Jump to content
SAU Community

R33 Rb30 Conversion

JNR24

By JNR24,
in Engines & Forced Induction

 Share

Recommended Posts

  • Replies 7.2k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

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

bubba Grand Master

bubba

Posted
Posted
Finally fired the new machine into life with a slightly strange situation, Im running N1 pump, 26 head with 2 x 1mm restrictors. The strange part is I have fitted a mechanical autometer oil pressure gauge off the main gallery where the original RB30 oil pressure sender screw into & it gradually goes off the chart to 100psi at idle..... Im running 15/40 shell helix mineral oil, the std oil pressure gauge on the dash reads about 3/4. Not sure if I have an issue with the oil thickness or a bodgy gauge....

Anyone else had this?

I havnt fully warmed it up yet as still fitting the wideband sensor & want to make sure all is good

Cheers, Matt

I see 100psi at idle when cold (N1 pump), at normal operating temp. I see ~40psi at 2000rpm, ~60psi at 3000rpm, ~80psi at 4000rpm and 100psi after that. Hot idle sees 10-20psi depending on how hot the oil is.

Godzilla33 Community Regular

Godzilla33

Posted
Posted
I see 100psi at idle when cold (N1 pump), at normal operating temp. I see ~40psi at 2000rpm, ~60psi at 3000rpm, ~80psi at 4000rpm and 100psi after that. Hot idle sees 10-20psi depending on how hot the oil is.

Thanks, I warmed it right up last night & found pretty much the same result as yours, I was just a bit sus that I may have had something more sisnister causing it. Do you run a restrictor for your turbo oil feed? Im running GT3540 (brand new) & noticed a bit of oil in the compressor, I know they have small feed holes down in the cartridge but thinking I may need one in the block fitting similar to the standard banjo style or weather its just settling

bubba Grand Master

bubba

Posted
Posted
come on strap that thing on i wanna see the response of it :P

lol

went to my mates workshop last night as he finally got the 26 back in the 32gtst that's in there. Took some measurements to see where the plenum sits in relation to strut tower etc. discovered I will need to get a 33 clutch master cylinder (which is good because mine just started leaking hehe).

Will be dropping the plenum off to be welded up later this week, once I get it back we can start bolting stuff on :O

Got a paintball tournament in 3 weeks and will be training a lot until then so it will be slow progress :O

Looney_Head Rising Star

Looney_Head

Posted
Posted

Hi Guys,

just a quick question.

i have a R32 rb25de head with no cams and was thinking of getting the following:

2202-RN170, IN (256deg) (Lift 8.8) (valve timing 110)

2202-RN175, EX (264deg) (Lift 9.0) (valve timing 115)

what are your ideas on how these will go on a RB30/25 build

silver gts-t Grand Master

silver gts-t

Posted
Posted
lol

went to my mates workshop last night as he finally got the 26 back in the 32gtst that's in there. Took some measurements to see where the plenum sits in relation to strut tower etc. discovered I will need to get a 33 clutch master cylinder (which is good because mine just started leaking hehe).

Will be dropping the plenum off to be welded up later this week, once I get it back we can start bolting stuff on :D

Got a paintball tournament in 3 weeks and will be training a lot until then so it will be slow progress :P

I'm having the exact same issue with an aftermarket plenum.

if you can post some pics with the r33 one installed that would be great.

Looney_Head Rising Star

Looney_Head

Posted
Posted
What head are those cams to suit?

the cams are for an RB20DET

i was wanting to get 264 in and out but the person i have been talk to can only do the below combo.

the other option i was thinking was Tomei Poncams 256 in and out with 8.5mm lift

bubba Grand Master

bubba

Posted
Posted
I'm having the exact same issue with an aftermarket plenum.

if you can post some pics with the r33 one installed that would be great.

Will do.

There is apparently some slight modification of the pushrod that needs to be made but my mate has done this before, I'll try document it for yas :D

If you have a look at your stocker one, imagine that the cylinder doesn't extend past the resevoir.. that's how big a 33 one is.

On another note, dropped my plenum bits off at the fabricator yesterday afternoon! :D

silver gts-t Grand Master

silver gts-t

Posted
Posted
Will do.

There is apparently some slight modification of the pushrod that needs to be made but my mate has done this before, I'll try document it for yas :D

If you have a look at your stocker one, imagine that the cylinder doesn't extend past the resevoir.. that's how big a 33 one is.

On another note, dropped my plenum bits off at the fabricator yesterday afternoon! :(

I was also looking at aftermarket ones, i spoke to sydney race brakes who advised they should have something but for what price....

Another option is finding one from another make, alot of european cars have small cylinders with remote tanks.

