DixieTheKid

iTrader: (2)

So I've had this bottom end sat in my shed for a few months, so today I decided to put it on the engine stand a crack it open.

After taking of the sump and pulling the crank, pistons and rods out I noticed that all the mains and big end shells are brand spanking new, the core plugs are new and drilled and tapped. I grabbed the vernier calliper out of the tool box and started to measure all the components.

Crank main - 56.97mm
Crank big end - 51.98mm

Pistons - 90.77mm

The last measurement I took was from deck to journal and was 207.73mm is that not ment to be 205mm? Could be measuring in the wrong place, I measured from the pulley end of the block I.e no 1.

According to my cossie technical data manual the pistons are from a 3333 stamp block (grade 3) mine is a grade 2 and stamped 2222.

Now I have no way of measuring the bores to find out the diameter of the bores but a can tell you they look like they have just left the machine shop. I'm thinking now that I want to drop this bottom end into the p100 but what worries me is that the bores may be to big for the pistons making the piston clearance to large.

I'm I best of dropping the block, crack and flywheel down to my local machine shop and have them check it all over and balance it?

Thanks lads

Oh and the block is sat in the conservatory so I can take some pics if it helps?

costina

iTrader: (1)

all cossies ive seen are marked 2222 which are the selected blocks

DixieTheKid

iTrader: (2)

matthewpickup

if there is a lip on the top of the bore that gives an idea of wear , the shells should be stamped the size ie std,0.25,0.50,0.75 the best place to measure the bore is at the bottem ie sump end of bore , is std size piston not around 91mm .

matthewpickup

is the 2222 number not only any good as long as its std bore ?

DixieTheKid

iTrader: (2)

Shells are stamped std. No lip on the top or bottom or the bores.

DixieTheKid

iTrader: (2)

Thats correct which makes me think that mine has had a light hone.

matthewpickup

tbh mate i think you have a good one there
i would get it checked with someone you trust and go from there

costina

iTrader: (1)

Looks fine to re use check out around the head bolt holes and make sure there not cracked. No 2 exhaust side is the one which goes first.

Also when u build it up check head height and if its been skimmed a few times check the bolt in block measure to ensure it dont bottom out when torqued down. if so you will have to shorten the bolts to suit. Be safe be sure!!