"Been a long time since I had a 22RE with a turbo, so when does the turbo kick in rpm wise? I don't remember. I have had about 7 variations of the 22R/RE and the only thing that it seemed to do really well in was the sedan (like Corolla/Celica) style cars. Since I have had so many in trucks and 4Runners with the 22R/RE, I just got burned out on the "slow" part, especially since I was living in the mountains when I owned almost all of them and the hills just killed me. Killed a couple of engines, too...
If I had a I was going to trailer or was designing with light weight in mind and didn't have to drive to the trails, the 22R/RE would be right on top of the list. Other than that, I have been on too many trail runs and some climbing trips where our speed getting to the trail was dictated by the 'guy(s) with the Toyota', generally meaning with the 4 bangers. I have also known many people who tossed a lot of money at getting more hp out of the little engine and weren't happy with the bang for the buck results.
And, for sure, the 3.4L swap, as with most engine swaps, is big bucks unless you can do all the work yourself. Luckily when I did the swap, I was in the process of building a 16,000sf mansion with one 3 car garage and one two car garage and no time frame on getting my swap done. I designated the 3 car garage as 'Pete's Place' (hell, I was half owner in the home...if you can call something that big a 'home') parked my heap dead center and worked on it on the weekends and after work. No idea how much time was involved in the engine swap itself as I was also doing a mess of other things to the heap, but overall, it was substantial. I would be hard pressed to do another engine swap (unless it was a one day 22RE/22RE in and out) where I am living now. I was happy to find out that my engine problems were electrical, not engine related for that reason. I would have either had to rent a space or hire it done, neither of which happens to be in the budget..."
It really depends on what turbo you choose. You can go with a small one, and it will be at full spool at 1500-1800rpm but it doesn't push much air, or a bigger one and it will fully spool at higher RPMs but push more air. For a 22re, unless you are going to get forged pistons or something and really try for high numbers, a smallish turbo should do fine. I was going to use the stock WRX one out my Subaru, which would be at full spool around 1800rpm in a 2l Subaru Flat4, so it should be fairly comparable for the 22re which is a 2.4l. Also, those ratings are "full spool" meaning its at its peak rate at that rates, but will start pushing air much sooner.
For reference, I've seen up to 275hp to the wheels out of a fully built 22re, but thats a "full on" build. Thats almost 200hp over a stock 22re engine to the wheels from Dyno sheets I have seen. You can expect to get 50-100hp gain with a more reasonable gain. That puts it very much in the realm of a Supercharged 3.4l without the URD kit installed.
The best option for the 22re though, is to go turbo propane. VERY simple, propane takes very well to Forced Induction, and engines love it since it propane burns much cleaner. Downside is you have to find propane providers wherever you a traveling. Gotpropange sells a kit, and they say with 15psi of boost, they get 264hp. For reference, the URD kit for the 3.4l is supposed to up the HP rating to 240hp and 260hp if you are lucky.
So in other words, its not an easy answer and there are a ton of different variables. I don't feel like I lack power anywhere but on the highways at speeds above 50mph. I'm sure a 50hp boost would change that quite a bit, and 100hp would change it a ton. Pretty sure that if I ever get a trail rig, propane will be on the short list of upgrades for my crawler.
Anyways, enough with the 4banger chat. This thread is about Bryan's soon to be sweet new engines. I was there when those heads got delivered and have seen the rest of the parts. Needless to say, that is going to be one super sweet engine. Throw a cage in the Rhino, and that will be one VERY capable rig. Bryan already styles up most of the obstacles and makes it look easy.
I did a lot of research and the AFR heads are about the best V8 heads out there. This design is good for up to 550 hp but have the best low end Torque on the market (I should get about 410+ ft/lb’s with my set up). They are fully CNC machined Aluminum and one of the only ones on the market that are CNC ported as well.
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