Jump to content
SAU Community

Recommended Posts

50 minutes ago, Nosure said:

Hi. Will fit on a fully build rb28 with cnc head 280 cams etc. 

turbo is here today. New exhaust setup should be done in 3 weeks time. 

 

:worship:


I like it.  Very cool, look forward to seeing how this comes together - sending it on E85?  Please post results when it's done :)

1 hour ago, Lithium said:

:worship:


I like it.  Very cool, look forward to seeing how this comes together - sending it on E85?  Please post results when it's done :)

Yes mate. E85 full time.  The 1.45 housing look huge.  Hope I choose the right housing:)

2 minutes ago, Nosure said:

Yes mate. E85 full time.  The 1.45 housing look huge.  Hope I choose the right housing:)

That that size cams, engine and compressor you obviously want to party - so that turbine housing will be well justified I suspect :) What kind of power and power delivery were you looking for?

Fwiw I've been in a GTR running an RB28 with a 1.45 EFR8374 and it was surprisingly punchy, the 280deg cams will probably soften it up a bit down low but I suspect it'll still have a hearty power delivery - so long as the black series 68mm compressor doesn't come at too much cost in spool.  I suspect it should prove to be a pretty rewarding power delivery

1 hour ago, Lithium said:

That that size cams, engine and compressor you obviously want to party - so that turbine housing will be well justified I suspect :) What kind of power and power delivery were you looking for?

Fwiw I've been in a GTR running an RB28 with a 1.45 EFR8374 and it was surprisingly punchy, the 280deg cams will probably soften it up a bit down low but I suspect it'll still have a hearty power delivery - so long as the black series 68mm compressor doesn't come at too much cost in spool.  I suspect it should prove to be a pretty rewarding power delivery

What I see is the compressor flow increase 20% might need bigger rear housing to max out the turbo.  1.05 is small even for 8374 in my eye. 

14 hours ago, Nosure said:

What I see is the compressor flow increase 20% might need bigger rear housing to max out the turbo.  1.05 is small even for 8374 in my eye. 

Agreed, the 1.05 can work ok on EFR8374s depending on the setup but I wouldn't use it on an EFR8474 on a 2.8 with a good head.  It sounds like a good combo from all I can tell.  Looking forward to seeing how it comes out :)

Edited by Lithium
On 26/06/2019 at 5:59 PM, Deano 1 said:

Closed/ Secret FB group, I assume it's a GTR for sale. And I didn't think cross posting to for sale ads was allowed?

That isnt a terribly hard question to answer if you know what is max engine RPM?  a 2.8L engine revving to 8500rpm @40psi boost, will produce 1000+hp at the limit of the compressor map.  Speed sensor mandatory. 

The 80mm turbine in 1.45 a/r will see 11-13psi backpressure so its really a question of why do you need 1000hp and is this really the right way to get there? 

10 hours ago, Deano 1 said:

will the 9280 make 1000hp atw on a 2.8 with everything needed to make 1000hp...... that is the question.

Depends on how harsh the dyno is etc, the compressor flow is there for well >1000hp @ crank on E85 but the question with the EFR range has often been if the exhaust side is up to it given people already run into EMAP issues with the EFR9180.. granted it's hard to know how much that's just due to people running out of compressor on them

  • Haha 1

People really like round numbers don't they.. My car did 495kw at absolute max turbo speed and everyone always asks why I didn't go one psi more to break the half ton.

 

If you need a round number in your life set the Dyno to metric and aim for 700kw instead of 1000hp.

 

People forget that tuners pull a degree or two of global out when they unstrap the car anyway. 

 

 

Edited by burn4005
  • Like 1
  • Thanks 1
12 minutes ago, burn4005 said:

People really like round numbers don't they.. My car did 495kw at absolute max turbo speed and everyone always asks why I didn't go one psi more to break the half ton.

I might be in the right mood for this, but I love so much about this comment. 

1000hp is such a random made up number, like I understand the bragging rights but seriously.  If you get an EFR9280 on a strong RB28, and tune it until you hit around 117,000rpm shaft speed then who gives a crap what the dyno says - that is going to be a FAST car.   Pick a bunch of parts which work well together and build, tune until it's sent and go forth and enjoy... that is the way to get a happiest result.  The reality is those other numbers become academic in the end and sometimes result in people making compromises trying to hit a target which is academic and realistically you will make different power on different days or different situations depending on what various aspects of the tune kick in and compensate for whatever may be going on at the time, as you get ESPECIALLY on big high strain setups.

