turbochargers for 500hp

[PRY4SNO]

Here's another, focused on the EFR7670 and some Garrets.

http://blog.perrinperformance.com/borg-warner-efr7670-turbo-exposed-and-tuned-part-2/

[A80Avant]

Very interesting figures on the 7163 EFR. Makes me think that might be my next choice.

Do these come without the BOV or solenoid? Especially since we use different equipment?

I also noticed this one only comes as 0.85ar but still has a beautiful minimal lag with ability to reach 500hp

[Billman]

In this test as you can read the EFR7163 was with 0.63AR turbine housing while the EFR 7670 was with 0.82. Also the GTX3076 tested had also a 0.82 AR turbo. You cant really compare.

[Albert]

The below graph is the GT3076r with smaller more comparable .63ar housing.






With GTX3076R we would probably see similar spool but more top end power.

[nicksonmsport]

Those borg warner seem to spool up very well ans give good torque. But they do come with internal wg and dump valve built in. Can these be removed easily enough to run ext wg etc.

[Billman]

Full boost (20psi) at 3500 rpm with EFR 7163 with 0.85AR turbine housing on 2.5 lt Subaru engine.

http://www.full-race.com/store/turbos/borgwarner-efr/borgwarner-efr-7163-turbo.html

[S2central.net]

Those borg warner seem to spool up very well ans give good torque. But they do come with internal wg and dump valve built in. Can these be removed easily enough to run ext wg etc.

diesel-des has a variant of the EFR6758 that runs external WG and DV... dunno how much of the external WG is off the shelf option vs 'desmods'

[Thuppu]

Full boost (20psi) at 3500 rpm with EFR 7163 with 0.85AR turbine housing on 2.5 lt Subaru engine.

http://www.full-race.com/store/turbo...163-turbo.html

Nice price! And you get same result as with an tractor turbo.

[A80Avant]

Nice price! And you get same result as with an tractor turbo. [emoji481]

The HX35S is 800 euros and add the shipping cost that's going to be around 900 euros.

Buying a garrett is in the region of 1500-1600 euros and as they are more readily available you can pick them up on most turbo shops.

The efr I don't know. But if you were to order it from the USA then I'd expect 2000$ or 1550euros with shipping included.

So the price difference is there but it's not 350euros for a holset as it's been repeatedly mentioned on several occasions.

[Billman]

This EFR 7163 has a 57/71mm compressor and turbine with a large diameter of 63 or 64. Cant find the small diameter though. This turbo is HX35 range. Not super not fancy hybrid.

Appart from the above not only KKD sell Holsets. I never bought a Holset for 800 Euros. There are also other sellers....

[vti2]

You kann get a Holset for 700€ from Turbozentrum-Berlin

[Albert]

You get what you pay for

[Jaswan]

a responsive turbo is a good think, but too much boost/torque low down will break something.

[Albert]

a responsive turbo is a good think, but too much boost/torque low down will break something.

yes ! over 600Nm problems start, specially on low revs

[diesel des]

What sort of problems other than clutch slip. I want over 500 ft lb....

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