The Official 3RZ Knowledge and Database Thread

[potter85]

can i run the t 3rz housing with my g54 to get me around for now till i find a w56? will it adapt like that?

[lowtideride]

I am in the middle of wiring a 2rz up. So far the biggest pain in the butt has been removing the wires from the plugs.
Is there some sort of trick to removing them cleanly?

Thanks...
-Al

[*ROKTOY*]

can i run the t 3rz housing with my g54 to get me around for now till i find a w56? will it adapt like that?

Yes you can.

[potter85]

oh right on thanks for the advise man... super stoked now

[bsi yota]

 gonna order an electric fan. should i get a kit for the the original 3vz-e or for the 3rz and make my own mounts

[Steve_925]

gonna order an electric fan. should i get a kit for the the original 3vz-e or for the 3rz and make my own mounts

just get a universal 16" and mount it with zip ties(not joking)
mine works fine

[bsi yota]

is it pretty simply to wire up the thermostat and whatnot? ill just make some tabs for it, zip ties dont cut it in on a desert application  how much do they cost typically?

[potter85]

soo just got my g54 mounted to my new 3rz and am wondering how many people have shorted out a computer.... i am really scared that if i attempt the wiring i am going to ruin my computer

[lowtideride]

I am in the middle of wiring a 2rz up. So far the biggest pain in the butt has been removing the wires from the plugs.
Is there some sort of trick to removing them cleanly?

Thanks...
-Al

Ended up getting two different size Awl's and a Terminal Pick and it's doing the trick

[Steve_925]

just thought i would ad this as my opinion. please coment if you think differently as this is just my experiance.


no one talks much about the 2rz compared to the 3rz.
i have tested my 2rz out thoroughly and can tell you that it is not as good as people think. most people talk very good about the 3rz and think a few hp and ft/lbs dont mean much, they do. the 2rz lacks the torque and 17 ft/lbs of torque when your onlytalking a little over 150 is alot. i havent had one problem with mine im just saying it definatly lack power and it would be well worth it to spend the extra for a 3rz.   

[DieselD]

there are alot of factors to each engine swap its really hard to compare. for each swap there are different years of engine, different setups of rigs they are going into so its almost impossible to compare the two. the biggest question is to ask yourself if its truly worth the extra cash. most engines are going for 1k-1500bucks for just a 3rz and some associated parts. I got a whole truck for 1k (2rz) with 96k on it. sold a ton of parts, scrapped the truck and might only have 700-800bucks invested after buying swap parts like oil pan, clutch, belts, hoses etc.  I couldnt even touch a compareble 3rz for that and I shopped for about a year. its still far better than a 22r or 22re in the power department. sure a 3rz is the first choice for many but there are lots of good deals on 2rz out there that can offset the power difference in the cost department. A few simple mods to the 2rz is likely to get it pretty close to a 3rz.

[potter85]

i get what you are saying man....
i paid 400 for my 98 runner donor truck and am parting the truck and keeping the 3rz. so i am not spending a ton of cash just because it is a 3rz. i just got lucky and stumbled over one.  

[DieselD]

you are the expection to the rule there. smoking deal no matter what running engine was in that thing

[boggerunner]

i got a compleate wrecked 96 taco for $800, and sold about $600 in parts off of it, so im into my 3rz swap for about $500 total after buying a new bellhousing and misc parts.

[Steve_925]

i get what your sayin DieselD, what im saying though is that not very many acnolage the difference once they acually do the swap so i thought i would share my experiance so far. personally if i could go back i would have spent the extra money to get a 3rz

[DieselD]

I do appreciate it, I searched alot before getting into my swap and your right, you dont hear about the 2rz. I hope to give result when mine is done. might even be able to compare to some locals with a 3rz too and see the difference first hand. Ill post up what I find. mine is a trailer queen and rarely sees the road unless its between trails.

whats your rig weigh? before cutting my cab and tubing it I was about 3900lbs with driver and loaded with gear/fuel

the other nice thing is you can always swap from a 2 to 3 down the road without too much effort since most of the stuff  is the same if it turns out your not happy with the power output.

[87pickup]

Any of the rz motors are hard to find here in AZ. All the smoking deals seem to be had in California but i have never seen a 3rz in a junkyard here in AZ. I have only seen one 2rz and only found one wrecked 3rz Tacoma for $1500. I'm sure plenty of people have found 3rz for $400 but those deals are few and far between and in my opinion not worth waiting for. And in all actuality if i did it again i would swap a 3.4 5vz. My 3rz is certainly not a rocket ship and i think i could do a 3.4 swap for not more than what my 3rz swap cost me.

