Billet Nissan SR20 block that drops in like the factory one

The Blueytech SR20 is a billet 6061-T6 aluminium engine block for the rear-drive Nissan SR20, modelled on the S15 block. It keeps the factory outside shape, so the stock parts bolt back on.

What stays stock: the front-cover oil pump, the spin-on oil filter and dipstick, the wet-sump pan, the water pump, and the OEM M11 head bolt pattern. There's no external pump kit, no remote filter, no electric water pump and no head re-drill.

What changes inside: a closed deck with dry land between the bores, so no water sits between the cylinders. The water jackets wrap the valley and the outboard sides. Ductile sleeves. Four-bolt mains on the three centre webs, two-bolt ends, and a one-piece bolt-on ladder. Steel thread inserts in the head and main bolt holes.

Designed in Australia. Register interest and you'll hear first.

Bluey Technology and Design is Beau Ayres, a boilermaker and trained product designer in South Australia. He designs the parts and he knows how they get built. The billet SR20 block is the first product.

BT–SR20

Nissan SR20 billet engine block

A drop-in RWD SR20 block cut from 6061-T6 aluminium. The mesh on screen is the design model — orbit it, cut a section, then register interest.

Price on application. No card taken here.

01 · Drop-in envelope — S15-class RWD SR20; stock wet sump, front-cover oil pump, water pump, filter/dipstick — no external-kit detour.
02 · The real architecture — Closed deck, dry land between bores, ductile sleeves. Four-bolt mains on webs 2–4 (ends stay two-bolt). Separate bolt-on one-piece ladder. Steel inserts on OEM M11×1.5 head pattern.
03 · One quote — Tell us the car. We price the engine block. Horsepower claims wait until the engine is yours.

6061-T6 engine block specs

X · cross

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Y · height

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Z · long

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Envelope of the design model, seated upright.

Keys 1–5 snap the view. Brackets nudge the cut.