Jump to content
SAU Community

Recommended Posts

i think the 7163 is a bit small for a high boost rb26, as it can be overspun. Same with 7670. however they both provide excellent spool and response so if you use a shaft speed sensor to keep things in check you could be very happy with either on an RB26 - just be prepared to taper the boost up top. The 8374 comes on strong around 3300-3400rpm - so it might be bigger than you like, but i really enjoy it on the RB26 (its one of my all time favorite turbo/engine combinations, so much fun to drive). I am putting the 8374 0.92 back on my RB26 in a couple weeks, after i put the 7163 on my evo

Geoff if you get a chance chuck up the graph for the 26 and 8374...

One day when I'm feeling rich I might do the swap from my 6262

Geoff if you get a chance chuck up the graph for the 26 and 8374...

One day when I'm feeling rich I might do the swap from my 6262

I second lol !! However, my next purchase is planned within the month ( depending if my turbos are actually shot or not)

  • 3 weeks later...

With the internal gated single, say an 8374, do you just use the external gated twin scroll manifold and just block the two gate runners off? I can't see a internally gated option for the manifold.

The other day i saw the McLarens V8 engines they are using in their MP4 & P1. Intersting to note the turbos look a hell of a lot like internal gate EFR turbos hanging off the manifolds

Funny thing is I have a pic in a book at home of a Pontiac Solstice turbo setup (I think?) which featured a twin scroll internally gated turbo with an integrated BOV in the compressor cover (I got the book before EFRs existed)... hard to say what else uses them, or similar ideas, but I found it really interesting.

^ Are those factory turbos manufactured by Borg Warner by any chance?

**EDIT**

After a little bit of research, the turbos for the McLaren M838T engine are sourced from MHI

Edited by Tonba

I can't remember specifically, I just recall the EFRs looking familiar when I first saw them and then later remembering how interesting the ones in the book looked. When I get home tonight I'll try and remember to look it up and maybe post a pic

  • Like 1

I don't know of any reliable OEM ones yet, so I am guessing it's for the same kinds of reasons. The late model Porsches are frequently going back for warranty claims, afaik.

  • Like 1

With the internal gated single, say an 8374, do you just use the external gated twin scroll manifold and just block the two gate runners off? I can't see a internally gated option for the manifold.

Full race have an iwg manifold option

http://www.full-race.com/store/efr-turbo-manifolds/nissan-rb26-25-20-det-t-twin-scroll-iwg-efr-turbo-manifold.html

Though id go the 1.05 rear twin ewg option on your car thats the setup I run and I can only imagine with the 2.8L it would be even better :)

  • Like 1
  • 2 weeks later...

I initially though they were airwerks due to the fact the FMW compressor wheels are apparently the same wheels as EFRs.

But then I saw the pic of what they actually run, which looks to be a custom casting.

borg-warner-turbochargers-used-in-the-iz

So can we buy these goddamn things or what??? Lol... particularly if we can get it with the 1.45A/R turbine housing.

Edited by bigmikespec

So can we buy these goddamn things or what??? Lol... particularly if we can get it with the 1.45A/R turbine housing.

EFR 9180 1.05 a/r is in stock, the 1.45 a/r starts shipping in 1-2 weeks.. making progress :)

With the internal gated single, say an 8374, do you just use the external gated twin scroll manifold and just block the two gate runners off? I can't see a internally gated option for the manifold.

you can block the WG ports off or use a non-wastegated manifold. here is our RB26 IWG efr turbo manifold:

75012_10151372490682527_2031045298_n.jpg

Full race have an iwg manifold option

http://www.full-race.com/store/efr-turbo-manifolds/nissan-rb26-25-20-det-t-twin-scroll-iwg-efr-turbo-manifold.html

Though id go the 1.05 rear twin ewg option on your car thats the setup I run and I can only imagine with the 2.8L it would be even better :)

the twin wastegates are the call for maximum performance. I hope you are happy with the setup!

