2UZFE Rods

[Lextreme]

Recently I got few emails a week about the Tundra rods (2uzfe). Most people email me because they had failure on them. When this happen, the block and pistons are also damage. However, the two bolt main cap usually survived. For some of you havent open up or seen the pictures yet, here is a picture of the 1, 2, 3uzfe and a H-beam rod.

You can see from the picture above the 2uzfe rod (second from the left) is very skinny and small. I was told by my engine builder said those rods are good for 400 rwhp. Anything more then that will suffer destruction and especially worst if tuning is off too.

Recently I had an opportunity to make a rod/piston combo for a customer on his Tundra. This customer is only aiming for 500-600 hp he is doing this for insurance purposes. We installed and tested before shipping everything clear and rotate very well. I also included a set of Clevite rod bearings as a gift too. This customer will be very happy. If you look closely, offset is there too. They are direct bolt on the stock 2uzfe crank.

If you have a chance to visit any local junk yard or engine core exchange center, you already see the Tundra shortblock laying around with broken rod or rods. I am a regular at the above locations and that is all I find from this motor. If you are running supercharger, turbo or NOS in your Tundra, please becareful. If anything that goes would be the rods.

[Cujo626]

Recently I got few emails a week about the Tundra rods (2uzfe). Most people email me because they had failure on them. When this happen, the block and pistons are also damage. However, the two bolt main cap usually survived. For some of you havent open up or seen the pictures yet, here is a picture of the 1, 2, 3uzfe and a H-beam rod.

You can see from the picture above the 2uzfe rod (second from the left) is very skinny and small. I was told by my engine builder said those rods are good for 400 rwhp. Anything more then that will suffer destruction and especially worst if tuning is off too.

Recently I had an opportunity to make a rod/piston combo for a customer on his Tundra. This customer is only aiming for 500-600 hp he is doing this for insurance purposes. We installed and tested before shipping everything clear and rotate very well. I also included a set of Clevite rod bearings as a gift too. This customer will be very happy. If you look closely, offset is there too. They are direct bolt on the stock 2uzfe crank.

If you have a chance to visit any local junk yard or engine core exchange center, you already see the Tundra shortblock laying around with broken rod or rods. I am a regular at the above locations and that is all I find from this motor. If you are running supercharger, turbo or NOS in your Tundra, please becareful. If anything that goes would be the rods.

Will this help better my chances getting my 4.7 V8 supercharged?

[Sigr6]

Anybody know what kind of HP/Torque the 4.7 put out with the TRD SC?

Just wondering.

[LifeTech]

When doing a SC ...

The weak links on the 2uz is the piston connecting rods or valve pushrods??
Or both? Any other components to beef up.

The bone stock 2uz is not really a good candidate for boost from a Turbo or SC.
Might Cost prohibitive.
Boost that increases HP by 100 is destructive on an unmodified 2UZ as it appears
anyone???

I'm curious too.


Single Turbo Toyota Tundra

[shall36]

I don't think the valve train should be a problem as their are no pushrods.

I would think, and anyone chime in on this, that the big problems associated with SC or turbo is the already high compression of the stock engine. With a stock CR in the 10:1 ballpark there isn't much room to play with boost before detonation causes big problems (like broken piston rings, flat-spots on the rod bearings, or broken connecting rods).

We've had several variations on this whole discussion and there seems to be several general conclusions:

1. The TRD supercharger provides a reasonable boost in horsepower/TQ, but not nearly as much as a well-developed aftermarket system installed on a purpose built short-block. The $4k will net you about 100 - 150 HP? Add to the $4k another $500 to have the trans valve body reworked by IPT (which is really mandatory for any serious mods).

2. Aftermarket superchargers and turbos can make big power, but only safely if you drop the CR via dished pistons or a very thick head gaskets. More time and effort required to do this and it will require a Unichip or one of the other "interceptor" type tuning modules. Basically, more power requires more fuel. The stock ECM can't keep up (at some point, neither can the stock fuel pump and injectors).

3. Stroke the motor to build power with cubes. Big time $$$ and the tuning issues are still there.


Bottom line is that there are no real big power add-ons that are true bolt-ons. The TRD SC is the closest thing to that. Its relatively low power output was designed into that system (my guess is) to keep from breaking the connecting rods and transmission. Most of the guys talking about big power out of these motors are not willing to spend the $10K+ to make that happen. Think about it, you can go buy a MKIII Supra AND hot rod it for less than $10K. You'll have one heck of a fast and fun car at a fraction of what you would have in a 4,500 pound truck that was never designed to go fast.