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R33 Rb30 Conversion

JNR24

By JNR24,
in Engines & Forced Induction

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Duncan
Duncan

Just thought I would bump this 20 year old thread because the Skid Factory have just posted up a video summarising a lot of the content, format might be more familiar for newer members

JNR24
JNR24

fyi guys, Well yesturday i picked up a RB30 for my conversion into my R33. I will be using my RB25DET head on the RB30 block. So i started stripping the motor down, pulled the crank, pistons, girdle

Cubes
Cubes

Here is all I have at the moment: http://www.geocities.com/r32_jjc/ Unless you are on broad band make sure you right click then save as. The file is around 120kb. If there is anything I have got w

Posted Images

CEF11E Veteran

CEF11E

Posted
Posted

Where have you people who are using R33 heads been plumbing you oil return pipe from the front right hand side of the head? do you get a "T" peice and blumb it into the turbo drain into the sump?

cheers :P

CEF11E Veteran

CEF11E

Posted
Posted

After a lot of hard work and long nights my RB30det is now in the car.

I have spent a few hours tonight trying to get it started and have not got there yet. this is frustrating

Fuel pump working - check.

CAS working - when i remove it and rotate it with the ignition on the injectors click and the fuel pump turns on

everything is wired up bar 1 plug on the AAC valve. the r32 loom has no provision for it.

I am still working out the best way to test spark. any ideas?

I have had to use R33 turbo injectors and it involved cutting up the original loom and grafting in the plugs but I have done it before for GTR injectors and no problems.

the motor turns over fine just does not start

when the crank is set to o deg btdc the cams line up with the locator pin marks perfectly.

so its fuel or spark i am missing or some electrical gremlin somewhere. if anyone has any ideal please shoot them my way. my goal was to have it running by tomorrow night.

so so tired...

sky30 Mentor

sky30

Posted
Posted
After a lot of hard work and long nights my RB30det is now in the car.

I have spent a few hours tonight trying to get it started and have not got there yet. this is frustrating

Fuel pump working - check.

CAS working - when i remove it and rotate it with the ignition on the injectors click and the fuel pump turns on

everything is wired up bar 1 plug on the AAC valve. the r32 loom has no provision for it.

I am still working out the best way to test spark. any ideas?

I have had to use R33 turbo injectors and it involved cutting up the original loom and grafting in the plugs but I have done it before for GTR injectors and no problems.

the motor turns over fine just does not start

when the crank is set to o deg btdc the cams line up with the locator pin marks perfectly.

so its fuel or spark i am missing or some electrical gremlin somewhere. if anyone has any ideal please shoot them my way. my goal was to have it running by tomorrow night.

so so tired...

What ecu are you running? If aftermarket, what was it previously tuned for?

CEF11E Veteran

CEF11E

Posted
Posted

I am using the following bits

RB30E bottom end :P

RB25DE VCT head from an R33 - removed VCT solenoid and used the hole to feed oil to the head -

stock plenum R33

R33 injectors

R33 AAC valve

R33 tps, (all sensors on the head are R33

R32 CAS

R32 ECU remapped to suit the 370cc injectors

Will try the timing light tonight. hmmmm

wake up at 6am go to work finish work at 4pm. go home work on car till 1am. sleep for 5 hours - repeat for 3 weeks...

damn i am tired...

shanef Grand Master

shanef

Posted
Posted

car should start with no afm, it'll just run like a pig and stall etc etc lol

it could be that ur battery isnt supplying enough juice

have u checked to make sure theres fuel getting to the rail?

CEF11E Veteran

CEF11E

Posted
Posted

thanks dudes :P

pulled the timing cover off and made sure the cas key is correctly set to the cam key.

the afm is plugged in and there is fuel getting to the rail. I am starting to think it is of 2 things.

1. there is no spark. because i have tried advancing and retarding the cas and no difference. and i can hear the injectors pulsing.

2. I have buggered up the injector firing order while making the new injector loom. this wil be a bastard to diagnose and will mean pulling off the plenum again.

I will make sure i am getting spark tonight.

also battery would be going flat but seems to turn over the motor fine. I am sure it is something silly. it will get there.

Also how long should you have to turn over the motor with ignition disconnected to get oil pressure?

r33_racer Grand Master

r33_racer

Posted
Posted

who knows...pull off your oil feed line to the turbo and let it spit into a bucket for a while and then hook it back up. Once it spits abit out of the line there should be oil pretty well everywhere else. It doesnt take long for it to work its way through the motor.

mr_rbman Grand Master

mr_rbman

Posted
Posted

may sound silly but a similair thing happened to me on my first start up that cubes will remember, haha!

It just turned out that my fuel lines were the wrong way round where they connect near the plenum!

Craved Grand Master

Craved

Posted
Posted
may sound silly but a similair thing happened to me on my first start up that cubes will remember, haha!

It just turned out that my fuel lines were the wrong way round where they connect near the plenum!

HAHAH ive done that before :thumbsup:

Dash lights are all on when cranking?

you can also try the carbie cleaner trick in the TB then crank, if it coughs like it wants to start, then you have no fuel and do have spark.

CEF11E Veteran

CEF11E

Posted
Posted

Well she is in and running :thumbsup:

rough as guts but running...

mr rbman you my friend are owed beers :(

just before you posted this this afternoon I looked at an RB photo and realized exactly what i had done. I then had to sit at work and look interested for the next 3 hours...

race home swap them over and ALIVE! it will not hold an idle and misses loke no tomorrow but it is running. tuning and testing will commence in a few days :) I have had enough for now

mr_rbman Grand Master

mr_rbman

Posted
Posted

haha, thought your problem sounded far too familiar!

Well she is in and running :)

rough as guts but running...

mr rbman you my friend are owed beers :(

just before you posted this this afternoon I looked at an RB photo and realized exactly what i had done. I then had to sit at work and look interested for the next 3 hours...

race home swap them over and ALIVE! it will not hold an idle and misses loke no tomorrow but it is running. tuning and testing will commence in a few days :D I have had enough for now

[200] Mentor

[200]

Posted
Posted

I have a question re CP Pistons.

I know they are off the shelf ones available for the 26/30 combo...

Is there anyway that these can be customised to tolerate high horsepower / boost applications? I am going to more than likely get a set with a 22mm pin diameter. I've read that the rings can be moved down on the piston for high boost. Can someone give me some info about getting a set custom made?

Also, dry sumps. Has anyone bought a dry sump for the RB30 motor? If so, where did you get it from and how much was it?

Spoolup Mentor

Spoolup

Posted
Posted

CP will make one off custom sets to order - the price is considerably more.

You must be planning to make an immense amount of power as there are a lot of off the shelf CP's out there making spastic power.

I have a question re CP Pistons.

I know they are off the shelf ones available for the 26/30 combo...

Is there anyway that these can be customised to tolerate high horsepower / boost applications? I am going to more than likely get a set with a 22mm pin diameter. I've read that the rings can be moved down on the piston for high boost. Can someone give me some info about getting a set custom made?

Also, dry sumps. Has anyone bought a dry sump for the RB30 motor? If so, where did you get it from and how much was it?

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