Since my plenum is custom theres no rounded end so its the same heigh for the whole lenght.

Ill post pics when i get time.

bubba Grand Master

bubba

Posted
Posted
I was also looking at aftermarket ones, i spoke to sydney race brakes who advised they should have something but for what price....

Another option is finding one from another make, alot of european cars have small cylinders with remote tanks.

Since my plenum is custom theres no rounded end so its the same heigh for the whole lenght.

Ill post pics when i get time.

$140 for a 33gtst clutch master cylinder. Shorten the pushrod slightly and bobs your aunty. I'm going to need to put mine in soon as I'm losing ~1/2 the resevoir in a little more than a day.

Looney_Head Rising Star

Looney_Head

Posted
Posted
the cams are for an RB20DET

i was wanting to get 264 in and out but the person i have been talk to can only do the below combo.

the other option i was thinking was Tomei Poncams 256 in and out with 8.5mm lift

any opinions people?

  • 2 weeks later...
Gts-t Grand Master

Gts-t

Posted
Posted

Im putting a 26/30 into my r32 gtst. I am going to buy a new standard balancer to go with it. Does anyone know which one is the best to use? I am thinking rb26 but are all the belts the same. I dont have A/C anymore so that ones not an issue

cheers guys!

TiTAN Grand Master

TiTAN

Posted
Posted (edited)

from memory it depends which power steering pump you are using, and if the belts line up correctly. Assuming the alternator/water pump belts are the same.

but for the price of the ross units why not just get one of them?

Edited by TiTAN
satanic Grand Master

satanic

Posted
Posted

I read a few pages back that there are engine mounts that can be used to lower the motor a bit. Can someone please:

1) verify that this works?

2) confirm how much lowering we're talking about?

3) confirm where to get these engine mounts from?

Oh yeah, we started up the RB2630 the other day after a long arse build - thanks to everyone here who gave valuable info through PMs etc. So far we've made 330rwkw on 14psi through the auto gearbox. Torque was at 487nm, and it was at this point where the flex plate in the auto gave up (see pic below)

flexplatedamage160908xx2.th.jpg

A new item has been sourced n sent down to MV Automatics for strengthening :bunny:

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • jtha7
      Replacing turbo water line - any recommendations or advice?

      By jtha7 · Posted

      Hi all, Restoring r33 series 1 rb25det. All the heater hoses were on their way out, have replaced them and put it all back together. After testing I noticed a small leak from behind the head on the actual metal water line to the turbo when cars warm. I tried running a longer hose over it but it kept leaking...   I am about to take the (stock) manifold off again😔 to change the water line does any one have any lines they recommend? I was looking at Aeroflow Turbo Oil & Water Line Set but not sure what everyone else recommends. Car is completely stock but want to upgrade turbo eventually. it looks like ill have to disconnect a lot just to replace these lines so if there's anything else recommended to do please let me know. Thank you in advance!
    • MBS206
      RB20DE NEO smallbox clutch.

      By MBS206 · Posted

      From memory, on the R33 GTSt at least, while everyone says "It's not adjustable", I found when I changed clutches in mine, it just needed a small adjustment on the rod length. But be very wary here, as you could end up trying to push the pushrod in the master too far, or blowing out the slave.   Most likely though, if the master/slave isn't bypassing internally or leaking out, then the throw out is the wrong height compared to the fingers on the clutch, so when it moves to disengage the clutch, it isn't 100% disengaged. You can check part of this out too by jacking the car up, having the engine running, put your foot on the clutch and try to engage 1st gear. If it goes in pretty easy (Compared to the ground) and/or the wheels start turning a fair bit and it takes a bit too much brake pedal to bring them back to a stop, this is likely the issue.  I'm not sure if you can adjust the height of the forks etc in these though, it's been that long since I've touched any RB gearbox.
    • MBS206
      Lock up the old for sale / wtb threads.

      By MBS206 · Posted

      That's all good, I thought I was missing some interesting feature! Maybe @PranK can double check if that is something that is meant to be operating or not.
    • Kapr
      RB20DE NEO smallbox clutch.

      By Kapr · Posted

      I hope that is not something that bad. From what i remember he said that only first gear is "hard" to get in and that he has couple of ideas what to try next but idk 😕  hope it is not gearbox out. I will let you know.
    • GTSBoy
      RB20DE NEO smallbox clutch.

      By GTSBoy · Posted

      If it's not the hydraulics, it is probably gearbox back out. Usually as per @Duncan's post, or otherwise associated with not getting the throwout fork positioned correctly. All the way up to catastrophically bolting shit back together without it being aligned properly and wrecking the clutch/input shaft/flywheel/something else.
×
×
  • Create New...