hypergear

Further updates: Been doing couple of drawings and thoughts converting an internally gated turbo to external using the actuator in the direction of where IW would open, it will also be fully hidden. Also further developments on FNT stack turbine housings involving 60 small nozzles instead of current one. If works good it should give me Type A power with even better response then Type B .82 housing.

The worst it could happen is bend your con rod. happened to my S14 many years ago.

My bad I didn't saw your reply. I've replied to your email and that arrangement is fine. If the same problem persists with a new turbo which has already been tested then the issue is not turbo related, or at least you know its not turbo related. And it will be very little that I can help you with in terms of a car issue. You can take your car to DVS or Toshi after installation whom has a fair understanding of the RB25det engines.

The boost level is not greatly affected by surrounding temp as it is pressure regulated. A increase in boost normally respond to changes in back pressure, means the turbo some how breath more freely. Or maybe a vacuum hose split? I have offered exchange for upgrade or alteration now and before, during and after the engine rebuild, I don't know the reason of been so reluctant to do so. If there is a genuine believe of a part not functioning correctly then the usual act would be contact your supplier and get it sorted. I can give you a g2.5 for exchange taken out from my own car which has been tested. Check out results at dyno section and see if that is what you are after.

There are some price adjustments done to the SS series turbochargers. The billet SS version will cost $1513 complete with Internal wastegate in OEM Nissan dump pattern with braided oil line, GST inclusive. Externally gated Billet SS turbochargers is also available for the price of $1150, in T3x. I've also added some of dyno results from customers cars, which is likely to be archieved in a factory setup using stock engine unless you have have a forgied engine with strengthened head with using a steam pipe exhaust manifold like mine.

Yes. the discount apply to any one orders any ATR43 turbos in .82 rear housing. I've developed a newer billet prototype that is made to max out the factory exhaust manifold with super fast response. Will post some results once trent's dyno is fixed.

I've re-made the ATR43 screen print and re-organized the latest dyno sheets into that page, plus I've high lighted couple of important points for power making and turbine housing selection. you can get full details at our website.

From personal experience I found make actually making 300rwkws internal gate on stock manifold is not as easy as it sounds, out of 10 consecutive runs I did, only 1 went to 305rwkws and the rest was all between 275~290. After moving on to a steam pipe manifold using the same turbo out of 10 consecutive runs, the result were between 320~330rwkws with excellent consistency. the size of the turbo that was on the car was equivalent to a 3076 58T with a 86T turbine .82 rear and .70 comp. Check the Result thread, it reveals pretty much same thing. How ever I've had customers picking up 15kws by die grinding the stock exhaust manifold. So that is some thing worth while doing while changing turbo on the car.

That is assuming Pump 98 with no WMI or added fancy stuff on a safe tune using a accurate dyno.

Quick update: Due to popular demand we've started manufacturing .82 type B Nissan OEM fitting rear housings in batches. This results a saving of $185 per turbine. I will pass it onto our consumers: The new price for any none billet ATR43 in .82 rear housing is $1265 inc gst, oil line and actuator. The New price for none billet PU high flow service is $1235 inc gst, oil line and actuator. New price for externally gated none billet ATR43 in .82 rear housing is $900 Price of all Billet wheel based turbochargers built on .82 rear housings also reduces by the saving amount. It will also save turn around time from the current 4 working days to 1 working day.

You will need an aftermarket exhaust manifold internally gated or factory exhaust manifold with external gate welded on to do that. Stock manifold will safely get you 280rwkws internally gated, or run moderated timing with E85 fuel.

hamiltonau: Type B rear housing for G3 is released, you can send it back for free upgrade. Also you the tune in it was bad and pinning loud. I hope you didn't track it like that. Come pass when you are in Melbourne next.

I kept a book mark on this page as it was a very good out come after very long and stressful trouble shooting. You did make more power then I did when using the same turbo, peek power is more or less of a minor criteria, how ever the difference in overall out come is very significant. This test sets an alarmingly new understanding to my knowledge of tuner's obligations as I originally thought tuners were no differ to people whom fits tyres on my rims, the person does not alter the physical behavior of the tyres. Having said that I've always picked well known tuners in Melbourne working on my own cars, and never experienced a tuning related problem. I've meet another customer like your self not long after, luckily he turned up from thousands of KMs away, to set an absolutely brilliant example of how much tuners ability can affect overall performance and reliability of a vehicle. I've booked mark this even from the index page: Page 182 I suggest any one who haven't seen have a read through it. The G2 and SS1PU has similar HP rating, and makes similar peak power real life. As for Kosmo please go though the troubleshooting flow chart from my previous reply to have any thing not right fixed up to specifications, then make an arrangement to see AllStar or come to Melbourne to have it re-tuned.

