Toyota 3RZ, how good are they!

[muttaburra]

Im guessing they are in Hilux/Hiaces all which hold crazy good resale value.

yes they are. as they are commercial vehicles they are normally driven until they stop. then replaced with another 1. rinse and repeat

[oxy]

Wasn't 2ofdem building a big HP one of these to put in a mightyboy?

[Billzilla]

Wasn't 2ofdem building a big HP one of these to put in a mightyboy?

A Corona but otherwise yes. I designed it for him on EAN Pro and told him it'd make about 800hp. He built it like I spec'd and it did make that power for real.

[Guido]

Did anyone ever actually see the motor in person?

[The Pupat]

Did anyone ever actually see the motor in person?

You make a valid argument.


Still keep waiting for someone to give the 13b boys a proper run for their money with a 3R in Pro Compact. Would be good to see the rotors get left behind like what happened in Pro Turbo. Would shut the filthy rotor bogans good and proper

[jimmy19650]

Just had to register for this forum to comment on how much I enjoyed reading this and tracking it's progression. Just bought a 3rz to put into my AE86 for something different. Hope I dont get abused or threatened if seen in public. I subscribe to many different forums, and I enjoyed reading this post more than anything else. Took a while, but well worth it. Well done boys. How boring would it be if we all thought the same. Looking forward to the next one. How about a 500hp Daihatsu 3 cylinder 1000cc with nothing more than 3psi of boost and no intercooler. I'll send pics when I build it by lunch tomorrow.

[Shifty]

Still keep waiting for someone to give the 13b boys a proper run for their money with a 3R

I love this thread. Time for it to come back to the top.

Yoshie.. do you realise the 3R is a 1.9lt engine from the early 60's? 50's, even?

I recommend this be pool-roomed.

[The Pupat]

Yoshie.. do you realise the 3R is a 1.9lt engine from the early 60's? 50's, even?

I recommend this be pool-roomed.

Oops, well they can try using one of those against a 13b as well. 3RZ might be a little more betterer.

[millsi]

ive only read the first page ang the last page, but surely with an air temp of 32c and using dry ice the intake temp would have been lower than 43c?

[Momus]

The initial dyno graphs figures in this thread are showing figures that it must be noted are highly unlikely.

The NA, ie at earth's atmosphere of 14.8 psi, output of a 3RZ is around 150 hp.
Pushing another 30 psi into it via a turbo can only, at a theoretical 100% efficiency increase the power in proportion, which gives 150 + 300 hp = 450 hp. At the output claimed the fucker would need to be taking nearly 75 psi absolute.

Supercharging to the approximate 3 bar absolute for 450 hp is no different to running the engine normally aspirated on a planet with an atmospheric pressure 3 times the earth's.

If the engine had extensive modifications and was making around 245 NA hp then
it would be possible but still extremely unlikely to get to the 740 hp with 30 psi supercharge.

Addendum. OK. I've read the entire thing and it looks like the base engine was a big dollar hotty.

[da9jeff]

I had thought that with a turbo an engine can run at >100% efficiency. IE a 3L 2jz making 1000hp+ at what? 40psi would support this wouldnt it? This would say that the NA 3RZ is hugely choked with stock emmisions gear etc.

Not sure if the above makes sence but im fairly sure your theory isn't correct either.

[Momus]

A 350 hp NA 2JZ with 40 psi at the inlet port could conceivably make 1000 hp esp if it had a chemical supercharge from highly oxygenated expensive fuel.

My statements about power production are not 'theory', they follow the laws of physics.

An engine is an air pump and the engines that make the most power are the ones that get the most air into the cylinder.

NA racing engines have straight, individual port runner inlet systems because they are the most efficient. Turboing an already 250 hp NA 2 litre to 1 Bar will get you a lot closer to 500 hp than turboing to 1 Bar a 125 hp engine.

Adding a supercharging system to an engine increases the total air flow but because of the associated extra ducting and conjivery, the power increase is not proportional to the increase in psi. There is always a pressure drop measured between the compressor outlet and the inlet valve- it will be lowest on optimised non intercooled installations, so no 100% efficiency.

The 1000 hp 1500cc F1 turbo engines of the 80's were high output NA engines with turbo charging (and jungle juice fuel) added. Nobody was trying to push 10 Bar- 148 PSI into a road motor; they were starting with well over 200 hp NA.

[JZK25]

In on 7. Lol.

[cheapracer]

New 2RZ and 3RZ's and HiAce/HiLux thingies are made 20 minutes from my home.

http://www.my-jinbei.com/en/

[Dave]

momus, you are a tard and should shut up