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Hi guys,

I recently finished my forged 25/30 all built and wired up the my garage by myself.

Parts consist of:

Mahle 86.5 pistons @ 8.5:1 cr

spool rods

arp gear throughout

nitto oil pump. using one 1.5mm restrictor, with the other blocked.

vct internal feed

ross race balancer

complete bottom end balanced

rebuilt head with std cams and valves

Performance valve springs

1.0 mm cometic headgasket

ebay inlet manifold 90mm tb

aeroflow fuel rail

1400cc injectors

ls2 coil plugs mounted as coil on plug

hybrid exhaust manifold

kinugawa t67 with t04 compressor

turbosmart 45mm gate

turbosmart boost solenoid

3in straight through exhaust

walbro 460

haltech ps2000 with racepak dash

currently on its run in tune, 288kw @ 17psi and only reving to 6k rpm on bp98

post-116505-0-22065400-1432201637_thumb.jpg

Edited by Pridenjoy

Forgot to post the final tune. After all the waiting, the end result is a little disappointing, expected a bit more grunt, but not over yet, a few things to sort out .

Going to beef up the fuel and exhaust.

Flex tune and see how it goes.

post-52098-0-09875000-1432205043_thumb.gif

  • 1 month later...

RB25/30 NEO

Spool rods

wiseco pistons

Balanced

Arp everything

N1 pump with billet gears and oil relief setup. and longer crank drive collar

ASR 8.5L sump

Standard head with 270-9.2mm cams no vct

performance valve springs

6x LS2 coils

cpc plenum

steampipe manifold

GT35 .82 rear internal gate

660CC injectors

420hp @22psi injectors at 85% duty cycle

Also couldn't get it to hold more boost up top (could of wound the pre-load up but decided against it)

BP98 fuel

Auto

post-78438-0-13197000-1435543598_thumb.jpg

  • 3 weeks later...

RB 26/30

BW S362 / 88-75

Fullrace twin scroll manifold

270deg cams

etc....

Dialled cams for low down at the cost of some top end. Boost is only 17psi while I get used to it, so there's a lot left in reserve.

0E5CABF9-BB4D-4833-86D0-457E5070507E_zps

  • Like 1
  • 3 weeks later...

RB30 bottom end, RB26 head

Forged rods / 86mm Wiseco RB26 pistons, CR about 8.7:1

HKS Step 1 cams 8.7 lift, 256in 264ex, exhaust mildly ported

ID1000

RawBrokerage T4 twinscroll manifold with two Tial F44 WG (1 Bar spring presure)

EFR8374 1.05AR twinscroll

3.5" exhaust

45mm screamer pipes

Made over 600hp on wastegate pressure:

post-30656-0-75662100-1438717840_thumb.jpg

700 with manual bleed valve (unstable boost dropping to 1.45 bar at redline)

post-30656-0-02418000-1438717848_thumb.jpg

95 octane pump fuel (as setup will go to the states next year in a R32)

Video:

Edited by AndyStuttgart
  • 2 weeks later...

Just had the first run in tune, not sure what I am going to get when it has the final tune, I will post the results. They said it was at 7500RPM ?

Nitto 3.2 Stroker Kit

PT6262 turbo

Custom 260 10.8 cams,springs and retainers

Haltech 34GTR ECU/Boost controller

3.5 inch custom exhaust ( as a DD as quiet as it could be without restricting flow)

Supertech 1 mm OS Valves set

RB 26 head, cleaned up

9Lt sump conversion/ Nitto comp Pump

Koyorad Radiator

Walbro 460Lt fuel pump, (see how it goes)

Haltech E-Flex Sensor kit

Other stuff needed to make it all work

Yokohama AD08R

Nismo Super Coppermix twin C Spec clutch / Slave Cylinder

Quaife Front diff

Modified Trannie

Nismo 2-way LSD back diff

t run in tune, not sure what I am going to get when it has the final tune, I will post the results

Just leaving the final Dyno to finish my tuning experience :)

98 pump@ 22psi = 437kw

E85 @ 22 psi = 462kw

E85 @ 25.5 = 475kw

Other Dyno is overlay of old tune 98 pump 367kw @ 22psi and new tune on 98 pump 437kw @ 22psi

post-52098-0-45066100-1439635319_thumb.jpg

post-52098-0-22397600-1439635813_thumb.jpg

  • Like 1

-Freddy copy plenum

-id1000cc injectors on big rail

-Sard fuel pressure reg

-Spitfire coil packs

-China replacement turbo

-Adaptonic computer

-Rolling automotive front mount

-80mm throttle body

Made 305.5rwhp (227.4kw) on 15psi

Tubos shit. Will make more with a quality turbo.

post-139776-0-43569300-1439903618_thumb.jpg

post-139776-0-61680400-1439903797_thumb.jpg

  • 2 weeks later...

