Clio 172 Headbolt tightening torques

[ianwilson]

hi, can someone tell me procedure for tightening headbolts down on a ph2 172 please? standard bolts etc. also i have had the dephaser pulley off the cam, do i need to put it back in a certain position on the camshaft or just bolt it back on and just the cam back upto timing marks?? thanks

 

[Riley!]

RTFM

 

[Fred@BTM]

exhaust pulley HAS to come off too, need new headbolts also

 

[pastieman]

Stage 1 30nm
Stage 2 30nm
Stage 3 180 degrees

As above re new bolts

 

[Laine_16v]

Hmm not sure the above is corr ect? as far as im aware, theres is only ONE tightening stage to 20-30nM, before a final angle tightening.

 

[mr.pink87]

Hmm not sure the above is corr ect? as far as im aware, theres is only ONE tightening stage to 20-30nM, before a final angle tightening.

Yeah, 20 Nm and 165° +/- 5°

 

[Fred@BTM]

nope, 20nm leave for 10min, 20nm, leave for 10min and recheck for 20nm then 165deg

 

[mr.pink87]

my bad!

 

[Laine_16v]

I did mine mine to 20nM + 165 degrees, havent had an issue.

 

[franx]

^^ dug up this ol' thread :

My engine was rebuilt ; the mech said it would be wise to re-torque the headbolts after a couple thousand kilometers of driving/breaking her in.

Now i also read here + there that these F4R engine headbolts do'nt need re-torqueing .

Do or don't ?

 

[Fred@BTM]

no need, unless you want to spend £500+ (rocker cover off, belts off etc)

 

[franx]

Sound.
Thanks Fred