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RB335

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RB335 last won the day on November 22 2016

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About RB335

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    Rank: RB25DE

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  • Car(s)
    GTR
  • Real Name
    Boris

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  1. We did a test with a standard EFR BOV with a low power setup and we were seeing slight leaks even at 25 PSi region, where we got a little increase in power by blanking it. So it's definitely something to address. This would have been the pre mid 2018 one. My Nitto 2.8 Vcam 264 / ex 260 setup with EFR9180 will be on the Dyno in coming weeks. I'm looking at then using this same setup to test a 8474 to see if the front end can produce 9180 like flow. Then also looking at testing a 9280, to see how it compares against a 9180.
  2. Hi Guys. This question is for any people who've built a 2.6 or 2.8 with a high compression ratio or tuned it. My CR is currently 9.6:1 on a Nitto 2.8. I want to go higher while still being able to have it be a pump gas motor for street purpose. I have flex fuel and a Haltech Elite. The highest my tuner has done is 9.5:1 with no problems on both. I've heard of a few running 10:1 but no idea if they are E85 dedicated or not. Any higher I've been told is a try it and see how it goes sort of thing. I've been told having the CR too high can upset the engine in the way that it can't be tuned as aggressively on higher boost and as a result may be more tame than a lower CR engine which can be tuned "all out" in the higher boost levels. I've heard of many big power 2J's running high comp but not many RB's It's a 800-1000hp car. Any advice appreciated if anybody here has built one or tuned one. Cheers.
  3. Anyone tried a EFR8474 yet on a RB26 or 28?
  4. There's a few people running 800 plus HP with stock size ITB's without too much issues. I wouldn't be worrying too much about it. I had the same questions when I did my build.
  5. So I never knew that the 9180 has an Alluminium CHRA option. I ordered mine from Hi-Octane website and the option wasn't on there, so I assume I got the cheaper steel CHRA. Do any rotating parts, e.g the backing plates where the wheels go get changed to alluminium or is it simply the bearing housing? Run in on my 2.8 with 9180 is done, now time to max it out and see how it drives. My future plan is twin 7163's on Hypex manifolds, all seems to be pretty promising but the new 9274 looks very promising that might be an upgrade in terms of response from the 9180
  6. Does anyone have any idea how a 8474 would compare to a 9180? The 8474's compressor flows the same 95lb/min as the 9180, but the catch is, will it ever flow reach the potential that you see on paper in reality with a smaller turbine than the 9180?
  7. Hi Guys. I'm wondering if anybody knows which 100mm cooler on a R33 GTR can keep the mesh. 9/10 people say they had to cut the tabs so remove it but I have heard isolated situations of it clearing such as a HKS one that somebody reported. I also know that HKS and Blitz i think released some new coolers too. If anybody can report something they use off the shelf that works let me know please, prefer with swept tanks to suit OEM pipes. Hypertune was test fitting their new 100mm intercoolers and came back to me it doesn't clear. So I'm looking into the Jap brands. Cheers.
  8. Hi Guys. My engine is finished and awaiting to be tuned. The idea is building a responsive car with a smooth idle and street manners. I have gone an EFR9180 1.05, I like the idea of the new 9280 but for 100hp more it doesn't seem like a big step up unless it has some hidden merits that I don't know of. Seeing factory cammed cars have made good power on single turbos, I wasn't looking to go too big with cams, so I settled on something that will still let the car idle nice. Some basic info on the power making stuff : Nitto 2.8, custom spec pistons for 9.6:1 C:R Ratio HKS Vcam Step 2 - 264 inlet 9mm lift. Tomei 260 9mm lift Exhaust 1mm Oversize valves, ported head and worked chambers Hypertune ITB inlet manifold 6boost Twin Scroll manifold. Twin TIAL MV-S Gates. EFR9180 1.05 Haltech Elite 2500
  9. RB26DETT head - Sonic Tested - Blasted - Decked - Valve seats machined - TOMEI Bronze Guides installed Price: $1500 Location : WA, Can Post
  10. Hi Guys. I'm after a EFR9180 or 8374 Cheers
  11. Hi Guys. So in pursuit of making my RB26 a well even and smooth running engine I've done a lot to it, putting all the best bits on it I'd like to know some more information on the Nismo and Greddy manifolds. The question is do they make the engine run smoother and respond better. The theory is these try to get the airflow to each cylinder as even as possible, especially fixing the 6th lean condition. Speaking to many tuners about it and a lot are in disagreement, most say with modern ECU's you can adjust the individual injector to ensure a proper A/F mixture so these manifolds won't help. My theory still is though if one cylinder is getting less airflow, for that power stroke it makes it is making less power and pushing down with less power down the crank, and the engine won't ran as smooth. So my first question is, while the theory exists, in practice how much of a difference does it make - I don't mind spending the money if it makes some improvement in your guys experience if you've ever done back to back. I know a lot of SR guys notice improvements when they put aftermarket OEM replacement plenums on but have not heard so much talk with RB26's Much reading I done mentions that this helps get the twin turbos working more evently, I'm running a single though. The 2nd question is, Greddy or Nismo, big price difference. And which ones can or can't be replaced with the engine in, apparently the engine needs to come out for these to be fitted. The Greddy one i wonder why is a 2 Piece. I'm also considering, the Hypertune multi TB plenum
  12. So Guys. What is the consensus with the 7670? There appears to be only 1 person who has run it here on a worked RB, that being Kinkstaah on your 2.8 with VCT. I'm going to be running a very similar setup : RB28 Nitto 2.8 with 9.5:1 Compression HKS Vcam 264 in. Tomei 260 out I'm going to have my 7670 on there and probably end up bolting a 1.05 rear housing to it. But from seeing the results people are saying the 7670 on these bigger engines while will work, will give no added response over a 8374 and make less power - while not proven but that's what I'm getting from the hearsay. So does anybody have any real results from the 7670 ?
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