Toyota 4Runner 30 TurboD

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Description: This is gaining more and more traction on the Toyota 4Runner forums, thought i'd see what you guys think. Turbo KIT Intercooler Manifold Downpipe FOR 95 04 Tacoma 5VZFE 5VZ FE 5VZ Black | eBay

The more and more I think about this the more I think that it would be possible to run a dual-charged system, 1 supercharger 1 turbo. Think about it, the TRD supercharger puts out roughly 7psi with the stock 2.37" pulley, go to the 2.2" pulley, and that's another 1.5-2psi. Go down again to the 2.1" pulley and you gain another 1-1.5psi over the 2.2" pulley. That's now a max potential of 10.5 psi. The URD 7th injector CAN support that amount of boost.

Running the supercharger on the stock pulley (7psi) and running the turbo kit on low boost (2-3psi) should be enough for the 7th injector kit to support both the turbo and supercharger since the 7th injector adds fuel when you boost more, it should be a linear ratio of boost to fuel.

It is china made 100%. So got to keep that in mind, particularly for the turbo. Since it uses a standard T4 flange you can swap out the turbo for a quality unit though.

If it fits as it claims then it is actually a pretty good deal. Not the best design by any means but a lot better then some of the hack jobs I have seen.

Far as setting it up in a twin charged setup, DON'T. I looking into this very hard a few years ago when I considered it. Ran tons of math and came to the conclusion that it was simply not worth it at all.

The supercharger will end up doing most of the work and it is just not setup for that. It can bearly handle it's work load in normal trim.

You see the pressure ratio adds up in kind of a funky way until you understand it. So a few psi into the supercharger is a whole lot out of it. If you turn the boost on the supercharger down to the point it would be doing a reasonable amount of work it will do so little to help spool the turbo and rob so much power once it is spooled it makes no sense to use it.

Much better off simply getting a properly sized turbo. Should easily be able to spool at 2k if you get the right sized turbo. That is basically where the supercharger comes to life anyways.

I could go into all the math but just trust me, skip the supercharger, it is just not worth it at all.

3k rpm range depending on it's build quality. It is big enough to more then max out the limits of the transmission and maybe even engine though. Hard to know exact numbers with knock off turbos.

If someone wants to try this be sure to post a thread. Interested in seeing fitment as that is the biggest question I have about it.



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