damn what a good find

 

Gauges used with speed sensor on EFR Turbos

http://www.roadragegages.com/

 

Ok, that matchbot application on Borg Warner's website is awesome. I've got something very similar with Excel for the Garrett maps, but man, having all the info for the turbines is awesome...

That 70mm compressor is BAD ***.

 

Are more efr turbos on display? can you post more pics?

again, thanks for your help

 

don't play with my heart geoff, i've been hurt too many times.

 

Argh I reckon, this SSE dyno plot etc would be great to see.... very very keen to see what the 8374 has to offer. I have noticed so far from compressor maps that there isn't any magic in terms of the smaller wheels flowing more... comparing to equivalent sized Garrett GTseries ones the EFRs seem to flow less on more conservative pressure ratios - higher up is where the big flow comes.

I am particularly interested to see how the 8374 goes on the GTR...

 

I'm interested on the results of a 91-80 on a 2.4LR...........

 

So in looking at the compressor maps posted on BW's website, it looks like the 8374 compares favorably to a GT3582R - especially for what my application would be, which will be pushing about 30psi on a 2.0L. Obviously no idea how it would stack up to an HTA3585R, so it will be very interesting to start seeing some Evo dyno charts for the 8374, particularly 2.0 setups.

Also, looks like a bunch of the compressor map PDFs on BW's website are corrupt. Hopefully they'll get that fixed soon.

l8r)

 

What?

That 83mm EFR wheel flow 79 pounds/min. As far as specs go, that DOMINATES a GT3582R/HTA3582R AND beats out the HTA3586R.

The 76mm EFR wheel would probably be a fair comparison to a GT3582R.

76vs76, the EFR beats out the FP HTA3076R by almost 10 pounds/min... The EFR 70mm likely compares pretty well to the HTA3076R.

Flat out, for a given exducer diameter, these wheels are looking very impressive.


Just a quick comparison based on manufacturer claims/compressor flow maps.

 

That is true, but since I'm looking to limit my application (road racing) to about 30psi, the topend isn't as critical as the spoolup. I'm trying to find a setup that will comfortably hold 30psi to about 8000 RPM and is able to spool to said 30 psi by 4000 RPM on a 2.0L. In looking at the 76 and 83 series, that goal seems to (of course) fall right between the two. It looks like the 76 would accommodate the spoolup, but may fall slightly short on the topend, whereas the 83 will easily do the topend, but probably spool slightly slower. So, once again, for results I wait.

l8r)

 

The compressor maps look nice (especially at higher PRs), but that doesn't mean much if the turbine side is the limiting factor, and that is my main focus. Where the EFR turbos are concerned, the turbines appear to provide increased efficiency vs. the (approximate) equivalent sized Garrett GT parts, and offer the added benefit of a 50% equivalent mass reduction as compared to inconel.

Going from a standard EVO VIII turbo with inconel turbine and 9.8 cm/2 turbine housing, to the same turbo (TME) with TiAl turbine and 10.5 cm/2 turbine housing resulted in significantly faster transient response and better spool characteristics, despite the larger turbine housing. If one can fabricate a turbo with a compressor of at least the capability of an HTA3586, but with a turbine that enables it to outspool an HTA3582, then you have a winner where outright performance is concerned. The only remaining variable to be considered at that point (aide from fitment) is the cost difference.

 

I don't know if anyone else is noticing but these are FORGED billet compressor wheels...not just billet compressor wheels.

I think the 7670 should be a great contender(not quite capable, but close) against the GT3582R for power and better than the GT3071R in spool/response. One of those...eating cake and having it too kind of deals. I really like those.

 

We need more pricing and dyno info! Looks very very promising, but need more input.

 

Geoff better be tied up to a bed with a gag in his mouth to keep us in suspense like this.

 

http://www.motoiq.com/magazine_artic...ature-set.aspx

Regards,

Kurt