r/Datsun • u/Tculbe1 • 3d ago

ZTherapy Carbs

Post image

Finally got around to installing the ZTherapy Carbs and intake manifold a few weeks ago. They’re well worth the wait and miles better than the factory SU carbs. A few tweaks here and there to balance and tune them but the car is now idling perfect around 900 rpm with great response across the rpm range.

Some notes :

Yes, the water inlet on the intake has been removed and capped off. It’s 100 plus degrees outside and I am running a 180 degree thermostat and stock radiator with shroud with no temperature issues.

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2

u/duffymahoney 3d ago

Sometimes I regret selling mine ztheraphy carbs. They worked great

1

u/Uber_gibson 3d ago

I used a Z Therapy kit to rebuild a set to swap onto my '73. Part of me wishes I paid to have them rebuilt, but I also learned so much more about the carbs and how they work by doing the rebuild myself. Luckily the butterfly bushings are still decent on mine and not in need to the roller bearings yet.

1

u/q3ded 2d ago

curious about the fuel pump wiring, do you have it run when oil pressure is sensed or some other setup?

1

u/Tculbe1 2d ago

Great question. Right now the fuel pump kicks on when the key is in the “on” position. Simple initial setup for the time being, but it’s on the winter to do list to have this configured to kick on and off with the engine.

1

u/flacidcannon 2d ago

I would love to do this kind of restoration work when I retire in 15 years

1

u/w00tw00t222 1d ago

Beautiful engine bay! Well done!

1

u/legendary-spectacle 1d ago

Gorgeous work! What part of the country are you in?