Rekin Posted November 19, 2016 Share Posted November 19, 2016 R32 GTST rb25 neo rebuild So thought I would start a build thread for my 1993 nissan skyline r32 gtst. As the Vic regulars may know, having owned her for 10yrs, the mighty rb20 had never let me down. Always waving the rb20 propaganda flag!! Previously running a hks2530 with all supporting mods, the little '20 was putting out a respectable 230kw atw in its daily trim. Until recently, with 250,000km on the clock, the car started to feel a bit hesitant. A compression test/leak down test revealed a low-compression/leaking cylinder So the first step was to pull off the head in the hopes it was a valve issue... Off with your head.... Sent off the head to be inspected but it showed up all fine??? Confused...so my options were to either bolt it all back together & hope for the best, or start fiddling with the rb20 block... Decided that the easiest option would be to retire the long-serving rb20 & drop in a rb25 NEO and be on my merry way. RIP rb20 Having found & purchased a wrecker rb25 NEO, I felt it would be best to inspect & freshen up before fitting into the r32... Sent the Head & Block off to be inspected & with any gamble in buying second-hand motors, the news wasnt good... Number 1 conrod bearing had spun & caused a bit of damage to the crank. Oil pump drive on the crank nose was also damaged which would indicate the oil pump gears could be damaged as well... Fortunately the seller of the engine was a top-bloke & offered a partial refund as I was still committed to rebuild the engine! So the engine build continues with a freshen-up of the Head with 'Performance Spring' valve springs & retainers on their way from QLD... & for the block - new goodies have been purchased. For the oil pump, I have opted for Lewis Engines oil pump spline gears - controversial? mysterious? - lets see what happens http://www.lewisengines.com.au/new-product-rb-spline-drive-gearsets-and-drive-kits/ and for the block, my arm was twisted into buying CP forged pistons & Manley rods So this is where we land today - a couple of other things happening in the background - rb25 gearbox rebuild & Nismo LSD - but will update once I receive updates myself. Wiring, on the hand, is something i'm putting off at this stage as its not as simple as a r33 rb25 drop-in. The rb20 loom is out & I have a Neo loom to mix/match/hack into...or I might just opt for a Wiring Specialties new loom & save the headache?http://www.wiringspecialties.com/rb25-neo-wiring-harness-r32-gts/ Only time will tell, watch this space & thanks for reading 7 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/ Share on other sites More sharing options...
blah_blah Posted November 19, 2016 Share Posted November 19, 2016 Nice build thread! Dont stuff it up[emoji14] 1 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7792691 Share on other sites More sharing options...
PranK Posted November 21, 2016 Share Posted November 21, 2016 Yes! This looks great, I love reading about cars that have been with the same owner for a long period. Well done. 1 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7792988 Share on other sites More sharing options...
jmknights93 Posted November 21, 2016 Share Posted November 21, 2016 This shall be an interesting thread. Nice work so far. 1 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7792990 Share on other sites More sharing options...
JH32 Posted November 21, 2016 Share Posted November 21, 2016 Nice one! You're in Perth yeah? Or back in Melb? Who's doing the engine and head work? Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793030 Share on other sites More sharing options...
Rekin Posted November 21, 2016 Author Share Posted November 21, 2016 4 hours ago, JH32 said: Nice one! You're in Perth yeah? Or back in Melb? Who's doing the engine and head work? I had a short stint in Perth where I moved myself & the car across but I've since returned back to Melbourne ====== Good News! My Nismo 1.5way LSD has arrived from Japan. Apparently the last one in stock, a quick-turn around thanks to Jesse Streeter! Full engine gasket kit on its way from Kudos Motorsports & hopefully will get an update on the rb25 gearbox rebuild tomorrow Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793087 Share on other sites More sharing options...
admS15 Posted November 21, 2016 Share Posted November 21, 2016 Going all out, I like it. Keep the updates coming. Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793089 Share on other sites More sharing options...
32_love Posted November 21, 2016 Share Posted November 21, 2016 12 hours ago, Rekin said: If you don't mind me asking, what front lip is that? Looks very shmick Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793136 Share on other sites More sharing options...
CEF33Y Posted November 21, 2016 Share Posted November 21, 2016 Nice 32! I was contemplating a RB25NEO conversion into my RB20 cefiro. I was planning to keep my ecu (nistune) loom etc, and run a msd window switch for the vct, As far as wiring, pretty sure most things are like for like, apart from the CAS, which is reversed, Pretty sure I found instructions on SAU Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793137 Share on other sites More sharing options...
