Jump to content
SAU Community

Recommended Posts

Could any of you blokes let me know at what level the std RB26 conrods tend to break.

I'm pushing high 300's with my GTR and the tuner said that on e85 the torque produced could be too much for the std rods to handle.

the motor has forged pistons etc but i left the rods std because when i had it built i didnt think i was going to attempt to push for 400kw

standard rods will be okay its more an issue with the rod bolts... when it was built did they upgrade the bolts?

keep the rev limit sane and don't let it detonate and you should be okay

R34 GTR

Autronic SM4

Injectors

T04z turbo kit

Exhaust

Fuel pumps

Nitto head gasket

Drop in cams

STANDARD BOTTOM END

450kw @ all four wheels.

Does e85 help with engine longevity? The higher ron is much safer right, but the higher boost probably alleviates the buffer gained with better quality fuel.

Does e85 help with engine longevity? The higher ron is much safer right, but the higher boost probably alleviates the buffer gained with better quality fuel.

If you didn't up the boost and ignition it would, but everyone does up the boost and ignition so the extra buffer is now gone.

T04Z/33psi/450 @ treads on E85 is an interesting result. Guess that shows the difference when people build motors and pay attention to the small things that overall make up the bigger picture and allow you to make such figures with 6-8psi less and on PULP.

Does e85 help with engine longevity? The higher ron is much safer right, but the higher boost probably alleviates the buffer gained with better quality fuel.

Well its Sucrogen E85 - so not the E85 you or I would get from the pump, nor is it the same price (roughly $2.5/L IIRC)

Do you remember the Sucrogen rep/owner or whatever that came on here and blew up @ everyone a while back? lol... Cause it's the same mob if memory serves me correct. That was a good thread. I should try find it for lols.

First price I got from Tas was about $350 return.

That'd probably include a trip to syd and back, or do they fly direct from tas?

Not to mention that you'd also need to have no luggage, leave at 4am, have even smaller than normal seats, etc.

Hi there, got my car tuned today at Pits on the gold coast.

Mods as follows.

R32 GTR

RB26 bored, decked, cleaned, balanced and the crank ground.

Ross pistons, total seal rings, Spool Conrods.

Head is mildly ported, re-seated etc etc, Tomei 270 dur 10.8 lift cams, Brian Crower springs.

N1 oil pump, tomei oil restrictor.

1200cc injectors, 2 x 044 pumps, 3L surge tank.

Haltech E11v2

STD coils at this stage

115mm intercooler, chinese one i'd say, $400

70mm Billet turbo by Mark at Mr Turbo, Gold Coast

60mm wastegate, ebay cheapie.

4 inch exhaust all the way with 1 straight thru muffler.

twin plate OS clutch.

Tuned today on E85 from the pump, made 564 Hp on 26 psi, 528 hp on 23psi, and 501 on 20psi.:cheers:

Maxed out the injectors at 26 psi, looking at ID 2000's for the next tune. hopefully crack 600 which I don't think will be a problem.

So I went to the T and T last week and ran a best of 10.9 but at a whopping 138.5 MPH, needless to say they booted me out, but I was happy!!:action-smiley-069:

stock box ??

Yep stock box but it's not happy!

Had to be nice to it on the launch (if you call 7K nice) but getting into 3rd was a struggle, hit the limiter right on the 400m mark in 4th gear, Limited to 8300 rpm

Im looking to sell the car soon but would like to see 650ATW with Id2000's first, If anyone is looking for a good GTR it'll will be around $25,000 with new paint.

The car is well built and will be reliable, (apart from the g/box)

Could any of you blokes let me know at what level the std RB26 conrods tend to break.

I'm pushing high 300's with my GTR and the tuner said that on e85 the torque produced could be too much for the std rods to handle.

the motor has forged pistons etc but i left the rods std because when i had it built i didnt think i was going to attempt to push for 400kw

mid 4's happily, more than that i cant attest too.... as i wont push a customers 26 past 450kw on std engine...

  • 1 month later...

made it in by .5 of a rwkw :D

400.5rwkw

2530's

smallish cams, 256

Powerplus E85

mid to high 21psi

Racepace adj cam gears, all for response (let the E85 take care of the top end)

built 26, not 100% on pistons hence no 24psi runs etc.

400_a0001.jpg

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

    • After using a protractor for an actually accurate assessment of what is required,  and by NOT using my uncalibrated eyeball I worked out I need a 25° silicone bend from the TB ro the MAF, but, my choice was either a 30° or a 23° (23° is a weird spec), so I grabbed the 23° one from Raceworks I also grabbed 1mtr of 3" straight from Just Jap, I needed 350mm, but they only had 300mm, or 1mtr lengths....meh Also ordered a 1/2" hose bulkhead fitting from fleabay, this has a smoothish mushroom looking head (they are designed for below the water line of boats) that will fit inside the bend, the hose bit and threaded bit looks to long, but nothing that a hacksaw cannot fix if required, the hose will then just get jamed on the threaded bit up to the retaining nut Fingers crossed and the unsightly amount of hose clamps will be reduced down to 4 once all the parts arrive 
    • Oil change does not trigger code 21. Code 21 is for coilpacks primary side connection. You can try to clear the code with a battery disconnect, hold down the brake pedal to drain capacitors through the brake lights with the ignition on for 10-15 seconds before you reconnect the battery. I have seen R35 coil conversion permanently cause this code with no ill effects so it might be the resistance it wants to see isn't quite right on one or more coilpacks. Could be inside the ECU, could be the harness, could be a coil. You can test it all if you want or just ignore until the car actually starts misfiring.
    • I forgot you have a Nistune ECU. Use Nistune to do all the tests I mentioned instead of faffing with 30+ year old electrical connectors. You can read MAF volts off that too, there are reference values in the service manual to tell you roughly what it should be in different conditions.
    • No. I think it might be the AFM. Hence the use of the terms "swaptronics", which implies the use of swapping out electronics for the purpose of diagnosis. It's about the only way to prove that a small/niggling/whatever problem with an AFM or a CAS or similar is actually caused by that AFM/CAS/whatever. A known good item swapped in that still gives the same problem is likely to be caused somewhere else. They're all the same. Spraying AFMs with cleaner is an each way bet between cleaning it and f**king it.
    • Oh wow! This might actually work amazingly. Do you know the ratio of the diff? I was told the only thing you need to make sure of is if the front & rear diff ratios are the same. Ours is a 4.083 Thanks!
×
×
  • Create New...