Where would I get after market cast pistons though??????
I am planning on getting the pistons from Paeco in America has anyone used their stuff before??????

in my opinion:
for an all out racing engine, get forged pistons.
for a roadgoing engine, save some money and use cast pistons.

Okay so I will stick with the stock rods as they are more than enough for even the most powerful NA A15 motors.So should I get the forged flat top pistons then??????My A15 is near new so the bore is in amazing condition just like the rest of the motor so I was thinking of getting the pistons in the standard 76mm bore but with the compression at a healthy 10.5-1

Just get them peend and polishd for a little high RPM peace of mined

Quote:

as ddgonzal said in his post before you wrote this, the stock conrods are forged.
there are plenty of high output A15s which use the factory conrods.

Weight is the key, standard datsun A series rods are lighter than billets
H beam and many others.
The Hayabusa rod is suited for a short deck a12
not really an a14/15.
The hayabusa rods dimensions allow you to run smaller offset crankpin for
more stroke or offset crank centreline.

Do as DD said and save youself a fortune and run standard worked rods or
if you want to rev higher then the e15et rods with modded crankpins will
they give higher rod stroke ratio and 7mm offset crankshaft centreline for
better power usage as the rod is already past crank centreline where longer
rod combos have difficulty in speed. Do some research and dont spend big
money on what is not needed, in your case a heavier rod that makes no more power.
Have a look at some past links youll see standard cast mazda pistons and
other makes work very well with stock rods. Its all in the work and finish
done to your internals, speedway people and other datsun racers know this.
I suggest the e15et rods as they are 3.5mm longer, have smaller cranpin
which is essential to make extra power, have less weight for material
and strength of rod, allow stroking/destroking and offset crank centerline
as mentioned. Also cheap as chips.

My motor is normally aspirated so from what you are saying I should use the Hiyabusa rods.Why are they superior to after market CA rods????????From the photo that has been posted of the CA rod with the A14 rod on top of it looks very close in terms of size.

the reason i was suggesting the stronger rods from e15et or e15
for turbo and hayabusa rods for NA setups is because they are
superior.

Okay guys so if I get my hands on some CA18 forged conrod all I have to modify is the small end from what I have read????????Also the reason I want forged rods is that from what I have read on the site about the forged rods is that they are stronger and lighter than the stock items.I have lightened the fly wheel and crank a good deal so I would rest easier with forged rods.

Why not just use the stock A-series forged conrods?