bigmikespec

Still for sale and price drop to $12,990!!!!!

Why would they surge dont all models have surge slots in the comp housing?

R34 GTR Getrag 6 speed will hold that power no worries; hence why I picked one up.

Yeah... best let a professional like Brad make it for you! Having seen his work in person it is second to none.

Go LS1 or LS2 coils; you can ditch the ignitor as well! If you have half an idea on wiring you will be fine. If you want a bracket to mount them PM me, I did a nice aluminium one.

So who is doing the head work then? You or GT Auto?

Sorry but I am probably not going to buy them but those wastegates sound pretty amazing. Do you have a spare IHI RX8 turbo to go with one of the wastegates? Good luck with sale!

No I don't buddy sorry

Might not be; looks like material has been added between the valves like a bridge.

The shape of that chamber is interesting; have the chambers been welded and reshaped? There is one feature in that chamber that gives a hint. Looks very different to this: http://www.nagtroc.org/forums/index.php?showtopic=41869

PM me if you like for the sake of keeping this thread on topic.

Updates?

Talk to Doug at NPC he is very helpful.

Yes the ALSD does weigh a s**tload more Noel... I would turf it and replace with a mech. rear diff from a R33 or R32.

No it is not... you are not thinking hard enough.

All sold to me! Thanks Matt Great to deal with and nice guy.

It does not explain it. It seems like just an extra feature and personally I think it makes the turbocharger look ugly... I know that should not matter and it generally does not with me; but it is ugly! There cannot be much of a performance gain (if any) besides the position of the port on the compressor housing is situated 90° to the flow which is not a good place to have it. The best thing I like about these turbos is the wheels and the housings. I do not see the upgrade to ball bearings and the BOV adding much value at all other than cost. If they were available with the older journal bearing type with the new wheels and housings and no poofy BOV on the comp. housing it would be a nice "in-between".

Can you explain this please?

Come on don't be so naive, you believe everything a salesmen tells you? Nothing wrong with doing research and being a bit of a skeptic before you choose a product, especially something that will define your car. That does sound pretty good. Which EFR is it using? Any more results?

I skimmed over the first paragraph then disregarded it considering it was written by Borg Warner. Show me a study undertaken by an expert not a sales pitch. @TheKeeper. I agree that you would not leave it out if there was a no expense spared build... but I want to talk about cost because I brought it up For the weekend warrier (not the hard core endurance racer) the extra $$$ might be better spent elsewhere; if I was chasing tenths of a second I would think of everything else I could that would cost a lot less instead of a turbo change. Bringing it back to the EFR range some what. Can you run antilag with these turbos; will they take a bit more punishment in that regard? What happens with warranty if you do?

But do they really? And if so... by how much a lap? A long race is a different story (i.e. multiple laps) and is not really applicable to a lot of people on here. I guess I am probing as to why the move to ball bearing. Market driven or significant performance improvement (for the weekend warrier) that justifies the extra $1k price tag, which let's not forget is the price of an Airwerks in itself.

Did not mean to misquote but I am glad it got your attention! I am dubious about the S200SX because of this result: http://www.gtr.co.uk/forum/121247-borg-warner-s200-bad-result.html It might be just one that is not set up correctly... I do not mean to nit-pick but just playing devils advocate here. So from what you said bearing type has no effect when already on boost; if you have a well set up package (diff, gearbox, engine, mapping, etc) you should not be off boost anyway in a time attack scenario. What is the considerable difference between non-BB and BB in time attack?

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.

I shall sleep well tonight then