Yeah but you had a 4.0 at the start not a 4.5 right? That's totally different. You are gaining 3/4 of a liter which is a good jump and totally understandable. I don't understand going from a 4.5 to 4.7 though.
Builds 2UZFE swap into FJ80 - building - in progress (2 Viewers)
- Thread starter SuperRunner
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
I've never driven a vehicle - one with a 6 cylinder of equal specs to a V8 in the same vehicle - where the V8 version wasn't noticeably stronger! I'm not sure I can explain why that's the case, but it's invariably true. The other consideration is that the 2UZ will be MUCH smoother, and also leak-free, compared to the 1FZ.
Though similar in weight, there's a HUGE difference in driving my 80 vs driving my 100. The 100 rarely feels underpowered, while my 80 rarely feels like it has enough power. The 2UZ, with 328,000 miles, has never leaked a drop, while I don't drive the 1FZ if it isn't leaking, because that means it's out of whatever fluid!
Same displacement with more cylinders means it's easier to move the pistons. Higher revving usually. Imagine it at the extreme two cylinders versus 12 for example. The 12 is going to be much much smoother.
Ok, as long as your happy with your decisions that's cool.
jkeithw
Supporting Vendor
honestly, so you can use the 100 series transmission. That's the really disappointing part of the drivetrain, IMO. (but everyone gets randy about engines, so it goes)
I'm starting to look into this swap but the notion of of only 10 to 20 hp seems to be a big misnomer. It's also ignoring the area under the curve in which the 2UZ seems to have significantly better torque/hp curves throughout their entire range. I figure with a bit of calculus you could calculate the percentage increase of hp/tq under a curve to figure out actual gains.
Pre and Post Supercharger Dyno tests - Data - https://forum.ih8mud.com/threads/pre-and-post-supercharger-dyno-tests-data.238875/ (80 series) Look at the slee graph
Cat Back Exhaust Dyno Testing 100 Series - https://tlcfaq.com/main/2013/04/cat-back-exhaust-dyno-testing-100-series/ (100 series)
so even if you don't do a VVTI you're still gaining a significant amount of HP (30-40hp) and 60 more tq (just pure peak numbers). Which looks like ending up with a higher boosted supercharged LC with none of the fuel concerns. Someone can yell at me if I'm reading these numbers wrong. I'd imagine it is even better with VVTI (probably rivals a turbo LC)
Last edited:
Yeah, and my butt dyno concurs. I've driven both platforms and the 2uz is a completely different driving feel. On top of that, the 2UZ is going to have OEM and aftermarket support for spare parts a lot longer then the 1fz ever will.
Would I choose a 2uz over a 5.3 or even a 4.8 LS motor? Probably not because the $/horsepower gain isn't as nice AND the LS's are so much more tunable. Having said that, the demand for 2uz's is a lot lower so it still makes a suitable replacement for a blown 1fz. There's no way I would spend a bunch of money rebuilding a 1fz, that's for sure.
- Joined
- Oct 22, 2002
- Threads
- 168
- Messages
- 5,345
- Location
- Durango, Colorado
- Website
- www.durangomagazine.com
I'm confident that once installed my turbo'ed 1FZ will drop a 2UZ like a bad habit. 2UZ swap is uber cool, but given the choice I spent a lot of money on a 1FZ rebuild and turbo over a 2UZ or LS. I rode in a Slee 2UZ 80 prior to making the decision.
No argument here about that. A turbo'd 1fz is the cat's meow! But a dollar for dollar comparison just between rebuilding a 1fz (not turbo'd) and doimg a V8 swap, my money goes towards a V8 swap every time.
- Joined
- Oct 22, 2002
- Threads
- 168
- Messages
- 5,345
- Location
- Durango, Colorado
- Website
- www.durangomagazine.com
Correct, and the V8 should be a LS unless you simply want Uber Toyota cool factor. No way I’d go though the work for that level of power gain when you can have 100’s more.
My decision was for turn key options as my wife wanted me to spend time with her not the 80. The compromise was me installing the turbo. Having a parts truck engine rebuilt while I continued to drive meant only 3 days without my 80 for the swap. Now I just need to find time to do the turbo but life keeps getting in the way.