This turbo generally makes a responsive 260rwkws with 18psi of boost, confirmed by couple of members. Pre-dyno tuning you should have: Proper aftermarket ECU that is designed for the model of engine It appears to me like a R32 ECU + Nistune with no VCT activation. Mechanically sounded engine Make sure compression are good, base timing is correct and matches with ECU data. Spilt fire coil packs with correct “copper” spark plugs Good quality fuel injectors and a good fuel pump with a new fuel filter. Good and effective 600x300x75mm intercooler, that excludes most of return flows. Have a feel on the cold end with your hand after each dyno pull. Good cooler remains cold. At least 3inch “metal” induction pipe with a free flow pod filter. This excludes: Re-enforced or modified based on stock rubber intake pipe Random ebay cast metal pipe made for factory turbo. Custom pipe that goes into a sealed factory airbox. If above is what you have make sure you change it refer to working examples from this thread. At least 3 inch free flow exhaust Excluding certain restrictive cats Excluding restrictive mufflers Good way to test it is by dropping off the exhaust pre-cat. substantial gain means restrictive exhaust system. The last thing is the Tune. There are bad tune related examples from Perth, and there is very little that I can help with, apart from sending you a Nistune map based on the same turbo for reference. Give a try at "All star garage". If there is a sincere believe of a fault on the turbocharger, then I'm happy to have it fully tested on a good setup in return of testing result and tune map, any defects found will be repaired.

Just make sure the oil line supplied with turbo is used and actuator is tightly shut with preload. Then that will he fine. Water is optional, they also works fine with no water.

E85 will solve most of the problems. How ever its not very available at this stage. I'm also updating the SS2's profile for better, more consistent power delivery and possibly even better response. Will have results in roughly 2 weeks time or when Trent's dyno is repaired.

280rwkws internally gated is about ideal. There is a noticeable difference after going to the Brea manifold. I think Trent did mention a difference between 2~3 degrees of timing in certain areas. which stock manifold would heat soak, pin with power band nosing down, while aftermarket kept on calming. making a big 330rwkws bolton turbo was a mistake.

Not yet. Its still on my car. The maximum it can do on stock manifold will be around the 280rwkws mark. Unless E85 which can push it further.

Yes I've tried that in the exact same print for the SS1PU. It became super responsive but only made 247rwkws. That method of FNT arrangement is made to trade off top end power for response. Its fine for the Type A G3 as the power level its capable is beyond what factory exhaust manifold can flow internally gated. Also should go back for few more dyno runs to see if the new clutch made a difference in performance. Generally there will be a difference if its is noticeable on road.

AFM related problems? or leaking cooling piping? check and make sure the intake pipe is not kinked or blocked, or in one occasion I had similar issue when my mechanic (no long employed) left his gloves in inside my cooler piping.

^^^ Any one whom's interested in above turbo for a Bolton setup on factory exhaust manifold is recommended to have it send in for the Type B turbine housing conversion. Unless used with an proper aftermarket exhaust manifold.

assume it is bolted on to standard exhaust manifold internally gated then the result is average on pump 98. You will need to either run an external gate or get a better exhaust manifold to obtain higher top end.

93 model R33 GTST Forgied CP pistons, valve springs and stock every thing else. 800cc injectors 600x300x75mm Front mounted cooler Xforce 3inch turbo back exhaust 21U R33 turbo Kai high flow profile using OEM housings. 20psi actuator, internally gated. 3inch intake pipe Manual boost controller Peek of 293.8rwkws @ 21psi Pump 98. E85 next week.

I've tested it person that anti surge holes would reduce power to boost ratio and increase lag. I wouldn't run the anti surging setup unless it is surging, and the last thing I had to do to overcome this problem.

I say about 20psi is the safety limit for a stock motor. Also depending on who does the tune and relevant supporting mods.