Warning on FI 2UZFE

Lextreme · #1 (**permalink**) 03-26-2006, 01:26 AM

Its nice to drive a fast truck or car. However, the Toyota Tundra V8 (2UZFE) was not meant for forced induction like STS turbo or TRD supercharger. I have personally seen 4 2uzfe blocks had broken rod or rods and destroyed a complete block. Even just natural aspiration could cause that too. I pretty sure you have seen this. With Wayne's permission, here is the 2uzfe destruction. The 2UZ rods are very skinny and its not made for FI or abussive type of driving. One of the cheapest upgrade would be using the 1uzfe rods. They are dirt cheap and slightly better then the Tundra rods. I have build couple of 2uzfe and 3uzfe engines using the 1uzfe rods. The 1uzfe rods are good for about 600-700 bhp and 3uzfe is about 450-500 bhp. Of course the best would be using H beam rods.

Once again, if you are running FI on your truck, please becareful and drive with caution. Constant boosting will lead to rod failure. Have fun and enjoy the ride.

J-man · #2 (**permalink**) 03-26-2006, 01:41 AM

wow, thats crazy. I wouldnt be surprised a blower destructed these v8's as under full boost theyre pumping about 260* +temps in the motor. Now a intercooled turbo with the correct size injectors and a timing controller would be a world of difference than that of a stupidcharger. I have a blower on my tacoma and am ripping that thing off asap. They suck compared to properly sized and built turbo applications. Thanks for the info you reported. Update when he gets it all done. Id really like to see how it comesout thx.

4.7-4V · #3 (**permalink**) 03-26-2006, 07:49 AM

Good info.

The stock 2UZ rods are fine for everyday truck duty. Nothing has changed in 70+ years of hotrodding. If you want to play, you gotta pay.

There's no such thing as free horsepower.

42GAMI · #4 (**permalink**) 03-26-2006, 08:41 AM

thanks lex for all the hard work. you are da man!

looks like the best choice for a cheap upgrade is to use the 1uzf rods in the 2uzf motor. in your opinion, how much HP do you think 1uzf rods can take? im not looking to make crazy HP, but i think somewhere between 300-450 on the street is reasonable for daily commuter.

can the 1uzf rods take daily abuse in that HP range or do i need to drop the serious cha-ching for carrilos?

what about converting SBC rods to do the job? is it cost prohibative to modify SBC rods? would i need custom pistons to go that route?

sorry, im not trying to jack this thread or stray from the subject.

cowboy bebop · #5 (**permalink**) 03-26-2006, 09:50 AM

SBC rods themselves are not cost prohivitive, however machining the rods, and crank add siginifigantly to the total cost. Plus there's a whole whole PITA factor. Consider that Pauter rods are about $1350.00 for all 8, and the early rods are dirt cheap.

FWIW, I have an early 1uz rod here, and a 2jz-gte rod. They are similar in construction. Very stout. Now I'm not preporting that that early 1uz rods can withstand a 4 digit HP blast as the 2jz rods can, but they are stout enough to handle the daily driving supercharged Tundra applications.

The Tundra 2uz-fe routinely runs 5.5lbs of boost, and does it safely with proper fuel and timing control.

For pistons, there are -33cc dish J&E pistons available on a custom basis. Ross also carries them for the Tundra. Call Pat at Ross, he's a good guy with some intereesting stories.

Eric

theyotaguy · #6 (**permalink**) 04-02-2006, 01:09 PM

There are so many aftermarket companies that manufacture connectiong rods in-house that the need to adapt a rod from a different engine is no longer necessary.Just look at all the Chevy,Ford,Chrysler,and Honda engines,transmissions,and diffs that can be built fron scratch without a single OEM part nowdays,as opposed to having to reverse engineer or make machining compromises to make something else fit.