XS twin turbo kit [Archive] - Club NA-T Forums

eblick99

07-29-2006, 03:34 PM

is there any plan by XS to make a twin turbo manifold for the supra? hks style tt manifold would be great, ide like to have the added horsepower over stock twins but the same quick spool over a single. would those use xs t3/t4 turbos? how about a TT setup flanged for the GE head? that would take a distributorless setup to get the turbos to fit on a ge though.

98mkiv

07-30-2006, 09:44 AM

well, there are a some reasons not to. cost, complexity and the fact that the efficiency of todays newer turbos really is much better than it was 15 years ago when the ct12s were designed. That not withstanding, most people would love a twin setup, especially the NA crowd. It's possible.......

TRD4Life05

07-30-2006, 05:35 PM

I think the NA to twin turbo market is significantly smaller than the single. If you really want a twin set up your gonna have to look to a shop that is willing to do a custom job. Its just not worth it for a company to mass produce a twin set up. Whiteblazze recently got his hands on a twin setup that he plans to run when we finish my car. I think he picked it up off a guy from virginia. I know there are a few other TT kits floating around, just gotta look. I wouldnt expect a company to attempt to mass produce them for us NA-t guys though.

There is always swaping the head to a tt head and buying the HKS twin setup... haha..$$

eblick99

07-30-2006, 05:51 PM

even a kit just for teh gte would be great, the total cost of an hks twin setup is in the 10k range. doing a na-tt would be unique and pretty cool which is why ide be interested in it, but really not that justifiable like you say. would be easier just to swap a gte motor in and uprgrade the stock twins some.

Dramon

07-31-2006, 03:33 AM

the biggest problem with TT is...go figure....the distributor. Not really possible with that.

98mkiv

07-31-2006, 08:11 AM

2jzget

07-31-2006, 09:50 AM

the biggest problem with TT is...go figure....the distributor. Not really possible with that.
TT with the distributor
http://www.streetdynamics.com/b/2JZGEIM03.jpg

jzpower&associates

07-31-2006, 03:37 PM

its relatively easy to lose the dist.... MK3 cps and AEM ($2k) or E-Manage ultimate ($800).

More likely to setup a kit for the NA motor than the TT though, since there are so many more running around in the IS300/SC300/GS300/Supra NA..... I've got some irons in the fire right now, maybe when I get those set.....

-M

you mean, you can either buy the MK3 cps and AEM

or

you can just buy the E-manage Ultimate?

not all together or partially together...?

98mkiv

07-31-2006, 04:05 PM

you mean, you can either buy the MK3 cps and AEM

or

you can just buy the E-manage Ultimate?

not all together or partially together...?

its more involved:

to change you need:

MK3 CPS
coil pack ignition (from TT or VVTi GE wasted spark motor)

then add:
emanage ultimate with pressure sensor (might need inj adaptor #2 depending on your injectors) = $650 total for the emanage +$150 for a fields harness (to save your sanity)

or

AEM wtih Map sensor, IAT sensor, boost control solenoid and expect to pay about $1250 for a used one.

-M

eblick99

01-11-2007, 02:27 PM

just get a GTE and dont worry about getting aem/going DIS and making a TT style intake mani. you could buy two or three GTE motors for the cost of all that. I just did away with my NA-T to exchange for a GTE actually. make a TT kit for the GTE, dont bother with the GE, i think a GTE twin kit other than HKS would sell like mad. and twin T3's please! same size as the HKS N1's would be perfect for me.

foreverpsycotic

01-11-2007, 10:38 PM

twin t3s or t25s on a GE head would be hot, this way there is a balance of power and quick spool.

eblick99

01-11-2007, 10:58 PM

make it for the GTE first though :) otherwise il probably be buying an HKS twin kit. unless you have deffinate plans for making a GTE twin kit, then ill wait for yours.

Dramon

01-12-2007, 01:48 AM

You guys are missing the point though. Theres simply not enough room for a twin turbo setup with the distributor and after the added cost from that you just spent way more than you should have for x horsepower.

Though if you did make a twin turbo kit, instead of using the HKS design it'd probably be easier and cheaper to use a daveH log style manifold and instead of joining the two banks of 3, just put them into different turbos.

eblick99

01-12-2007, 03:22 PM

thats why i said forget a N/A twin kit just make one for the GTE. much more cost effecient and it will bolt right up, no worries. why make a log type mani when XS has the technology to make a full SS tube type manifold? just make sure its reinforced enough to hold up a T3 on 3 runners. GTE has twice the manifold bolts to support it anyways. if XS can crank out lots of turbo kits for 4 cylinders, it shouldnt be difficult at all to make two three cyl. mani's to use on our GTE's.