[TacoRunner]

no one talks much about the 2rz compared to the 3rz.
i have tested my 2rz out thoroughly and can tell you that it is not as good as people think. most people talk very good about the 3rz and think a few hp and ft/lbs dont mean much, they do. the 2rz lacks the torque and 17 ft/lbs of torque when your onlytalking a little over 150 is alot. i havent had one problem with mine im just saying it definatly lack power and it would be well worth it to spend the extra for a 3rz.   

To all those looking to do a 3RZ or 2RZ swap. Pay careful attention to the statement above. This is a very accurate and truthful statement. I've done many dyno test, with these motors, all trying to get more torque from them. And believe me when I say 17 ft/lbs is a hard thing to get from a 4 banger. The 3RZ is a big enough difference from 2RZ that I very much recommend waiting for the right 3RZ. Honestly if this were a V8 it would not matter which one you bought, but with such small displacement to begin with, every cubic inch is critical. Most of us are doing this swap because we want more power, and 8hp and 17 ft/lbs is a big difference in the world of small motors. Dont short yourself. Do the swap one time. Go with the 3 not the 2.

[Steve_925]

I do appreciate it, I searched alot before getting into my swap and your right, you dont hear about the 2rz. I hope to give result when mine is done. might even be able to compare to some locals with a 3rz too and see the difference first hand. Ill post up what I find. mine is a trailer queen and rarely sees the road unless its between trails.

whats your rig weigh? before cutting my cab and tubing it I was about 3900lbs with driver and loaded with gear/fuel

the other nice thing is you can always swap from a 2 to 3 down the road without too much effort since most of the stuff  is the same if it turns out your not happy with the power output.

im 3600 lbs unloaded. it works ok for what it is(a trailer queen) but it kinda frustrates me when i have to put it in lo lo to do somthing thats not super hard.

[Steve_925]

To all those looking to do a 3RZ or 2RZ swap. Pay careful attention to the statement above. This is a very accurate and truthful statement. I've done many dyno test, with these motors, all trying to get more torque from them. And believe me when I say 17 ft/lbs is a hard thing to get from a 4 banger. The 3RZ is a big enough difference from 2RZ that I very much recommend waiting for the right 3RZ. Honestly if this were a V8 it would not matter which one you bought, but with such small displacement to begin with, every cubic inch is critical. Most of us are doing this swap because we want more power, and 8hp and 17 ft/lbs is a big difference in the world of small motors. Dont short yourself. Do the swap one time. Go with the 3 not the 2.

have you messed with the exhaust on the dyno. testing it with a very open system and a smaller sytem. i just went from about as close to straight header you can run to a 2" system. the open cleared out and reved up really fast, but the smaller exaust definatly has more power

[TacoRunner]

have you messed with the exhaust on the dyno. testing it with a very open system and a smaller sytem. i just went from about as close to straight header you can run to a 2" system. the open cleared out and reved up really fast, but the smaller exaust definatly has more power

I have, and with the short open exhaust the hp goes up and the torque goes down. I've also tried a few different headers and even a cam gear & cam.

The cam gear gets a few extra ft/lbs and the cam get some extra ponies. But the headers have been difficult, in that most of them dont do much of anything until they have been combined with other mods. Most of the headers I've tried were shorties, I will be testing some long tube versions.

[DieselD]

im 3600 lbs unloaded. it works ok for what it is(a trailer queen) but it kinda frustrates me when i have to put it in lo lo to do somthing thats not super hard.

sounds like you need a v8 anyway...wheeling a 4banger is really not all about hp numbers but more about reduction. I almost always run around on the front case at 2.28. Its always nice to have more power but then you get to the point of needing bigger and badder drivetrain to keep up. If I wanted big hp I would be swapping a v8. with any upgrade it is never enough of course.

also if you want to compare numbers look at what the stock 22re makes in power and tq then compare to either rz engine. even the lower number 2rz is an impressive upgrade over the 22

I agree with everyones opinions here and most make very valid points. the key is to review your personal expectations in a motor swap, use of vehicle, avaiable parts etc and make the decision based on those not others opinons on what you should do.

[87pickup]

i think the 2rz will be a huge upgrade from the 22re and will serve your trailer queen crawler quite well. I never have tried an obstacle and had to shift it double low because of lack of power. I more so shift it in doulbe low because on certain climbs in table mesa i could get in trouble quick not being in double low.

[TacoRunner]

sounds like you need a v8 anyway...wheeling a 4banger is really not all about hp

True enough, but wait till the next issue of 4WDTO and you see what I mean about torque numbers.

