Twin Scroll Internal Gate Turbo Options

[ARTZ]

cheers Jas...

i know Stao has been making Highflow EVO turbos as well...maybe its an option

what about this?

http://shopping.kinugawaturbo.com/kinugawaturbohyundaigenesistd05h16g300ps-4-3-1-1.aspx

or

http://shopping.kinugawaturbo.com/kinugawaturbohyundaigenesistd05h16g300ps-4-3-1.aspx

whats the difference is between 10.5 and 11.5 trim I assume the 11.5 is a bigger exhaust housing.. looking at the reverse scroll of the evo housing itwould make for much more effective fitment

is turbine housing going to flow a 2.5lt though?

basically my old turbo with a twin scroll rear....lol

or this big huffer for the lols....

http://shopping.kinugawaturbo.com/kinugawa4turbochargergt3582withar117twinentrydividedt4housing600p.aspx

[scotty nm35]

Garret have a great range for the GT30's now, here are a few new external ones I saw recently... Do it Artz.

[zebra]

Twin scroll v-band would be cool

[ARTZ]

Garret have a great range for the GT30's now, here are a few new external ones I saw recently... Do it Artz.

yeah I saw those...this plus GTX turbos with twin 40mm gates could be good....getting pricey though and you know I'm a poor kent..

the evo turbo looks like my best option for what i want so far...

[GTScotT]

10.5T and 11.5T refer to the cm2 area of the turbine housing.

For reference a 12cm2 is roughly .82, so the 11.5 should be nice on your JZ with a healthy turbine.

The 10.5 is what is used OEM in evo's 5, 6, 8MR and 9. All other twin scroll models use a 9cm2 (9T)

[scotty nm35]

My emo7 had a 10.5, unless it had been changed at some stage? I doubt it, as the car was stock as a rock.

[GTScotT]

My emo7 had a 10.5, unless it had been changed at some stage? I doubt it, as the car was stock as a rock.

Had been changed.

Unless its an RS, then absolutely everything about the car was an option.

[GTScotT]

10.5T and 11.5T refer to the cm2 area of the turbine housing.

For reference a 12cm2 is roughly .82, so the 11.5 should be nice on your JZ with a healthy turbine.

The 10.5 is what is used OEM in evo's 5, 6, 8MR and 9. All other twin scroll models use a 9cm2 (9T) Evo 4s had a 9T while 7s and 8s a 9.8T

just need to fix my own post, realised i had a memory lapse.

[discopotato03]

Evo 4 was the first one with the engine turned around and a reverse rotation twin scroll turbine housing , they used the smallest or 9 cm housing . 5 had from memory an optional 10.5 for the RS can't remember other variants . AFAIK 6s all used the 10.5cm housing even the TMEs with the smaller 15GK compressor wheel . The larger and heavier Cedia based 7and some 8s used a slightly smaller 9.8cm turbine house to get back some of the squirt the 4g63T lost with tightening emissions legislation in 2001 . From memory 8MRs had the 10.5 standard as did most 9s which all had inlet VCT to pull the bottom end up .

There are aftermarket 11.5 housings which works well on std turbos with exhaust upgrades . The 8s and 9 had a revised version of the 10.5cm turbine housing using a single flap and mirror imaged D shaped outlets like the TSIW EFR housings . The early ones had two holes and two flaps and most have probably cracked now anyway .

So the story goes the Evo turbos were the closest production turbos got to being a true competition unit especially the small comp wheel types for restricted rally engines anyway . Not exactly a TR30R but I don't think any other manufacturer got as close - for Grp A rally anyway .

One 7 I know of goes pretty well with an 11.5 housing on a bog stock turbo . On a 9 spec turbo with the larger comp housing and diffuser it should have gone better . The best overall was supposed to be the second series 9RS turbos with the Titanium Aluminide turbine and the super back or tulip shaped if you like magnesium compressor wheel . The early version had a flat backed comp wheel and these can lunch themselves if leaned on too hard .

The TiAL turbine is said to be boost limited and if you overdo it the wheel separates from the shaft destroying itself . These 9RS turbos are supposed to boost 3-500 revs sooner than a conventional 9 units and its possible the 11.5cm turbine housing puts that back near standard but with less exhaust restriction .

A .

[Sub Boy32]

Buy the EFR!

My 8374 .92a/r is the best engine part I've ever bought!

Fantastic response, great top end power, big torque curve.......and more response than the dyno plots show by far.

[cobrAA]

Buy the EFR!

My 8374 .92a/r is the best engine part I've ever bought!

Fantastic response, great top end power, big torque curve.......and more response than the dyno plots show by far.

have you fixed your boost creep issue with the internal wastegate ?

[zebra]

http://www.ebay.com.au/itm/Toyota-1JZ-non-VVTi-5858-cea-billet-precision-golebys-parts-manifold-Turbosmart-/121309669923?pt=AU_Car_Parts_Accessories&hash=item1c3e9eaa23&_uhb=1

[ARTZ]

http://www.ebay.com.au/itm/Toyota-1JZ-non-VVTi-5858-cea-billet-precision-golebys-parts-manifold-Turbosmart-/121309669923?pt=AU_Car_Parts_Accessories&hash=item1c3e9eaa23&_uhb=1

haha bolt on kit...nice!....still not twin scroll though and not sure i like the design of that manifold..def seems to work though..

anyway have found hiflow ct12s for around 1500, good for 300kws...so have given up on the twin scroll idea, still think it could work well though..

I'm just going to flog the stockies till they blow or I tire of them

[Tonba]

don't mess around with the Evo turbo chargers. It will simply choke your engine. The turbine housings are too small.

Just grab yourself an EFR turbocharger, and live with amazing boost response, and fantastic power.

[GTScotT]

I am digging that precision bolt on kit a LOT!!!

[scotty nm35]

Very reasonable price considering what you get in the kit.

[GTScotT]

I agree, there's barely a couple of hundred in it for the bloke MAKING the manifold.

[ARTZ]

Needs moar twin scroll and low mount turbo though...

that manifold is very basic..Its like an entry level kit for kids who want a top mount turbo....I had a way cooler manifold idea.

[scotty nm35]

I don't think you realise how little a true twin scroll actually improves response compared to a single Artz. Some think it is the same as simply running a smaller housing. I can't say I have tried one myself, but it's a lot of work for little gain...

There would be more response gain going to an EFR Ti wheel turbo imo.

[ARTZ]

yep.. so use the Efr turbo with twin scroll, its not going to be any worse is it....!

how could it not work... What about Owen...did the twin scroll gtx3076...you telling me that didn't work?..problem.with the smaller housing is you are sacrificing top end, while a twin scroll while you can have you cake and eat it too...

And making a twin scroll manifold is no harder than making the manifold in that eBay advert...it would just merge a little differently into a t3 or t4 twin flange instead of merging into single pipe

Its not alot of extra work at all..

Anyway dont worry, im not building it so you won't have to make me any whacky manifolds...was just an idea, I still think it's a good one