[Closed] Borg Warner Efr Series Turbos

[Lithium]

I am sure its going to be good regardless, look forward to hearing the results. In regards to ridiculously punchy turbos that make a bit of power still, will be tuning an S14/SR20 running a PE1420 on E85 soon... that should be a bit different too.

[GTScotT]

nup he made the right choice. I have a fair bit of info (that I can't share just yet) on 6255 v 6258 vs 6758 but I can tell you the 6258 is the gun set-up in that range for what he wants to do with his SR20. All three have their optimum applications I'm sure but for that I think he's made the right choice.

I am thinking about trying a pair of them on my 2.7 GTR currently running twin HKS 2530s...

Know anything about the B frame items ?

[scandyflick]

Nice - that should be pretty awesome! 6258 though? I'd have been pretty tempted to get a 6758 after spending that much, HKS GTRS are amazing on SR20s and the 6758 is still smaller so isn't exactly going to be laggy.

PS: I saw your avatar etc previously and thought nothing of it as I frequent the HevyDevy forum and you get used to that, but this is SAU - AWESOME I have Deconstruction and Ghost preordered haha

I did a bit of research on 6255, 6258, and 6758, and spent a bit of time chatting with a mate who had done even more research.

I basically came to the conclusion that the 6255 was a little on the small side,

the 6758 was getting a little on the large side for a standard bottom end and box (I'm overly cautious),

and the 6258 is basically the perfect fit for what I want.

Ha! Excellent! Someone else with awesome taste in music. On SAU no less... That's a bit unusual.

nup he made the right choice. I have a fair bit of info (that I can't share just yet) on 6255 v 6258 vs 6758 but I can tell you the 6258 is the gun set-up in that range for what he wants to do with his SR20. All three have their optimum applications I'm sure but for that I think he's made the right choice.

Awesome! That's what I like to hear.

[D_Stirls]

When i finally get around to running in my engine and then changing turbos i'm think of going for a TS 6758 on my forged CA18, will be running E85, HKS 264x9.0 cams and there's been a little bit of port work done as well. I was considering going for a TS 7064 but since the car will be used for circuit work mainly I though it would be better to keep the power down slightly in return for more response.

[scandyflick]

So, I got a call from FedEx about 12 hours ago.

My turbo has arrived and has cleared customs.

Heaps earlier than I expected, should be at my door some time Thursday.

[Super_Dude]

My 8374 is sitting in the box beside my car waiting to be tossed onto the my RB30. It's book for the dyno end of the month so if all goes well I will posting results in the next couple weeks

[Lithium]

Awesome!

[D_Stirls]

Pic's people, we want pic's and lots of them

[bigmikespec]

Does anyone else think it is strange how BW does not have a lot of the import market here is Australia? Even the first generation of Airworks turbos like the S300SX, etc were not that popular despite being so well priced. For around $1k you can get a S200SX, S300SX or S400SX... it is not as if people have gone to the limits with these turbos either and are looking for better things (i.e. the EFR range).

[zebra]

That would be because its follow the leader here in Aus.

a couple of cars get ok results on GT30s then 1000 cars have them....or because HKS turbos are done by garrett and everyone wants those.

[scandyflick]

This arrived at my door today;

Needless to say, I was pretty excited.

6258, high and low pressure actuators, and exhaust v-band. Boost controller fouls on my manifold.

Very cool things, workmanship is very high, as is the quality, can't fault it at all. Gate port is f**king huge for such a small turbo, and the wheels are works of art, could stare at those all day. Spins forever when you wind it up by hand. And the locking tabs for the turbine housing are a brilliant idea.

Can't wait to get it all fitted.

[Beer Baron]

awesome pics mate. thanks for sharing. I've been longing to see some good pics of one apart for a while. they are a cool design for a small IWG turbo.

anyone received and tried a 9180 yet? we have one coming soon and very anxious to see how it goes.

[zebra]

Good looking bit of gear

My only concern is the gate flap that protrudes directly into the main exhaust stream. I'm assuming that it won't open all the way out like in the pics though so should be ok

[scandyflick]

I doubt it will swing all the way into the main stream. Probably end up moving less than half that distance. It's one of those 'I'll check it out whenever I get around to it' sort of deals though.

[zebra]

Cool cool. Can you chuck some pics up of the Max opening with the actuator attached when you get around to it?

[scandyflick]

Will do.

[TiTAN]

Cool cool. Can you chuck some pics up of the Max opening with the actuator attached when you get around to it?

looks like the way its designed, the flap opens and merges the gas around the edge of the exhaust housing lip so the gas is designed to merge in nicely rather than disrupt the flow. well thought out bit of gear.

[Lithium]

Very nice, and keen to see results I see someone in the states has done ~270wkw with one on an SR20 already, though the spool sounds like its more comparable with a GT2871R - at least on the dyno.

[Ryan1200]

Very nice, and keen to see results I see someone in the states has done ~270wkw with one on an SR20 already, though the spool sounds like its more comparable with a GT2871R - at least on the dyno.

Link to results please?

[bigmikespec]

I am interested to know why the move to ball bearings on these turbos... guys such as Full-Race have flown the flag with the Airwerks range saying the ball bearing is a myth in terms of mech. losses (friction), etc. And now the EFR has been released with ball bearing and it is no surprise that it is more expensive.

So why the change? Market driven and hype or are there actual performance benefits. You would expect it to spool quicker from the wheel design and material selection more so than the bearing type. At least this is what BW tried to sell to everyone before.