Jump to content
SAU Community

Recommended Posts

so how hard is it? anyone gone through this yet? will be transferring gtr motor and gearbox over to my 33 gtst and want to know what parts i will find difficult apart from getting the parts needed for the conversion itself and any other related info would be great!

i have in my possession already the motor, box, loom, ECU, fmic, afm's, and other engine related parts already. i know i will need a Y-pipe or wateva that part from the dumps to the cat is called. also have upgrade fuel pump already diff is 2way.will the mounts line up? will i need any other parts that ive left out? need as much help as possible! thanks everyone!

Dom

Link to comment
https://www.sau.com.au/forums/topic/208777-rb26-into-my-33-gtst/
Share on other sites

so how hard is it? anyone gone through this yet? will be transferring gtr motor and gearbox over to my 33 gtst and want to know what parts i will find difficult apart from getting the parts needed for the conversion itself and any other related info would be great!

i have in my possession already the motor, box, loom, ECU, fmic, afm's, and other engine related parts already. i know i will need a Y-pipe or wateva that part from the dumps to the cat is called. also have upgrade fuel pump already diff is 2way.will the mounts line up? will i need any other parts that ive left out? need as much help as possible! thanks everyone!

Dom

dude you can use the gtst 5 speed, theyr identical except for the transfer case. as for fittup, theyr identical motors to bolt in. you will need the ecu and exhaust done, but basically straight in shel go!

sounds too easy...lol so basically its a straight drop in? ecu wise ive got it with the loom as well which came as a package :) is there any difference over which is better between the GTR box and the 33gtst one? will i have any issues regarding running only RWD rather than 4WD?

My GTS25t race car has a 26 head on 30 blockwin turbos, GTR inlet and t

I use a GTS25t power FC, GTS25t temp sensor, single AFM, resistor pack and low impedence injectors. Otherwise it's all RB25DET connections.

is there a MASSIVE performance difference between the rb25det and the rb26dett? will my driveline need any upgrading? brakes should be sufficient im guessing coz 33gtst are the same as 32 gtr (non brembo).

GTRgeoff- did all the engine bay accessories fit straight up eg power steering, aircon, etc etc? and is everything literally bolt straight up to the 26?

is there a MASSIVE performance difference between the rb25det and the rb26dett? will my driveline need any upgrading? brakes should be sufficient im guessing coz 33gtst are the same as 32 gtr (non brembo).

GTRgeoff- did all the engine bay accessories fit straight up eg power steering, aircon, etc etc? and is everything literally bolt straight up to the 26?

the gtr and gtst gearboxs are exactly the same internally and will handle the same amount of abuse.

You will actually see a gtst withstand a tad more punishment hp wise purely because there is a fusable link (the rwd) so it will smoke tyres before it will break the box itself, a gtr will just grip and put everything under more strain. I dont see a reason why the stock box wouldnt happy take 500-600rwhp with some decent oil in it.

The rb26 on stock turbos at 15psi will be much quicker than the rb25 with stock turbo at 15psi, so you will notice a very nice jump in power.

Goodluck with the conversion, you will be baking tyres :cheers:

sump wise i was wondering if i could use the 33 gtst sump to put onto the gtr motor?

in my gtst will be running in RWD anyways, therefore the power handling and abuse tolerance should be the same then according to what R34GTFOUR is saying. my old setup of stock rb25det motor with highflowed turbo, trust full exhaust, apexi front mount and with about 1bar boost (yes that is it) felt very quick and nearly no boost lag. planning to get a dyno run done (finally after 3yrs hahah) to see before and after figures to compare torque and any other relavant info. with the 26 going in, it will be running completely stock, apart from pod filters, full exhaust, probably get it running at 12 or 14psi daily and a JUN remapped computer.

SHOULD I MAKE SIMILAR/MORE PERFORMANCE FROM THE 26 considering it is a torqueier motor with an extra turbo....?

hey you wont be able you use the 25 or a 30 sump they are not deep enough to clear the crank cradle, you will have to mod the standard sump by cutting out the front diff arangment. If you use the rb30 pan all its made out of is pressed steel sheeting where the 26 sump is 6-7mm alluminium and this will be greatly stronger and help with the block regidity.

  • Like 1

Where did you hear that rot???

