hypergear
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Everything posted by hypergear
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That above is a ATR43SSG4 core, so similar what it originally was. The VNT system do work and I've been using them a while now for anti lag. This specific method has the potential to knock off about 500RPMs of lag without trading off power. How ever has to be very specific to the amount of back pressure the turbine housing is receiving. Little like setting up Ign timing which at specific point they will allow the engine to output its highest torque while otherwise results the opposite. Some thing worked so well on the RB25det worked horribly on the Kia's High comp G4GC motor. So getting this to work on the Rb30det it will require a new round of research and development. -
Those are all E85 figures. that would be roughly 260rwkws on P98 fuel.
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Actually, I think it was a R33 21U high flowed turbo. The updated high flow probably works out to be similar to a SS1PU. There are two profiles for the OP6, we can still use the old configuration which keeps it responsive and maxing out towards 260rwkws while the later configurations would be maxing towards 300rwkws with more lag. I'm working on a new version of high flow for Rb20det motors. The expected out come will be very similar to a 2530. Will update photos as its been completed.
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Rb Non Equal Length High Mount Manifold
hypergear replied to 1400r's topic in Engines & Forced Induction
I saw a poorly made manifold in china. that was for a turbocharged kia. it had one extractor significantly shorter then the rest. on the dyno, that one was very red while the rest wasn't. -
Some results sent in from B-Rice: This is standard 21U high flow on E85 managing 292rwkws on E85 fuel and factory actuator: Clutch is slipping little up top, and I believe an high pressure actuator should be able to hold boost straight with a gain of another 30kws.
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Not sure what it might be in this case. Same customer posted up a bluer photo of his quarter result on facebook. I will update an more accurate result once I get a responds. The new wheel combination seems to be working nicely inside 1JZGTE VVTi CT15B housings as well. Latest result: Toyota Soarer 1JZGTE VVTi Manual Car has 650 cc injectors PFC ECU Front mount cooler 3 inches turbo back exhaust Aftermarket exhaust manifold 3 inches metal induction pipe with pod filter. Most power made was 312rwkws @ 23psi, Left on 293rwkws @ 20psi. Car makes 200rwkws by 4000RPMs with excellent on road driving ability.
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R33 Gtst Rb25Det Hitting Power Ceiling
hypergear replied to Michael's R33's topic in Engines & Forced Induction
There are two types of OP6 high flow. Most of the recently once made this year has the updated compressor and turbine whiles which is capable of making a lot more power. The older versions usually stops making power towards the 260rwkws mark, which your first dyno run sort of makes more sense. Getting the most out of the turbocharger, 3 inches metal induction with a good pod is a must, as well as a proper cooler and free flow exhaust. -
Currently I don't. I prefer developing new exhaust wheels for more specific applications. Once a turbine wheel is cropped it will becomes very unefficient, that requires lot more combustion pressure to rise shaft speed. But if you want to crop a wheel to a given degree for what ever reasons I certainly can to do it.
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Yes can swap over. but I will need the turbo back also, that is to machine up the turbine wheel accordingly.
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Getting the most out of it you will need a proper 3 inch metal induction pipe with a good pod filter. Or at least 3 inches metal induction pipe. Once done, there will be a gain in power. The actuator pressure is affected by how free flow the whole system is. Usually working with a larger induction with big cooler and very free flow exhaust would ended up with more boost pressure then some thing thing that is more restrictive. Also preloading on the actuator will have an positive effect towards response. Alternatively if response do become concern, drop in a 21U turbine housing, it will increase response by roughly 500RPMs.
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Stock Op6 Turbocharger on a R32 makes full boost around 4300RPMs and max out at 201rwkws. So I think its not too bad. Ideally hunting for response is probably better stick with stock turbine housing for response. How ever maximum power wise, the OP6 high flow is capable for a lot more.
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Generally I see Rb20det engines using the same turbocharger been 1000RPMs laggier then as if its used on a RB25det engine. So the SS2 Alpha mentioned above should be making full boost around 4500RPMs on a Rb20det, power based on same boost is about 10% less up to certain point that RB20dets no longer makes power while RB25dets keeps on making power.
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383rwkws with 23psi by 3500RPMs standard spec rb25det engine on single scroll high mount and external gate E85. Thats about the limitation of most power and response. any thing more it starts to chock the engine down low and doing opposite. It feels as stock turbo pulling 383rwkws. No point getting any better response beyond this point. That was with the old SS2 CBB CHRA, the new one can probably fetch 390rwkws.
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^^^^ That is BS Ask him why other people using his Rb25det high mount manifold and this particular turbo fits. All P Trimmed T3x turbine housings are identical. Its the "Area" over Radius that made up that volume which hits the rocket cover. To space it out, this area will have to be minimized, means no longer .82. Also look how close this back plate is to the head. There is no way this comp housing can fit even the turbine housing is changed. I've seen 6 boost manifolds high mounted SS2 with .82 turbine before. This manifold is very wrong. The only way I see it, is by cutting off the manifold flange and re-weld it in the correct angle.
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.82 turbine:
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Well it is 2mms larger then previous version with a different blade radius and hub shape.
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This one is $1100 to build. including Vband O ring and clamp on the turbine side.
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Yes it is lol The cut on the turbine housing is made for 14mm nuts.
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Add in another update. This is our latest TD06SL2 based turbocharger, the SLSS-2 in 10cm turbine. This particular one has the latest low friction trust setup, with slightly larger compressor inducer and slightly more aggressive compressor blade profile. It should be maxing out around 390rwkws mark working with a RB25det engine on E85. It is made to produce more power, with better response and much better reliability to some of the T67 copies Will update results shortly. .
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Upload a video. Which we machined a bunch of comp housings today using CNC: The comp housing profile was done by CNC too, except the lathe tip is sprayed with oil that can't be seen. Takes about 10 mints to complete a comp cover from Castings. Which working by hand would roughly be 70 mints.
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First Time Engine Build. Rb25/30 Neo Advice
hypergear replied to iruvyouskyrine's topic in Engines & Forced Induction
For this size engine you can run a SS-4 turbo. That maxed at 435rwkws. It is more responsive then a 3582 also. -
Actually after I replaced the stock R33 rubber induction pipe with a proper 3 inch metal item. My fuel actually went lean in upper revs. It has to be touched up.
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I was modifying 300zxs for a couple of years and induction pipes on them do make a very noticeable difference. So I believe proper induction pipes can also affect GTR's performance in a positive way.
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Little update on the ATR28SS series on sr20det engine. This particular prototype is a modified SS15 in a .64 rear, how ever the modification did not take effect. How ever still made a reasonably responsive 255rwkws @ 18psi on pump 98 fuel. This turbocharger against the most responsive GT2871R in .64 turbine housing run, and beats it in both power and response: I also conducted a test evaluating factory 2.5 inches induction pipe Vs a 3 inches induction pipe. Results as shown: Differences is 13kws at 255rwkws application: Red is with 2.5 inches induction pipe, while Green is the normal 3 inches induction pipe.
