Borg Warner EFR Series Turbo's V 2.0

[VFRegal]

9 hours ago, MaximuSmurf said:

 Otherwise I'll just say f**k it and grab 2 x 38mm gates and go external setup which SHOULD get around the boost holding issue.

I posted something similar in this thread and Geoff from Full race said that it wouldn't make any difference.
Said it was more to do with the rear housing design than the internal gate.

Nice numbers by the way.

[sneakey pete]

Is there an ETA or any more info on the 8474?

[Lithium]

4 minutes ago, sneakey pete said:

Is there an ETA or any more info on the 8474?

I haven't heard anything beyond what is already in here, I'd definitely update the thread if I have information which I'd be able to share.

[sneakey pete]

The information already in here is basically; shown off at SEMA 2016, someone had one on an evo earlier this year that made ~10% more power and that's about all we know?

Hadn't really paid much attention to it but a mate may be interested if they're going to be a thing before mid year.

[acsplit]

I assume we will know more once the 8374 stock runs low.

[acsplit]

OT Buraz turned the wick up on his 9180

2.8, 9180 1.05 Ex 580rwkw @35psi basically out of turbine speed.

[Buraz]

Have another 2k rpm to go Andrew, but yeah nearly there.

[Lithium]

10 hours ago, Buraz said:

Have another 2k rpm to go Andrew, but yeah nearly there.

How are you finding it on the 2.8?   Must be pretty perky at that power level

[Buraz]

How are you finding it on the 2.8?   Must be pretty perky at that power level [emoji3]

Comes on much much earlier than I thought, very sketchy at this power. I usually have it on 29psi setting still a handful to drive tho.

[burn4005]

comparing the dyno charts from both Umair's youtube videos, the 9180 looks to be pretty much 900rpm later than the 8374 everywhere. same engine, both 1.05A/R housings.

8374 is at: 200kw at 4450rpm | 300kw at 4650rpm | 400kw at 5050rpm | 500kw at 6800rpm

9180 is at: 200kw at 5460rpm | 300kw at 5470rpm | 400kw at 5910rpm | 500kw at 5910rpm

it appears the 9180 is being brought on a bit more gradually, then peak torque being liimited by timing (unless wheelspin?) as well

 

great to see some proper back to back figures!

Edited April 5, 2018 by burn4005
added picture

[usmair]

1 hour ago, burn4005 said:

comparing the dyno charts from both Umair's youtube videos, the 9180 looks to be pretty much 900rpm later than the 8374 everywhere. same engine, both 1.05A/R housings.

8374 is at: 200kw at 4450rpm | 300kw at 4650rpm | 400kw at 5050rpm | 500kw at 6800rpm

9180 is at: 200kw at 5460rpm | 300kw at 5470rpm | 400kw at 5910rpm | 500kw at 5910rpm

it appears the 9180 is being brought on a bit more gradually, then peak torque being liimited by timing (unless wheelspin?) as well

 

great to see some proper back to back figures!

I did change from a 5 speed to a 6 speed (with factory 33 diff) between those tunes, which would have a material impact on the dyno graphs. I.e. it's not as bad/laggier as the dyno shows it to be.

[SimonR32]

1 hour ago, usmair said:

I did change from a 5 speed to a 6 speed (with factory 33 diff) between those tunes, which would have a material impact on the dyno graphs. I.e. it's not as bad/laggier as the dyno shows it to be.

If the ramp rate is the same and the rpm is set up correctly that should have no effect

[burn4005]

road speed/revs is the same for both runs so gear ratios should be very similar.

just checked:

5spd 3rd gear: 1.302:

6spd 4th gear: 1.31

Edited April 5, 2018 by burn4005

[Buraz]

I did change from a 5 speed to a 6 speed (with factory 33 diff) between those tunes, which would have a material impact on the dyno graphs. I.e. it's not as bad/laggier as the dyno shows it to be.

How are you finding the 6 speed mate?? Was it a headache to convert?

Also just out of curiosity why is it dynoed in 3rd. I know it doesn’t matter much but just curious as every tuner wants to dyno at 1:1 ratio or close to it

[burn4005]

the 1:1 thing is a bit of a wives tale.

Final drive ratio has an inversely proportional relationship to velocity, and a proportional relationship to Torque.. so the gear ratio completely drops out of the power equation. 

Actual torque is really high in lower gears, any torque plot is just a 'normalized' plot at 1:1 mechanical advantage... really just brake torque neglecting drivetrain losses

dyno in a high gear so the dyno doesn't have to work as hard to retard the engine (especially if you want a slow ramp on a powerful car), but also at a speed that is considered safe.

300km/h is a lot of rotating momentum.

Edited April 5, 2018 by burn4005

[usmair]

3 hours ago, Buraz said:

How are you finding the 6 speed mate?? Was it a headache to convert?

Also just out of curiosity why is it dynoed in 3rd. I know it doesn’t matter much but just curious as every tuner wants to dyno at 1:1 ratio or close to it

pretty straight forward to convert although apparently when converting into a 33, you have to remove a part or not connect a part (or something...... my mechanic mentioned it to me once) so on idle/at traffic lights the box just rattles lol. bit annoying but you get used to it.

other than that its awesome for street use. Not so awesome for the strip or roll racing as I'm changing into 5th just before the line.

Also a bit worried if i break something then it would be a very expensive exercise to repair.

Also an FYI - if all goes to plan I'll be heading out to WSID on 11th April to see what this extra power does for ET and MPH. Stay tuned.

[r32-25t]

Wouldn’t you be starting in second for roll racing anyway?

cause I was using 1st to 4th in the 5spd and now with the 6spd I’m guessing I’ll be using 2nd to 5th, so itll be the same number of gear changes 

[usmair]

11 minutes ago, r32-25t said:

Wouldn’t you be starting in second for roll racing anyway?

cause I was using 1st to 4th in the 5spd and now with the 6spd I’m guessing I’ll be using 2nd to 5th, so itll be the same number of gear changes 

Might try starting in 1st to get the 9180 to come quicker.  See how 50km reacts in 1st lol

[burn4005]

Don't worry, all the r34 getrags rattle once you go to a single mass flywheel. It's normal despite every man and his dog telling you there is an issue.

 

 

[r32-25t]

37 minutes ago, usmair said:

Might try starting in 1st to get the 9180 to come quicker.  See how 50km reacts in 1st lol

With the 5spd I was at 6500-7,000 at 50kmh in first so was starting at 40 to make it useful, so with the 6spd I imagine it being even higher lol