Piggaz Posted April 25, 2016 Share Posted April 25, 2016 How is this possible i cant get more than 405rwkw turbos apparently outa puff ... built motor fair bit of head work although std actuators and inlet. I call bs unless huge intake workFuelExhaust Intake mods Cams Head work It can be done, but the right parts need to be employed. List everything... Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7717841 Share on other sites More sharing options...
r32-25t Posted April 25, 2016 Share Posted April 25, 2016 Your exhaust including dumps will make or break any build Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7717901 Share on other sites More sharing options...
XKLABA Posted April 25, 2016 Share Posted April 25, 2016 Once the turbos are out of flow you can then make more power by using what they flow more effectively/efficiently like comp ratios and cam timing etc E85 helps here to Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7717944 Share on other sites More sharing options...
XGTRX Posted April 27, 2016 Share Posted April 27, 2016 But don't you get into issues of spinning them too fast with a bang to follow? Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718714 Share on other sites More sharing options...
Mick_o Posted April 27, 2016 Share Posted April 27, 2016 (edited) CORRECT! ^^^^ Just ask Piggaz about that! Edited April 27, 2016 by Mick_o Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718717 Share on other sites More sharing options...
fatz Posted April 27, 2016 Share Posted April 27, 2016 yea just what you want in a turbo Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718718 Share on other sites More sharing options...
Dose Pipe Sutututu Posted April 27, 2016 Share Posted April 27, 2016 Once the turbos are out of flow you can then make more power by using what they flow more effectively/efficiently like comp ratios and cam timing etc E85 helps here to but how will the exhaust gases get past the 2x restrictors? unless you twin externally gate them.... then you might as well just get a single 1 Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718719 Share on other sites More sharing options...
fatz Posted April 27, 2016 Share Posted April 27, 2016 but how will the exhaust gases get past the 2x restrictors? unless you twin externally gate them.... then you might as well just get a single Mick and pigarse are about to be converted Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718720 Share on other sites More sharing options...
mr skidz Posted April 27, 2016 Share Posted April 27, 2016 -5's use gtx bearing cartridge now capable of twice the speed 5's will ever see. Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718722 Share on other sites More sharing options...
mr skidz Posted April 27, 2016 Share Posted April 27, 2016 (edited) The old plastic bearing cages weren't really ideal for high stress applications. Edited April 27, 2016 by mr skidz Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718724 Share on other sites More sharing options...
XGTRX Posted April 27, 2016 Share Posted April 27, 2016 The old plastic bearing cages weren't really ideal for high stress applications.Tell me about it. [emoji19] Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718726 Share on other sites More sharing options...
XKLABA Posted April 27, 2016 Share Posted April 27, 2016 But don't you get into issues of spinning them too fast with a bang to follow? Depends on engine size really, 30psi on a 2.8 will make them spin to fast, 2.6 not so much but yeah still getting up there Also by making the engine run more efficiently means the turbos don't have to work as hard for the same power Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718739 Share on other sites More sharing options...
mr skidz Posted April 27, 2016 Share Posted April 27, 2016 Tell me about it. [emoji19]What was the cause for yours to hand grenade Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718740 Share on other sites More sharing options...
XKLABA Posted April 27, 2016 Share Posted April 27, 2016 but how will the exhaust gases get past the 2x restrictors? unless you twin externally gate them.... then you might as well just get a single I have made 458awkw from GT-RSs on my 3.0 which run the same exhaust as -5s and Piggas has made 473rwkw with -5s on a 2.8 and I have been talking with a dude the has made 716rwhp from -10s on a 2.6 so I guess it comes down to how much power you want to make Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718741 Share on other sites More sharing options...
XKLABA Posted April 27, 2016 Share Posted April 27, 2016 Mick and pigarse are about to be converted Piggy yes, Me not likely depending on Piggies result I'm more likely to be converted away from RBs but still twin turbo Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718742 Share on other sites More sharing options...
mr skidz Posted April 27, 2016 Share Posted April 27, 2016 (edited) Going single also can be risky if your not willing to external gate to atmosphere, i know people who plumbed back gate into 3" exhaust and wonder why its a laggy pig. Edited April 27, 2016 by mr skidz Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718743 Share on other sites More sharing options...
Dose Pipe Sutututu Posted April 27, 2016 Share Posted April 27, 2016 you "could" do this.. 3" dump -> Cat (because we are sensible) -> 3.5" Cat Back... plumb gate back into 3.5" cat back.. bypassing the cat legal enough.. at EPA they won't be cracking gates. Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718746 Share on other sites More sharing options...
XGTRX Posted April 27, 2016 Share Posted April 27, 2016 What was the cause for yours to hand grenadeWho knows, bearings were perfect, no oil stavation or heat damage apparent. Running 26 psi on a built 26. Everyone threw their arms in the air, no one's fault and said show me the money for a rebuild. [emoji19] Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718747 Share on other sites More sharing options...
Piggaz Posted April 27, 2016 Share Posted April 27, 2016 Going single also can be risky if your not willing to external gate to atmosphere, i know people who plumbed back gate into 3" exhaust and wonder why its a laggy pig.That's not risky, that's stupidity. Change 3 inch to something that belongs on there. I bet everything improves. Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718766 Share on other sites More sharing options...
mr skidz Posted April 27, 2016 Share Posted April 27, 2016 That's not risky, that's stupidity. Change 3 inch to something that belongs on there. I bet everything improves.Agree, then go atmo and I bet everything improved even further especially in the spool Link to comment https://www.sau.com.au/forums/topic/463036-rb-2860-5-highest-hp/page/9/#findComment-7718787 Share on other sites More sharing options...
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