3rz supercharger info

So I've been looking around to fab my own kit for my truck, but the only ones I find are on LCEengineering, I am budgeting for this kit, I love the 3rz but I feel like it lacks power, I know a 5vz swap is always a option but I love the simplicity of the 3rz engine, and I feel as if boost for it would be awesome, now here's my question, from what I've gathered the TRD/Alpine is a m90 for the 3rz and the lower intake manifold looks to be for a m90, does the stock upper intake manifold fit the m90? And if not does anyone know where to locate the upper intake manifold for the supercharger? Just looking for info on this, as I have a 03 gmc Sonoma as well and never realized how slow the 3rz actually is haha

 

I don’t have any useful information to assist apart from saying, a supercharged 3RZ is still slow AF. Don’t expect a night and day difference between NA and SC.

If you resides in a state that has no smog, consider doing a UZ or LS swap. Even a 5VZ swap will be gutless IMHO. The price tag of the SC and supporting mods can probably pay for three quarters, if not, the entire swap of the LS and it’s definitely on the cheaper side for the UZ swap. I’ll go with the LS3, at over 400HP NA.

 

My only thing is is yeah I can do the LS swap, but I'm a huge fan of the 3rz, it's an option for sure, im not looking for huge power gains, just a little more than what it has, I love my engine I have, which is why I never bothered to drop a larger engine in

 

I am unfortunately one of the folks who've purchased a supercharger for a 3RZ and can attest that they aren't all they're cracked up to be. In fact overall they're still pretty slow even at 7psi. The TRD/LCE/Alpine unit is an MP62 not an M90, if it were an M90 it would be more appropriately sized for the engine and make less heat for the same power gain. I'd personally go with a turbocharger on the 3RZ, it likes boost well enough and even with a 2RZ on 14psi we squeezed out 316hp and 338lbs of torque at the wheels.

5VZ likes boost though... 400 crank HP NA is cool for sure, but for less than that swap I've boosted my 5VZ to 405hp and 482lb at the wheels, so I'm still in support of the turbo kit on the 3RZ as I know it can provide plenty to solve the complaint of no power.

 

Good info, the turbo has always been an idea, but i always have stopped myself from doing so due to me using lower rpms in my truck then higher

 

It's all about sizing, a GTX3071 ceramic ball bearing turbo with a .82AR housing spools up quick, in fact the turbo damn near never shuts up on a 3RZ haha always a little whistle going on. I would say don't be afraid of revving a 2 or 3 RZ out, it makes them fun. But this turbo is responsive enough that around town it's in the power pretty good, don't have to drive it like a race car.

 

Definitely a option as well, another thing that sucks with the turbo kit for the 3rz tho is welding onto the oil pan, i have been looking for a fitting almost like an expansion plug for the drain line, as getting oil pans welded here in PA are expensive

 

Could always drill the pan and use a sandwich bung...

$12 Etersec 315-04301-010 10AN Turbo Oil Pan Oil Return Drain Plug Adapter Bung Fitting No Weld 31504301010 Replacement

https://www.amazon.com/Etersec-315-04301-010-Adapter-31504301010-Replacement/dp/B0DG5FHDPD

 

Something like that would work awesome actually, think I can get the pan down far enough to get a wrench in there without filling dropping the pan by chance?

 

Possibly... I don't know much about your RC 6" lift but if it created some room between the diff and the pan then you might stand a chance at it. But if you have even 4" dropping the pan is pretty easy on these.

 

I've had it off once before for replacement, was a bit of a pain I had to drop the diff down, not removed just where it bolts into, but I definitely could do that bung, I might look into that honestly

 

Definitely turbo the 3RZ if you want more power. I've had both a LCE supercharged and custom turbo'd 3RZ and the turbo setup was a night and day difference better. As mentioned above, get a turbo that spools earlier on for more useable power range. It will make that truck so fun to drive.

 

Definitely, I'll probably go turbo then, the 3rz can handle 5-6 psi no tune correct? Or will i need to locate a Dino near me

 

It will need some sort of tune to run ideally but you can scrape 4-5psi on the stock ecu okay it just won't make as much power as it could. If you decide to install an aftermarket ECU (Haltech preferably) down the road I can help you get all tuned up, no dyno necessary

 

Ill definitely check into ecus as well, just don't wanna overload the engine, this summer I'm planning on pulling the head and doing the head gasket and new studs for it

 

Tunable ECUs are totally worth it, I can help you get a good deal on a Haltech setup as well if that's the route you'd like to go, we've had great success with them. You don't have to worry about overloading the engine really, they're quite stout. What kills them is poor tuning that leads to detonation and prolonged lean burn in boost. But we've built two of these engines in the last couple months, they're a treat to work on. Just finishing one up right now actually...

 

I ran 8psi on stock ecu with pink top injectors and a 3” FMIC. I dyno’s it and it said it was lean up top but my wideband said it was good. 7-8psi good with no tune. You could probably run some oside tiger 330cc injectors on the stock ecu at 8psi and be good.

 

those motors can handle power?

 

Decent. Mine made ~225whp on pink tops, 8psi and not tuning. Basically close to 100% increase.
Some dude in Australia made just shy of 400whp on a fully tuned and boosted stock motor