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54 mm Optical Trigger Wheel for Nissan L28ET or VG30E

5 out of 5 based on 3 customer ratings
(3 customer reviews )
54 mm Optical Trigger Wheel for Nissan L28ET or VG30E


SKU: TW_L28ET Categories: , Brand:


Convert your Nissan CAS to a more MegaSquirt-friendly arrangement with our bolt in optical shutter wheel!
This one replaces the ring of four slits with a 24-1-1 wheel that behaves like a 12-1 crank trigger. Then we added an outside slot to provide a cam sync where the 360 degree slot ring works. So you can use just the inner ring to get a rapid sync-up, or use the outer slot to allow for sequential injection or coil-on-plug. This is intended for use on the following Nissan motors, in alphabetical order.

  • L28ET (1982 to 1983; earlier L28s used a variable reluctor sensor)
  • KA24E (please check before ordering; some KA24Es may have used a 50 mm)
  • VG30E
  • VG30ET

It may also fit other Nissan, Mitsubishi, and Subaru applications. Look for a 54 mm outer diameter with a D-shaped hole in the center. Distributor equipped engines can gain extra resolution and more precise timing, while cars with coil on plug can now use MegaSquirt without having to add a crank trigger. Easy bolt on installation, just take the cover off your CAS or distributor, remove the rotor on a distributor, and undo the big Philips screw in the middle. Once you’ve got that, it just drops in.

Click HERE link for how to use this trigger disc with MegaSquirt.

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3 reviews for 54 mm Optical Trigger Wheel for Nissan L28ET or VG30E

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What are the benefits of using this trigger wheel over the stock trigger wheel?

  • When used with a MegaSquirt, this trigger wheel allows for more accurate timing (especially while starting) and cylinder identification. If you are having problems with the motor “kicking back” while cranking, this trigger wheel will fix them. It will also permit using sequential injection or distributorless ignition.

Do I absolutely need this trigger wheel when installing MegaSquirt on one of these engines?

  • No. MegaSquirt can use the stock trigger wheel if you are running a distributor ignition and bank to bank fueling.

Can I use this with a non-MegaSquirt ECU?

  • You will need to consult your ECU documentation or technical support to see if this pattern will work with your unit.

Questions & Answers

  1. 0 votes

    You can use either one. The sensor can work with several different voltage levels.

  2. 0 votes

    DIP switches 4 and 6 on, all others off.