Look in the thread below. Maybe you will find something I haven't.

The stock oil pump is as good as you will need. Just make sure the pump drive is a later model, not an early one.

And keep the GTR sump and remove the diff. It holds no oil for the sump. Do fit a filter relocator and cooler and add about 1 litre extra if you go to the track. Also, while the sump is off fit a gated oil collector around the pickup.

All the accessories will fit but the harmonic balancer on the gtr has different drive pulleys, so get a good after market RB25 one from one of the traders. They all use the same crank nose so it will fit.

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

    • Hi, is the HKS  Tower Bar still available ? negotiable ? 🤔
    • From there, it is really just test and assemble. Plug the adapter cables from the unit into the back of the screen, then the other side to the car harness. Don't forget all the other plugs too! Run the cables behind the unit and screw it back into place (4 screws) and you should now have 3 cables to run from the top screen to the android unit. I ran them along the DS of the other AV units in the gap between their backets and the console, and used some corrugated tubing on the sharp edges of the bracket so the wires were safe. Plug the centre console and lower screen in temporarily and turn the car to ACC, the AV should fire up as normal. Hold the back button for 3 sec and Android should appear on the top screen. You need to set the input to Aux for audio (more on that later). I put the unit under the AC duct in the centre console, with the wifi antenna on top of the AC duct near the shifter, the bluetooth antenna on the AC duct under the centre console The GPS unit on top of the DS to AC duct; they all seem to work OK there are are out of the way. Neat cable routing is a pain. For the drive recorder I mounted it near the rear view mirror and run the cable in the headlining, across the a pillar and then down the inside of the a pillar seal to the DS lower dash. From there it goes across and to one USB input for the unit. The second USB input is attached to the ECUtec OBD dongle and the 3rd goes to the USB bulkhead connected I added in the centre console. This is how the centre console looks "tidied" up Note I didn't install the provided speaker, didn't use the 2.5mm IPod in line or the piggyback loom for the Ipod or change any DIP switches; they seem to only be required if you need to use the Ipod input rather than the AUX input. That's it, install done, I'll follow up with a separate post on how the unit works, but in summary it retains all factory functions and inputs (so I still use my phone to the car for calls), reverse still works like factory etc.
    • Place the new daughterboard in the case and mount it using the 3 small black rivets provided, and reconnect the 3 factory ribbon cables to the new board Then, use the 3 piggyback cables from the daughterboard into the factory board on top (there are stand offs in the case to keep them apart. and remember to reconnect the antenna and rear cover fan wires. 1 screw to hold the motherboard in place. Before closing the case, make a hole in the sticker covering a hole in the case and run the cable for the android unit into the plug there. The video forgot this step, so did I, so will you probably. Then redo the 4 screws on back, 2 each top and bottom, 3 each side and put the 2 brackets back on.....all ready to go and not that tricky really.      
    • Onto the android unit. You need to remove the top screen because there is a daughterboard to put inside the case. Each side vent pops out from clips; start at the bottom and carefully remove upwards (use a trim remover tool to avoid breaking anything). Then the lower screen and controls come out, 4 screws, a couple of clips (including 3 flimsy ones at the top) and 3 plugs on the rear. Then the upper screen, 4 screws and a bunch of plugs and she is out. From there, remove the mounting brackets (2 screws each), 4 screws on the rear, 2 screws top and bottom and 3 screws holding in the small plates on each side. When you remove the back cover (tight fit), watch out for the power cable for the fan, I removed it so I could put the back aside. The mainboard is held in by 1 screw in the middle, 1 aerial at the top and 3 ribbon cables. If you've ever done any laptop stuff the ribbon cables are OK to work with, just pop up the retainer and they slide out. If you are not familiar just grab a 12 year old from an iphone factory, they will know how it works The case should now look like this:
    • Switching the console was tricky. First there were 6 screws to remove, and also the little adapter loom and its screws had to come out. Also don't forget to remove the 2 screws holding the central locking receiver. Then there are 4 clips on either side....these were very tight in this case and needed careful persuading with a long flat screw driver....some force required but not enough to break them...this was probably the fiddliest part of the whole job. In my case I needed both the wiring loom and the central locking receiver module to swap across to the new one. That was it for the console, so "assembly is the reverse of disassembly"
×
×
  • Create New...