Hi

im in the middle of a s2 resto, and I have just rebuilt my head. I was wondering, is it worth doing anything to the bottom end before I put it back on the road? it dosnt burn oil, no smoking etc but since its getting the works I mayaswell do something?

Apart from the rings, is there anything else worth doing when sump etc is off?

CheeRS for any advice!

Jamie

 

both big end and main bearing shells are always worth refreshing

 

As said, do the bearings, and may as well put new crankshaft thrust washers in. New crankshaft seals would be worth doing.

 

thanks for the input. Is all the above straight forward? Rebuilding the head was the first time I really got into the nitty gritty with an engine, so not much experience. Got a haynes tho and alot of willingness to learn

does the engine need to come out to do this? I know it would be a hell of alot easier, but can it be done still on the car?

Thanks again

 

Needs to be out of the car to do the main bearings, as you need the crank out which is bolted to the flywheel.

Bottom end is an easy re-build as long as you stick with in tollerance whch are given in the haynes manual.

basicly, strip the block down, measure the crank jurnals to see if there worn to much, if they are, a re-grind is needed and over sized bearings are required. Same for the bores. measure them up and see if there have worn to much, if so a re-bore is needed and over sized pistons and rings required.

if all ok, Hone the bores so new rings can bed in. lightly polish crank jurnals using fine wet and dry. the refit bearings making sure they go the right way round.
also the pistons and bearing caps etc all have to face the right way and be in the same order they came out of. Worth marking bits up when removing them.

 

thanks for that mate