Jump to content
SAU Community

Recommended Posts

What i want to know is if there is a big power difference inbetween the two plenums ?

From what I can understand is that for big power RB26 applications single throttle plenums are the way to go when you're running a single turbocharger setup, whilst six throttle plenums are more useful for retaining low mount / oem turbo chargers.

Hope that helps.

Edited by Ants

From what I can understand is that for big power RB26 applications single throttle plenums are the way to go when you're running a single turbocharger setup, whilst six throttle plenums are more useful for retaining low mount / oem turbo chargers.

Hope that helps.

first ive heard of that...

people are making 900hp plus with the standard plenum and throttles! the thing with the 6 throttles is that it causes a slight disruption with air flow (turblulence) and can be hard to tune, however there are plenty of people that can tune them and do time and time again

first ive heard of that...

people are making 900hp plus with the standard plenum and throttles! the thing with the 6 throttles is that it causes a slight disruption with air flow (turblulence) and can be hard to tune, however there are plenty of people that can tune them and do time and time again

Look mate, I acknowledge that standard RB26 plenum can be used in high horsepower RB26's. HOWEVER, Standard throttle bodies on big powered RB26 can cause difficulty when tuning the car (as you have mentioned) and research has found that single throttle setup ups for big power applications (500+kw) are better for flow and tuning.

Just have a look at all the big powered RB26's (500+kw) and you will see they do not use standard six TB's.

Also, I do not see many low mount set-ups running single throttle plenums, why?... because there is F all performance gained from that upgrade at that power level.

Edited by Ants

Look mate, I acknowledge that standard RB26 plenum can be used in high horsepower RB26's. HOWEVER, Standard throttle bodies on big powered RB26 can cause difficulty when tuning the car (as you have mentioned) and research has found that single throttle setup ups for big power applications (500+kw) are better for flow and tuning.

Just have a look at all the big powered RB26's (500+kw) and you will see they do not use standard six TB's.

Also, I do not see many low mount set-ups running single throttle plenums, why?... because there is F all performance gained from that upgrade at that power level.

no need to get up on your high horse about it! clearly you are a little sensitive on the issue but im not going to get in an E fight with you when clearly you cant except either

  • 1 month later...

There has been a massive delay with my build. The workshop who is doing my build is moving from Campbellfield to Sunshine, once they are settled in my build is going to commence. In the mean while i have picked up a Nitto oil pump.

Parts that i have so far:

HKS Cam Gears

HKS Fuel Rail

HKS T51R SPL with T62R front wheel

HKS Manfiold

HKS 60mm Wastegate

Nitto 2.8 Stroker

Nitto Oil Pump

N1 Block


Mildy ported RB26 heads with bronze valve guides ready to be sent off for a massive overhaul + CnC porting.

Edited by Tyranus
  • 1 month later...

After a MASSIVE delay it has finally arrived.. my Nitto 2.8 stroker..

20130712_141733_zpse4e99e41.jpg

20130712_141748_zps32c7dc4f.jpg

20130712_142019_zpsaf3a8493.jpg

20130712_142013_zps5b95eebe.jpg

20130712_141742_zps909c6fea.jpg

20130712_141858_zps5bd847b9.jpg

20130712_141842_zpsd7da462a.jpg

20130712_150515_zps28ef25d1.jpg

20130712_150643_zps32d5cc3f.jpg

Because i had to wait so long for my stroker to come i took my mechanics daily for a little "test" drive. Least to say i was very impressed with the cars stock performance.

20130712_142908_zps078429db.jpg

20130712_142729_zps6c67bd25.jpg

From what I can understand is that for big power RB26 applications single throttle plenums are the way to go when you're running a single turbocharger setup, whilst six throttle plenums are more useful for retaining low mount / oem turbo chargers.

Hope that helps.

For a whizzer as big as you are planning to run, go the 90mm single throttle body plenum. It will be easier to tune. Any advantage of ITB's will be negated by such a large turbo and the delivery it will provide.

I don't buy into the 'single TB for big power, ITB's for small power' internet theory. It's been disproved in the real world time and time again. Single TB's are simpler to tune with.... and big power with an rb26 means big lag. The main advantages of ITB's are in the lower end or transient throttle- both of these areas are 'dulled' down with a large turbo.

Personally I chose to stick with ITB's, greddy plenum and twin trust td06 l2's on my rb28. I believe I achieve better throttle response, better transient response, higher intake air speed, more even air volume between cylinders and a better sound.

Cheers

Justin

For a whizzer as big as you are planning to run, go the 90mm single throttle body plenum. It will be easier to tune. Any advantage of ITB's will be negated by such a large turbo and the delivery it will provide.

I don't buy into the 'single TB for big power, ITB's for small power' internet theory. It's been disproved in the real world time and time again. Single TB's are simpler to tune with.... and big power with an rb26 means big lag. The main advantages of ITB's are in the lower end or transient throttle- both of these areas are 'dulled' down with a large turbo.

Personally I chose to stick with ITB's, greddy plenum and twin trust td06 l2's on my rb28. I believe I achieve better throttle response, better transient response, higher intake air speed, more even air volume between cylinders and a better sound.

Cheers

Justin

+1 on the better sound!

Small update:

Nitto oil pump is arriving this week.

Ordered these parts which should also be coming this week:

Tomei Oil Restrictor

ACL Race Bearings (Main & Conrods)

ARP Main Studs

ARP Head Studs

Nitto Full Gasket Kit

Nitto 1.5mm Head Gasket

Nitto Oil Head Drain

ATI 1000HP Balancer and Water Pulley

Thats it so far.. :)

Edited by Tyranus

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

    • My thought is if you were just moving it forward and the upstream geometry remained the same, then no difference at all. But because the current one has the filter direct into the AFM inlet, you effectively have the best chance of a completely symmetric air flow profile upstream, and in, the AFM, whilst the aftermarket inlet thingo has a (small, to be sure) bend between the filter and the AFM. That would bias the flow to the outside of the bend (downstream of the bend) which might well reduce the size of the signal seen by the AFM, for the same total flow rate. Having said that: If you're proposing to make your inlet look like a hybrid of your existing one and the aftermarket one, such that there is no bend where the filter is clamped on... then I say it will be just fine. If there is going to be such a bend, then, if you can align the insertion of the AFM blade such that it is at right angles to the plane of the bend, then there is a better than even chance that the centreline velocity where the blade is will remain more or less the same, and the velocity will just be a little faster to the outside of that, and just a little slower to the inside. **This is not professional investment advice and you should consult a suitably qualified ouija board, tea leaves or the intestines of a goat for more accurate prognostication.
    • Hi Tao, Thanks for your reply.  It's been a while and I managed to get the valve stem seals replaced with the head on the car.  Unfortunately this didn't solve my issue, the car still smokes a lot after idling (to be honest during idle you can see a bit of blue smoke from the exhaust), same after deceleration. I will try disconnecting the valve cover breathers, do I leave the PCV valve in? By engine oil drain pipe, do you mean the turbo oil drain?
    • What about if you just give it direct 12v and earth?
    • Hi guys . Can someone help me  I bought an Android screen for my Nissan fuga but it won't turn on   
    • My guesstimate, with no real numbers to back it up, is it won't effect it greatly at all.its not a huge change in position, and I can't see the air flow changing from in turbulence that much based on distance, and what's in front of it. Johnny and Brad may have some more numbers to share from experience though.
×
×
  • Create New...