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Build Thread

  1. Hey guys just wired in a 25 into my r31 the car runs and starts fine but am having trouble understanding how to wire up the vct/o2 my understanding is they are powered off the same wire, I’ve read elsewhere that one wire for the vct goes to ign 12v and the other to ecu pin113, hoping some can shed some light for me as there are only 2 conversion guides I can find but one is just a alteration of the other and isn’t any clearer to me, cheers
  2. Hey all. I know there is a plethora of information about Hypergear turbos on these threads, with Tao providing a heap of Dyno results. I was looking at Hypergear's ATR45-SAT (Special application turbocharger) as it will directly bolt on to my existing setup, with some basic fabrication/relocation of some intake piping, and will suffice for my 300-350rwkw power figure I am after with my current setup for street use. Only thing is he doesnt provide any specs from what I can see on the size of the housings, or any sizings of inlets/outlets, which I thought would be basic information you would provide there for your customers to see when deciding to choose your product, like other turbo sellers do. Has anyone got some of their own feedback and dyno results on that specific turbo? Was also looking at Kinugawa turbos that were a direct bolt on, and had heard good things about them, I dont think theyre as popular as they used to be, but has anyone had one recently theyve purchased and used? Any other recommendations with reasoning as to why they went with it?
  3. Hey guys. So my bottom end has a potential issue, engine comes out to drop the sump later this week to see exactly what, has a bit of a knock on cold start up that goes away. My heads were recently done due to a found exhaust valve leak, so upgraded springs and retainers, and upgraded drop in cams while it was out. Heads went back on and we found the bottom end was knocking at high RPM (not very loud as was heard through the knock box and ear muffs) when they were doing a dyno run with the new head on. Car hasnt been started up again since I have the option to purchase a freshly machined and honed RB25DET block, with a R34 GTR RB26 Crank, Nitto rods, nitto oil pump, new head studs, main studs, new main bearings for $3500, will need to get my own pistons though as he used the pistons for his RB25/30 build he ended up doing instead, and has had the built block sitting for a while and wants to clear it out. Block had only been assembled for test fitment of everything, then pulled apart so he could use the Nitto Pistons he had in his RB30 build OR Get my current RB25DET Neo bottom end fixed up, possible machining, new bearings, new rings, etc etc. Wasnt looking to do forged internals but could go down that track Was looking to make 300-350 rwkw for now, maybe 400rwkw, as I do have all supporting mods already outside the engine to go to that power (besides the turbo but will upgrade that while im at it) Will i see much of a difference using the RB26 internals? I know the crank has a longer stroke, what advantages will I see and is it worth just getting the almost-ready-to-drop-in bottom end and going with that, or freshening up my stock Neo bottom end? thanks in advance
  4. Hey guys, I'm back with another tutorial that I made (thanks to isolation). This is on a how to swap the RB25 bottom end to a RB30 bottom end with a 25 head in a R34 (R33s and R32 should be kinda similar i think) that I did last year. I had to split the tutorial into 3 parts (each part is like 15mins). It starts with preping the RB30 block, to taking out the RB25, and then putting in the RB30/25 and starting it. The reason why I did an RB30 swap was not because of an upgrade but because my RB25 was showing up bad results on the comp tests and there were cheap RB30s going around (I actually made money out of selling parts from the RB30 that I didn't need lol). The goal for this car is only to be a daily responsive streeter on pump fuel (won't ever take it to the track). It's my first time ever doing something like this (I had no help, did this on my own), so take it as a guide line. If I were to do this again, I would definitely use a proper engine crane and take the whole engine out including the gearbox next time, but yeah... this was a real poor mans job and it got the job done and I've