[Closed] Borg Warner Efr Series Turbos

[GTScotT]

Unless I can trade my existing manifold I'd be going T3, I just have a good bolt in kit I want to use.

ill see what comes up in the lead time :-)

[NismoSTune]

the car we've been working on is the keeper's R34 GTR with 2.6L and twin 6258s (this is not a high reading dyno)

We also have an R34 and an R33 getting the same kit on 2.8L engines over the next couple of weeks. The only r32 gtr @ Full-Race is the front clip I bought to use for mockups.,, Perhaps you are thinking of Danh Tran's carbon R32 time attack machine? he is under the gun prepping for WTAC right now: https://www.facebook.com/danh.tran.10

Before the keeper's efr6258, he had -5 twins.. we tried many different piping configs and i dont see how its the pipe design that causes the shuffle... but if your experience got rid of it then great.

Sorry to bring this up again... I'm curious what size of intake filters these cars were able to fit. Twin 3"? 3.5"? 4"?

They appear crowded in so I wonder how much intake piping they could fit.

[Sub Boy32]

From this thread: http://www.skylinesaustralia.com/forums/topic/341890-borg-warner-efr-series-turbos/page-50#entry6409057And a later update for the same car with a stiffer spring and retune, still on pump gas - 470kw: Build thread: http://www.gtr.co.uk/forum/1760881-post678.html

Here's a quick vid of it running, sorry for the sh1t filming, I'm still learning how to use the camera

[reaper]

Well I just pulled the trigger on a full race 8374 1.05 setup with manifold and twin 44mm gates so here's hoping it's everything I hope it will be!

[Lithium]

Yummm. That is all.

Next time need some load on it

[Full-Race Geoff]

Unless I can trade my existing manifold I'd be going T3, I just have a good bolt in kit I want to use.

ill see what comes up in the lead time :-)

one option you could consider is to run the 7670 with T3 turbine housing initially. Then, later on if you wanted to go twinscroll - just swap to a divided manifold and a divided housing

Sorry to bring this up again... I'm curious what size of intake filters these cars were able to fit. Twin 3"? 3.5"? 4"?

They appear crowded in so I wonder how much intake piping they could fit.

the twin turbo kits use B1 EFR turbos. these all have 2.5" inlet. You can step that up to 3" if you like, but there is zero benefit to 2x 3.5" or 2x 4" on a twin setup

Here's a quick vid of it running, sorry for the sh1t filming, I'm still learning how to use the camera

sounds healthy

Well I just pulled the trigger on a full race 8374 1.05 setup with manifold and twin 44mm gates so here's hoping it's everything I hope it will be!

thats my favorite combination ive run on the RB26 over the years, you wont be disappointed

[Sub Boy32]

Yummm. That is all.

Next time need some load on it

Haha, it's belting down with rain here, so not today!

[reaper]

Love the video! Are you able to rev it a little more so we can hear that turbo spool a little (understand if you dont want to)

Edited October 8, 2013 by reaper

[cobrAA]

external wastegate ; is it still civil for street driving ? or too loud?

[cobrAA]

Haha, it's belting down with rain here, so not today!

is it a wrap on the surround? look great.

[Piggaz]

external wastegate ; is it still civil for street driving ? or too loud?

Screamer? I suppose everyone has their own view but its way, way too loud. Everytime you give it a bit you have to listen to that - No thanks!

[NismoSTune]

Screamer? I suppose everyone has their own view but its way, way too loud. Everytime you give it a bit you have to listen to that - No thanks!

I agree. IWG and No/recirc blow off valve is best for street unless you're into that stuff. Then again, my PPG dog is louder than my exhaust....

But I'd guess the EWG is best for track car.

If your car is mainly street (and even more so if its your only car), keep it simple. IWG

[Piggaz]

External is fine, just plumb it back into the exhaust.

[Cyifly]

External is fine, just plumb it back into the exhaust.

Agree with this I'm running external. Still loud under boost, but what skyline isn't with an exhaust under boost ? Lol

[Lithium]

No louder than a normal internal gate if it is plumbed back in From memory some Audis used external wastegates from factory haha

[Sub Boy32]

is it a wrap on the surround? look great.

Do you mean the dash surround?

If so, yeah, it is 3M dynok.......too poor to afford to get someone to make a real carbon one haha

[NismoSTune]

I dunno, my tomei exhaust is too quite, all I hear is gearbox in my gtr

[Trozzle]

Put a motorcycle muffler on the screamer pipe that'll sound ridiculous

[discopotato03]

I wish BW'd get the finger out with the B1 7163 turbo because it's been soooooo long in the pipeline . I keep searching for new info/results but all I find is limited testing with prototypes and they've changed over time . About the only thing I've read recently is that they (I think) developed to be in step with Indycar apps and possibly that held them up . I'm guessing the "little" extras like the aluminium centre housing and the mixed flow turbine wheel have gone through the competition R/D wringer .

Anyway if you see GT3076Rs as the yardstick to measure RB25DET turbos with then the 7163 should do anything they can and in theory be better everywhere , except packaging and cost .

Being a B1 cartridge size these may or may not get the 0.83 AR T3 flanged single scroll IW turbine housing like the B2s do . There is supposed to be a T4 twin scroll IW housing for them but not sure about T3 . It's hard to say if there is sufficient call for an open T3 IW B1 housing though BW obviously thinks there is for the larger frame 7064 7670 etc .

Anyway if the 7163 really can smash everything up to 500/550 Hp whilst being light and reasonably compact , at least diameter wise , BW should clean up .

The market has waited so long for these turbos and you have to wonder what other turbo manufacturers are brewing up behind closed doors . You can wait too long and many have given up spending their money elsewhere .

[Lithium]

Alas, don't expect logic to dictate success. FP have been making turbos for 5 years which outperform the the GT and even the relatively new GTX range by a margain and they are still hardly considered or used ... at least in this part of the world.

If you believe the chest puffing, Garrett are getting nearer to releasing their gasoline dualboost technology and potentially will move the bars for performance expectation for mid size turbochargers.