LyFeWoRx

01-12-2007, 04:11 PM

Ed, could you hit me up on AIM and let me know where you found your motor? I have been looking for a GTE for my SC400 for some time now. Hit me up. AIM: HPF Michael

Thanks bro, or send me a PM!

I agree on the twins though.

eblick99

01-12-2007, 04:53 PM

heres some ideas for a twin kit....

HKS twin kit...twin manis/twin wg's...best setup i would think
http://i26.photobucket.com/albums/c115/eblick99/HKStwinkit.jpg

also one i hadn't thought of, twins on a single mani, as done by greddy (rare mani i guess) using stock turbos. Ide want T3 or T4 flanges on this however. Nice that it uses a single WG. that might be reason this is rare though...not in production long becuase it sucked or something...I dunno. 1 WG may not control boost well enough. deffinately would not want to run stock twins either.
http://i26.photobucket.com/albums/c115/eblick99/Greddytwinmani.jpg

98mkiv

01-12-2007, 06:14 PM

I don't think those flanges are for stock turbos....

eblick99

01-12-2007, 06:25 PM

i assumed since they were three bolt. what turbos out there use that style flange? odd for greddy, since they use T3 or T4 type turbos. thats why i assumed. any thoughts or comments on this Mark? a GTE twin XS kit ever going to be in the works? if you used a 60mm or 50mm WG on a twin turbo single mani i think it would have adeqaute boost control without much creep...

98mkiv

01-12-2007, 09:35 PM

For a few reasons that would take a long time to explain, no. A set of small twins offers no significant increase in performance or spool VS new single higher tech turbo of larger size. The cost, complexity and weight make a twin kit unattractive. Now, that being said, I could make a twin SEQUENTIAL kit that would rock, though no one has done this yet. All the aftermarket twin kits are PARALLEL turbos (like stock twins in TTC mode). Very complex and very expensive.

Thanks,
Mark

eblick99

01-12-2007, 09:45 PM

ok we can all bury this now. :(

eblick99

01-25-2007, 02:56 PM

OBX TT mani. just thought ide add it since I had the others... :D $325 for this one....might get it, cut off the 7MGTE flange and weld a 2JZGTE flange on it. if the runners are the same width/size from eachother anyways. i like the highmount WG. easy access!

http://i26.photobucket.com/albums/c115/eblick99/obx2.jpg
http://i26.photobucket.com/albums/c115/eblick99/obx1.jpg

98mkiv

01-25-2007, 07:16 PM

I've had that same thought, but have not done it because the work involved and the fact that twins don't perform as well as a new single.

Now, that being said, if you could make a true sequential system (thing EGCV and EGBV) then you would be in business. The work involved is big and I don't have that kind of time to sink into that now.....

That setup there has some potential, but as a parallel twin. Doing sequentials on that would be a LOT more work.

eblick99

01-26-2007, 06:01 PM

sequential is one turbo feeding the second correct? engine exhaust to turbo 1 turbine inlet, and turbo 1 compressor outlet to turbo 2 intake, turbo 1 turbine out to turbo 2 turbine inlet, and turbo 2 compressor outlet to engine intake?

500 rwhp on twins is easily made. i would be going more for the look of twins/twin inlets than the slightly better performance from a single.

98mkiv

01-26-2007, 07:01 PM

sequential is how the stock twins run....

in a nutshell: the exhaust from all 6 cylinders is ported to only one turbo. This is accomplished by shutting off the exhaust housing (downpipe) of the second turbo. Then at a certain RPM/Load a reverse wastegate opens up on the second turbo, bleeding some flow thru it to prespool it. Then the valve in the downpipe of the second turbo opens up fully and both turbos share the flow of all 6 cylinders.

There is a reed valve in line between the compessor housings of the turbos so the pressure of one does not backdrive the other.

I have a schematic somewhere.... in color, I will try to post it sometime. It is a fairly complex system. Parallel twins are what are found on most V- Motors (3000GT, mustang, 300ZX TT) because doing sequential on those motors would be a plumbing problem.

eblick99

01-28-2007, 02:31 PM

oh ok. how about 1JZs? the twins on that are simultanious meaning they both share all 6 all the time?

98mkiv

01-28-2007, 08:21 PM

the 1JZ-GTE is the 2.5L predecessor/proto that proved out and turned into the 2JZ 3L TT motor we were lucky enough to get here in the US in the Supra, the only car in the US that had the 2JZ. JDM markets got the 2JZGTE in the aristo as well. Might have been others, not sure. 1J had the sequential twins.

85?

04-23-2007, 02:48 AM

I have founf some manifolds to run twins on 1jz with twin T25 turbos with internal WG. I think this is the easiest way to put twins on a 2jz aswell. You can look up the kit on Supramania, on a 1jz it made 480hp on 18psi on one Supra.