Seems to depend on the mood of the piston maker????????

I have been quoted $350 for the four pistons (plus initial purchase price). I will keep the club informed of the success or other wise of the mods.

Well I'm 150kg so I dont own a ute.

Thats 80mm RB20DET pistons not RB 26.
They are cam ground back to 78.5mm

Did you check the end gaps in the bore before fitting. If it was an old bore was the bore ridge removed before fitting the new rings?

NISSBITS
8-14 WILMER STREET CHC
03 3797525

COLIN LAMBERT had a good selection of SR's and CA's. If not there is always Eddie Hurst at 14 Paradyne place CHC

Its not the sort of thing that is normally meaured in a normal performance area. I can see the point of trying to get the data! I would be a damn interesting project!
What sort of thermo recovery system are you using, Di-electric?

I believe it is an MGB engine in steve Crombies sprite.

The A13 is still on the engine stand awaiting some parts for the head. I am changing the titanium valves for 214N in the interests of reliability.
The L16 engine has come out of my sunny coupe parts chaser and been swapped for an L20. Ive been sorting that out so I can come and have a run at Sandown.

Are you and Cam going there?

What DD says makes good sense. L will make more power but A is easie to fit.

Its still a BMC engine.

Thje L16 would be more reliable in the longer term as it has a stronger bearing set than the A series. it will take more abuse in turbo form.
My opinion only.