Jump to content
SAU Community

Maximum Power On Stock Rb26-Bottom?

TP_

By TP_,
in Engines & Forced Induction

 Share

Recommended Posts

TP_ Contributor

TP_

Posted
Posted

Hi!

My Stagea 260RS is currently mapped to 575hp (497awhp), the guy who tunes my car told me to not go higher than 1.4 bars of pressure with my GT2530 turbos when running a stock bottom.

If I don't recall wrong, I've seen people here with ~600hp on stock bottoms.

A friend drove his R32 GTR for 80 000 kilometers with 560hp and a rev limit set to 8500 on a stock bottom RB26 over a 5 year period, the oil pump gears finally broke due to usage of launch for 2 summers.

How much boost/hp is safe?

Thanks

Mattias@Sweden

Link to comment
https://www.sau.com.au/forums/topic/408940-maximum-power-on-stock-rb26-bottom/
Share on other sites
The Dan Grand Master

The Dan

Posted
Posted

Hi!

My Stagea 260RS is currently mapped to 575hp (497awhp), the guy who tunes my car told me to not go higher than 1.4 bars of pressure with my GT2530 turbos when running a stock bottom.

If I don't recall wrong, I've seen people here with ~600hp on stock bottoms.

A friend drove his R32 GTR for 80 000 kilometers with 560hp and a rev limit set to 8500 on a stock bottom RB26 over a 5 year period, the oil pump gears finally broke due to usage of launch for 2 summers.

How much boost/hp is safe?

Thanks

Mattias@Sweden

Do you trust your tuner?

SiR_RB Grand Master

SiR_RB

Posted
Posted

Is this on E85 or 98 octane?

Mines making around 465rwhp stock bottom end for around 10'000kms so far on 98

No issues, compression still at 160psi each pot, done 2 drag days with another coming soon, on around 21psi

But I trust my tuner 100% and I'm prepared to rebuild "when" the engine has enough

Their is no magical limit depends on alot of variables like tune/condition of engine/fuel/ max revs etc etc

  • Like 1
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

If I don't recall wrong, I've seen people here with ~600hp on stock bottoms.

A friend drove his R32 GTR for 80 000 kilometers with 560hp and a rev limit set to 8500 on a stock bottom RB26 over a 5 year period, the oil pump gears finally broke due to usage of launch for 2 summers.

How much boost/hp is safe?

How long is a piece of string?

Depending on age, use, condition, servicing, fuel - and anything else you can think of - will depend on how long it will last.

Will it last forever? Highly unlikely. Have seen people with only 450rwhp end up having to rebuild after 2-3 years of circuit racing as the motors just started to breathe heavy. So not blown, and not tune related, just age and use.

If you can't/don't want to rebuild, then don't chase the power. It's as simple as that really.

  • Like 1
vh45tt Contributor

vh45tt

Posted
Posted

How long is a piece of string?

Depending on age, use, condition, servicing, fuel - and anything else you can think of - will depend on how long it will last.

Will it last forever? Highly unlikely. Have seen people with only 450rwhp end up having to rebuild after 2-3 years of circuit racing as the motors just started to breathe heavy. So not blown, and not tune related, just age and use.

If you can't/don't want to rebuild, then don't chase the power. It's as simple as that really.

thats very true.

GTScotT Grand Master

GTScotT

Posted
Posted

+1 how long is a piece of string. Have seen plenty of blown RB26s that were still in mostly factory trim (stock turbos, stock tune, etc).

I personally wouldnt put 600whp through one and expect it to last very long at all. My personal feeling for a limit on these things is 500whp, and I'd put a very forgiving 30,000 km life on it at most (street driving with some fun here and there). Some people will have seen more, most would have seen less. Thats just my opinion from reading countless posts and knowing people who have built such setups.

SiR_RB Grand Master

SiR_RB

Posted
Posted

Think also the main things are to keep oil temps under control with an aftermarket oil cooler

Run good quality engine oil (ester base 100% synthetic)

Keep intake temps down (turbos not at their limit pushing hot inefficient air down its throat)

Keep the rev limit sane (eg under 8000rpm)

Then you might have half a chance of it lasting abit longer

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Another little story of weird shit happening

      By GTSBoy · Posted

      I'm thinking that this is such a small part of the problem that you could easily forego the vac pump and just achieve 90% of what you need, which is keeping the gate open when off boost. It's not as if there are not already techniques to keep a gate fully closed under boost. After all, you have boost. Just use a wastegate actuator that will allow you to apply the boost on the appropriate side, just like every external gate out there.
    • No1
      R34 Gtt Wheel Offset Advice

      By No1 · Posted

      Heres another fitment photo. redrilled the pattern to 5x112, and threw my audi´s rims on. had to touch the upper control arms with grinder, because the "sharp corner" was sticking about 2-3mm on the tire path. i have the "fender lip" mostly cut off, otherwise these (too) would contact with it. 20x9.5 ET25 rear    265/30 20x8.5 ET20 front    255/30 they are temporary, and look too big for the chassis. searching for 19s to it.
    • niZmO_Man
      Spotted on the street....

      By niZmO_Man · Posted

      beautiful
    • niZmO_Man
      One Headlight isn't working - Driver Side Fuse Keeps blowing

      By niZmO_Man · Posted

      From experience, it will come back to bite you haha.
    • niZmO_Man
      At first I thought these were knock offs....

      By niZmO_Man · Posted

      Background: my BMW 225i hatchback (rebodied MINI/X1) came with 3x RE003 and 1x Goodyear Asymmetric something. The RE003 roared and slid around, the Goodyear side was quiet and grippy. Definitely my car was thrashed before it got sent to dealers. My brother also got RE003 all round on his old VA WRX STI, I wasn't impressed with them, car was loud so can't comment on noise. Anyway, Hankook stopped making/updating V12 Evo2. So bought S1 Evo3 runflats. Great daily duties tyre and not that harsh ride. Tyre reviews site/youtube rated them as best stopping in the rain and I believe them. Next set, Goodyear Asymmetric 5 non-RFT. It beat PS4 in tests and is like $100 cheaper, so put them on. Great tyre, more grip then S1 Evo3 but a tad noisier as expected, still rocking them. Next set I am looking to go runflats, probably the new Hankook Evo. Although the new Pirelli PZ5 did well in tyrereviews test. Or go Goodyear Asymmetric 6 which was top tyre last year. The V12 Evo2 on my gen5 Liberty GT wagon did great in cold condition (drove to snowy mountains for a day so my husky can feel his ancestor's roots). Super impressive performance for $120 each lol. Never skimp on tyres, brakes, suspension. There's old pics of my R31's crappy random brake pads bending in the caliper at Oran Park track day somewhere around here. Anyway, my 2 cents.
×
×
  • Create New...