Jump to content
SAU Community

Recommended Posts

  • 3 weeks later...
  • 2 weeks later...
  • 2 weeks later...
No exactly what the question is...

Doing a burnout? - Drive around the water, backup onto the pad and apply noise.

Isolating the front wheels? - How about one of the Dirtmans 2wd/4wd switch and harnesses...

The 33GTR attessa system if different and you can't just switch from 4wd to 2wd with a switch. You can use a torque split controller but this doesn't fully isolate the rear wheels and isn't good for the transfer case. The proper way to do it is to remove any pressure from the attessa system so that there is no transfer to the front wheels. examples of cars that do this is the heat treatments GTR and Godzilla Motorsports GTR that have a manual pump system to pressurize the transfer case.

There is some combo that you are meant to be able to do, to de-pressurise the transfer case for towing (can't remember it off the top of my head) but it would be a pain in the ass to do on the drag strip.

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4622326
Share on other sites

For an R33/R34 why don't you put in a 3 position solenoid valve in the pressure line that goes to the transfer case and flick a switch to divert all the oil back to the reservior... hence no pre-load? Or is it a mechanical pre-load some how?

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4622549
Share on other sites

To put the GTR into rear wheel drive is simple.

My R33 Service Manual states:-

There are 2 Methods to change the drive mode to 2WD setting.

1. Remove air evacuation connector, and depress the brake pedal 5 times within 10 seconds after placingthe ignition switch to ON posititon. At the same time the 4WD warning lamp will flash in the meter panel (twice in a second) to indicate it's in 2WD mode. To return the the vehicle drive mode to 4WD mode, place the ignition switch to OFF position and connect air evacuation connector.

2. Remove front propeller shaft.

Can anybody confirm this works??

post-47546-1243496825_thumb.jpg

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4622599
Share on other sites

shit seems like its all to complicated, was hoping for a quick fix way.

ill be doing heaps of passes on the day so hopefully they will warm up due to the mount of use they are getting but i know they wont be perfect.

and yes i do have a torque splitter and already new that the 2wd/4wd switch doesnt work for r33's

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4622688
Share on other sites

For an R33/R34 why don't you put in a 3 position solenoid valve in the pressure line that goes to the transfer case and flick a switch to divert all the oil back to the reservior... hence no pre-load? Or is it a mechanical pre-load some how?

I haven't really looked into it, but something like that could work using a solenoid as I think it pressurizes it when you turn the ignition to acc. Maybe a switch could be rigged up to activate a solenoid to block the line to the transfer case before the car is turned on?

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4623106
Share on other sites

I haven't really looked into it, but something like that could work using a solenoid as I think it pressurizes it when you turn the ignition to acc. Maybe a switch could be rigged up to activate a solenoid to block the line to the transfer case before the car is turned on?

Yeah I would not block it just return it to the reservior, so the ATESSA ecu can do what ever it wants however the transfer case sees no oil hence does not engage 4WD. Not sure if it is that simple.

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4623209
Share on other sites

  • 2 months later...
To put the GTR into rear wheel drive is simple.

My R33 Service Manual states:-

There are 2 Methods to change the drive mode to 2WD setting.

1. Remove air evacuation connector, and depress the brake pedal 5 times within 10 seconds after placingthe ignition switch to ON posititon. At the same time the 4WD warning lamp will flash in the meter panel (twice in a second) to indicate it's in 2WD mode. To return the the vehicle drive mode to 4WD mode, place the ignition switch to OFF position and connect air evacuation connector.

