before 90 + 90 degree turns

QUESTION ! DOES ANY ONE KNOW WHAT THE TORQUE MEASURES AFTER THESE 2 X 90 DEGREE TURNS ?

It cant be far off 40nm can it ?

So maybe I should leave the torque as is + hope for the best ? Any advice welcome .. Thanks
 
i stand corrected...

autodata says

20Nm

40Nm

90*

90*

head tightening sequence is as follows
8 6 2 5 10
7 3 1 4 9 (flywheel side)
So if I'm at 40Nm at the moment , have I still to go 90 - 90 ? (hardly budging any more + I would reckon there's no way the bolts could handle 2 x 90*
 
is 30nm +90 +90:)

and personally i dowt an extra 10nm will a dramatic difference

Ash
Thanks for reply whitz , so your also of the opinion 90 + 90 on top of 40nm will be ok oormaybe do one 90 and consider the other being the extra 10nm ?

I read this in a post on a fact finding web search > QUOTE

Bought a 2001 sporting last week and I was horrified to find it losing water and misfiring within days. Took the plugs out and sure enough No.4 was sporting a brown tinge, indicative of water in the cylinder. I have not replaced the head gasket yet, I have just re-tightened the head bolts and it seems to have worked so far. The bolts were not tight enough in my view at only 30Nm so my advice is to everyone is to tighten them, ideally as a precaution before the gasket blows.
Go to each bolt in turn-
Losen the bolt by eighth of a turn
Re-torque to 55Nm
I know this process is not specified in any technical manual but it was mandatory on the aluminum engines of the 60s so I see no reason for these engines not to need the same treatment. I fact I suspect it is the cause of gasket failure but in this age you could not tell your Fiat owner after suffering the cost of his repair that he has to return after 500 miles to pay even more money just to have the bolts tightened again! UNQUOTE <

I think this might not be far of the mark ?
 
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just goin on what auto data have published buddy

Stage 1: 20Nm
Stage 2: 40Nm
Stage 3: 90*
Stage 4: 90*

the wide majority says 30Nm+90*+90* for the 1108 head too but a punto 1108 head says 45Nm+90*+90* i did the latter when i did the HG in mine
 
just goin on what auto data have published buddy

Stage 1: 20Nm
Stage 2: 40Nm
Stage 3: 90*
Stage 4: 90*

the wide majority says 30Nm+90*+90* for the 1108 head too but a punto 1108 head says 45Nm+90*+90* i did the latter when i did the HG in mine


Hmm i read from the book of lies, o wait Haynes manual

and it was 30Nm+90*+90* for the 899, seems it differs slightly from engine to engine

Ash
 
just goin on what auto data have published buddy

Stage 1: 20Nm
Stage 2: 40Nm
Stage 3: 90*
Stage 4: 90*

the wide majority says 30Nm+90*+90* for the 1108 head too but a punto 1108 head says 45Nm+90*+90* i did the latter when i did the HG in mine
Ok Richy thanks , so what would you recommend my next move remembering my predicament ?
 
your next move IMHO is to start from scratch... undo the bolts you have tightened

tighten in sequence to 20Nm
when and only when all are done
tighten in sequence to 40Nm (thats not a further 40 on top of the 20 to make 60... its 40Nm)

now that all your bolts are tightened to 40Nm mark each bolt on a 'point' and mark the head itself at 90* clockwise from that 'point'.

mark the outer wall of your socket where the 'point' is

put your socket on a bolt ensuring the marked point on your bolt coinsides with the mark you made on the outer wall of your socket and turn untill the mark on your socket lines up with the mark on your head (no pun intended)

take your socket off and the point on the point of the bolt should line up with the mark on the head... repeat for the remaining bolts

now go round and mark another 90* from your bolt point mark on the head and repeat as above

you will have a visual reference that all the bolts are tightened

does that make sense?
 
40nm *90 *90 Mission complete , woW not for the faint hearted now that's for sure . Thanks to all for excellent (as usual) on the job advice . 2 things
1 : A half inch socket is far more of a tight fit on the head bolt rather than a 13mm .
2 : On head bolts 7 + 3 there is one silly little nondescript heat warped bracket that makes these 2 bolts very difficult to come off , I whammyed them with an old socket which was just a bigger circumference than the head bolt and this levelled the bit under the head of the bolt before I was able to slacken them (just about lost the topside of the bolt which is why I had to find a 1/2in socket) Suffice to say I never put this bracket back on(elaborate cable holder) and will use cable ties there.
Will cable + hose up tomorrow and post up my result Cheers Guy's ..
 
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