L jet on 2L heads, how to fit Options

[rfinegan]

How are people fitting the Ljet intake manifolds to work with 2.0L heads? FWIW this will be on my 2056.

[ClayPerrine]

I have run L-Jet on a 2.0 engine. The runners are shorter, and you need longer hoses. That's it. It will bolt on and run.

Now I suggest three things.

1. Bigger throttle body. The factory throttle body for a 1.8 is way too small for a 2.0, much less a 2056. I used a 2.1 vanagon throttle body, and that woke the motor up big time. But they are getting harder to find, so the GoWesty throttle body is a good solution. It just doesn't look as stock.

2. Remove the snorkel on the air cleaner. The end of the snorkel is the same size as the stock throttle body. So the snorkel has the same restriction. If you really want to get radical, cut holes in the bottom of the air filter box. That will improve the airflow into the AFM.

3. Replace the injectors. Get injectors for a 1980 Datsun/Nissan 280ZX. Nissan used a license built copy of the Bosch L-Jet on them, and the injectors are slightly bigger than the stock 1.8L injectors.

Hope that helps.

[JamesJ]

I have run L-Jet on a 2.0 engine. The runners are shorter, and you need longer hoses. That's it. It will bolt on and run.

Now I suggest three things.

1. Bigger throttle body. The factory throttle body for a 1.8 is way too small for a 2.0, much less a 2056. I used a 2.1 vanagon throttle body, and that woke the motor up big time. But they are getting harder to find, so the GoWesty throttle body is a good solution. It just doesn't look as stock.

2. Remove the snorkel on the air cleaner. The end of the snorkel is the same size as the stock throttle body. So the snorkel has the same restriction. If you really want to get radical, cut holes in the bottom of the air filter box. That will improve the airflow into the AFM.
3. Replace the injectors. Get injectors for a 1980 Datsun/Nissan 280ZX. Nissan used a license built copy of the Bosch L-Jet on them, and the injectors are slightly bigger than the stock 1.8L injectors.

Hope that helps.

@ClayPerrine

Clay, did you use the stock 1.8 injectors with the larger throttle body prior to replacing with the 280ZX(FJ707) injectors? If so, did you notice a big difference?

I found two manufacturers of the FJ707 injectors: Standard Motor Products and Standard Ignition. Do you recommend one or the other or possibly a different manufacturer? Not sure why, but I found a $30 price difference(per injector) between these two manufacturers.

Did you cut the snorkel to it's base? Any photos of your airbox after cutting holes in it?

James

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