4Y to 3RZ EFI engine conversion

Post by **kevsmall** » Sun Jul 01, 2007 11:48 pm

Have an 86 single cab Hi Lux 4x4 with the 4Y petrol motor. Would like a bit more power without going to a V6 or 8 conversion. Anyone know if the 2.7 litre petrol EFI is an easy conversion and whats required to get one going, assuming its not a bolt in job? Any problems around the bellhousing, clutch, gearbox area? Know anyone who has done one I can talk to about it? Cheers

Post by **Willy Hilux** » Mon Jul 02, 2007 9:09 am

3RZ-FE Pretty simple conversion. You will need the motor, Bellhousing, clutch and computer and harness off the engine. I bought mine for about $2000 with fuel tank and radiator thrown in. The fuel tank had the fuel pump inside. (3RZ fuel tank is longer but same bolting holes. You just have to move you round bar between the two chasis rails back.)

Cut off your engine mounts on chasis. Clean up and bolt to 3RZ. Bolt up gearbox with 3RZ bellhousing to original crossmember. Drop in 3RZ and bolt to bellhousing. Now weld engine mounts back on to chasis. Now the gearbox is in the correct place and everything still lines up.

Wiring the Computer is not that hard. You will need 2 relays. 1 for fuel pump and 1 for EFI. Can help with what wire goes where when you do it.

Hope this helps.

P.S. Easier with cab off chasis. Motor is close to the firewall on a LN65, But still fits.

Post by **kevsmall** » Mon Jul 09, 2007 10:39 pm

Thanks for that info Willy Hi Lux. Looks like most of that I can do myself. Will retain standard tank - assume my fuel pump will be OK? Will my radiator (just overhauled) be OK? Wont be running an Air Cond. Know where I can get an engine?

Post by **beebee** » Tue Jul 10, 2007 5:46 pm

kevsmall wrote:Thanks for that info Willy Hi Lux. Looks like most of that I can do myself. Will retain standard tank - assume my fuel pump will be OK? Will my radiator (just overhauled) be OK? Wont be running an Air Cond. Know where I can get an engine?

You can keep your tank but you need to run an external electric high pressure fuel pump (your 4Y had mechanical low pressure pump) and you radiator may be ok. Needs to have outlets @ driver top and passenger bottom.

Like Willy said, the rest of the conversion is just time, a little know how and some $$......

Post by **Guy** » Sun Sep 16, 2007 10:04 pm

How easy is this conversion from a 2l-t to a 3rz (stupid carppy ct-20 blowing up all the time).
Will is it possible to bolt up to the factory motor mounts on the chassis ?

I have driven a couple of 3rz powered lux's (4x2's) and quite like the power delivery you get with them.

What ratio's do the factory 4x4 3rz's run in the diff's ?

I figure by the time I finally hunt down and install a power steer pump and bracket for a 2l-t ($300 if I can find one), Re-co another turbo so there is $400+) etc etc .. I am still stuck with a noisy anceient POS 2l-T and wait for the next thing to break .. I am not even brutal on it .. but everything seems to bust so easily on this truck.

I have seen a few 3rz's sell recently for around $1500 with everything needed. Starter, alt, loom computer etc all there bar the high pressure pump for the EFI

Post by **Willy Hilux** » Mon Sep 17, 2007 8:52 pm

Should be no different than what I typed above. There is one on ebay for $1500. Looks like a good motor but down in Sydney. You could run a VL fuel pump but I rather running the one in the tank.

Post by **Guy** » Mon Sep 17, 2007 10:49 pm

Willy Hilux wrote:Should be no different than what I typed above. There is one on ebay for $1500. Looks like a good motor but down in Sydney. You could run a VL fuel pump but I rather running the one in the tank.

Thats the one I am looking at, I can get the motor transported for a 6 pack through my little bros work (Kohmatsu ship stuff all over all the time a 3rz is nothing for them) The guy is happy to crate up for me.

I currently have a 130 litre long range tank that I would like to keep, If i go ahead with this I will run a lift pump and a small surge tank before the efi unit (close to the motor) as I am to lazy to change all the lines to high pressure

.. and I have always wanted a bling alloy surge tank.

Post by **bubs** » Tue Sep 18, 2007 8:03 am

In my lux which is a LN60 2L Diesel 4 runner chassis I had to cut and move the mounts back.

I run an external VL EFI fuel pump, but will be setting up a surge tank shortly as I have problems once I get on to angles with less than 1/2 a tank of fuel.

