Turbo Choice - 2 Litre Straight Six - Non Nissan

[discopotato03]

Only thing I can think of and it could be a tad laggy is the new GTX3067R in a 0.63 AR T3 flanged GT30 housing .

It seems the want to make boost down low , often too low , means using modest sized turbine housings and turbines - and then the higher exhaust gas speed makes it reluctant to turn the sharp 90 degree angle to vent through your typical integral wastegates hole .

I mentioned GTX3067R because its the smallest compressor option Garrett make with a BB GT30 turbine and housing . 0.63 is the smallest turbine housing they do but the combination flows better exhaust wise than say a GTRS (GT2871R in a HKS 0.64AR T3 flanged turbine housing) .

Two litre sixes are hard because compared to the same capacity four they're are only getting 17% of their capacity firing every power pulse rather than 25% . It's not hard to see why Toyota Subaru and Mazda at times tried sequential twin turbos to make boost over a wider rev range .

[eightsixboy]

Its funny though because even the stock twins are quite laggy, doesn't make 14psi till almost 3,700rpm, my old r32 that had a highflow of the stock turbo made 21psi at around 4,300 or so if memory serves me correctly, and made over 230rwkw. if I could achieve similar with the 1G I would be happy.

[eightsixboy]

Before I bite the bullet and buy the td05 16g is there any restriction going to this style v-band setup?

http://www.ebay.com.au/itm/Kinugawa-Turbocharger-3-Anti-Surge-TD05H-16G-w-T3-8cm-V-Band-Internal-Gate-Hsg-/281161079416?pt=AU_Car_Parts_Accessories&hash=item4176819a78

It looks very awkward for the waste gate gases to have to pass through.

[hypergear]

That design does creep boost. I've had few people came with it for the internal wastegate machining and porting. The whole wastegate assembly needs to be changed and with the gate ported open. Then weld shut the closure.

Or you can use this, ATR28G2 with FNT .64 turbine housing, which has 38mm internal gate as standard.

And of course better power and more response compare to the TD05 16G, also cheaper in price.:

[Lithium]

Before I bite the bullet and buy the td05 16g is there any restriction going to this style v-band setup?

http://www.ebay.com.au/itm/Kinugawa-Turbocharger-3-Anti-Surge-TD05H-16G-w-T3-8cm-V-Band-Internal-Gate-Hsg-/281161079416?pt=AU_Car_Parts_Accessories&hash=item4176819a78

It looks very awkward for the waste gate gases to have to pass through.

Yeah as mentioned earlier, a bit of porting was needed as there was boost creep - wasn't rocket science, basically just grinding the metal away from the port from the outlet side until it is nearly as large as the flapper (which is big enough, nothing needs to be changed there) and maybe smoothing it out a little bit, my mate just did it himself with a die grinder. We did a bunch of comparison and the only turbo I've seen capable of the same power and spools better on an SR20 (basically all we have to compare with) was a Power Enterprise PE1420 which is rated to a fair bit less power and is really quite expensive - we had expected it to be a bit laggier than a stock T28BB but it actually spooled better!

[eightsixboy]

That design does creep boost. I've had few people came with it for the internal wastegate machining and porting. The whole wastegate assembly needs to be changed and with the gate ported open. Then weld shut the closure.

Or you can use this, ATR28G2 with FNT .64 turbine housing, which has 38mm internal gate as standard.

And of course better power and more response compare to the TD05 16G, also cheaper in price.:

Is that extra or do they all come with that?

[hypergear]

38mm internal gate is standard for all internally gated turbochargers built.

[Soundboyracer]

Hx45