Eclipse GSX Twinturbo (comments are welcome)

[Iceman67]

The engine of my car is at Ferrari Garage for full upgrade, the mechanic work in my engine he want install the two turbo that Ferrari F40 use he make Exhaust Manifold and all is necessary, one turbo for two pistons.
What do you think about this turbo system?

 

[suicidal2af]

That setup is not good. Even when rx-7 tt and supra tt upgrade, they upgrade from 2 turbos to 1 turbo (for drag racing at least). There is no benefit to putting both turbos on one exhaust manifold, its more work and less effective than a cheaper single turbo setup.

They upgrade to singles for one reason:

It's cheaper.

Look to the HKS supra for a well-done twin....it's the fastest Supra in the world.

 

[timloomis]

id just go with a single.shepard and rau are both sub 8s in the quarter with one turbo.i think they wouldve already had 2 if it was better,since they are race cars.theres no point performance wise to have 2 turbos on a dsm,besides show.

 

[tim4g63fast]

so im probabley not suppost to do this. but im guessing this is something like what the setup is going to look like. hmmmmmm, how many alternatior do you feel like going through. anyways it would be one hell of a setup for one to work on.

http://img31.imageshack.us/img31/4849/4G63-1.jpg

so the only reason anyone switches to singal turbo setups is to save money.

hmmmm, didnt signal auto switch ther r34 to single turbo. almost every other huge corporation runs single turbo set ups to.

I really dont think that money is a factor for someone like titan motersports or something.

ya twin turbo sux

 

[rocketjr]

You may want to think about this. Part of my joy is knowing my car and what makes it tick. With this being said, I had a friend that was trying this on an RX-7 and it was nothing but trouble. Tuning is absolutely nerve racking. Two turbos won't spool the same or supply consistant pressures. Part of the reason for Ferrari's price tag is the engineering and the second price tag is taking it to their shop for tuning and repairs. It won't be easy for you to maintain without your friend. My friend ditched the twin turbo idea after 3 months of head aches and loads of cash. I have a 2.4 with an AMS GT35 turbo and it spools great right around 3,000 rpm's. And when it spools, OH BABY, 20lbs and a kick in the a$$, its GR_R_R-eat as Tony the tiger would say. Sorry I was so long winded and that's my $.02..

 

[selmerguy]

being in the army i have seen some monster motor setups. (twin v8 quad turbo :eek) I have seen motors with pistons the size of my head.) do it! see what happens. tell us all about it. send pic's and time slips. Maybe even a video. anything can work.

 

[99gst_racer]

With this being said, I had a friend that was trying this on an RX-7 and it was nothing but trouble. Tuning is absolutely nerve racking. Two turbos won't spool the same or supply consistant pressures.

An RX7's turbos are not supposed to spool the same or supply consistant pressures. They are set-up sequentially.

 

[JST2FST]

The 3rd gen RX7 is a twin turbo and it is basically a 2 cylinder.

I dont know if I would call the RX-7 "basically a 2 cylinder". Its a 1.3 liter that puts out power equal to a 2.6 liter. If you would really try and compare the rotary engine to any type it would have to be a 6 cylinder. Thats why any time you see a RX-7 in a drag race it is in the same class as the Supra, 300ZX, and other 6 cylinder cars.

With this being said, I had a friend that was trying this on an RX-7 and it was nothing but trouble. Tuning is absolutely nerve racking. Two turbos won't spool the same or supply consistant pressures.

I hope you friend was trying to make his 2nd gen a twin turbo because if he had a 3rd gen he really needs to learn more about his car. I have talked to a bunch of people who are running 11's on twins and they seem to have no problem tuning them

An RX7's turbos are not supposed to spool the same or supply consistant pressures. They are set-up sequentially.

very true

 

[99gst_racer]

I dont know if I would call the RX-7 "basically a 2 cylinder". Its a 1.3 liter that puts out power equal to a 2.6 liter. If you would really try and compare the rotary engine to any type it would have to be a 6 cylinder. Thats why any time you see a RX-7 in a drag race it is in the same class as the Supra, 300ZX, and other 6 cylinder cars.

