Jump to content
SAU Community

Recommended Posts

8:5;1 comp in ideal for boost. There are copper head gaskets that are custom made if you know the thinness to achieve 8:5:1.. 9;1 comp is fine… but you will be limited to how much boost you can run.

Www.coppergaskets.com.au. If your after one 👍

  • Haha 1
26 minutes ago, FiXtUrE said:

8:5;1 comp in ideal for boost. There are copper head gaskets that are custom made if you know the thinness to achieve 8:5:1.. 9;1 comp is fine… but you will be limited to how much boost you can run.

Www.coppergaskets.com.au. If your after one 👍

What’s the limit of boost at 9.0:1? Very curious to know.

  • Like 3
  • Haha 1

From my understanding you can achieve about 5 - 10 psi with 9:1 - 9:5:1 comp safely before it goes pop.. before you think this wack boost levels, you have to consider the turbo, dump back exhaust, fmic etc your going to use on your rb30. 

what power do you want, and is it a 5sp or auto?

  • Haha 3
3 minutes ago, FiXtUrE said:

From my understanding you can achieve about 5 - 10 psi with 9:1 - 9:5:1 comp safely before it goes pop.. before you think this wack boost levels, you have to consider the turbo, dump back exhaust, fmic etc your going to use on your rb30. 

what power do you want, and is it a 5sp or auto?

You can leave the stock comp and put it on e85 and run higher boost?

2 hours ago, FiXtUrE said:

Regardless to fuel it’s the boost/comp pressure that will determine if it gos pop or not.

what comp ratio do you think this thing has to run 100psi of boost?

 

  • Like 2

Lol… I doubt it’s running 100psi.

rb30 with 8:5:1 head gasket + stock mani with spacer adaptor to blolt on rb25 t03 (with ceramic wheel) and possibly stock dump depending where turbo sits + custom mid pipe + r31 house rb20det cat back + hr31 stock intercooler at a maximum 12 psi + nistune should the job with auto (400kw)

steel wheel t03 + r32 gtr or r31 house fmic + forgies with big boost, go for your life with manual if you can find a clutch up to the job 👍

  • Haha 1
7 hours ago, FiXtUrE said:

Lol… I doubt it’s running 100psi.

rb30 with 8:5:1 head gasket + stock mani with spacer adaptor to blolt on rb25 t03 (with ceramic wheel) and possibly stock dump depending where turbo sits + custom mid pipe + r31 house rb20det cat back + hr31 stock intercooler at a maximum 12 psi + nistune should the job with auto (400kw)

steel wheel t03 + r32 gtr or r31 house fmic + forgies with big boost, go for your life with manual if you can find a clutch up to the job 👍

Yeah I doubt these 6 second 200+mph cars are running the boost they say they are. 

I mean look at this guy claiming he is running 90+psi of boost and a 250 shot. 

Why can't they just be honest and say they are really running 12psi of boost. 

 

  • Like 1
  • Haha 2

It's basically Hollywood isn't it? I mean look at this! You can see the car on the dyno, see the data from the log.... 600KPA target. 

More like 82KPA target and a bunch of YouTube Hollywood magic showing fake numbers and fake data, right? 

 

  • Haha 2
9 hours ago, FiXtUrE said:

Lol… I doubt it’s running 100psi.

rb30 with 8:5:1 head gasket + stock mani with spacer adaptor to blolt on rb25 t03 (with ceramic wheel) and possibly stock dump depending where turbo sits + custom mid pipe + r31 house rb20det cat back + hr31 stock intercooler at a maximum 12 psi + nistune should the job with auto (400kw)

steel wheel t03 + r32 gtr or r31 house fmic + forgies with big boost, go for your life with manual if you can find a clutch up to the job 👍

What the hell kind of crack smoking joke is this? That is literally double the power possible with a stock ceramic shitter. When I'm talking about shards here, they can either be what you are on, or the pieces of turbine. Take your pick.

  • Haha 2

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

    • So for the wide band is a Bosch 4.9 correct for the Link G4+ along with a Can bus? Just get the Link gear or is generic ok too? Eg here: LINK LINK DIGITAL WIDEBAND CAN MODULE WITH BOSCH 4.9 SENSOR : KYP Performance House  
    • Bit difficult to follow. Have a look below and see what the standard R32 layout was like. Note there was a restrictor in place immediately before "turbocharged pressure control solenoid" that, if removed, magically got you 1 bar boost.
    • I might be way off the mark here.. there must be a T junction under the manifold. That takes manifold pressure through a check valve prior to the T, one side splits out to this bleed off orifice, the other straight to the wastegate actuators. 
    • Carrying out some engine due diligence before my first drive in a 260RS that has been in storage for 10+ years, and found two lines that are susposed to be plumbed into the boost control solenoid. One of the lines (the wastegate boost supply line) to actuate the gates, had a bolt in one end blocking it. The other line (main boost signal line) from the very rear of the intake manifold (RB26DETT) and runs up to the boost controller had this pill in the end of it as seen in photos. Other than the obvious (T28 Ceramic turbos might well be cooked)  Can anyone shed any light on if there is any validity at all with this mod, bleeding a constant fixed rate of manifold boost pressure off through this 3mm hole?  Is it deliberate?  Was this a 90s Jap mod done to RB26's? Or has someone just fitted this without any idea of what happens to ceramic T28s if they are not gate controlled?    
×
×
  • Create New...