been driving this RB30/25DET Neo everyday to and from work as my daily and I've never had a problem with it (have been clocking 5000+ Kms on it as of 10/4/2020). Here's the videos: Part 1: Part 2: Part 3: I'm really happy with the outcome. Considering I knew nothing about RBs or any engine before I bought this R34. I learnt everything from researching (a shit load) on these forums, so thanks SAU, here's me giving back. The car ended up making 323.8 HP on the dyno with my OP6 highflow turbo which is a bit too small for this engine. So I will go with a bigger one in the near future. List of mods on my car previously that I brought over to the RB30 swap: HyperGear G2 RB25DET OP6 highflow turbo with ballbearing 3" turbo back exhaust 100mm thick FMIC Splitfire coil packs Xspurt 525cc injectors HDI EBC Nistune ECU Z32 AFM Walbro 255lph fuel pump (hard wire mod) 98RON Exedy HD clutch External oil cooler Koyorad all aluminum radiator Just something to add here on the side if anyone was interested (kinda like a build page, but I might as well put it here). This was my whole budget explained: So the total amount that I spent on this build/recon/swap was $3415. I bought a complete RB30 engine (without the box) for $150. Apparently this engine was used in a TAFE course for mechanic students to practise timing stuff on, so the pisons had heaps of screw driver marks on. A recon was in the picture anyways because I want this engine to last for ages. So I only wanted to keep the block, crank and rods. I sold everything els (head, alternator, ecu ect) for $240. That's already a profit of $90 lol! The reconditioning of the RB30 block and RB25 head was the most expensive out of the whole budget costing $1420. The recon from Harris Engines in Perth: $400 - Bore and torque plate hone $190 - Face block $180 - Machine and fit crank collar $90 - Acid bath $90 - Face/deck RB25 head $50 - Acid bath head $90 - Face flywheel $150 - Fitment of pistons to rods $180 - Balance rotating assembly All other things: $270 - 1mm oversized Hypatec RB30ET set of pistons + Hastings Rings $253.45 - RB25 ARP Head stud kit (202-4301) from wolf racing $261.25 - RB25DET Neo genuine nissan gasket kit $106.49 - RB30 ACL race main STD bearing set $88 - RB30 ACL race conrod STD bearing set $30 - RB30 small end rod bushes/bearing set $99 - RB crank collar from Lewis Engines $38.75 - RB oil restrictors (one 1.5mm and one blank one) $38 - RB30 brass welsh plugs $13.71 - RB spigot bush $38.98 - RB genuine nissan timing belt fastner kit $41.5 - genuine nissan thermostat $78.14 - Genuine nissan R34 pull type thrust bearing $110.5 - Genuine nissan RB25 exhaust manifold fastner kit $43.2 - Dayco 94407 (T866) timing belt $72.11 - Mamba RB30/25 turbo water braided line kit $81.59 - Braided -4AN hose + fittings for the external VTC feed from Enzed $330 - Dyno tuned car by C-Red in Perth All of the labour except for the recon and tuning was done by me.
  5. Hello wondering if someone could tell me if a 38mm external wastegate would be adequate for a 25det running a psr 3076 .82 only looking for around the 300kw mark (or there abouts). My top mount has a 2bolt flange for the wastegate and as far as I can see anything over 38mm is v-band, if possible I’d like to not have to modify the manifold, thanks in advance sorry if this has been asked but I could not find any threads about it.
  6. Hey guys I have a r31 that I’m converting to a rb25 I have put a ffp on and the cable I got with the motor is miles to long, just wondering if there is a shorter cable out there I can buy, cheers 🙂
  7. hi there i got a HR34 and it stop start i dont know why when i try to start the car it crunk but did not start and when i stop crucking it i get a sound from the trriger ( 3 or 4 tiking sound ) with a engine flashing i change everything and look at the timming for the engine every thing ok i got a haltech plug in ecu this a video for what happening
  8. Hi people I’ve got an rb25det neo. Oil pump has been reconditioned. I’m getting consistent oil pressure, however, it’s quite low. At 80•c at idle it’s about 0.8bar and highest it ever gets at 7k rpm is at 3.2bar. 15w50 fully synthetic. I have an aftermarket sensor that is running to the maxxecu. My question is, is my sensor in the correct place? It doubles up at a temp sensor. If I wanted to check it with a mechanical guage, where would I plug it in?