By no means was I demeaning the power of the RX7 by calling it a 2 cylinder. Other than the DSM, the 3rd gen RX7 is one of the vehicles that I know best. On a V8, there are eight combustion chambers (cylinders), on a V6 there are six, and a 4-banger has four. A rotary RX7 has 2 rotors, hence only 2 combustion chambers. They don't have cylinders, so it's not a true 2-cylinder. It has, 2 rotors, 2 combustion chambers, 2 exhaust ports coming out of the rotor housing, and 2 runners on the ex. manifold. Thats why it's very comparable to a 2 cylinder; that term has nothing to do with it's power output.

 

[JST2FST]

By no means was I demeaning the power of the RX7 by calling it a 2 cylinder. Other than the DSM, the 3rd gen RX7 is one of the vehicles that I know best. On a V8, there are eight combustion chambers (cylinders), on a V6 there are six, and a 4-banger has four. A rotary RX7 has 2 rotors, hence only 2 combustion chambers. They don't have cylinders, so it's not a true 2-cylinder. It has, 2 rotors, 2 combustion chambers, 2 exhaust ports coming out of the rotor housing, and 2 runners on the ex. manifold. Thats why it's very comparable to a 2 cylinder; that term has nothing to do with it's power output.

Ohhh ok, I was thinking you were saying it was a "2 cylinder" because of the size, thats why i made the 1.3 puts out power equal to 2.6 comment. Had I known thats what you ment I would have done nothing but give you a big

 

[RedTurboEclipse]

no on twins, just get a big single

sounding like supra owners here

 

[TUI2I30]

Saying "I have twin turbos" sounds really cool. But the reality is that a single turbo has time and time again been able to get the job done quite well. I would personally rather have a single big turbo than 2 smaller turbos!

on the other hand. if I had 2 14b turbos laying around, some free time, and no cash to buy the turbo I want. well, then I might just have to break out the welder and try to make something work.

also, I have seen pictures of this done once before a while back.

my 2¢, take it for what it is worth.

 

[hereitcomes]

sounds like that's going to blow up twice as fast. I think majority rule is good here.

 

[eclipsegsx1736]

Ive personally seen the engine bay of a modded Ferrari F40, it had 4 huge air filters on it, so I looked for the turbo expecting a monster. Well, the T25 would give the F40 turbos a run for its money, at least as far as size goes. Theyre friggin small. Also the intake piping was tiny too. But the exhaust piping was all of 2 feet, and was just a straight pipe out the back. The wastegate was really big though. Its hard to tell from the pic but you get the idea.

 

[PieEyedPiper]

you'd think having the intercoolers in such close proximity to the block..and away from fresh air that it would cause...well problems.

 

[wannabeedsm]

i say go for it, its different and it sounds like the cars your project car.
i mean it also sounds like u have the funds to back the project so if it dont work out, oh well, atleast u attempt it. and if it does then u might be the first to do it and may even be able to showcase it.

basically if u have the funds to do it do it, if not and thats the car u rely on, then no.
but headache comes with anything new u try. im pretty sure he knows when slapping an entirely different set up on the car he's gona have to do a lot to get it working right

 

[fatafall]

Maybe you should talk to Fourdoor on the EVOtuners site. He seems to be one step ahead of you... check this out

 

[eclipsegsx1736]

you'd think having the intercoolers in such close proximity to the block..and away from fresh air that it would cause...well problems.

Yeah, maybe when youre cruising slowly then punch it. It has several HUGE air intake scoops on the rear glass hatch that feed right to the I/C's. But yeah still major heatsoak. Its probably running so little boost it doesnt affect it that badly. But I really dont know.

