Jump to content
SAU Community

Recommended Posts

Hi peeps,

Does anyone know where can I get this type of Manifold ? (to suit RB20)

manifold-1.jpg

Cheers

Ford

thats a greddy flop to suit RB25, i hope they have fixed the coolant passage water injection from those copies now :D i have seen at least 5 hydro'd engines from them now.

but seriously hypertune and so forth do fabricated plenums for rb20 from memory.

Ebay Link 1 is what I have on the way. Best design I have found thus far. Uras, didnt Trust make an RB20 one yeons ago???

nah cause twentys are gay :D

haha kidding. is yours making noise yet? when we going for a test drive.

nah cause twentys are gay :laugh:

haha kidding. is yours making noise yet? when we going for a test drive.

HRMMM strange, I vaguely remember seeing a picture of one on the R31 House site a while back (translation wasnt too good, but ah well)

Mine goes broom broom just after easter (I HOPE), Ill have to give u a ride, personally Im scared :rant:

thats a greddy flop to suit RB25, i hope they have fixed the coolant passage water injection from those copies now :laugh: i have seen at least 5 hydro'd engines from them now.

but seriously hypertune and so forth do fabricated plenums for rb20 from memory.

i have one of these wat you mean buy that wanna make sure before i put it on

i have one of these wat you mean buy that wanna make sure before i put it on

im based in melbourne and got called out to a workshop (remain unamed) to investigate genuine greddy plenums (turned out to be copies) hydraulic locking engines...... it turned out that a whole batch of these copies landed in melbourne and the manufacturer had tapped thru the water passage into the intake runner.... nice work. just pressure test the water passge if your worried.

Edited by URAS
Unless its a pretty wild RB20 then dont bother. The std plenum seems to work really well for the sort of power you are going to get out of a 2L 6 cylinder. Spend all you rmoney on good quality bits, mainly turbo and a good tuner and you will get good results

+1

  • 2 weeks later...

plenum.jpg

Got this today....Its a KU Engineering one....Friggin top notch welding and design....Im stoaked...Should go nicley.

EDIT: Its really shiny too just my camera sucks the fat wang! (not that shine does anything for its performance) Also its fairly thick - the chamber, not just my old fella :happy: so it shant have problems leaning out a rear cylinder. But time will tell..

Edited by Wheezy
Unless its a pretty wild RB20 then dont bother. The std plenum seems to work really well for the sort of power you are going to get out of a 2L 6 cylinder. Spend all you rmoney on good quality bits, mainly turbo and a good tuner and you will get good results

couldnt agree more with Roy, i make 366.3hp (on two diferent dynos one in shootout mode) and still have more room to play, only real benifit you'll get is shorter pipe work.. spend the money elsewhere

HEHE Luckliy the figures that I'm chasing are higher. I totally agree that on pretty much any RB20 its not necessary, but it does get rid of alotta pipes and hoo ha when you wanna get to something on the engine :happy:

OH, and if youve spent the money everywhere else and am stubborn like me and wanna stay RB20 then go for eeeeeettttt

Edited by Wheezy

What power are you chasing from the RB20? It will be interesting to see what power it makes with the plenum. Be great if someone could do a before and after with the plenum...i would except i just experimented with my engine at some expense only to put it back to the way it was so im shy about trialling anything for the time being

I'll want to do the b4 and after thing with my rb20 after its all run in and going properly with the plazma man plenum just to see if there are any gains,but thats a while off just yet

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


  • Similar Content

  • Latest Posts

    • Maf is a question mark but TPS  I have set at 0.47, the fact that I’m getting proper voltage range out of it with the key on leads me to believe it’s functioning properly. I’m getting proper voltages on basically everything. I still need to look up voltage ranges for z32 maf and test that 
    • Honestly no not at all, but it’s a very basic tune, it’s stock injectors q45 tps and z32 maf. Other than that it’s a completely stock base map. The file is from nistune and from my understanding if it was tune related I would be able to unplug maf and tps and it would still start even if it was a really shitty start. I have tried starting it with coolant temp, maf, and tps unplugged none of those 3 togethor or individually changes anything 
    • 🏆 Skyline Supremacy Meets Mount Panorama Magic 🏆 Join SAU NSW as we take the long way to Bathurst, the home of GTR greatness. Saturday 30th August 2025 7:00AM Meeting Hanna Park North Richmond 7:30AM Departure Cruise Via Bells of Line Road 9:00AM Arrival to Stop 1: Golden Poplars Meadow Flat 9:45AM Arrival to Final Destination: Mount Panorama Motor Racing Circuit Meet Location: Hanna Park North Richmond Stop 1: Golden Poplars Meadow Flat Final Destination: Mount Panorama Motor Racing Circuit   *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
    • What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day   Highway gets as low as 10l/100km on my end so I'm not as worried about it being a mechanical issue. More likely just the tune on the haltech.
    • While I was waiting for the new parts to come in for the charge pipe and radiator I decided to do some turbo modification. The drive pressure (exhaust backpressure) was a lot higher that I thought it should be. For 32lbs of boost drive was 55lbs. The turbine housing is a 1.10AR and my turbo builder has suggested to go to a 1.25AR. To test if a larger AR would do anything to reduce drive pressure AND not spend any money I decided to hog out the divider in my current housing. I removed it from the inlet and the whole way through the housing.  After reassembly and testing it doesn't look like this modification did anything for reducing drive pressure or requiring more fuel (making more power). Oh well, it was worth a shot. We'll get some data at the track if it makes it past the 60ft. I also machined a $7 shift knob off Amazon to fit my Stillway shifter since I didn't like the Stillway shift knob. Next on the list was the radiator replacement and fabrication of a new intercooler tube that had no silicon coupler. No pictures of this - I was short on time each night after work to get this done and didn't stop to take pictures.  Next was to get the clutch disks out and replaced. Previously when installing the dogbox I had ordered a set of the same sintered iron disks I had been running because I switched to the 26-spline input shaft. I thought it was odd that they didn't have any markings or brand name on them like all my old disks had but installed them anyway. At the track I could not get the clutch to lock up using my normal strategies. After two track nights I reached out to the clutch manufacturer and ask their thoughts. They said they had to switch the material out because they were having trouble getting the original material and that this new material would not take to being slipped very well.  So out with the first set of 26-spline disks and in with the correct material 26-spline disks. While I had the trans out I added an inspection/service hole. I've wanted one of these for a while. Now I can have a look at things and change the front cover shimming when needed (clutch wear). I hustled and got the clutch change done in a few hours on a Saturday. Hopped in the car and drove home. On the way home I did a 1-3 pull. When shifting from 2nd to 3rd the core plug in the back of the cylinder head popped out and dumped all the coolant. Thankfully I was only 30 seconds from home and coasted it there. Datalog showed nothing unusual and 2.5psi of coolant pressure. That plug has been in there since 1992 but I guess it worked its way out. Pulled the trans AGAIN and replaced the plug, JB welded it in, and made a brace. Also deleted the head drain I had added in during the bearing issue fiasco.  I am currently changing my boost control plumbing to make it cleaner. After that is done I'll make another attempt at getting past the 60.
×
×
  • Create New...