26/30

E85 2000 cc inj

Twin bosch 044s and surge tank

Haltech platinum plug in

Gtx 35 1.06

Ported kelford cnc head

Kelford heavy valve springs etc

Tomei head gasket

Arp head studs

Kelford 272 274 10.85 lift cams

Rips stock bottem end with prep upgrade

Tomei oil pump

Rips 10l L sump and gredy oil cooler

426 kw at all 4

26 psi

Edited by danny14
  • 2 weeks later...

RB 25/30 Neo running E85

435 rwkw @ 23 psi

Nitto I beams

Custom CP pistons 8.8:1

Garrett GTX 3582 1.01 exh

Tomei 260 type B poncam

Mild port/polish head

Tomei dual spring and retainers

1500cc ID injectors

Walbro 460 intank twin 044 from surge tank

3" straight thru stainless exgaust

Custom stainless header

NPC twin plate

Retained VCT

post-46346-14416299316189_thumb.jpg

  • 3 weeks later...

attachicon.gifImageUploadedBySAU Community1410860879.685567.jpg

Gtx3076

Tial 44mm ext gate off housing

Lt12 ecu

Eboost street

850cc injectors

Hks 256 in 264 exh vct cams

Hybrid manifold

Forward facing plenum

Precision cooler

All through a built r34 auto with 3000 rpm converter

15psi boost

E85 and lt16c computer next month

post-84952-14434350682349_thumb.jpg

E85 lt16c Ecu 6boost manifold upgrades.

  • Like 1
  • 2 months later...

Hi guys,

I recently finished my forged 25/30 all built and wired up the my garage by myself.

Parts consist of:

Mahle 86.5 pistons @ 8.5:1 cr

spool rods

arp gear throughout

nitto oil pump. using one 1.5mm restrictor, with the other blocked.

vct internal feed

ross race balancer

complete bottom end balanced

rebuilt head with std cams and valves

Performance valve springs

1.0 mm cometic headgasket

ebay inlet manifold 90mm tb

aeroflow fuel rail

1400cc injectors

ls2 coil plugs mounted as coil on plug

hybrid exhaust manifold

kinugawa t67 with t04 compressor

turbosmart 45mm gate

turbosmart boost solenoid

3in straight through exhaust

walbro 460

haltech ps2000 with racepak dash

currently on its run in tune, 288kw @ 17psi and only reving to 6k rpm on bp98

UPDATE...

After the engine was ran in I strapped it down again which it made 320kw on 20 psi, and having iat problems.

I then fit a new plazmaman intercooler and ran it on the dyno with pump e85 making 374kw on 21psi, which is all the little t67 will do.

post-116505-0-55881400-1448771813_thumb.jpg

Edited by Pridenjoy
  • 3 weeks later...

Ok about time I posted in here..

Racepace Built RB26/30

Mahle 87mm forged pistons

Argo Rods

HKS 256 8.5mm lift cams

adj cam gears

Sard 700 cc injectors

Tomei Oil pump

Tomei Headgasket

Std Coilpacks

Std Valves and head

Power FC

3.5" Racepace custom exhaust

Walbro 255 pump

Garret 2860r-5 Turbo's

HPI dump pipes

Std manifolds inlet and exhaust

R33 GT-R intercooler

Std R33 GT-R Airbox

Balanced Blah blah

375rwkw @ 17 psi BP 98 (369 for the track)

post-723-0-21640500-1450217298_thumb.png

post-723-0-68835200-1450218003_thumb.jpg

  • Like 1
  • 2 months later...
Very similar build spec and result to acsplit above.
My goals are for a responsive track car I can daily on 98 - drive and fill up anywhere.
RB30 Bottom end w/ Ross Racing Pistons & Spool forged rods
Garrett 2860 -5 Twin Turbos
Tomei Expreme Dumps
Low comp 7.85:1 (to keep things safe on 98, YES I'm staying 98 for a while)
ARP M11 Head Studs
Nismo 0.9mm Metal Head Gasket
+1mm Supertech valves with Supertech springs & retainers
Tomei Pro Cams 260 10.25mm lift
ID 1000 injectors
Autronic SMC / 500R CDI (Super Old School!) firing through Splitfire coils
Adj cam gears
Nitto Oil Pump
Single 044 pump & 2L surge tank

12791116_1183587054999874_67586165268249

  • Like 1
  • 3 weeks later...

Had the car on the dyno today.

Still early stages at the moment. Just finished running-in new the RB25/30DET. Timing and fuel is conservative, purely as we ran out of time in the day to make improvements.

