torqueing head

hi,

95 Mazda Miata

even with glasses, deciphering the "instructions" which came with my
head gasket is difficult, so does this sound right?

torque to 22
43
58
back off 90 degrees
re torque 58

run motor to fully open thermostat
let cool 4 hours
open the top of the expansion tank

back off 90 degrees
re torque 58

tia,
peter

For assembling the cylinder head the Mazda Workshop Manual (1990 & 1994)
simply says: Tighten the cylinder head bolts in two or three steps in the
order shown. Tightening torque: 76-81Nm / 56-60 ft-lbf. Your way does the
same, just takes a little more time...

Jeroen Feelders
Technical Commissioner
Mazda MX-5 Club of the Netherlands


"peter" > schreef in bericht
...
> hi,
>
> 95 Mazda Miata
>
> even with glasses, deciphering the "instructions" which came with my head
> gasket is difficult, so does this sound right?
>
> torque to 22
> 43
> 58
> back off 90 degrees
> re torque 58
>
> run motor to fully open thermostat
> let cool 4 hours
> open the top of the expansion tank
>
> back off 90 degrees
> re torque 58
>
> tia,
> peter
>

Jeroen Feelders wrote:
> For assembling the cylinder head the Mazda Workshop Manual (1990 & 1994)
> simply says: Tighten the cylinder head bolts in two or three steps in the
> order shown. Tightening torque: 76-81Nm / 56-60 ft-lbf. Your way does the
> same, just takes a little more time...
>
> Jeroen Feelders
> Technical Commissioner
> Mazda MX-5 Club of the Netherlands

Hi,

It was the backing off 90 degrees that really caught my attention...does
that sound right and reasonable? these are the most difficult
instructions I have seen in quite a while.

thanks,
peter

I haven't seen this kind of instructions either. You could go their way,
just to be sure... It only makes the process more secure.

Jeroen

"peter" > schreef in bericht
...
> Jeroen Feelders wrote:
>> For assembling the cylinder head the Mazda Workshop Manual (1990 & 1994)
>> simply says: Tighten the cylinder head bolts in two or three steps in the
>> order shown. Tightening torque: 76-81Nm / 56-60 ft-lbf. Your way does the
>> same, just takes a little more time...
>>
>> Jeroen Feelders
>> Technical Commissioner
>> Mazda MX-5 Club of the Netherlands
>
> Hi,
>
> It was the backing off 90 degrees that really caught my attention...does
> that sound right and reasonable? these are the most difficult
> instructions I have seen in quite a while.
>
> thanks,
> peter