  9. Hi Guys, The time has come to move on from this project and onto the next one. This is a heavily modified example of a 1993 Nissan 180SX with over 100k spent on the build. Detailed mods list is below as are photo's of how it currently sits. Car was featured in Fast Fours when it had the previous motor setup in it. BODY (over 30k spent on fab work alone which was all carried out by Roadrunner fabrications) 1993 Nissan 180SX Custom wheel tubs (suit the lines of the bay alot better then trailer guards) Rear guards cut higher to fit bigger wheels and metal flare to protect wide body Custom gearbox tunnel to give plenty of clearance to the RB25 gearbox allowing for easy removal of box Custom raised floor section for exhaust from firewall back allowing the dump pipe to tuck up above the chassis rail Custom removable front end rad support Completely seam welded front to rear CAMS spec weld in full cage cage goes through fire wall to strut towers aswell All holes in firewall welded up and smoothed over Genuine BN Blister full kit including front and rear guards (over 3.5k for the kit alone) Fiberglass vented bonnet Type x tail lights and cente panel Custom fixed headlight setup Custom cover over spare tyre well sealing fuel system off from the cabin Custom bash bar in place of front reo All sound deadening removed front to rear New windscreen (replaced after cage was done) Tinted windows Freshly resprayed gloss black outside and green inside ENGINE S15 SR20DET Tomei Easycams 256/264 10.5mm Tomei Rocker Arm Stoppers Custom rocker cover with twin -10 breathers Engine tested with even 160psi comp accross all 4 cylinders and 2% or less leakage per cylinder before going in TD06-20g 8cm rear with allow elbow welded on BRAE Steam pipe manifold Precision 46mm wastegate with screamer pipe Custom 3.5" exhaust tucked up as high as possible into twin 3.5" stainless tips. Has a removable muffler at the rear and is currently running as a straight through exhaust. Speedflow fittings and teflon lines used throughout DRIVETRAIN RB25DET box with New PAR 1-3 straight cut gears, billet input and output shaft, new genuine Nissan syncros, bearings, forks (rebuilt less then 100km ago) Custom bell housing to bolt the rb25 gearbox to the motor Exedy single plate clutch (less then 100km on it) Custom 2 piece tail shaft to suit RB25 box Custom shifter to suit gearbox position Custom gearbox mount R32 gtr rear end including diff, driveshafts and hubs R32 gtr diff rebuilt less then 100km ago with additional nismo clutch plates making it a full 2 way mechanical diff R32 gtr driveshafts rebuilt less than 100km ago FUEL SYSTEM Bosch ID1000 1000cc injectors (less than 100km old) 2x Bosch 044 pumps 600hp Denso feed pump Custom 4L surge tank Pumps and surge tank custom built into spare tyre well and custom cover completely seals them off from the cabin BPP Billet fuel rail kit which allows you to swap to top feed injectors whilst retaining factory plenum (to keep mid range torque) Turbosmart FPR-2000 Fuel pressure regulator Twin -6 alloy feed lines with a -8 return (no factory lines used and have been removed) Speedflow fittings and teflon lines used throughout ENGINE MANAGMENT/IGNITION Vipec V44 ECU M&W Pro 16 CDI 6x Bosch coils (only 4 are used 2 are spares) Custom top gun leads SUSPENSION/BRAKES Driftworks CS2 coil overs Driftworks adjustable traction, camber and toe arms in the rear Driftworks adjustable castor rods in the front Driftworks adjustable lower control arms front and rear Driftworks front and rear knuckles (50mm roll centre correction, improved geometry and more lock) Driftworks solid cradle bushes and diff bushes Cusco adjustable tension rod brace Modified s15 rear cradle (30mm increased track over s13 cradle and improved rear gemometry) Tien tie rods and tie rod ends Driftworks offset steering rack spacers Reconditioned S14 steering rack New rack bushes R32 GTR front calipers with Ferodo ds2500 pads and slotted rotors Freshly rebuilt S15 rear calipers with Ferodo ds2500 pads and new rotors Custom Hydraulic hand brake Custom modified pedal box with adjustable front & rear bias (no booster) WHEELS/TYRES Weds Kranze LXZ 18x9.5 -16 Mid disk front, 18x11 -15 Lo disk rear Have 8 of these in total, 6 rears (all 18x11 -15 Lo disk) and 2 fronts. 2 of the rears are brand new, 2 have been used for 1 track day and the other 2 are as old as the fronts. Brand new Achilles ATR 265/35/18 rear Falken FK452 225/35/18 front (less than 50km old) INTERIOR/ELECTRONICS S15 dash S15 cluster Custom carbon fibre switch panel which contains all switches for the car including lights, indicators, window switches etc Carbon fibre door seals Saber 60mm water temp, oil temp, fuel pressure and oil pressure gauges with warnings and recall Turbosmart eBoost 2 AEM Wideband o2 gauge with sensor mounted in dump pipe Sparco Evo 2 fixed back drivers seat solid mounted to the floor Takata 4 point harness Vertex 330mm steering wheel (would like to keep this) with quick release boss kit Car has been completely rewired front to rear with no factory wiring reused. All wiring has been tucked and very little of it is visible. Battery mounted in battery box behind where passenger seat would be ENGINE ACCESSORIES/COOLING Custom 5L oil catch can with external drain Custom coolant overflow Custom power steering reservoir Saber 42mm radiator modified to allow 2 16" thermos to mount to the front of it Saber intercooler with modified end tanks flipped upside down and custom mounted just in front of radiator allowing for short intercooler piping Custom intercooler piping designed to be as short as possible Saber 17 row cooler PWR 12 row power steer cooler All the lines throughout the car are braided teflon and silicon vacum lines with speedflow fittings (over 5.5k spent on fittings and lines alone) PHOTOS And an old one with the previous seats in it to show the cage better Car is currently tuned for reliability making 270rwkw on 20 psi and is tuned on E85. The car is complied with no accident history and was registered until rego ran out. It can be registered again if you wish to with a blue slip. No corners have been cut on this build and everything is overkill for the power it is making which has been designed that way so it is as reliable as possible. I am after 36k which includes all 8 rims and a 2 year old 15 foot beaver tail trailer which the car gets onto at this height. Can sell without rims or trailer if need be. Will only swap for an R34 gtr with necessary cash adjustment. Best to contact me on 0403858714 and serious buyers only please. Located in Rouse Hill, NSW, 2155. Plates only for display purposes and are not included. Thanks, Brett
  10. stripping a s2 rb25det with 110,000km, all parts pictured are available. - cylinder head - bottom end - power steering pump - alternator - looms - coilpacks - intake manifold - injectors anything else you can think of. located melb western suburbs call or msg 0424999936 for prices and to arrange pickup.
