Jump to content
SAU Community

Recommended Posts

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

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?

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

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

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.

+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.

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


  • Similar Content

  • Latest Posts

    • Each to their own I guess  Me, I put just as much time into cleaning inside of the cars as I do on the outside As for getting wet, it is really no different than steam cleaning the carpets at home, apart from the cars carpet dries alot faster than the house, again, I only do it in the hotter months and leave the car opened up for a few hours As I only do it yearly, it is just before I do the diff and gearbox service, so I clean the carpets, then it's up on stands, wheels off, service, clean the undercarriage,  grease the bushings and do a nut and bolt check on everything  Disclaimer: I typically had all the time in the world to kill when I was working 馃ぃ, so spending a full day or 2 cleaning, serving and "looking at stuff" was,  easily achievable, and a fun mental therapy day As for time to kill, I retired last Wednesday, so apart from my physical training, my days are filled with lots of random jobs around the house and garden...."Idle hands are the Devils something something" I am also buying a new house sooner rather than later, I'm actually looking at a potential property tomorrow, I'm looking forward to getting a car hoist as I'm starting to get to old to crawl around under a car, I can only imagine all the undercarriage cleaning and looking at stuff when that gets set up
    • Yeah, I'm not interested in wetting the carpets, and I don't care about brown dirt/dust that lives deep in the pile or underneath. It's not like I crawl around on them in my birthday suit or eat dropped food off them (because there is never any open food in my car). The seats are alcantara (cheap Chinese imitation alcantara, to be sure!) with barely 1" of foam pad behind the surface. That's not getting wet either. Any car that I would be happy to get the interior wet, I would not care to put the effort into.
    • We have one that holds 2.8L of water. On floor carpet that hasn't been touched in 2 or 3 years, will take a minimum of 2 fills of the tank to do a bedroom, and that's going AROUND the bed.   In the cruiser, I used an ENTIRE 2.8L tank, just on the front passenger footwell. But it had some fungus growing, and had been full of mud from being used as a 4WD for many years. I can do that floor again, and it will still pull mud out. However, the water now only looks dirty, not pitch black and leaving full sludge in the bottom of the tank it sucks back into. Oh, and, this is about a $1500 unit.
    • This is mine, works a treat for the cars, suction is good, I use the Bissell clean and protect stuff I have found giving it a good spray and light scrub with the soft brush on the head of the nossle for carpet, and a rub with a microfibre for cloth seats and cloth door trims, prior to another quick spray before vacuuming it up works the best @GTSBoy You would surprised on what it gets out of carpet and seats that actually "look" clean, I recommend that you test drive yours when you have a little time to kill, then post pics of the muddy looking water that I believe you will find
    • I think even the "commercial" capacity ones that you would hire from supermarkets etc wouldn't have the capacity to do all that much in one go. I will go through half a dozen tanks of solution and dumps/rinses of the waste tank for one little 2 seat sofa. Or similar for one 6 footish rug. That's the price you pay for something small that only takes up a bit of cupboard space, instead of something that takes up the entire laundry cupboard or half the shed.
  • Create New...