Comments on: Triple Mikuni Carburetors

By: Randy

Randy — Mon, 07 Jun 2010 17:53:53 +0000

Good Day. Are these engines stock? I have full bore Triple Mikuni 44′s (not running any outer venturis) in a 12.5:1 CR motor, forged slugs and Rods, 306 Deg, .595″ Lift Iskenderian Bump Stick, 10 lb Tilton Flywheel, Centerforce weighted Pressure Plate, 4 puck Copper Clutch, MSD 6AL Ignition, MSD Programmeable Timing Computer, MSD 8253 Ignition Coil and last but not least 150 HP shot of Nitrous from the 05040 Kit………. I run 150 Mains/ 190 Air Correctors/ 57.5 Pilots/ 40 Pump Nozzles……. for any info on these engines that I have worked on for over 12 years you can contact me at randyngfracing@yahoo.com or 868 735 7358

Throttle Bore Sizing:
cc/cyl x rpm
Square Root of: ——————- MultipliedBy .82
1000

Main Venturi Sizing:
cc/cyl x rpm
Square Root of: ——————– Multiplied By .65
1000

By: gavindoolan

gavindoolan — Tue, 23 Jun 2009 23:07:22 +0000

To be honest George I’m not sure as I’ve not set up the Triples on my motor yet. If you buy this book http://www.amazon.com/Modify-Your-Nissan-Datsun-Engine/dp/1931128049 it gives you relative sizes to use based on your engine set up. That should get the car running again and from there you can get it on a dyno to set the proper sizes.

All the best with it.

By: george Schiazza

george Schiazza — Fri, 02 Jan 2009 01:06:54 +0000

I have just recently tried to go through my old z and get it running again

I have a triple mikuni 44 set up but cannot get it to work right

Any tips on needle valve settings = pilot sizes,main air jets, main fuel jets etc. This is a long shot z is otherwise stock

thanks