Boosting a 2.7 3rz

Hey, I’d like to potentially boost my 3rz and I’m curious if should run a turbo or supercharger? What are some good kits or should I do the fitting and fab myself? I use the tuck as my daily and do some light 4x4 but nothing crazy. Just wanna get a little more out of my old truck and I’d only run minimal boost so probably like max 5psi. Would I require a standalone? And if so what is good budget friendly standalone? I also found supercharger kit for a 3.4L wondering if that could work with my engine?

 

SC will be the easiest with minimum maintenance and management. No, a 3.4 SC will not integrate into a 2/3RZ.

 

Cheers good to know! Would I require a standalone for a SC?

 

No, a factory charger will not require an engine management. A turbo charger will

 

This was just talked about and might help some, also the dudes in this thread know what’s up..

https://www.tacomaworld.com/threads/3rz-rockcrawler-turbo-build-questions.851830/

 

If you’re looking for low boost, I would run a charger vs turbo.

 

you should not....

 

Thanks for all the quick replies! I’m definitely looking into a SC now opposed to a turbo. Any decent kits I should check out?

 

@slater what is bad about running low boost on a engine made to handle a SC?

 

truck is a 1997 with how many miles on it?
My 2 cents, it will never be a race car,
youre adding more stress to it & drama, leave it alone....

it wont be turn key, you will be tuning it one way or another, fighting pre-ignition / pinging, etc....

 

I'm not an expert here but the sentiment around the forum (from folks with hands-on experience with this stuff) is that the 3RZ supercharger is hardly worth its weight and parasitic draw. It's the only option for boost if your truck has to pass CARB inspection, and it's the simplest option if you want bolt-on boost, but if you don't have either of those constraints, a turbo seems to be a much better bang-for-the-buck.

The folks in the thread linked above here are the experts on boosting these trucks, I'd take their advice over anyone else's, @Speedytech7 and @2RZNoShi1 in particular. They've helped several other folks build and tune their boosted setups already.

@BartMaster1234 has a supercharged 3RZ and can tell you what it's like to own/drive one.

 

The 3RZ/2RZ superchargers designed for these trucks are undersized, and perform very poorly. To see any noticeable gains - you’d need go for a standalone tune, smaller pulley, methanol injection, bigger injectors, the whole nine yards.

I did all those things and it was still incredibly underwhelming. A proper turbo with a proper tune will get you much farther, achieve more power, and will be considerably cheaper (in addition to being able to run 87 octane instead of the 91 with the supercharger)

 

Thank you! This means a lot to us! As far as low boost supercharger vs low boost turbo, if you can run stock fuel on the charger, you can on the turbo. The biggest advantage to the turbo is ability to easily keep the charge temperatures way down, and keep boost out of the danger areas(low rpm high load) where you will have the most potential for knock. Turbo is a little more time intensive to install and set up, but gives a lot more for the same amount of stress on your engine. I would have no issues with pretty much any decently maintained 2/3rz running 8-12psi on a standalone with supporting mods, and I doubt it would cut the lifespan of the engine by much. If you go boosted and don't do supporting mods, then you won't have any head room at all, and there is always some risk using the factory ECU. Haltech is an easy drop in and go setup, it's very easy to remote tune and get dialed in(most of the rigs I have tuned have been safely drivable on the base tune so you aren't down while the tune is dialed in over a week or two). You can probably put together a turbo setup with haltech for a similar price as the supercharger, maybe 1000$ more, and have a solid, powerful, reliable set-up. If you have any in depth questions, feel free to message @Speedytech7 or myself any time, we are happy to help!

 

See

 

If it helps, this was my 2rz pickup on 15.5psi and pump 92, and I didn't turn it down except to mess with running 89 and 87 octane fuel. On the haltech, I was safely able to run 10psi on 89, and comfortably run 6-7psi on 87 with appropriately toned down timing without worry.