2. Remove front propeller shaft.

Can anybody confirm this works??

post-47546-1243496825_thumb.jpg

i can confirm that it works a treat used it on a dyno and for skids many times

Link to comment
https://www.sau.com.au/forums/topic/264884-gtr-burnouts/#findComment-4762137
Share on other sites

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

    • Surely somebody has one in VIC. Have you asked at any shops?  Is this the yearly inspection or did you get a canary?
    • This is where I share pain with you, @Duncan. The move to change so many cooling system pieces to plastic is a killer! Plastic end tanks and a few plastic hose flanges on my car's fail after so little time.  Curious about the need for a bigger rad, is that just for long sessions in the summer or because the car generally needs more cooling?
    • So, that is it! It is a pretty expensive process with the ATF costing 50-100 per 5 litres, and a mechanic will probably charge plenty because they don't want to do it. Still, considering how dirty my fluid was at 120,000klm I think it would be worth doing more like every 80,000 to keep the trans happy, they are very expensive to replace. The job is not that hard if you have the specialist tools so you can save a bit of money and do it yourself!
    • OK, onto filling. So I don't really have any pics, but will describe the process as best I can. The USDM workshop manual also covers it from TM-285 onwards. First, make sure the drain plug (17mm) is snug. Not too tight yet because it is coming off again. Note it does have a copper washer that you could replace or anneal (heat up with a blow torch) to seal nicely. Remove the fill plug, which has an inhex (I think it was 6mm but didn't check). Then, screw in the fill fitting, making sure it has a suitable o-ring (mine came without but I think it is meant to be supplied). It is important that you only screw it in hand tight. I didn't get a good pic of it, but the fill plug leads to a tube about 70mm long inside the transmission. This sets the factory level for fluid in the trans (above the join line for the pan!) and will take about 3l to fill. You then need to connect your fluid pump to the fitting via a hose, and pump in whatever amount of fluid you removed (maybe 3 litres, in my case 7 litres). If you put in more than 3l, it will spill out when you remove the fitting, so do quickly and with a drain pan underneath. Once you have pumped in the required amount of clean ATF, you start the engine and run it for 3 minutes to let the fluid circulate. Don't run it longer and if possible check the fluid temp is under 40oC (Ecutek shows Auto Trans Fluid temp now, or you could use an infrared temp gun on the bottom of the pan). The manual stresses the bit about fluid temperature because it expands when hot an might result in an underfil. So from here, the factory manual says to do the "spill and fill" again, and I did. That is, put an oil pan under the drain plug and undo it with a 17mm spanner, then watch your expensive fluid fall back out again, you should get about 3 litres.  Then, put the drain plug back in, pump 3 litres back in through the fill plug with the fitting and pump, disconnect the fill fitting and replace the fill plug, start the car and run for another 3 minutes (making sure the temp is still under 40oC). The manual then asks for a 3rd "spill and fill" just like above. I also did that and so had put 13l in by now.  This time they want you to keep the engine running and run the transmission through R and D (I hope the wheels are still off the ground!) for a while, and allow the trans temp to get to 40oC, then engine off. Finally, back under the car and undo the fill plug to let the overfill drain out; it will stop running when fluid is at the top of the levelling tube. According to the factory, that is job done! Post that, I reconnected the fill fitting and pumped in an extra 0.5l. AMS says 1.5l overfill is safe, but I started with less to see how it goes, I will add another 1.0 litres later if I'm still not happy with the hot shifts.
    • OK, so regardless of whether you did Step 1 - Spill Step 2 - Trans pan removal Step 3 - TCM removal we are on to the clean and refill. First, have a good look at the oil pan. While you might see dirty oil and some carbony build up (I did), what you don't want to see is any metal particles on the magnets, or sparkles in the oil (thankfully not). Give it all a good clean, particularly the magnets, and put the new gasket on if you have one (or, just cross your fingers) Replacement of the Valve body (if you removed it) is the "reverse of assembly". Thread the electrical socket back up through the trans case, hold the valve body up and put in the bolts you removed, with the correct lengths in the correct locations Torque for the bolts in 8Nm only so I hope you have that torque wrench handy (it feels really loose). Plug the output speed sensor back in and clip the wiring into the 2 clips, replace the spring clip on the TCM socket and plug it back into the car loom. For the pan, the workshop manual states the following order: Again, the torque is 8Nm only.
×
×
  • Create New...