  11. Selling the complete engine and 4 spd tiptronic transmission out of my R34 Skyline It made 225 rear wheel KW @17psi through the auto Transmission has a MV automatics shift kit, Shifts are real solid. ECU has NISTUNE in it. It has done 125,000km and is running great, regularly serviced. Comes with the following -NEO RB25DET Engine -Transmission with shift kit -Engine and trans wire harness -ECU with nistune -HKS 2540 Turbo (GT2876), with braided oil and water lines -Full 3" Dump pipe to the cat. -Z32 airflow meter. Engine will still be in car for another couple of weeks if you want to see it running and driving, If someone wants to buy it Il pull it out straight away. Im seeling it as Im going different engine and trans $3250 ONO Located on the gold coast Mob: 0402 33 77 94
  12. anyone have any RB20/25 extractors sitting around?
  13. Hey guys selling RB25 R33/34 na exhaust headers with catback exhaust No holes or leaks anywhere 2.5" pipes with highflow cat exhaust was put on by Pipewerx in Brisbane pick up in rockhampton or surrounding areas (will deliver if close enough) or can ship at buyers expense looking for around $300 ono or swaps for any parts of interest (check other topics) contact either through here or on 0458585306
  14. selling my spare rb25 box. turbo box out of low km r33. no noises or any problems of any kind. upgraded to ppg box and still have one spare so dont need 2. location is toowoomba will organise freight at buyers expense. chasing 1300 ono i am negoitable within reason. text ash on 0427852404
  15. Rb 20/25/26 OS Giken adjustable cam gears. Condition : New. $200 R32 gtst - Rb20 Clear timing belt cover. Condition : New. Might fit other models? $80 Or Both for $250. Pick up only. Clayton. 0432 200 547
  16. Turbo Had only been on the car for on track day, around 200k's. Unfortunately it doesn't suit my engine setup, being a RB26 with cams, better suited to a stock RB25, 1JZ or even SR20 It comes with pretty much all the stuff it did from Kando, apart from the exhaust vband, its welded to my dump pipe now. As you can see in the pictures, it has a 90 degree aluminium bend welded to the compressor cover, which is also of the anti-surge breed. There is nothing wrong with the turbo at all, it worked well, but the exhaust is just too small for my engine, it made around 270kw at 18-20psi on 98 Price: $700 plus freight Please either PM me or send me an email, [email protected]
  17. best message me bout this on 0421314199 $650 firm non neg paid $1000 for it 2 months ago put it on my rb20 for a week and took it straight off cause it was to laggy for my rb20 and my set up. only run it on 14 psi can run up to 20psi sms me for pics of the hiflow plate etc. cheer john.
  18. best message me bout this on 0421314199 $650 firm non neg paid $1000 for it 2 months ago put it on my rb20 for a week and took it straight off cause it was to laggy for my rb20 and my set up. only run it on 14 psi can run up to 20psi sms me for pics of the hiflow plate etc. cheer john.
