How to install a RB20DET into a VL..

[VLRB20DET]

Originally Posted by poohkies

mmmm beg 2 differ, run cold air retard timing a little and 12 pond up here running bp ultimate and she never pinged and she wasn't slow!

just my experence! just didn't have the founds to put a front mount on at the time! just got 2 90 diagree bends and welded them together! didn't have much lag :P

Yeah fair enough mate, I myslef just cant see the point of putting in a rb20 and not running a cooler but everyone to their own.. and at $350 for a Pro100 cooler thats bloody cheap for a new FMIC

[chalkie]

Hey,
Im currently doing a Rb20det conversion on my vl. I've helped mates do these b4. Im having trouble setting up my power steering pump! Can you help?
Chalkie.

[VLRB20DET]

Originally Posted by chalkie

Hey,
Im currently doing a Rb20det conversion on my vl. I've helped mates do these b4. Im having trouble setting up my power steering pump! Can you help?
Chalkie.

Sure can mate, its verry simple, remover the powersteering unit the RB20 comes with and simply replace it with the RB30 unit, bolt it up (it will just fit)
put the rb30 p/s belt on and your powersteering will work fine

The reason why we dont use the RB20 unit is they are a dual stage pump where the RB30 uses a single stage pump

[vlthunter]

hey fellas, i wanna do a similar conversion but with an rb25 det. why cant you use the rb25 ecu? also will the wiring between the rb25 and rb30 be similar to that of the rb20 to rb 30?
wiring is the only thing i am worried about at this stage.

[poohkies]

u can get kits, look on the internet

u would use the rb25 ecu with the rb25, the only thing u have to wire up is the ignition etc to the ecu, so that car will start and power the computer, same as u would have to do with any conversion! hunt around and u will find it, i believe www.justjapautomotive.com will sell u the wiring loom diagram for around $150-$200

[poohkies]

Originally Posted by VLRB20DET

Yeah fair enough mate, I myslef just cant see the point of putting in a rb20 and not running a cooler but everyone to their own.. and at $350 for a Pro100 cooler thats bloody cheap for a new FMIC

yeah now the price is cheap and wouldn't disagree with that at all, but back 2 years ago it wasn't so cheap! $2000 for a intercooler and piping!

[vl86rb20]

i have done the rb20 conversion on my vl and its not as complex as your saying. i didn't have to change over any of the things you say.

for all the sensors just wire them up properly from the ecu. i didn't change any of them.

all the rb gearboxes are the same(except the 4wd ones) the gearboxs are just gear out differently, on a standard vl diff the rb20 gearbox puts the speedo out by 20kmph(4.11 fix this) i've gone through a couple of rb30 boxes and a rb20 box and they swap straight over, no physical difference, and rb25 boxs will bolt straight on also. clutchs are exactly the same too.

with the rb20 powersteering pump just block off one of the lines or join them both together. it works fine. aircon works fine also with the rb20 one.

if you change the harmonic ballancer the altenator will be out of alignment with the belt, hence you will go throught a belt a week. just leave the rb20 one on there.

apart from doing a service, waterpump(which by the way is the same as a vl one) and timing belt. you don't have to change anything. just hook it all up. and if you have all the gear there and auto to manual conversion is easy too.

i did my conversion in a day. really the hardest part is the wiring, but even thats not to hard with all the diagrams.

this conversion is very easy to do.

[FLYNVK]

just a question what computer r you's using cause i want to do this conversion on my vk

[BOOSTN_06]

so no-one on here has a wiring diagram for an rb20det?? why wouldnt ya just post it up and help out a few lads.

[brett_32i]

the shifter is the same on the rb series of gearbox (not 30t).

is the sr20 the same? now it looks identical (photos on net), but i dont want to buy one to find out it wont bolt up......

[SHAUNUS]

buy a half cut,get them around 2000 imlucky my gfs bro works at a performance shop and said he would install it for free if i help him ahahahhaa

[NVS]

My m8 had an RB20 in his VL. he runs a Haltech computer.
runs 12's @14psi 1/4mile.
In need of a turbo & manifold upgrade, the ceramic wheel just wont cut it. any sugestions on what manifold & steel wheel ball bearing turbos will fits?

http://i5.photobucket.com/albums/y156/susvs/vleng.jpg

[darkl0n]

for the people asking for wiring information check out the following sites:

http://www.gweeds.net/carpage2/nismodoreindex.html

http://www.rb20det.com/ecupinout.html

i know the first one only has information about the wiring for a rb25det, but if you compair with the pin outs on the other site you should be able to work it all out.

the main things that you don't need to worry about on the rb25 diagram is the valve timing solonoide, boost control valve, and the stuff that is not labeled and dose not exist on an rb20det, also take note that the pin outs for the injectors are different on the two motors.

with the two sites above i worked out a hacked up rb20det auto wiring loom, with half the connectors missing.

[SHAUNUS]

yeah use an rb25det turbo aparently they work well... and im assuming the rb25 manifold will fit the rb20 as there both similar engines

[VLHERO]

How did you guys manage to fit the VL slave cylinder to the RB20 box? Unless you made a bracker as they have different bolt patterns. Not really necessary anyway as you can just swap the clutch line over onto the Rb20 slave cylinder.

[DEVL25]

Originally Posted by VLHERO

How did you guys manage to fit the VL slave cylinder to the RB20 box? Unless you made a bracker as they have different bolt patterns. Not really necessary anyway as you can just swap the clutch line over onto the Rb20 slave cylinder.

My box came with the rb25 slave attached so i just took the VL master cyl and rb25 slave cyl into Enzed and they made up a clutch line for me.

[darkl0n]

i am using a vl gearbox, so i have none of that to worrie about, also using a vl box it won't put your speedo out.

sorry i think i miss read what you wrote about the slave cyl.

[VLHERO]

Whats the go with that?! The VL clutch line just screws into the RB20 slave!

[darkl0n]

hey what did every one else who has put in an rb20det in to a vl do, as far as the throttle cabel go's, as i made a bracket on the back of the manifold, but it only allows you to open the t/b to about 75% when your foot is flat to the floor.

so did anyone swap the t/b on the rb30 to the rb20 or did ya's do something else.

cheers

[poohkies]

i used zip ties, and i'm being serious

[allan]

hey i have got a vl with the converison i bought it allready done but the tacho has never worked could u plz send me the diagram of wat i need to do to make it work ok thankz plz email back soon

[Lurkin]

do a search man, been on here heaps

[abusiv-vl]

Here guys check out my conversion heaps of info and pics

Here guys check out my conversion heaps of info and pics

http://d1nz.org.nz/forum/viewtopic.php?t=14754

Originally Posted by VLHERO

How did you guys manage to fit the VL slave cylinder to the RB20 box? Unless you made a bracker as they have different bolt patterns. Not really necessary anyway as you can just swap the clutch line over onto the Rb20 slave cylinder.

The Vl slave bolts staight up to the Rb20det box im running a rb20det box behind my rb30et

[nekomonky]

why would you replace all the sensor's to Vl ones when your going to be using the rb20det motor? i kind of missed something.

Ive also read that the engine is a direct swap, as in, take rb30 out, drop rb20 in, wire it up, and its done, i have never heard from anyone that there is a need to replace the sensors and compressor's and all that other stuff listed, im pretty sure even the engine mounts from the rb30 would bolt up to the rb20?

might be wrong though.

[NVS]

nice write up Abusiv-VL, almost same colour as my m8s RBVL20.