A specific power number which can mean different things on different dynos and even days, or setups is not worth making compromises on imho.

  • Like 1

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

    • Major thread necro but how bad of a job is it to DIY? Looking at it online it looks like if you reuse your ring and pinion as long as those are in good condition it should be fine to just pull the axles/front cover and replace the diff that way? Or should I be replacing everything and doing preload measurements/gear mesh testing like the factory service manual mentions for the rear diff?
    • in my list I had the R33 GTR as the best Skyline. Infact I had all GTR's (33>34=32), the NSX, the GTO, the 300ZX, the 180SX, the S15 better than the FD RX7. I had the MR2 and the A80 as 'just' better. I also think the DC5R Integra looks better but this is an 01 onwards car. I also think the FC>FD. It's almost like aesthetics are individual! The elements @GTSBoy likes about the FD and dislikes about the 180 are inverse in my eyes. I hate the rear end of the FD and it's weird tail lights that are bulbous and remind me of early hyundai excels. They are not striking, nor iconic, nor retro cool. The GTO has supercar proportions. I maintain these look much better in person (like the NSX) especially with nice wheels and suspension which is mandatory for all cars pretty much. Some (or all) of these you have to see in person to appreciate. You can't write a car off until you see one in the flesh IMO. Like most people we probably just like/dislike cars which represent certain eras of design or design styles in general. I also think the 60's Jag E type looks HORRIBLE, literally disgusting, and the 2000GT is nothing to write home about. FWIW I don't think the Dodge Viper Gen1's have aged very well either. You can probably see where I rate bubbly coupes like the FD. I know we're straying now but the C4 and C5 absolutely murder the Viper in the looks department as time goes on, for my eyes. Wouldn't surprise me if people who love the FD, also love the MX5, Dodge Viper, Jag E Type, etc etc.
    • I used to hate R31s, and any of the other Nissans that led up to it, and any of the Toyotas with similar styling, because of the boxiness. They were, and remain, childish, simplistic, and generally awful. I appreciate R31s a lot more now, but only the JDM 2 door. The ADM 4 door (and any other 4 door, even if they are unique compared to our local one) can eat a bowl of dicks. The Aussie R31 is also forever tarnished by their association with stereotypical bong clutching Aussie R31 owners of the 90s and early 2000s. I think the Nissans of the 70s (other than 120Y/180B/200B) are far superior looking to the 80s cars. The 240K era Skylines are boss. The same is broadly true of Toyotas. Hondas don't ever register in my thinking, from any era. Mitsus are all horrid shitboxen in any era, and so also don't register. Subarus are always awful, ditto. Daihatsus and Suzukis also don't generally register. They are all invisible. I think the SW20 MR2 looks fiddly. The 3000GT/GTO is like that but way worse. Too many silly plastic barnacles and fiddly gimmicks ruined what could have been a really nice base shape. Kinda-sorta looks like a big heavy ST165 Celica coupe (and I'm not sure if that's a good thing or a bad thing). I think the 180SX is dreadfully bland. It's not bad looking. But it has no excitement to it at all. It's just a liftback coupe thing with no interest in its lines, and bad graphical elements (ie wide expanses of taillight plastic on the rear garnish). The S13 Silvia is a little better - getting closer to R32 shapes. But still....bland. S14? Nope. Don't love it. S15...a little better. Probably a lot better, actually. Benefits from not being like a shrunk in the wash R34 (where the S13 was a shrunk in the wash R32 and the S14 looked like a Pulsar or something else from the stable on Nissan mid 90s horrors). The Z32 was hot as f**k when it came out but hasn't aged as well as the A80. Keep in mind that I think the R33 is the most disgusting looking thing - and out of all the previous cars mentioned is objectively closest to my precious R32. It's just....real bad, almost everywhere you look. And that is down to the majority of what was designed in the 90s being shit. All Nissans from that era look like shit. Most other brands ditto. In that context, the FD absolutely stands out as being by far the best looking car, for reasons already discussed. Going behind the aesthetics, the suspension alone makes it better than almost any other car.  
    • If they just called it the "Mazda Tiffany", it would have been spot on.
    • Yup but for me its the HR ! Cut my teeth on the old holden 6s in the day ! And here's me thinking in the day it was also the 300ZX and the Mitsubishi GT3000 ! All, as well had good lines, but always seemed to need finishing off, style wise.
×
×
  • Create New...