  19. Brand new Excedy Heavy Duty clutch $300 18" (x7.5"??) TE37 replica wheels with 2 tyres. 600 (some gutter rash however the silly vork ravs sticks are long gone... youre welcome ) Standard suspension. Must have for clearing defects. $200 Standard intake manifold $100 \ >$150 for the 2 together RB25 factory Throttle Body $100 / 2 x AC fans (one tidily modified for greddy intercooler) $100ea RB25 AFM (may have 2 but ill have to check) $80 Hicas unit $70 2 x RB Starter Motor $100ea Clutch Master Cylinder $35 Cooling Pro return style intercooler $150 Located Northside of Brisbane Willing to consider reasonable offers Contact me on 0401297648 or [email protected]
  20. Brand new Excedy Heavy Duty clutch $350 18" (x7.5"??) TE37 replica wheels with 2 tyres. 600 (some gutter rash however the silly vork ravs sticks are long gone... youre welcome ) Standard suspension. Must have for clearing defects. $200 Standard intake manifold $100 \ >$150 for the 2 together RB25 factory Throttle Body $100 / 2 x AC fans (one tidily modified for greddy intercooler) $100ea RB25 AFM (may have 2 but ill have to check) $80 Hicas unit $70 2 x RB Starter Motor $100ea Clutch Master Cylinder $35 Cooling Pro return style intercooler $150 Can repolish to a high standard for another $75 Can run custom pipework to suit on request however note you will be paying for exceptional quality
  21. RB25det Engine with approximately 78000 ks, $1500 Willing to consider reasonable offers. And willing to do a deal with a matching gearbox. Includes the factory turbo in v good condition (minimal shaft play) , alternator, factory intake manifold including t.b, fuel rail etc. No ac compressor or loom I havent done a compression check but it ran well when it came out of its original home. Located Northside of Brisbane Contact me on 0401297648 or [email protected]
  22. Hey guys the wait is over ive got my first laurel after waiting for about 2 month to get it from nsw just picked it up today and could not be happier i fell in love at first sight and now the long hard road begins fixing little things up to get it to what a want quick list of things done ENGINE: - Its an RB25det series2 out or a R33 skyline with 80,000klm and have all recipes for work done. - Greddy intake manifold. - 80mm billet throttle body - Denso 740cc injectors - Custom fuel rail with braided lines - Turbosmart FPR1200 fuel reg - Walbro 500hp fuel pump - Stainless steel hight mount manifold - Turbosmart 38mm external wast gate with screamer pipe - t04E turbo with polished housing .8 rear housing - Full 3" stainless mandrel bent exhaust system - 300/600/100 intercooler and piping - 52mm alloy radiator - Tomei Poncams 256 degree cams - adjustable cam gears - Gates racing timing belt and all tensioners and rollers wear changed - EMS Computer (ECU) - Turbosmart duel stage boost controller - Greddy turbo timer PLUS SO MUCH MORE SUSPENSION & BODY - Tein full adjustable coilovers - Tubed control arms Rose jointed - R33 4piston Calipers front - R33 2piston Calipers rear - Rear wheel bearings have been changed - 18" black with machined lip rims 8.5" front and 10" rear with stretched tyre's - 5 Stud conversion done with all new wheel bearings INTERIOR: - Fully retrimed in a light tan leather - The sound system is basic but affective with all Alpine head deck and splits and amp - The roof has been custom made with down lights and the laurel emblem in the roof needs to be finished - Downsides - there is a bad manifold leak at the moment but will be first thing fixed - and the car is a AUTO but this will be the big thing that will be changed and am going to begin collecting parts to do this asap
  23. Hello, My pcv valve is hissing, I have acquired a new valve and grommet. My question is do I have to remove the cam cover to replace the grommet or does it push in from the outside? Thanks Part No. Valve control 11810-21U00 Insulator-pcv 11812-41B00
  24. ok guys I kept this package for a mate as it felt strong and he has already paid me for it BUT i need it out the way as im struggling for room, he is stuck working up in QLD for the next 3-4 weeks and said i can sell and he will get the next package so not too fussed if it doesnt sell but be good to have it out the way a.s.a.p (before i get another wreck) Complete series 1 RB25det engine package, Engine with hot and cold sides all acc 140,000km's compression 155-160 across all cylinders Full engine loom ECU AFM Sports filter Red jacket coil packs Xtreme heavy duty clutch only thing i took off was the engine mounts and brackets for my project $1500 located northern suburbs of Adelaide do have a crane here so bring your ute or trailer
  25. Item: RB25 1000cc injectors, JECS branded (if you dont know jecs they do all the afm and injectors for nissan) yes these fit standard rails and everything. Cond: Brand new in packaging, never used. Come with the warranty papers and all the flow charts and stuff. Reason for sale: Buying a house instead of cars atm. Price: $600 firm Location: Melbourne, will ship at buyers expense. Item: Universal Fuel cell Cond: used but in good condition, no dings or large scratches, could do with a wipe down once in the car, nothing major. Reason for sale: buying house. Price: $150 firm Location: Melbourne, will ship at buyers expense. Contact on 0407 056 817 instead of pm as i dont check them.
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