JSBlueGuy

I apologise for the typo above, emotions was meant to be emissions.

Does anybody know of anybody who has run the EPA gauntlet with an RB30DET and passed? I understand that it can't be done with a skyline but have any other vehicles passed an EPA emotions test with a twin cam RB30? Regards, JSBlueGuy

So a hybrid RB30 would not be an easily viable option when compared to a 25 or 26 as a emission test is mandatory.

Sorry everyone for the long break, I've been considering my options. If I were to install any RB (25, 26, 30, 30/25) would I need to be emissions tested as the engine was never oem installed in the car or would a stock RB (no head swap) with all stock emissions equipment be satisfactory? Thanks anybody for your replies.

When they stopped you for a breathalyser test and they inspected your car did they only look inside the passenger compartment or did they also look under your bonnet too? Regards, JSBlueGuy

Thanks everyone for their inputs, I really appreciate the enthusiasm of your responses and it highlights that you're all very passionate about helping other fans of Nissan. When getting stopped by a police officer do they check the engine numbers and such or do they only check the appearance of the engine? What extent do they go to when checking that everything is in order? Preferably, I would like it to be legal although larger injectors, boost controller and a fuel pressure regulator will be used. If an obscuring valve cover were be used would they be able to do anything as it covers the head so much that it is not known with certainty the head being used? Thanks again everyone for your replies, it's very much appreciated. Regards, JSBlueGuy

If I were to install an RB30E and then later install a twin cam head would I need to get an EPA certificate again or would the existing one still remain okay?

Thanks admS15 for such a quick reply. Do you think an RB25 or RB26 would be a better option? I initially chose the RB30 due to the availability, strength of stock components and the extra torque and power associated with a large 3L. With my goal being only around 400whp/300wkw when all done and dusted the RB30 seemed like the ideal engine but with all the extra hassle involved would a smaller RB be a better choice?

240z with an RB30DET, Vic roads registration issues Dear Sau Community, I am planning on swapping an RB30DET into a 240z. I was wondering if anyone can see any blatant breaches of any VicRoads or Epa laws? I have read on here a Skyline with an RB30DET is illegal due to a modern Skylines emission standards and how it is a larger engine. I see the reasons that were explained there but do they still apply to a much older 240z? I plan on getting an RB30E engine block and replacing the head with a twin cam one from an RB25 skyline. Due to the engine being newer, having EFI, possessing double the valves, crossflow design and a better spark plug position it would be much more environmentally friendly than an older carburated engine despite it being 0.6L bigger than the L24. Does anyone know if the EPA has an issue with this? Maybe some turbocharging action could come later but for now, the swap is the biggest issue. It would also be very much appreciated to hear from anyone knows someone or has done it themselves who has tried and either failed or succeeded, your knowledge on the topic would be a great help. Also, anyone who has a completely legal RB swap in an S30 would be awesome too. I wait for your replies with bated breath. Regards, JSBlueGuy