Rekin Posted November 22, 2016 Author Share Posted November 22, 2016 11 hours ago, 32_love said: If you don't mind me asking, what front lip is that? Looks very shmick no idea what type of lip it is, I picked it up from a friend who imported his car with the lip. It's quite unique as its shaped specifically for the gtst front-bar 11 hours ago, CEF33Y said: Nice 32! I was contemplating a RB25NEO conversion into my RB20 cefiro. I was planning to keep my ecu (nistune) loom etc, and run a msd window switch for the vct, As far as wiring, pretty sure most things are like for like, apart from the CAS, which is reversed, Pretty sure I found instructions on SAU only like-for-like with a r33 rb25 engine. Unfortunately the NEO uses different body plugs so a lot of chopping & swapping is required. I'll dive into it once Im ready to start wiring in the engine Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793271 Share on other sites More sharing options...
Rekin Posted November 24, 2016 Author Share Posted November 24, 2016 Bath time! Looked a bit oval & we cant have that! Looking more round criss-cross Before & After New kid on the block Now we wait for the crank collar & clutch so we can balance it all up & start to assemble 4 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793652 Share on other sites More sharing options...
vaginakarlotta Posted November 25, 2016 Share Posted November 25, 2016 Ahhhh, just the thread I was looking for! I'm starting this same conversion over the holidays; engine, trans, ecu/loom... the whole she-bang! I'll be keeping my eyes peeled for this thread. Best of luck with the conversion! 1 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7793902 Share on other sites More sharing options...
Rekin Posted February 2, 2017 Author Share Posted February 2, 2017 okay things have been a bit quiet in here - but lots of parts have been ordered over the Christmas break. I am proud to share my latest purchase from GCG Turbochargers - A Garrett GTX3071r Gen2 T3 internal wastegate 0.82 low-mount RB setup. With the GenII only released 2 months ago this is the first low-mount RB setup to pass through GCG Turbochargers & onto me Big shout-out to GCG Turbochargers for responding to my endless FB messages after hours & helping me choose the right setup for my application. Not only that, but the turn-around from Order to Dispatch was a matter of weeks when other distributors were quoting 3 month lead-times. In addition,with GCG Turbochargers expertise in building turbos, they added a few extra tweaks to the build to aid boost control & overall flow. GCG Turbochargers supplied in a RB25 low-mount kit; with all gaskets, bolts, studs, manifold spacer, braided lines, actuator, extra cheese - hold the mayo. And to top it off, they been kind enough to send through some build photos And so the r32 build continues! Watch this space 2 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7808616 Share on other sites More sharing options...
blah_blah Posted February 2, 2017 Share Posted February 2, 2017 Watching space Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7808682 Share on other sites More sharing options...
admS15 Posted February 2, 2017 Share Posted February 2, 2017 Watching x 2 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7808701 Share on other sites More sharing options...
GH05T Posted February 2, 2017 Share Posted February 2, 2017 nice Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7808728 Share on other sites More sharing options...
Gts-t Posted February 3, 2017 Share Posted February 3, 2017 (edited) Looking forward to more Rekin, love the 32 gts-t's, I have been contemplating selling my rb2630 and fitting a 25 neo to mine instead. Keep the updates coming! Edited February 3, 2017 by Gts-t Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7808732 Share on other sites More sharing options...
Rekin Posted February 3, 2017 Author Share Posted February 3, 2017 GCG Turbochargers have sent through a cheeky photo of the whole kit ready for dispatch next week 3 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7808918 Share on other sites More sharing options...
Rekin Posted March 9, 2017 Author Share Posted March 9, 2017 okay - a small update - parts have finally arrived - my box of goodies NPC clutch - lookin fresh Performance Springs all lined up & ready for assembly! Neo head machined & assembled - ready for the Block! A winning combination - CP forged pistons & Manley rods... Spool oil pump spline gear fitted & crank sent off to be balanced.... The GCG turbo arrived & looking shmick! Quite large in comparison to my old hks2530 & as i wait for my engine to come together, the turbo has found itself on the coffee table for the time-being 5 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7816294 Share on other sites More sharing options...
DaymoR32 Posted March 14, 2017 Share Posted March 14, 2017 im going to be watching this thread for inspiration! liking the choice selection of parts so far for the rebuild! 1 Link to comment https://www.sau.com.au/forums/topic/467808-r32-gtst-rb25-neo-rebuild/#findComment-7817460 Share on other sites More sharing options...
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