Engine lineages – interesting history

[eb2fairmont]

No.

The repco brabham was derived form the BOP (Buick, Oldsmobile Pontiac) 90 degree all alloy v8. That motor wasn't a huge success, but they did drop two cylinders off it and cast it in iron to creat the 90 degree 3800 series v6 motors.

Rover brought the tooling and morphed it into the rover 3.5. Repco (under Phil Irving) brought BOP blocks for 14 pounds, resleeved the blocks and put on thier won cylinder heads to create the repco brabham motors.


The link to the 253 comes through formula 5000. Here holden 253 blocks were rebored and stroked to achive 5 litres capacity, as the wall thickness was better.

Holden launched the 253 first (as an economy minded motor) with the 308 replacing the chev 307. The Holden motor (as reported by Fred James the chief engineer) was always designed to go to 350 Cu In, but development on that aspect stopped after the first fuel crisis. Holden had also aimed to put injection on it back in the mid-70's, but ran into the recession and falling market share.

Now onto the stag. The dolly sprint motor was the basis for this engine. But Triumph decided that all the dolly components would work behind a motor with double the output. They also had impossibly long cam chains as it was ohc.

Now I bring this up because the dolly motor was sold to saab and used in the 900. SAAB later put their own design twin cam head on it.

And now the Austin B series......Datsun brought the licence to it and put it in the 1200 and 120Y. The Toyota 4F? and 5F motors in the 70's to early 80's corollas shared similarities.

Sorta like the landcruisers motor, which was based on a chev wartime truck engine until the update 80 series landcruiser.