Paying for a swap meant potentially months without my truck.
A turbo from witsend is 6k and some people still don't have their parts. Sure someone can buy their own turbo kit but that still requires fabrication unless you do an ebay special... This also ignores a core problem with with the 1FZ given that lots of 80 series have well north of 200k miles and I'm not particularly thrilled at adding a turbo to that nor am I a fan of rebuilding that engine and transmission.
The LS swap is plenty powerful but I'm not a fan of Chevrolet products as a whole. It'll likely cost more as well since you'll need either a Marks 4wd adapter or just 3d modeling your own and getting a machine shop to build it. I don't care about getting a gazillion horsepower out of the engine anyways.
I only added a comment since people tend to be under the notion that the stock 1FZ has similar power to a 2UZ, it does not. This is/was a 2UZ thread so let's leave it at that.
Getting a 2uz VVTI with a 5 speed auto is a big interest of mine right now so I should probably reach out to superrunner and see if i can pick his brain.
Last edited:
This!
I realize that I am hopping on the train of reviving this old thread, so my turn. I am also in the beginning stages of a 2UZ swap for my 80. To specifically address the power issue for why swap in the 2UZ...
I own a Stock 2005 Toyota Sequoia, with 302K miles on it...it was wrecked in late October 23. I got my insurance payout and bought it back, and used the rest to buy my dream truck. A Factory Triple Locked 80 series. I had never driven one before, but had seen and been around them before plenty. I picked up a 94' with the 4.5 FZ engine. The speedo stopped working at 240Kish miles, from what I can gather around 2019, I was told it mostly sat around and occasionally driven for the better part of 2 years. I suspect it is likely at least 280K if not a bit more.
Now I had heard before that the FZ was gutless and drove like a dog, but all the torque you need offroad. However, the difference is staggering. Both had 33's on stock wheels. I can't imagine the LC wheels being too much heavier if at all. The Sequoia is heavier to start with, and has more miles. But it is so much more powerful. The difference is night and day. With traction control off, with the center diff lock on, I could still easily spin tires in the wet. PNW, so pretty much all the time. I don't think I could get the LC to spin tires if its life was on the line. The FZ just feels tired, and old. (To be fair it is 11 years older) but yeah.
I may have decided on a different swap (I really want to put a TurboDiesel in the 80) but I have my entire donor Sequoia so that is what I will be doing. I would like to start my own thread on here soon to document my swap. I have a couple other projects I have to button up before I start on it. So for now, the Sequoia sits in the driveway and I am daily driving the 80. I will be rebuilding the 2UZ and possibly the 750 since I will be pulling them well ahead of time and I'd like to freshen them up before the swap.
I own a Stock 2005 Toyota Sequoia, with 302K miles on it...it was wrecked in late October 23. I got my insurance payout and bought it back, and used the rest to buy my dream truck. A Factory Triple Locked 80 series. I had never driven one before, but had seen and been around them before plenty. I picked up a 94' with the 4.5 FZ engine. The speedo stopped working at 240Kish miles, from what I can gather around 2019, I was told it mostly sat around and occasionally driven for the better part of 2 years. I suspect it is likely at least 280K if not a bit more.
Now I had heard before that the FZ was gutless and drove like a dog, but all the torque you need offroad. However, the difference is staggering. Both had 33's on stock wheels. I can't imagine the LC wheels being too much heavier if at all. The Sequoia is heavier to start with, and has more miles. But it is so much more powerful. The difference is night and day. With traction control off, with the center diff lock on, I could still easily spin tires in the wet. PNW, so pretty much all the time. I don't think I could get the LC to spin tires if its life was on the line. The FZ just feels tired, and old. (To be fair it is 11 years older) but yeah.
I may have decided on a different swap (I really want to put a TurboDiesel in the 80) but I have my entire donor Sequoia so that is what I will be doing. I would like to start my own thread on here soon to document my swap. I have a couple other projects I have to button up before I start on it. So for now, the Sequoia sits in the driveway and I am daily driving the 80. I will be rebuilding the 2UZ and possibly the 750 since I will be pulling them well ahead of time and I'd like to freshen them up before the swap.
