Z1OwnersClub GB

Hi
the A4 manual states 25 ft-lbs (3.5 kg-m) for main head bolts. is this correct?
for the bolts at either end they state 104 in-lbs (1.2 kg-m) is this correct?

For the end bolts this converts to 11.76 N-M which seems very high

yes that is the correct torque setting but i would be careful with the two outside 6mm threaded bolts as they have a tendency to strip the thread or snap the bolt so i would tighten them by hand

You are right as regards the main head bolts Mark,the small bolts,i just nip em up with my inbuilt torque feel it wrench,the samller bolts tend to strip quite easily in these old ally heads..

z1bman wrote:yes that is the correct torque setting but i would be careful with the two outside 6mm threaded bolts as they have a tendency to strip the thread or snap the bolt so i would tighten them by hand

Thanks, I was concerned about snapping those bolts

Taffus wrote:

z1bman wrote:yes that is the correct torque setting but i would be careful with the two outside 6mm threaded bolts as they have a tendency to strip the thread or snap the bolt so i would tighten them by hand

Thanks, I was concerned about snapping those bolts

Odd's on the thread will strip way before the bolt gets overloaded

Pigford wrote:

Taffus wrote:

z1bman wrote:yes that is the correct torque setting but i would be careful with the two outside 6mm threaded bolts as they have a tendency to strip the thread or snap the bolt so i would tighten them by hand

Thanks, I was concerned about snapping those bolts

Odd's on the thread will strip way before the bolt gets overloaded

I can vouch for that

Taffus wrote:Hi
the A4 manual states 25 ft-lbs (3.5 kg-m) for main head bolts. is this correct?
for the bolts at either end they state 104 in-lbs (1.2 kg-m) is this correct?

For the end bolts this converts to 11.76 N-M which seems very high

All main Head nuts are first lightly oiled & then tightened in 2 stages & follow tightening sequence to first pass to .... 18lbs /FT .... then 2nd pass taken again in sequence to 25lbs / Ft
( The 2 x 6mm end Bolts... which should be tightened to 8lbs/Ft...but personally I'd do these last by careful feel alone ...as there very strippable )

What's the required torque fig in lb/foot for the camshaft cam cap bolts? Can they all be loosened-not removed and then re torqued in the correct sequence up to spec?

Again as per the other answers,these strip dead easy if torqued up,i just nip em up with a spanner and judging by hand!