Bearing Cap Bolts

[GiveMeABreak]

Hi Marc, can you give me the torque specs for the crank and Conrod bearing cap bolts for my C5 please.

[GiveMeABreak]

Reciprocating Gear - Tightening Torques

Reference	Designation	Tightening Procedure
(1)	Ancillary drive pulley fixing bolt	Pre-tightening to 7 ± 0,7 daN.m
(1)	Ancillary drive pulley fixing bolt	Angular tighten to 62 ± 3 °
(2)	Underside of piston jet (Overhaul)	Tightening to 1 ± 0,1 daN.m
(3)	Big end nuts	Pre-tightening to 2 ± 0,2 daN.m
(3)	Big end nuts	Angular tighten to 70 ± 5 °
(4)	Crankshaft bearing caps fixing bolt (*)	Pre-tightening to 2,5 ± 0,2 daN.m
(4)	Crankshaft bearing caps fixing bolt (*)	Angular tighten to 60 ± 5 °
(5)	Crankshaft sealing flange	Tightening to 1,4 ± 0,1 daN.m

Order of tightening of the crankshaft bearing cap fixing bolts

(4): Crankshaft bearing caps fixing bolt.

[darbuck]

Thanks Marc

[darbuck]

Hi All,
before I put this back together, Can anyone tell me if they think the bearings need replacing there is some very light scoring/scratches and discoloration? I also would like some advice on on the finish on the lobe of the crank. It's the really rough looking surface in the 4th and 5th pics it looks deliberate to me I imagine it is factory and is to aid distribution of oil in the Sump.

[moizeau]

Plastigage and factory specs would be you friend here. Can you feel any roughness with a fingernail?

[darbuck]

Very slight drag at points hard to detect but there is a little bit.

[darbuck]

Had an engine builder have a look at these he said they are fine so a win I think.