Saturday, 25 October 2014

Turbo Rebuild #7 - Top End Assembly

Fitted the pistons back in order and made sure that the arrow faced forwards. Adjusted the rings so that the gaps are in opposite directions on the piston. 

Fitted the new base gaskets and the aluminium spacer, the thickness of the spacer and gasket combined needed to be 1mm thicker than before to allow for the extra stroke on the gen 2 crank. I sandwiched the spacer plate in between the base gaskets, in taking this approach I do not need to bond the base plate. 

Lubricated the bores and piston sides with assembly oil. Rotated the crank so that Pistons 2 & 3 were raised, then lowered tha cylinder in to position and eased the rings in to place with a small screwdriver. Then repeated with Pistons 1 & 4 until they were in place. Rotated the crank by hand to ensure that everything rotates easily. 

Fitted a new head gasket and then positioned the head, lubricated the head studs with engine oil and tightened them down from the centre outwards. Torqued all of the bolts to 50NM then to 70NM and then finally to 100NM.

 














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