Jump to content
SAU Community

Recommended Posts

Yo Stao

I have your ~2010 model atr43g3, which you high flowed into a ss2 around 2013.

Thats on my 34 at the moment ( your new ss2 sounds to good to pass up, i want it now lol )

Now onto my question, i have got a patrol that is getting a rb25 transplant.

Obviously i want more power in it so it can actually lug around the 3 tons, but i think the SS2 or possibly even the highflow op6 will be to laggy for what i need.

I was wondering if you have anything that could get boost on early, earlier the better, but still make some decent power.

Close to 2500-3000 rpm is what im hoping for .

^ive got the 21u highflow on mine. Made 248rwkw @18psi with a quiet restrictive nismo 3 inch exhaust and return flow cooler. Full boost @ 3450rpm. Tuner says could make 10-15kw more with better fliwing exhaust.

Following up about the 3inches diameter restriction problem with internally gated ATR45. I've made a simple Tee pieces that is attached to the front pipe. It is spring loaded, so gas pressure forces the valve open once it builds up to certain point, while remains shut and quite on cruise.

piecestogether.jpg

springopen.jpg

frontpipevalveopen.jpg

frontpipeshut.jpg

  • Like 1

Some further updates. Those are the CNC machined billet internal gate assemblies made for Nissan RB25det high flows. This upgrade will help stabilising boost and should pickup few extra KWs working with small 21U turbine housings also. This is usually a $200 upgrade job, Now comes standard with all RB20/25det high flows at no extra cost, that is $850 including braided oil feeding line.

gate.jpg

gateopen.jpg

gateshut.jpg

  • Like 1

Yes, All RB25det and RB20det engines

I'm not sure that upgrade is actually required. I'm not having any boost control issue with my hi flow and I'm not awaren of anyone else having boost control issues but if you want to offer it for free, I don't think anyone is going to argue with you as long as it works properly.

Bigger waste gate keeps the turbine cooler on tracks and possibly an extra degree of timing. Did that on John Reco's WTAC car this year and it was very successful.

Just had time to install the new ATR43SS2 with the DIY dump bleeder.

comphousing2.jpg

turbooncar1.jpg

frontpipevalveopen.jpg

Car is currently running the ATR45SAT's tune, its booked for tuning on the 9th. The response is similar to the older SS2 but making way more power. That Bleeder vale have made a noticeable difference to upper rev torque, the car pulls all the way to red line. That bleeder is definitely a worth while DIY to do. Will upload results once dyno tuned.

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

    • Well GTSBoy, prepare yourself further. I did a track day with 1/2 a day prep on Friday, inpromptu. The good news is that I got home, and didn't drive the car into a wall. Everything seemed mostly okay. The car was even a little faster than it was last time. I also got to get some good datalog data too. I also noticed a tiny bit of knock which was (luckily?) recorded. All I know is the knock sensors got recalibrated.... and are notorious for false knock. So I don't know if they are too sensitive, not sensitive enough... or some other third option. But I reduced timing anyway. It wasn't every pull through the session either. Think along the lines of -1 degree of timing for say, three instances while at the top of 4th in a 20 minute all-hot-lap session. Unfortunately at the end of session 2... I noticed a little oil. I borrowed some jack stands and a jack and took a look under there, but as is often the case, messing around with it kinda half cleaned it up, it was not conclusive where it was coming from. I decided to give it another go and see how it was. The amount of oil was maybe one/two small drops. I did another 20 minute session and car went well, and I was just starting to get into it and not be terrified of driving on track. I pulled over and checked in the pits and saw this: This is where I called it, packed up and went home as I live ~20 min from the track with a VERY VERY CLOSE EYE on Oil Pressure on the way home. The volume wasn't much but you never know. I checked it today when I had my own space/tools/time to find out what was going on, wanted to clean it up, run the car and see if any of the fittings from around the oil filter were causing it. I have like.. 5 fittings there, so I suspected one was (hopefully?) the culprit. It became immediately apparent as soon as I looked around more closely. 795d266d-a034-4b8c-89c9-d83860f5d00a.mp4       This is the R34 GTT oil sender connected via an adapter to an oil cooler block I have installed which runs AN lines to my cooler (and back). There's also an oil temp sensor on top.  Just after that video, I attempted to unthread the sensor to see if it's loose/worn and it disintegrated in my hand. So yes. I am glad I noticed that oil because it would appear that complete and utter catastrophic engine failure was about 1 second of engine runtime away. I did try to drill the fitting out, and only succeeded in drilling the middle hole much larger and now there's a... smooth hole in there with what looks like a damn sleeve still incredibly tight in there. Not really sure how to proceed from here. My options: 1) Find someone who can remove the stuck fitting, and use a steel adapter so it won't fatigue? (Female BSPT for the R34 sender to 1/8NPT male - HARD to find). IF it isn't possible to remove - Buy a new block ($320) and have someone tap a new 1/8NPT in the top of it ($????) and hope the steel adapter works better. 2) Buy a new block and give up on the OEM pressure sender for the dash entirely, and use the supplied 1/8 NPT for the oil temp sender. Having the oil pressure read 0 in the dash with the warning lamp will give me a lot of anxiety driving around. I do have the actual GM sensor/sender working, but it needs OBD2 as a gauge. If I'm datalogging I don't actually have a readout of what the gauge is currently displaying. 3) Other? Find a new location for the OEM sender? Though I don't know of anywhere that will work. I also don't know if a steel adapter is actually functionally smart here. It's clearly leveraged itself through vibration of the motor and snapped in half. This doesn't seem like a setup a smart person would replicate given the weight of the OEM sender. Still pretty happy being lucky for once and seeing this at the absolute last moment before bye bye motor in a big way, even if an adapter is apparently 6 weeks+ delivery and I have no way to free the current stuck/potentially destroyed threads in the current oil block.
    • Literally looks like direct port nitrous haha
    • They are in fact just nozzles. They are there only to produce a spray pattern and limit flow. The injector itself is what I use to control flow to the 7x nozzles. My old system had no injector and only PWM the pump. This lead to a lot of inconsistencies, and poor atomization at low pressure when the pump was ramping up. 
×
×
  • Create New...