Quote:
kegs wrote:
i think dazza is right, becoz i have an a14 block with a15 crank and rods and i think, a15 pistons, so must be able to mix and match it all to work.....
Kegs
As has been discussed here many times before, the A14 & A15 share dimentionally interchangeable cylinder blocks & rods, so when the 5mm longer stroke crank of the A15 was used, the piston crown was reduced in height to prevent the top of the piston from sticking out of the top of the block.
You can convert an A14 to A15 specs by changing just the crank the pistons & the sump which has four small bulges on one side to clear the crank.

The amount of popup on these A14 pistons prevents a simple machine job on them to allow use in an A15, so it would be necessary to use a cu$tom made copper head ga$ket of about 3mm thickne$$.This effectively spaces the head upwards by about 2.5mm from stock. If a heavily reground cam & lifters are used, it might even come to the point where the adjustment of the rockers is not enough & cu$stom pushrod$ may possibly become necessary.
Using the pistons of one in the other is quite possible with plenty of work & expenditure, but most people prefer to use the correct part for the engine that they are using.
They sure look nice though, & the opening price probably represents a real bargain as it's unlikely that you would get them made to order for anywhere near the price.
EDIT. I stand corrected. As per the following post, these can be milled flat as required to make them flat tops, so there is even more versatility here which makes them an even better bargain.