 

[redturbo66]

I say go for it!!! You'll be the only one with a twin eclipse and there'll always be ways to get faster. Besides, I think Ferrari badges would look pretty nice on a 2g.

 

[Defiant]

Maybe you should talk to Fourdoor on the EVOtuners site. He seems to be one step ahead of you... check this out

That sure looks for all the world like the one from here:
http://www.dsmtuners.com/forums/showthread.php?t=110396
Down to the smudges on the turbo. And, still no monkeys.

 

[fatafall]

Yeah, that looks to be the exact same setup. I just thought Id share the pic Fourdoor had on EVOtuners. What do you mean 'still no monkeys?'

Edit* - I understand the monkey thing, I had to read more of your posts in the other thread.

 

[BergayaJS]

Well the whole idea of tt is so that it decreases spool time so it's better for anything other than draggin.

But since money isn't a problem to you, why not just use antilag and throw away a turbo everytime it blows? my .02

But then again I would love to see this work out! So go ahead!

 

[suicidal2af]

so im probabley not suppost to do this. but im guessing this is something like what the setup is going to look like. hmmmmmm, how many alternatior do you feel like going through. anyways it would be one hell of a setup for one to work on.

http://img31.imageshack.us/img31/4849/4G63-1.jpg

so the only reason anyone switches to singal turbo setups is to save money.

hmmmm, didnt signal auto switch ther r34 to single turbo. almost every other huge corporation runs single turbo set ups to.

I really dont think that money is a factor for someone like titan motersports or something.

ya twin turbo sux

More like single sucks.

They do it because it's cheap. All of those cars you mentioned *only* run straight-lines. They can get the same results for less money.

However, run any of them against the HKS Supra(which can run times similiar to the Titan motorsports supra in drag) on an autox or road course, and it will absolutely terrorize them. They will stand no chance, because by the time they hit boost they will be back off of the accelerator for a turn.

Singles can make big power with lots of lag in a straight line. That doesn't equate to a usable torque curve.

 

[99gst_racer]

More like single sucks. Singles can make big power with lots of lag in a straight line. That doesn't equate to a usable torque curve.

Most of them make up for lag with nitrous.

Well the whole idea of tt is so that it decreases spool time so it's better for anything other than draggin.

Explain how slow spool is bad for drag racing..... Take a look at all the 7-sec 4 and 6 cylinders that are powered by one huge, single turbo - When do you think they hit full spool? When do you think Shep hits full spool? My car spools slower with my 50-trim as apposed to my 14b; which one do you think makes my car go faster?

 

[superflip506]

Maybe you should talk to Fourdoor on the EVOtuners site. He seems to be one step ahead of you... check this out

there was a twin turbo set up for sale on another forum i am on but for a evo. it uses twin evo 8 16g's. well here is what he posted. there was pics but they are down now.

FS: Twin Evo8 16g turbo kit for a Evo8. Hits 20psi by 4Krpm. Will bolt onto any Evo8, but AC condenser has to be removed to make room for 2nd turbo. The only problem is that these turbo's surged above 23psi, but this could be cured with a surge tank, or possibly an aftermarket intake manifold. The car went 11.8 at 117mph at 20psi on a blown clutch at the AMS Midwest Mayhem event.

 

[DSM90AWD]

One of these days someone is actually going to do this
[edit: Doug Derby did this back in '99, but does not offer it on his site ]

FS: Twin Evo8 16g turbo kit for a Evo8. Hits 20psi by 4Krpm.... The car went 11.8 at 117mph at 20psi on a blown clutch at the AMS Midwest Mayhem event

Looking at EVO DSM Times there are a dozen or so EVOs with better times on a stock 16G, so doesnt' seem like a real good sell to me.

My .02, if you want to be unique and be the center of attention at DSM meets, two turbos would definitely be the expensive ticket. But if you endup being slower than a single turbo setup that's half the cost, well, I hope you have thick skin for all the "I told you sos"