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Aaron's '83 Mazda Cosmo [SPASTK]


sry_not4sale

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Soo... after much deliberation - backwards and forwards... death threats, etc...

I am sticking with the 12a Turbo.

I have collected a whole heap of bits now...

- Genuine 12a Turbo block

- 12aT exhaust manifold, and HT18S-BM (facelift) turbo (and some spares)

- Turbo oil lines

- 12aT intake manifold, t/b and top hat (plus spares)

- Series-5 FC3S t/b and fuel rails (plus spares)

- Bosch 070 pump (same spec as VL Turbo Commodore)

- Pair of 12at 720cc injectors

- JC Cosmo CAS

- FC3s and JC Cosmo power steering pumps/brackets

- Original 12at air box

- HKS "mushroom" air filter

- JC Cosmo leading and trailing coils

- ECU

The car will run a FreeEMS ECU (NZ made baby!)

The current plan for the engine is:

- 12at block, 12at front cover

- JC Cosmo CAS and coils

- Standard (ported) 12at lower intake manifold -> adaptor plate -> fc3s t/b -> adaptor plate -> 12at top hat

- Series-5 turbo turbo core, cut down turbine inside original 12at turbine housing. Either standard Series-5 compressor or a cut down T04 compressor wheel (I have seen this set up in a few magazines and seems to be a good compromise between top end and low end power).

- Standard 12at exhaust manifold (with maybe a spacer so larger compressor housing clears intake).

- 12at air box with big air intake cut out and HKS mushroom filter inside.

- Water injector pre (and maybe post) turbo, triggered at certain boost/intake air temp, with reservoir behind right head lights

- Standard fuel pump replaced with Bosch item, in standard position.

- 12at injectors in centre plate with new atomizers, and using the FC3S primary rail

The idea is to have a standard looking engine bay, but remove the intake/exhaust restrictions from the standard gear (hence the fc throttle body - should flow just over 50% more than the 12at t/b).

The other aim to modernize the engine bay as much as possible.

Included are a couple of pics of some of the parts...

FC3S fuel rails (primary bolts up to the 12at centre plate)

fc3s-fuel-rails.t.jpeg

12at throttle body spacer sitting on a fc3s throttle body - only difference between them is the size of the butterflies

fc3s-tb-12at-gasket.t.jpeg

12at intake (with fc3s tb)

intake-system.t.jpeg

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Came up with a plan!

New years resolution: Driving in May '10

Goals:

Jan: Get motor cleaned/painted/manifolds on, engine bay primered

Feb: Subframe painted and in, motor and gbox in, rad/water lines in, fuel system done

March: Engine wired, turning over on starter, ecu logging engine sensors

April: Rest of front end wired, engine ready to idle, front end reassembled

May: Engine running, dash in, suspension in, tyres, skids!

It's gonna be a busy 5 months!

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I have an old eeepc laptop with a 7" screen I am going to mount in the centre console. Will be handy for running the ecu tuning app, and can use for a stereo also.

eeepc-running.t.jpeg

Have got it running with just the bare minimum attached, and found an australian outfit that sells a kit to convert the screen to touch screen for $80AU which I think I will go for.

It will have a built in USB hub also, for using alternative input methods:

controller.jpeg

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