Jump to content
SAU Community

Peak Power On Standard Internals

nemo

By nemo,
in Engines & Forced Induction

 Share

Recommended Posts

GTRsean Grand Master

GTRsean

Posted
Posted (edited)

Stock R33 bottom end before I rebuilt it (not due to failure of bottom end, just crank keyway) managed 352RWKW for ages no probs and reved her up to 8500rpm. Serviced it every 5000k and then 3000k's though, oil and filter.

600HP at the crank is a well known limit for a stock bottom end.

Rods are good for 400rwkw plus.

Pistons are pretty good, but will only take so much detonation/poor tuning before they fail.

Crank will take a lot, cars running up to 1000hp.

Oil pump and drive is a big problem with 32 cranks especially.

Blocks are good for a lot, unless bored out excessively, 1991,1992 had issues with cracking. N1 block (24U) is the serious block for big power...

Thats a quick rundown, other guys will add what I have missed. There is also a s%#t load of info when you do a search too.

Cheers.

Edited by GTRsean
nemo Contributor

nemo

Posted
  • Author
Posted
Did you try the search button?

http://www.skylinesaustralia.com/forums/Po...+internals+rb26

There are plenty more threads where that came from too.

Please have a search around.

na i didnt even think about it, sorry guy and gals.

so with what i have read and researched 315kwatw is a safe power output for my `93` 32gtr?

the next stage of my car mods will be a engine rebuild but not for another 6-8 months (to raise funds), ive had garrett gt2860r turbos put on about 3 months ago and with them running at 40% ( about 10lb boost) the car still made 315kwatw, when they tuned it i told them i wanted it at a very safe level for standard internals but really when it comes down to it i have know idea whats on the inside, for all i know it could be chocka block full of jun parts.

and if anyone wants to know martin donnan tunes my car

cheers

noone Experienced

noone

Posted
Posted

Usage makes a huge difference my 32gtr let go on the track making 427 hp at the wheels on a stock bottom end

I suspect would still be kicking hard of it wasn't used on the track. No oil mods just a catch can and baffled rocker covers!

next on will have all the oil control mods under the sun. there is a huge thread on oil control mods for drift track on here just search

sydneykid started the thread I think.

nemo Contributor

nemo

Posted
  • Author
Posted
Usage makes a huge difference my 32gtr let go on the track making 427 hp at the wheels on a stock bottom end

I suspect would still be kicking hard of it wasn't used on the track. No oil mods just a catch can and baffled rocker covers!

next on will have all the oil control mods under the sun. there is a huge thread on oil control mods for drift track on here just search

sydneykid started the thread I think.

i only use the car as a weekend cruz car, i havent had it on the track yet living in sa no one has much of a chance gettin their car on the track

STATUS Grand Master

STATUS

Posted
Posted
Just wanting to know the limits of a rb26 before u should put forged internals in it, or what power has people got in their rb26 with standard internals, mine has 315kwatw.

we ran cats race car (r32 gtr engine with 100,000+ kms) at 340rwkw for 2 seasons in da before she killed it doing donuts :P

Johnny Veteran

Johnny

Posted
Posted
we ran cats race car (r32 gtr engine with 100,000+ kms) at 340rwkw for 2 seasons in da before she killed it doing donuts :)

I remember seeing her in da dvd serious performance 7; seemed so innocent but she will blow your bottom end.

ive spent around 20k... lol

Not bad mate; pretty much a whole car worth.

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

    • Erelyes
      Ceramic turbine damage to engine - what did yours do?

      By Erelyes · Posted

      Ha, well, it's been.... a bit of a journey. Things have taken much longer than I'd hoped. I'll probably put up a thread at some stage. Hopefully soon. The car's not done any kms since my update in June though, put it that way.
    • Dose Pipe Sutututu
      M35 Aftermarket Fuel Pump

      By Dose Pipe Sutututu · Posted

      Here's the chart for fuel pressure vs. current draw, assuming your base fuel pressure is 3 bar and you run like 0.5bar boost on WOT, you should only momentarily hit 9amps here and there. (Ignore my prev post, I cannot read a chart these days it seems)
    • GTSBoy
      RB25 Drama's

      By GTSBoy · Posted

      Those comp test results are not hideous. Whether they are accurate or not (ie, when that comp tester says 140 psi, is the real pressure120, 140 or 160?) is unknown to us. The state of the battery used to crank it over is unknown, etc etc. Many people around here would say that the absolute values and the spread are perfectly fine to just add boost and keep going. I personally would be happier with a narrower spread than that, but even the diff between 125 and 145 is not terrible. That one cylinder at 125 though, has probably copped some damage relative to the others. You should inspect the valves seeing as you've got it open. Do you know how to measure installed ring gaps? That, and an inspection of the rings themselves, is how you will determine whether they need to be replaced. If you're not good to do these things, take the block and the pistons and rings to a shop that is, and ask them for the go/no-go on them. Do the bores need a hone at all? If so, you might well be justified in getting some different pistons in order to get away from the ring supply problem. Whether you're happy to spend a lot more money right now, on more gear, rather than less money, but an amount that looks stupid given that you will only get a handful of rings in exchange for that money, is for you to decide.
    • iain_ST44GA
      M35 Aftermarket Fuel Pump

      By iain_ST44GA · Posted

      also possibly backed up to my filler and shat down it! 🤣
    • Julsmadrid
      RB25 Drama's

      By Julsmadrid · Posted

      Ok so i would love some advice here please, i purchased an R33 a few months back and its had a few mods done to the engine, its an RB25det running a Master ECU, 1200cc injectors, bigger turbo, oil cooler, oil filter relocation kit, Spool H-beam rods, acl/ross pistons. When i removed the motor from the vehicle (as its getting a respray) i thought i would compression test it and these are the following results. Cylinder 1-145psi, Cylinder 2-143psi, Cylinder 3-125psi, Cylinder 4-145psi, Cylinder 5-140psi, Cylinder 6-135psi this test was done with the motor on the ground and powering up the starter motor. I dropped the sump and found broken oil squirters on cylinder 3,5 and 6. I was told my rings are probably worn so i stripped the motor completely to get a new set of rings for it. The trouble is no one has these rings anywhere and they have to be custom made by Ross over in the states and will cost about $600+$200 delivery. My question is how can i tell if my rings are at fault and if they are still ok and is this price ok for a set of rings?
×
×
  • Create New...