[Closed] Borg Warner Efr Series Turbos

[Missileman]

300kw by 105kph ...hmm I Like

[Piggaz]

http://www.full-race.com/store/turbos/borgwarner-efr/borgwarner-efr-9174-turbo-1.html

9174 has been released also.

[burn4005]

Stout power. I am a bit surprised at how late it hits full boost. If 170kmh 8000rpm then 115 is about 5500.

[burn4005]

Here is a 6266 on a 2.6 on what I assume is the same dyno. Notice it goes to 210km/h so scaling is different.

Assuming 8k limit, @135km/h its on full song at about 5200.

Edited September 10, 2015 by burn4005

[Piggaz]

Stout power. I am a bit surprised at how late it hits full boost. If 170kmh 8000rpm then 115 is about 5500.

You're assuming the run goes to 8000 rpm.

[burn4005]

True ebough, if its 7.5 its more like 5k.

I'd be interested to hear what the scaling actually is. I've always liked the efr83s as my next turbo, so if he's let off at 7.5k ish and making that power on a 2.6 I'll be extremely impressed with it.

As with most things I don't think the dyno plot can explain the response of it, but I'm betting its miles better than dash 5s at circa 2 bar. The efr looks like it comes on very smoothly.

Edited September 10, 2015 by burn4005

[Piggaz]

True ebough, if its 7.5 its more like 5k.

I'd be interested to hear what the scaling actually is. I've always liked the efr83s as my next turbo, so if he's let off at 7.5k ish and making that power on a 2.6 I'll be extremely impressed with it.

As with most things I don't think the dyno plot can explain the response of it, but I'm betting its miles better than dash 5s at circa 2 bar. The efr looks like it comes on very smoothly.

Going off what Brett has said. 22 psi was reached at 4300 RPM which on that graph is 105 km/h. It's making just on 300 kW at that point.

[Full-Race Geoff]

Posting on behalf of "Reaper".

Stock N1 engine (V spec II nur)

Borgwarner EFR 8374 1.05 AR rear

AI industries surge tank and Holley 1800 dominator pump with Walbro E85 intank pump

Bosch 2200cc injectors

Tial 44mm wastegates

Full Race twin scroll

4" dump into 3.5" kakimoto exhaust

ATS carbon twin clutch

HKS 100mm intercooler

HKS Step 1 V cam (248 @ 8.6mm)

Jezzebelle stopped there because of the standard engine.

* Green line is as it was dropped off, Red line was the final result.

stock longblock, small cams and simple setup! this car is probably much more fun than a dynosheet can explain, hopefully Reaper is pleased with the outcome

[SimonR32]

You're assuming the run goes to 8000 rpm.

Gear used, tyres and diff ratio?

[Piggaz]

Gear used, tyres and diff ratio?

I'll know more soon.

[Full-Race Geoff]

2jz with twin 6258s -- slightly OT, but too cool not to share:

"Geoff, wanted to keep you in the loop. Re dyno'd the twin 6258 IWG car on E85. Got her to 32-33 psi and ended up with 922 whp and 790 tq at 4600 rpm !! This is a 8.5-1 engine with a stock head and 264 stock base circle cams. Wowzer…I attached the dyno chart with the C16 vs E85 max effort pulls.. So impressed really. Cant wait to fire my car up with 7163’s…Thank you

Eric"

Edited September 12, 2015 by Full-Race Geoff

[burn4005]

jesus. 700hp at 4600rpm!

that is STOUT.

[jangles]

jesus. 700hp at 4600rpm!

that is STOUT.

I don't want to start a war..but you must remember its American

[cobrAA]

stock longblock, small cams and simple setup! this car is probably much more fun than a dynosheet can explain, hopefully Reaper is pleased with the outcome

at 4k $ the v-cam are far from ''small simple cams '' IMO

Edited September 12, 2015 by cobrAA

[reaper]

Gear used, tyres and diff ratio?

5th gear, 285/30/18 rsr's and standard 34 gtr diff ratios with the standard 6 speed

[reaper]

at 4k $ the v-cam are far from ''small simple cams '' IMO

Its a type a vcam intake with a type b poncam exhaust so they are pretty small especially considering no porting or anything at all.

[burn4005]

5th gear, 285/30/18 rsr's and standard 34 gtr diff ratios with the standard 6 speed

Can't have been 5th gear.

5th @8000rpm is 220. top of 4th is 168km/h. which matches plot exactly.

so full boost@115km/h is 5475rpm.

300kw @ 5000rpm

400kw @ 6000rpm

***ignore above.. bad maths***

Edited September 14, 2015 by burn4005

[reaper]

Wait what? Ive been far faster than 220 in 5th gear and 168 in 4th, those numbers seem way too low...

[burn4005]

whoops! they are, good pickup.. sorry i under calculated the tyre circumference.

using circumference 1973.55mm (https://www.mcgrefer.com/sizeinfo/2853018) for a 285/30/R18

speed peak of dyno of 169km/h in each gear:

3rd (1,685): 8500rpm.

4th: (1,312) 6650rpm

5th: (1.000) 5050rpm

it appears it was done in 3rd.. could an 8500rpm readline be correct?

that means spooling (10psi) around 4500 and full boost (27psi) at 5800rpm

Edited September 14, 2015 by burn4005

[Piggaz]

whoops! they are, good pickup.. sorry i under calculated the tyre circumference.

using circumference 1973.55mm (https://www.mcgrefer.com/sizeinfo/2853018) for a 285/30/R18

speed peak of dyno of 169km/h in each gear:

3rd (1,685): 8500rpm.

4th: (1,312) 6650rpm

5th: (1.000) 5050rpm

it appears it was done in 3rd.. could an 8500rpm readline be correct?

that means spooling (10psi) around 4500 and full boost (27psi) at 5800rpm

No.

There is a graph from very early on in the tuning process. 10 psi at 4500?