UkLegacyT

Hi,

i was hoping somebody may be able to help me here. im doing a head gasket on my mates dad's montego. its an L-reg 2.0 turbo diesel.

does anybody know the tightening sequence and torque settings for the cylinder head bolts on this engine?

thanks
ian

p.s. also camshaft pulley torque setting too if you can

dnb

I seem to remember that my father-in-law has a haynes manual for one somewhere. I'll try to look it out.

UkLegacyT

cheers mate

Dark Blue Mark

Not sure on the figures but as long as you go in a cross ways manner and nip them up before flogging / torquing it will be fine.

MB

Huey220

Try here www.rovertech.net ask away

MGJohn

10-6-2-3-7 (Rear Bolts)

.9-5-1-4-8 (Front Bolts)

I remember this by starting with the centre front bolt then moving back to the centre rear bolt and then clockwise out and around for the rest.

If its the Perkins Prima Diesel used 1986-1993 with the longitudinal ribbed camshaft cover similar to the O series petrol 2 litres, then the above sequence will apply. IIRC, which in effect is identical to the sequence for the O series petrol n/a and turbo engines.

Alloy Camshaft cover bolts sequence:

10-4-1-7-9 (R)

8-6-2-3-5-11 (F)

HTH

MGJohn



[Edited by MGJohn - 4/29/2003 6:49:01 PM]

[Edited by MGJohn - 4/29/2003 6:49:24 PM]

[Edited by MGJohn - 4/29/2003 6:49:52 PM]

MGJohn

Torque setting sequence:

Stage 1: 50 Nm 37lb/ft

Stage 2: 100 Nm 74 lb/ft

Stage three: Tighten another 90 degrees

Above from Haynes Manual 1857

UkLegacyT

Thanks for your help guys.

MGJohn, cheers mate
if i remember correctly, there are 10 bolts, so i assume its the first sequence.

thanks again
ian

MGJohn

Yes, the first (10 Bolts) is for the cylinder head, the other sequence is for the alloy camshaft carrier which is part of the cylinder head. You should not have to disturb the camshaft if only the head gasket needs attention.

Oh yes, Camshaft sprocket bolt torque value:

66 Nm 48 lb/ft

The cylinder head bolts on the diesels need more torque than even the petrol turbos .... because of the much higher compression ratios. Diesel = Compression/Ignition engine.

[Edited by MGJohn - 4/30/2003 5:07:26 PM]

UkLegacyT

oh i see what you meant mate. no, i havent disturbed the carrier as you mention.
thanks for the sprocket torque too

cheers
ian

p.s. i assume the head bolts are the reusable type? as they arent listed in the parts catalogue.