Twin Turbo GSX.

To all tuners in the northern cali area. I have a twin turbo set up that I need help with. I need a shop and some expert advice. Thanks.

Do you have any more info on your project? I'm skeptical of the benefits, but it sounds unique and it would be interesting to see pics. Have any?

ya a TT Eclipse GSX would be dope to see sum engine pics
also whats the problem, maybe we all kan offer some suggestions on how to fix the troubles

ya a TT Eclipse GSX would be dope to see sum engine pics
also whats the problem, maybe we all kan offer some suggestions on how to fix the troubles

Your english teacher would not be proud. :(

i second that... now on to the turbo set up! yes a twin turbo set up would be interesting on a GSX although, how are you planning on doin it, there are 2 ways that i have seen it done and one of the ways you would be better off sticking with one turbo, the other one works pretty good!

the one that works good is using the stock turbo to spool up a substantially larger turbo... although it can be dangerous!

the one that you wouldnt see much of a gain for compared to a larger turbo, is using the 1st and 4th exhaust port to one turbo and the 2nd and 3rd to another turbo! yes it would look cool but it will cost you a shit more to do the twin set up and you will still see the same results if you would spend less money on one large turbo!

anyways... good luck with it and post some pics when its done... oh and let us know the progress, and dont be afraid to ask if you have problems!

Jake

Thanks guys. I realize the difficulty in this project but I already have the manifolds, turbos, and downpipes set up. If this works I plan to upgrade the turbos to a big t28 and a larger turbo to pick up were the t28 left off. Thanks.

All I have to say is good luck, you are a tru pioneer, and get some pics

If anyone is interested I loaded a pic of the set up somewhere on the site. I think it's in the image gallery. Later.

looks interesting... here i loaded the pic here so people dont have to go and find it! it should be a fun project and i am interested in seeing how it turns out... keep us posted!

http://files.automotiveforums.com/gallery/watermark.php?file=/503/156475twinT-251.jpg

Thanks Braa!

Wow. All I can say is that looks like a very cool concept. We will anxiously await results! Do you have a built engine already, because it seems that if this setup works efficiently, you could be putting down some serious hp in the future! (especially if you upgrade the turbos past T28) Watch out Shep :lol:!!!

Quote Revan: [Thanks Braa!]

I dint know Jake (Eclipserst) wore a bra :nono: :rofl:

me a newbie... lol :D

i thought paul walker said BRO... not BRA lol.. i might be wrong

whoa...holy shit...i want that thing in my car...damn...How many horses are you estimating it'll be when you have all the mods in that 4g63 engine? whooo...im guessin around the 450+ HP area...damn...thats nice

Just keep in mind that twin turbos are not done for more power, but for more power without increasing lag. And on a 4 banger you have very little leverage in the lag department with twin turbo, since only two half liter cylinders is feeding each one anyway. Even a t25 wont spool very quick on just two half liter cylinders :) A single turbo will make more power than 2 t25/28s, etc. I'm not sure the extra complication is worth it. People have done this in the past, and its always for sale on ebay at some point ;) But its good to see people actually doing things, not just talking about them... So I give credit for that. I just wish that more people that try this would post the results for power and lag.

Just keep in mind that twin turbos are not done for more power, but for more power without increasing lag. And on a 4 banger you have very little leverage in the lag department with twin turbo, since only two half liter cylinders is feeding each one anyway. Even a t25 wont spool very quick on just two half liter cylinders :) A single turbo will make more power than 2 t25/28s, etc. I'm not sure the extra complication is worth it. People have done this in the past, and its always for sale on ebay at some point ;) But its good to see people actually doing things, not just talking about them... So I give credit for that. I just wish that more people that try this would post the results for power and lag.


I've been talking to alot of tuners and they say the same thing but I'm planning to turn it into a sequention set up. A small turbo for the initial take off and a much larger one to kick in later. We've addressed air flow, heat, space, benifits, and downfalls. We may have come up with a solution for that.
Remember that no one has actuslly seen a twin turbo 4 banger, so all this is just speculation. Once we have it up and running we'll post the results and measure if it's even worth having. But it does look cool though.>>>>

Please keep us posted, this is very interesting. :)

The trouble with a sequential setup is you would need to drive both turbos with all 4 runners, not each turbo off two runners. Otherwise the load on the motor isnt balanced. The tough part then becomes how do you control the sequential action itself. The comp,icated system in the 3rd gen rx7 should give some insight to what is required. I have seen twin turbo 4 bangers, I believe all setup in parrelel, not sequential.

Either way, I like custom projects like this. Be sure to post updates on it :)

i was thinking about doing somthing like this for my GST... what i would do is use either a T25 or a 14b to spool up a much larger turbo such as a T4 or maybe somthing bigger! like in the GT range... what do you thing... would i see some major boost, i have seen this set up on and eclipse befor and the car went like hell and it sounded cool too not to mention the looks! but i was just looking for some input?

When you consider how much power people make on large but perfectly spoolable turbos, I just cant justify the added complication of a sequential system. But it would be a fun, challenging project just the same. I have been planning on building my own 3" throttlbody for that reason. The challenge. Plus the fact that there are ZERO good throttlebody options out there... Custom projects are a good time if you can justify the expense, especially if it doesnt work out in the end! :)