I run 4.88 ratio diffs with 33's and seams a rev a little much, 4.5's for a street rig I reckon would be a better shot.

Buddy

Post by **d3m0n1c_4b** » Tue Sep 18, 2007 8:38 pm

hey, i'm pretty interested in doing a conversion such as this with my runner, you said it's a pretty simple conversion, just wondering if there's any place that would actually do this? would love to do it myself, but dont think i would be able to go without my runner for the amount of time it would take to do it myself.
so yeah, what you reckon? i'm brisbane aswell.

cheers, nick.

Post by **Guy** » Tue Sep 18, 2007 10:38 pm

bubs wrote:In my lux which is a LN60 2L Diesel 4 runner chassis I had to cut and move the mounts back.

I run an external VL EFI fuel pump, but will be setting up a surge tank shortly as I have problems once I get on to angles with less than 1/2 a tank of fuel.

I run 4.88 ratio diffs with 33's and seams a rev a little much, 4.5's for a street rig I reckon would be a better shot.

Buddy

Thanks, so I would need to cut the mounts and reweld (no bigged it have a welder and acess to someone who can wled properly .. I can weld but I would never do it on any parts that I could not afford to have fail)

So it's revs a bit hard with 33's .. well thats easy fixed with 35's

.. yeah I wish. My 4.5 centre is very noisy so I am running 4.8's out of my old lux.

Post by **Willy Hilux** » Wed Sep 19, 2007 8:32 am

d3m0n1c_4b wrote:hey, i'm pretty interested in doing a conversion such as this with my runner, you said it's a pretty simple conversion, just wondering if there's any place that would actually do this? would love to do it myself, but dont think i would be able to go without my runner for the amount of time it would take to do it myself.
so yeah, what you reckon? i'm brisbane aswell.

cheers, nick.

You'll Pay for it. Usually around $2500 for the conversion.

Post by **ottie** » Thu Nov 15, 2007 9:13 pm

can i do this conversion to my 86 runner?i have the auto with 4y efi motor.will the 2.7 bolt up to my auto?

Post by **ottie** » Wed Nov 21, 2007 6:53 pm

can anyone help on this???

Post by **Lux_89** » Thu Nov 22, 2007 9:31 pm

not interested in getting it but 2500 bucks including motor? or just labour..? id say labour b the sounds of things, its all bout time, thats the prob when its dd. im goin 1kzte or just tubo and rebuild my 2.8

Post by **locktup4x4** » Fri Nov 23, 2007 3:56 am

I'm in the process of putting a 3RZ in a 94 extra cab. We used the 3RZ bell housing and had Marlin build a W56HD and Dual Ultimate for it. I built new engine mounts and it going to have a flat belly so we weren't to concerned about the rear cross member. The engine is 1" away from the fire wall. And it is clocked to 86.5 degrees off of the plenum. The 3RZ is a great motor with lots of power.

Jason

Post by **bubs** » Fri Nov 23, 2007 8:31 am

ottie wrote:can i do this conversion to my 86 runner?i have the auto with 4y efi motor.will the 2.7 bolt up to my auto?

If it is a A series auto transmisison, then yes. Get the code off your vin plate for the transmission.

Post by **ottie** » Sat Dec 01, 2007 5:52 pm

its an a series auto so thats good.apart from the engine mounts to be moved what would i need to use of the 2.7.as mine is already efi do i use my existing bolt ons or the 2.7 ones.will my ecu be okay?thanks

Post by **ottie** » Mon Dec 03, 2007 1:29 pm

any help on this guys?

Post by **beebee** » Mon Dec 03, 2007 6:57 pm

ottie wrote:its an a series auto so thats good.apart from the engine mounts to be moved what would i need to use of the 2.7.as mine is already efi do i use my existing bolt ons or the 2.7 ones.will my ecu be okay?thanks

You should be using all of the 3RZ gear - including the ECU.....

Post by **BabyGodzillaGTi-R** » Wed Jan 16, 2008 11:35 pm

Hi guys i know this topic is quite old. Does anyone by chance have a wiring diagram for the 3RZFE?
I recently acquired a 3RZFE auto.
I think it's from a Prado.
I would like to drop the engine only into my 84 Daihatsu Rocky.
Roughly what re the things i need to do to get an auto Prado engine work in my Rocky manual box especially with the electrics?
Still quite clueless with the electrics.

This will be my 1st conversion so i'm getting as much info i can b4 i take the plunge.
Thanks
Cheers.

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4Y to 3RZ EFI engine conversion

4Y to 3RZ EFI engine conversion

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