Jump to content
SAU Community

Recommended Posts

  • 12 years later...
On 17/07/2021 at 5:52 AM, schowdhry said:

hello from the year 2021 blind elk if your still on here i need your help! i have just swapped the rb25 neo into my gts4, all the mechanical work is done but i need help with wiring up the ecu! 

@blind_elk

  • 7 months later...
On 17/07/2021 at 6:22 AM, schowdhry said:

hello from the year 2021 blind elk if your still on here i need your help! i have just swapped the rb25 neo into my gts4, all the mechanical work is done but i need help with wiring up the ecu! 

Are you available to chat with about this conversion ??

  • 2 months later...
On 11/16/2008 at 3:16 PM, blind_elk said:

Sorry, but that's rubbish. When I did the swap in mine, it all just swapped over.

This is Rubbish information and basically screwed up my build plans. 

 

RB25DET (Neo) does not use the same AWD oil pan as the RB20.  The Pan's do not swap. Bolt holes are not aligned. I'll have more photos when I pick it up from the shop. 

 

So to be specific as possible, since every thread I find about this information is vague and useless. 

 

 

1989 GTS-4 Coupe - AWD - Turbo RB20DET 5spd Manual. 

Engine  - RB25DET NEO - Stagea - most likely automatic car. 

 

Car in Question 

 

IMG_20210510_152439.thumb.jpg.067204d9eb6cb415c07435d06db840f1.jpg

 

Engine

IMG_20210429_122841.thumb.jpg.d39938a742f75efc3df061314ffa2659.jpg

RB25DET NEO AWD PAN

20220518_171456.thumb.jpg.73818ee2fb8d51101fa0f6d4a6ab45e7.jpg

RB20DET AWD PAN

20220518_171538.thumb.jpg.291f0f04d4d14ad2c6cf598be6b25d78.jpg

On 7/16/2021 at 1:22 PM, schowdhry said:

hello from the year 2021 blind elk if your still on here i need your help! i have just swapped the rb25 neo into my gts4, all the mechanical work is done but i need help with wiring up the ecu! 

Did you swap the Ring and Pinion? 

 

How much a PITA Is it to shim the front differential. From what I can tell there is two thrust washer with 6 various sizes each for sides and two washers with almost 10 each options for the pinion depth along with a pinion sleeve that comes in 6 sizes. 

There is almost 1.65mm of depth tolerance stacking and with each of these washers/shims running for $5, that's almost $500 to get enough to play whack a mole with setting up the R&P pattern. 

On 5/20/2022 at 1:05 PM, corbic said:

There is almost 1.65mm of depth tolerance stacking and with each of these washers/shims running for $5, that's almost $500 to get enough to play whack a mole with setting up the R&P pattern.

That's why I always just give it to my trusted diff guy to put my Frankendiffs back together.

On 5/19/2022 at 10:19 PM, GTSBoy said:

That's why I always just give it to my trusted diff guy to put my Frankendiffs back together.

I'm state side, so while I have two great diff shops near by, neither is going to stock GTR/Nissan shims. 

On 5/19/2022 at 10:47 PM, GTSBoy said:

No, but they can use whatever shim they have, measure the difference with feeler gauges (or whatever alternative approach they may choose) and then buy appropriate shims as required. Not really any different over here.

Shims are unique to the GTR/Nissan.  A local shop may determine that a longer sleeve is needed, but they are not going to be able to call up NAPA Auto Parts or a Nissan Dealer and pick up a sleeve. 

Also, looking at the FSM - it looks like there is a pressed on bearing for the Snub - sooo I doubt any shop is going to have a dummy bearing to get the initial depth without having to press on - press off the bearing a dozen times. 

 

$150/hr experimenting with all this is going to turn into a $2000 shop bill real quick if I went that route. 

 

 

Le sigh. The shim you want to leave in there may unique to the R200. But I can guarantee you that any decent shop will have OTHER SHIMS THAT WILL FIT, even if they have to bore the inner diameter out or scrape some off the outer diameter, to use as a bloody reference.

It hasn't cost me much to have my trusted diff shop do it.

  • 1 month later...

As you can see the Pan's are completely different. The RB25 pan is a different bolt pattern and the axle tube + differential are mounted forward.  The Axle is nearly touching the oil sump and there is an additional 3 inch gap between the differential flange and the end bellhousing plane. 

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

    • My dream is also to have a proper hoist, but I don't think it will ever happen. My quickjack is probably as close as I'll ever get, it really is very good though. 
    • Yeah we keep on in the dailies, it is pretty poor how many animals get hit and the driver leaves without checking....have saved a couple of little ones over the years. Bit of a gruesome job though, pouches generally need to be cut open because they are so tight and often the joey doesn't realise mum is gone so they are still locked onto the teat. I checked the modules in front of the DS wheel where an oil cooler should go.... There is the radar unit - that can go for race use) One of the 2 HX water pumps, the silver cylinder. That needs to be kept but might be able to be relocated But the bad news, the big computer mounted vertically in front of the wheel (blocking any potential air exit) is the electric steering computer. That is required until/unless i do a hydraulic steering conversion, and in CAD based modern car design it is not like I can just pop a big unit like that somewhere else (plus the loom would be too short anywhere else too). So, the passenger side is OK to clear out (just use a smaller washer reservoir, potentially elsewhere), but the DS no beuno
    • Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
    • BTW I measured the jack I have, it is 70mm at the saddle but you only have about 700 until it returns to 150mm high at the cylinder so it is good but no magic bullet.
    • My experience with Rising Sun Exports Before agreeing to the sale I tried to do as much research as I could (obviously), his Facebook reviews are 98% and he goes Live at least once or twice a week. I contacted 2 people in the UK who had used him for their imports, both had positive feedback. His explanation and talk through of the import process was thorough, answering any query no matter how stupid it was. It felt as soon as the money was sent, communication dropped off. I asked for shipping updates every 2 weeks or so, not wanting to pester him, he never had any updates. I wasn't informed the car had been dropped off at the port, I only found out by his Facebook story. I asked for the photos taken at the port, knowing he would need some for insurance purposes. I received a few 5 second clips and that's it. When asked again, he said his staff had them. Weeks later I asked again, he tells me he doesn't have any, but does have 50 photos from the original advert. I never received them. I eventually got the documents sent via WhatsApp after I mentioned the port was requesting them. I purchased a CarVX report, to find out the vehicle is a Grade R with recorded accident damage, first recorded in 2017 when it was first auctioned. He never told me the grade, then again I didn't ask. His response was "Grade R means nothing, it wasn't chassis damage". Still, I would have liked to have been informed about it. Jon prides himself on being open and honest when it comes to inspecting cars, it's his main job doing so at the auctions for customers. When the vehicle arrived in the UK I noticed a few little cosmetic issues. It's a 21 year old car so it wasn't going to be mint condition. The side skirts are cracked on each corner and the sealant is failing. The front grill on the bonnet/hood isn't secured very well, mounting studs are missing. Both minor things, but again, it would have been nice to be told. During a Facebook Live walk around video of the vehicle, he mentioned it has a front Whiteline anti roll bar/sway bar. While on the inspection ramp, I noticed the stock item has been installed. When first questioned, his response was "the ARB? Switched? Since when, it never had them". Since sending video and photo evidence I've not received a response. I'm probably being over critical of the overall condition of an old car, but all I wanted was honesty (which he claims to have). I'm aware I wasn't his only customer, he's busy doing XYZ but other reviews praise him for great communication with regular updates and photos, I felt I didn't receive the same treatment. 
×
×
  • Create New...