Decided to say screw it and that the truck is getting boosted this year. Driving on the interstate at 70 and loosing speed due to hills and head winds (combined) is frustrating as I’m spoiled by the other vehicles I have that always have power and I just can’t stand having crappy passing power at 70 mph. A lot of this frustration probably comes from how heavy my flatbed is and causing the “lack of performance” in finding either the 3rz.
I debated for a long time between Supercharger or a Turbo and I just couldn’t bring myself to stomach the supercharger cost at $4k plus gauges, and it takes power to make power vs the performance of a turbo and having way more potential in the long term if I ever want more HP. The more HP ended up being the key for me as I’ve been talking about possibly acquiring a 4Runner to replace this truck so there more space when off road and for if/when the family expands, plus I have no interest in a 3.4 swap if I get a 4Runner. It’s either getting this drivetrain or I’m going away from Toyota to stuff that’s got better aftermarket support. Building Toyota stuff has gotten stupid expensive imo.
The ease of install of the supercharger, that the low boost is carb certified, and the fact that I want something between 4-8 PSI is almost what sold it for me but in the end I kept coming back to some of the comments BoostedKa on Tacomaworld said about his experience with Turbo vs Supercharger 3rz. So I decided to put together my own turbo kit for cheaper than LCEs and IMO better than their turbo kit. So far I’m looking at about $2800 compared to the $3250 for LCEs and my cost includes a gauge pillar, boost gauge, and AFR gauge.
Specs are a used GT3076
Compressor:
Wheel: 76.2mm w/ 56 trim
Housing A/R: .60 a/r
Housing Style: 4" anti-surge inlet w/ 2" outlet
Turbine / Exhaust:
Wheel: 60mm w/ 84 trim
Housing: .82 a/r Tial V band housing that’s cerakoted black
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The turbo will be water cooled with -6 AN lines running to the heater core hoses and it’ll get a -4AN feed line and a -10AN drain line. It’ll also get a 44mm wastegate set to 6 psi and possible 330cc fuel injectors as they’re within the 20% that the computer can trim, if needed. Expected spool is around 2500 rpm and if I’m not happy it’s where it’s at I’ll drop the exhaust housing to a .62 a/r
I’ll make my own downpipe and I’m debating between using stainless steel and buying the wire and gas or just using aluminized pipe to a stainless v band flange and calling it good for now.
I ended up going with a Future Fabracation turbo manifold that was actually test fit in the 84-88 Toyota body style. I like it because it angles the turbo and should help with fitting a 3” downpipe in the engine bay easier.
Quality exhaust manifold fabrication.
futurefabrication.com
I also got my drivelines ordered from Tom Woods. Rear is 39 5/16” .120” wall tube double Cardan joint and the front is their standard slip driveline that’s 33 5/8” double cardan as well.
The final touch i wanted to do to my dual cases was a set of NWFab shift handles. I’ll have to run an adapter for the stock shifter but with how good these look I don’t even mind.
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