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i may have missed something but in doing some homework re piston selection I am struggling to find a source for piston weights.

So I thought I would start here.

Mahle

RB26 forged are 320 grams each. Part # NIS191405D16

RB25 forged are 343 grams each. Part # NIS232385I12

RB30 forged are 312 grams each NIS264405I05

Anyone with stock weights?

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Dunno. ACL is what used to be the manufacturing arm of Repco before the companies were split up. They are, technically the rightful inheritors of the Repco moniker as it relates to Formula 1 motors etc, not the local Repco outlet selling Chinese shit.

Anyway here are the quoted numbers for Ross Pistons:

ENGINE CODE RB26DETT

BORE 3.406

BORE(mm) 86.5

STRK 2.900

CH 1.191

CR 8.5

APPLICATION TURBO NITROUS

ROD LGTH 4.783

HEAD CC 70.0

DOME VOL 19

GRAM WT 355

PART# 99876

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Just be careful to try & confirm whether the rods include big end bolts or not. Those Argo rods appear fairly heavy.

Carillo

Pro-H 507g

Pro -SA 488

Pro - A 474grams

Note the first two are H pattern the last I section. They are (I understand) listed from heaviest duty to lightest duty. I am not sure if they include for rod bolts or not.

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