Borg Warner EFR Series Turbo's V 2.0

[usmair]

1 hour ago, gzro said:

600atw would be nice and slightly more, activated via scramble boost when required would be great.

Feedback i have gotten so far is the 0.92 housing fits perfectly on a 2.6l but on a 2.8l with vcam, maybe i should be looking at something slightly bigger.  I already have the 8374 with 0.92 and getting the 1.05 housing alone is not worth it. 

So the option now is to stick with what i have or sell the 8374 and get the 9180 with 1.05 housing.  Cant remember where I read this but some posted that the response between the 2 are almost the same - maybe 500rpm difference?

 

I've got 8374 1.06 on a 2.6

For a 2.8L i'd def go 9180 1.05

[Nismo 3.2ish]

30 minutes ago, usmair said:

I've got 8374 1.06 on a 2.6

For a 2.8L i'd def go 9180 1.05

should be interesting to see the 8374/1.05  on a 3.2 with Vcam   handles it

[Piggaz]

3 minutes ago, Nismo 3.2ish said:

should be interesting to see the 8374/1.05  on a 3.2 with Vcam   handles it

Your goals are a little left to the "norm". Just need to keep an eye on speed.

[burn4005]

yea that's going to be out of puff at 25psi at 7500rpm, and out of speed not much later.

but jesus it'll come on early.

Edited February 15, 2017 by burn4005

[Nismo 3.2ish]

Already have the limiter at 7800 with the 6266 . I just feel if you are going early, you do not have to bash it past 6500 , horses for courses . I am busting to see just where it does get Asthma . Probably close to where it is now ?

Keep an eye on the road mate, not the speed. But that speed sensor you picked up for me will come in handy and may keep some moving parts out of the donk, lol

I think this will suit me just fine

[usmair]

By the way gents, I'm gonna cram another 3-4 psi into the 8374 towards June/July when the weather cools down

See if the stock bottom end can take it

[Dose Pipe Sutututu]

9 hours ago, usmair said:

By the way gents, I'm gonna cram another 3-4 psi into the 8374 towards June/July when the weather cools down

See if the stock bottom end can take it

Do it, just don't put too much timing towards and at peak torque. I would even take timing in the middle and ramp it once torque decays.

[burn4005]

Would it not be more efficient to leave timing at MBT but ramp boost instead?

[Dose Pipe Sutututu]

What I was recommending is how to preserve the bottom end by limiting torque, so once you past peak torque you can go nuts with the boost and or timing to make the numbers.

This is a technique good EVO tuners use to stop the pencil conrods snapping with stock EVOs making 300kW+

[sneakey pete]

Pfft, there's no fun in preserving anything though. Full boost as soon as possible, that's the only way!

[GTSBoy]

Simple rule is always simple.  Turbo motors make power using boost, not timing.

[acsplit]

20 hours ago, Nismo 3.2ish said:

should be interesting to see the 8374/1.05  on a 3.2 with Vcam   handles it

I will share some results of 8374 1.05 on a 3.2 for comparison. Pity we can't find a way to measure transient response because that seem's to be where these turbo's annihilate others on the market.

[Nismo 3.2ish]

2 hours ago, sneakey pete said:

Pfft, there's no fun in preserving anything though. Full boost as soon as possible, that's the only way!

not only our name in common, lol

[Dose Pipe Sutututu]

6 hours ago, sneakey pete said:

Pfft, there's no fun in preserving anything though. Full boost as soon as possible, that's the only way!

ahh you see, if you pull timing you'll get boost even sooner with the expense of not reaching MBT for that RPM at that Load point..

[sneakey pete]

4 hours ago, acsplit said:

I will share some results of 8374 1.05 on a 3.2 for comparison. Pity we can't find a way to measure transient response because that seem's to be where these turbo's annihilate others on the market.

Get ECU to log speed, rmp, boost and TPS over time, get to a speed and stand on the throttle.

53 minutes ago, Dose Pipe Sutututu said:

ahh you see, if you pull timing you'll get boost even sooner with the expense of not reaching MBT for that RPM at that Load point..

Ah, thought timing helped with that.
That's why i pay someone to tune my car

[HarrisRacing]

Note to all.

Finally moved my cam gears on the dyno. Spent 4 hours there yesterday (on a dynocomm inertial - which will soon be eddy brake). I now see what a V-cam would do for you. Moving my Poncam A's closer together (ie-more overlap) yielded undeniable tq gains with no appreciable drop in top end power (my 3" exhaust could be holding me back). I think it liked 8 total degrees of CRANK overlap (2 notches off from '0' on each cam) the best (Advanced intake 4, Retarded exhaust 4), but we did run add another 2 deg (crank) to the intake to bring it to 6 deg intake advance and 4 deg exhaust advance and this is where it stayed (for now). Super choppy idle now, but damn this car pulls like CRAZY now. makes 3 more psi boost at 4k rpms. When I compared 20 psi runs with cams set at 0 the tq goes to the stratosphere. Look at the differences from 4500 rpms to 7k! At 22 psi high number is now 653 whp and 515 wtq but boost control was shakey on these runs (oscillating from 22 down to 18).

It is making 300 WHP at 4k rpms on 20 psi...on 93 octane pumpgas! This is my 8374 EFR .92 IWG on a stock-bore 79mm BC stroker FYI.

 

[HarrisRacing]

Also it should be noted that from a 2k rpm pull on the street in 3rd gear this turbo will make 15 psi at 3600 rpms right now.

[Lithium]

That's much more like what you'd expect to see, nice work - must be huge fun to drive now!  Not that it would have been shabby before, but..

[Snara]

On 20.02.2017 at 2:59 PM, HarrisRacing said:

Note to all.

Finally moved my cam gears on the dyno. Spent 4 hours there yesterday (on a dynocomm inertial - which will soon be eddy brake). I now see what a V-cam would do for you. Moving my Poncam A's closer together (ie-more overlap) yielded undeniable tq gains with no appreciable drop in top end power (my 3" exhaust could be holding me back). I think it liked 8 total degrees of CRANK overlap (2 notches off from '0' on each cam) the best (Advanced intake 4, Retarded exhaust 4), but we did run add another 2 deg (crank) to the intake to bring it to 6 deg intake advance and 4 deg exhaust advance and this is where it stayed (for now). Super choppy idle now, but damn this car pulls like CRAZY now. makes 3 more psi boost at 4k rpms. When I compared 20 psi runs with cams set at 0 the tq goes to the stratosphere. Look at the differences from 4500 rpms to 7k! At 22 psi high number is now 653 whp and 515 wtq but boost control was shakey on these runs (oscillating from 22 down to 18).

It is making 300 WHP at 4k rpms on 20 psi...on 93 octane pumpgas! This is my 8374 EFR .92 IWG on a stock-bore 79mm BC stroker FYI.

 

Power is WHP, so it's about 750HP on engine right? Awesome spool.

This is on 93 octane, what difference can be on 98 octane ? Better spool or power ?

[sneakey pete]

93 octane is 98.