A quick power run on 22psi (E85) resulted in the following:

post-81-14588172696437_thumb.jpg

411kW at wheels on just shy of 20psi

428.8kW at 22psi

Aiming to run up to 30psi

Just leaving the final Dyno to finish my tuning experience :)

98 pump@ 22psi = 437kw

E85 @ 22 psi = 462kw

E85 @ 25.5 = 475kw

Other Dyno is overlay of old tune 98 pump 367kw @ 22psi and new tune on 98 pump 437kw @ 22psi

Update

Decided to go V-Cam :)

Lost a little up top, but it the injectors and Turbo were just about maxed, all good

The end, I hope :/

post-52098-0-49782600-1458846669_thumb.jpg

  • Like 1

Had the car on the dyno today.

Still early stages at the moment. Just finished running-in new the RB25/30DET. Timing and fuel is conservative, purely as we ran out of time in the day to make improvements.

A quick power run on 22psi (E85) resulted in the following:

attachicon.gifImageUploadedBySAU Community1458817268.954023.jpg

390.3kW at wheels at 18psi

411.1kW at 20psi

428.8kW at 22psi

Aiming to run 30psi

Video of the 22psi run:

https://m.youtube.com/watch?v=VhnlYVwQlBg&feature=youtu.be

  • Like 2

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As I tried to figure out if it was problem #1, I resolved problem #2 by sending my cluster over to Relentless Motorsports in Dallas, TX, whom is local to me and does cluster and ECU rebuilds. He is a one man operation who meticulously replaces every chip, resistor, capacitor, and electronic component on the PCB's on a wide variety of classic and modern cars. His specialty is Lexus and Toyota, but he came highly recommended by Erik of U.P.garage since he does the rebuilds for them on GTR clusters.  For those that don't know, on R32 and R33 GTR gearboxes, the speedometer sensor is mounted in the transfer case and is purely an analog mini "generator" (opposite of an alternator essentially). Based on the speed the sensor spins it generates an AC sine wave voltage up to 5V, and sends that via two wires up to the cluster which then interprets it via the speedometer dial. The signal does NOT go to the ECU first, the wiring goes to the cluster first then the ECU after (or so I'm told).  Problems/Roadblocks I first removed the part from the car on the underside of the transfer case (drain your transfer case fluid/ATF first, guess who found out that the hard way?), and noted the transfer case fluid was EXTREMELY black, most likely never changed on my car. When attempting to turn the gears it felt extremely gritty, as if shttps://imgur.com/6TQCG3xomething was binding the shaft from rotating properly. After having to reflow the solder on my AFM sensors based on another SAU guide here, I attempted to disassemble the silicone seal on the back of the sensor to see what happened inside the sensor; turns out, it basically disintegrated itself. Wonderful. Not only had the electrical components destroyed themselves, the magnetic portion on what I thought was on the shaft also chipped and was broken. Solution So solution: find a spare part right? Wrong. Nissan has long discontinued the proper sensor part number 32702-21U19, and it is no longer obtainable either through Nissan NSA or Nissan Japan. I was SOL without proper speed or mileage readings unless I figured out a way to replace this sensor. After tons of Googling and searching on SAU, I found that there IS however a sensor that looks almost exactly like the R33/260RS one: a sensor meant for the R33/R34 GTT and GTS-T with the 5 speed manual. The part number was 25010-21U00, and the body, plug, and shaft all looked exactly the same. The gear was different at the end, but knowing the sensor's gear is held on with a circlip, I figured I could just order the part and swap the gears. Cue me ordering a new part from JustJap down in Kirrawee, NSW, then waiting almost 3 weeks for shipping and customs clearing. The part finally arrives and what did I find? The freaking shaft lengths don't match. $&%* I discussed with Erik how to proceed, and figuring that I basically destroyed the sensor trying to get the shaft out of the damaged sensor from my car. we deemed it too dangerous to try and attempt to swap shafts to the correct length. I had to find a local CNC machinist to help me cut and notch down the shaft. After tons of frantic calling on a Friday afternoon, I managed to get hold of someone and he said he'd be able to do it over half a week. I sent him photos and had him take measurements to match not only the correct length and notch fitment, but also a groove to machine out to hold the retentive circlip. And the end result? *chef's kiss* Perfect. Since I didn't have pliers with me when I picked up the items, I tested the old gear and circlip on. Perfect fit. After that it was simply swapping out the plug bracket to the new sensor, mount it on the transfer case, refill with ATF/Nissan Matic Fluid D, then test out function. Thankfully with the rebuilt cluster and the new sensor, both the speedometer and odometer and now working properly!   And there you have it. About 5-6 weeks of headaches wrapped up in a 15 minute photo essay. As I was told it is rare for sensors of this generation to die so dramatically, but you never know what could go wrong with a 25+ year old car. I HOPE that no one else has to go through this problem like I did, so with my take on a solution I hope it helps others who may encounter this issue in the future. For the TL;DR: 1) Sensor breaks. 2) Find a replacement GTT/GTS-T sensor. 3) Find a CNC machinist to have you cut it down to proper specs. 4) Reinstall then pray to the JDM gods.   Hope this guide/story helps anyone else encountering this problem!
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