[Steve_925]

sounds like you need a v8 anyway...wheeling a 4banger is really not all about hp numbers but more about reduction. I almost always run around on the front case at 2.28. Its always nice to have more power but then you get to the point of needing bigger and badder drivetrain to keep up. If I wanted big hp I would be swapping a v8. with any upgrade it is never enough of course.

also if you want to compare numbers look at what the stock 22re makes in power and tq then compare to either rz engine. even the lower number 2rz is an impressive upgrade over the 22

I agree with everyones opinions here and most make very valid points. the key is to review your personal expectations in a motor swap, use of vehicle, avaiable parts etc and make the decision based on those not others opinons on what you should do.
[/quote>

when i say i have to go to lo lo i mean im staling the engine in 1st gear with my 4.7 in low and somtimes even staling it in lo l0. i will admit im coming from a 3.0 wich all the BS aside was a very good engine to me(power wise.) so in my case i acually dropped power, but in building the truggy i wanted somthing light and small. i am happy with my 2rz i just wish i would have gotte4n the 3rz

[TacoRunner]

sounds like you need a v8 anyway...wheeling a 4banger is really not all about hp numbers but more about reduction. I almost always run around on the front case at 2.28. Its always nice to have more power but then you get to the point of needing bigger and badder drivetrain to keep up. If I wanted big hp I would be swapping a v8. with any upgrade it is never enough of course.

also if you want to compare numbers look at what the stock 22re makes in power and tq then compare to either rz engine. even the lower number 2rz is an impressive upgrade over the 22

I agree with everyones opinions here and most make very valid points. the key is to review your personal expectations in a motor swap, use of vehicle, avaiable parts etc and make the decision based on those not others opinons on what you should do.
[/quote>


when i say i have to go to lo lo i mean im staling the engine in 1st gear with my 4.7 in low and somtimes even staling it in lo l0. i will admit im coming from a 3.0 wich all the BS aside was a very good engine to me(power wise.) so in my case i acually dropped power, but in building the truggy i wanted somthing light and small. i am happy with my 2rz i just wish i would have gotten the 3rz

If I trailer queened my junk, then I most likely wouldn't care. But I drive mine in the sand, the mud, the rocks and most importantly on the freeway. Up hills. Up big hills. Like the Grapevine. I'd perfer not to have to keep down shifting up those big hills. Yes I'm aware its a 4Cly and that means, that I will always have to down shift when going up some big freeway hill. But going from 5th to 4th and then to 3rd, really sucks. I'd be really happy to stay in 4th with out having to hit 3600 RPM's just to maintain 55 MPH. No, I'm not looking for V8 numbers. However, if I were able to get 20 ft/lbs more than I got right now. Then WOW!!!!! That would do a lot for simple durability up those freeway grades.

So when I say the current shorty headers aren't producing much in the way of power, it's because I think for $450 I should get more than
2ft/lbs & 3hp. Personally I'd be happy as hell if I got 10 ft/lbs and zero hp. I'm not dumb enough to expect a 20hp and 15 ft/lbs upgrade from a header. But with numbers that I've experienced from the products out there. I have to think that more is certainly possible. It is these experiences with driving this 3RZ for nearly 10 years and with the difficulty in producing more power that has me urging people to buy a 3 and not a 2. If I new of a product out there that gave these motors 17 additional ft/lbs with a simple bolt on, I wouldn't be commenting on any of this. Like I said another 20 from the stock numbers would be great. Thats all.

[TacoRunner]

Sorry for ranting but you guys will see the numbers in the next issue. They aren't as good as I'd hoped.

[Steve_925]

Sorry for ranting but you guys will see the numbers in the next issue. They aren't as good as I'd hoped.

i know exactly what your sayin. it all makes sence

[potter85]

putting a v8 into a toyota is asinine.... One of the things that toyota has going for it is that there light.... really light. and people wonder why the front of there truck is sitting on the ground with a five inch lift... Because the springs are not rated for more than twice the weight.
Plus if you run a six or eight on its side the low side of cylanders are over inverted and fill with oil thus causing some problems. Long live the 4 banger.
It makes all the brosifs mad when you pass em up with a small toyota with a 4 cyl and there hi centered in there giant dodge that is covered in SRH stickers.... hahahhaha

[DieselD]

back to some tech....

here are my motor mounts.




those that say you cant run a mech fan...here is proof you can


still have to work out the fuel lines, exhuast, psc pump mounting and alot of small details.Im glad I parted a truck myself and kept most of the parts. so far I have used slave cylinder, clutch line and master cylinder, throttle cable, heater hoses, upper and lower radiator hoses, and planning to use the fuel lines. I would have had none of this if I just bought the engine and accessory's from a yard