So which one should provide a better spool the IWG 0.92 or the EWG 1.05 ? or wastegate don't really affect spool up, only boost control ?

the smaller a/r will usually spool the turbo quicker.. as long as the wastegate doesnt crack open prematurely it wont affect spool. The solution is to use a stiff WG spring. turbosmart IWG has been popular lately becuase it uses the same springs as their EWG (up to 3)

I can't remember specifically, I just recall the EFRs looking familiar when I first saw them and then later remembering how interesting the ones in the book looked. When I get home tonight I'll try and remember to look it up and maybe post a pic

i believe BW made the turbos for that saturn skyy/pontiac solstice platform. as well as the cobalt. And the 2011-2012 EcoBoost F150, and 2012+ Focus ST EcoBoost, Fusion, etc.. audi and volvo they all used that style Compressor recirc valve. It works well

Yes I know you can buy housing separately, it would be nice if you can just buy one direct from BW or even from a Indy team???

indy teams now run twin EFR7163 only. there may be some used 9180s floating around, but keep in mind it was not in a ported shroud housing so actually the standard EFR9180 compressor housing will slightly outperform the indy 9180 - given the same turbine housing A/R

Edited by Full-Race Geoff

indy teams now run twin EFR7163 only. there may be some used 9180s floating around, but keep in mind it was not in a ported shroud housing so actually the standard EFR9180 compressor housing will slightly outperform the indy 9180 - given the same turbine housing A/R

What is the reason for switching to the twins?

I would have thought the opposite as the surge slots bypass air to avoid surge hence efficiency losses.

Any plans to bring the mixed flow turbine wheel into other sizes apart from the 7163? If so, what would be the better ass end. The open scroll mixed flow or the twin scroll?

Also very interested in this.

Also interested if BW are looking at a 64mm turbo to fit between their 8374 and 9180?

Guest
This topic is now closed to further replies.



  • Similar Content

  • Latest Posts

    • You're not the first person that's said that about this car lol. A Touring wagon GT in Spark yellow mica would be the dog's danglies 😆 I will keep an eye out for a future purchase for sure. The seats are almost like the OEM Recaros... electric adjustment for fore/aft and tilt movements except reclining.   
    • Yes!! I love these! It's a shame its not the wagon though!   Thank everything that's holy that it doesn't have the interior of the Aussie delivered ones. Those seats are so much nicer.  
    • I'm both sorry and thankful that you do that. 
    • 2001 BE5D Subaru Legacy B4 RSK (3rd gen) EJ208 (pink injector) Twin Turbo 280PS 5-speed manual Full time 4WD "RSK" grade which means all of the above LQC option which means stock rear spoiler  I got it primarily to export to someone outside Japan who was interested. These BE5 Legacy B4 RSKs are going through a bit of a resurgence right know in Japan as they are one of the few cars from the "turbo, manual, RWD/4WD, 280hp gentleman's agreement era" cars that don't require stupid money to purchase. Which for some people might be a good opportunity to get as a base for restoration. If I can't find anyone to purchase it I will certainly be doing that myself over the long term. Why? Because it's properly fast in stock form, handles well enough for a GT sedan, there's still enough aftermarket and (if you can wait a while) genuine part support to make it a restoration candidate (<-- that will only get worse over time so it's a case of do it now or choose get a BL5 4th Gen). Mechanically it's fine, has only 89,200kms on the odometer. The problem with this car is that the body and exterior trims are weathered from at least the last 10 years being parked outdoors. I'm the 3rd owner, the first owner was the one that had it for 14 years and barely drove it, had a low-speed front impact (which didn't damage anything behind the radiator support) and got it fixed and sold it. The 2nd owner put most of the kms on it and parked it outside for the last 10 years, hence the door rubbers have seen better days but if you overlook those cosmetic details, it presents pretty nicely. There is some minor rust on the LH rear wheel arch which I'll have looked at too at some stage.  Also as you'd expect from a car this age, the clear top coat is gone, leaving a satin finish on the roof.  Mechanically it's fine (as you would expect from a car with less than 100K kms) but the steering does feel slightly vague around the centre position at higher speeds. So first on the list is to get the steering rack bushes looked at. There's also the Lock button on the remote which doesn't work, but the Open button does.... it means that the anti-theft system thinks it's always open? It seems like if you open the car and don't start the engine within 3 mins or so the anti-theft kicks in again without any beeps or signals. So if you got to start it after that, it won't. You have to push the open button again. That's how I understand it anyway. Just a small irritation but not a big problem to sort out. There's only one mod, the Wangan SPL muffler. Just a tad louder than stock. It's a really good mod for those who don't want to wake the neighbours but still want to hear a more prominent unequal length header EJ20 sound. Anyway I hope to get all those things done eventually, that is unless someone wanted to import it to their country from Japan (where I live). I'm open for negotiations as I really would like a Skyline... but this will definitely suffice in the meantime 🙂 *Disclaimer: This is how I picked it up from the dealer, minus the stuff on the back seat. I haven't cleaned the engine bay or done a thorough exterior clean, aside from spray painting the wipers. 
    • Wow, even with the Audi logo centre caps. I love OEM wheel mismatches. 
×
×
  • Create New...