bit more info needed

[Anonymous]

got a load of 440 bits to build a spare motor,has anybody any idea which way round the conrods are pressed onto the pistons or does in not matter??
cheers ray

[Pete]

Do you know how they came off the crank or was it a box of bits?
If that was the case then you may need to get the rods re-circled.

[Anonymous]

hi pete,the rods are complete with correct caps,got full set of eight that need to put some new pistons on,just wondering if theres a front and rear of the rod or can it go anyway round (the pistons have an arrow facing forward but the rods don't)if you know what i mean??
cheers ray

[Blue]

Yes there is a right way round to fit the rods. If you look at the big end you will see an oil squirt hole on one side. You want to end up with that oil squirt hole aimed at the oppasite cylinder bore when installed in the engine, so assemble as needed to achieve that whilst still keeping the arrows on the pistons pointing forward.

[Anonymous]

thanks lads for the info,gonna crack on now and see how it goes

[Anonymous]

Hi Ray,

Are they press-fit standard pistons?

If so they need to go to a machine shop with a press and a special support boss to stop the piston being deformed whilst fitting the pin.
The other more common method is to heat the littlle to approx. 500 degrees to expand it sufficiently to slide the pin through. You only have a few seconds to align the pin before it grabs hold!

All this said, if they are floaters you are in luck.
p.s. if you dont get the pin in the right place with the heating method, you still need a press and boss to realign the pin. OOPS!

Baccy.

[Anonymous]

hi there baccy,yes they are a press fit into the rod but got a press and a proper support at our dealer,bet i can still balls it up tho
cheers ray...