fastback311

i am confused when you put the pistons back in the block do you match the connecting rods to these cylinders numbers, when i took out the pistons they were not in this orderhttp://www.boxwrench.net/specs/ford_289_302-5.0.htm

middiepride

im pretty sure you dont need to match them. thats for spark plug to dizzy wiring do you dont screw up firing order.

mustanglover66

you will need to put the pistons back in the same hole they came out of along with the same connecting rod.

Colorado_Mustang

+1e99e98

They should be marked for cylinder and orientation. Change that and you'll have some funky noises coming from your engine as it self destructs.

Your rods should be marked corresponding to Ford's cylinder numbering system. Sometimes, people will stamp them with the chity method, which is #1 in the front (on the crank) and #8 in the back counting sequentially. Ford is 1-5-2-6-3-7-4-8.

fastback311

my pistons came out of the block as follows

my block ford numbering

3 8 4 8


1 6 3 7

2 7 2 6

4 5 1 5



front front


,
should i put the pistons the way i pulled out or follow fords numbering, the numbers on the left two columns is my block

Soaring

That has nothing to do with the pistons going back in, and the order in which they go back in. All that is, is your firing order.

fastback311

so i should put the pistons back in the same cylinder they came out of so the wear pattern stays the same

THUMPIN455

not only wear but there is a chamfer on the bearings and rods so the crank journal doesnt bind with the bearring. There is a chamfer on one side only, so if you put it in backwards, you will have a somewhat HUGE problem... Even when you replace the pistons and reuse the same rods, as you would when you bore it, you must still put the rods in the right way. Often the machinist will have them marked so you put them in the right way.

There is more than can go wrong, but suffice it to say, put them back in the same holes if the pistons havent been off the rods.

Soaring

OK, I think we have two conversations going on here at once. Yes, of course you put the pistions back in the same hole as they came from. Mark them so you know. If you take the rods off the pistons to replace the wrist pin make sure the front of the rod is how you took it off. Mark it so you don't screw up. Now, you say the order in which you took out the pistons doesn't match the picture you posted. The picture you posted is not the order of how the pistons go back in, that picture is the firing order. You put the pistons back in as you took them out.

fastback311

thanx alot guys i did not take the connecting rods off the piston , i do have a follow up question the numbers on the connecting rods all face the same direction?