Rear mounted turbo?

[i need tires]

Originally Posted by allntrlundrgrnd

damn thats a wild setup, what kinda car? 240?

not a 240... looks at the suspension

looks to be a FWD car.. perhaps honda?

[Koopa Troopa]

Originally Posted by ILoveJDM

i must be missing something here, because isnt that how a normal turbo setup works anyways, spooled by exhaust gases..

Dude, my SR with stock exhaust ports makes my T300/T04S .84 A/R reach .5 bar at 4500 RPM's. I can only imagine what'd I'd be spooling at if that turbo were under my fuel tank..

[PRADOgy]

As crazy as it looks what i see is

the air being cooler by the time it reaches the turbo .. but also a hella lot more stress on the compressor.. like way more since back pressure.. idk its wierd.. i can see water fucking this up too getting into the compressor

[steve shadows]

Remeber those are V8s with 2-3 times the displacement.

[Koopa Troopa]

Originally Posted by PRADOgy

As crazy as it looks what i see is

the air being cooler by the time it reaches the turbo .. but also a hella lot more stress on the compressor.. like way more since back pressure.. idk its wierd.. i can see water fucking this up too getting into the compressor

You talking about exhaust gases cooling before it reaches the turbo? That'd be a bad thing because cooler gases carry less velocity which is why too big of an exhaust can be a bad thing.

[i need tires]

Originally Posted by Koopa Troopa

Dude, my SR with stock exhaust ports makes my T300/T04S .84 A/R reach .5 bar at 4500 RPM's. I can only imagine what'd I'd be spooling at if that turbo were under my fuel tank..

rear mount the HKS turbo Koopa!

[hotlavaflow]

Originally Posted by i need tires

not a 240... looks at the suspension

looks to be a FWD car.. perhaps honda?

Yeah it's an Acura Legend

[vvtisupra]

hey guys how about since there is so much piping you wouldn't need a large front mount, which means not much change in volume to fill meaning not that much if any turbo lag considering their engines are 3 times the size of ours.... and if you had cats and you're mounting it way back there its catback making it easier to be legalalized

[silnismo]

One of the dudes from freshalloy was in the process of a ka24dett rear mounted twin turbo setup. Its beens a while since he updated tho.

http://forums2.freshalloy.com/showth...light=ka24dett

[PRADOgy]

Originally Posted by vvtisupra

and if you had cats and you're mounting it way back there its catback making it easier to be legalalized

yes it is behind the cat but it doesnt go through the catalyst.. so....

[lazy240]

hey the powerblock did the twin turbo set up for a corvette they were building dont know who it was for i know it was on spike thats all i know

[tknbkthrsdy4anfg]

Originally Posted by hotlavaflow

Yeah it's an Acura Legend

Dude your car must be sky high to fit charge piping under it.
can you post a picture of your ground clearance?

[Donesyboy]

wow never seen that before
hmmm gives me ideas for my mr2 ahaha jk

[lazy240]

hey the powerblock did the twin turbo set up for a corvette they were building dont know who it was for i know it was on spike thats all i know

[Risu2112]

Originally Posted by vvtisupra

hey guys how about since there is so much piping you wouldn't need a large front mount, which means not much change in volume to fill meaning not that much if any turbo lag considering their engines are 3 times the size of ours.... and if you had cats and you're mounting it way back there its catback making it easier to be legalalized

No, absolutely not.. This will be as difficult to legalize as any other non factory turbo under the hood. Your logic of "Behind the cat" doesn't apply because I ASSUME the turbo is connected back up to the engine (and thusly before the cat) in order to cram that air into the cylinders.

Although I guess it wouldn't be illegal to mount a turbo charger after the cat that didn't reroute to the engine, that would be a fun set up to see! har har har

[fliprayzin240sx]

Originally Posted by vvtisupra

hey guys how about since there is so much piping you wouldn't need a large front mount, which means not much change in volume to fill meaning not that much if any turbo lag considering their engines are 3 times the size of ours.... and if you had cats and you're mounting it way back there its catback making it easier to be legalalized

My old co-worker in norcal has the STS kit on his WS6 Firebird. T-04E turbo iirc, made 480whp with the kit. When I left he was in the process of adding an aftercooler and going methanol injection to hit 600whp on stock everything.

THe only thing i hated about the setup was how low the pipe are that wraps under the damn rear axle. THeres this loop, that i shit you not, on his stock ride height was about 4 inches from getting ripped off. He was planning on fixing it but dont know if he got around to actually doing it. Also the other thing about it is the oil line and system for it. Since the turbo sits lower than the oil pan, you need a small oil pump to pump it back from the turbo.

[SW20Racer]

Originally Posted by Donesyboy

wow never seen that before
hmmm gives me ideas for my mr2 ahaha jk

it would actually work well on an mr2, just put the turbo/turbos where the huge muffler used to be and have stainless blastpipes coming straight off the turbo/turbos it would really help cut down on the horrible underhood temps you can achieve with an mr2.

[hotlavaflow]

Originally Posted by tknbkthrsdy4anfg

Dude your car must be sky high to fit charge piping under it.
can you post a picture of your ground clearance?

I don't have anything great on the harddrive but it's not jacked up like one of those downsouth cars. I had it dropped before but had to bring it back up to stock height since the twins. But stock height on an Acura provides less wheel gap than stock height on a Nissan so once I install some flares it'll look good to me again. This is the closest I have for right now. I'll take some better pics later.

[KrazyZenki]

Here is a rear mounted t4088 on a C5 Z06 that the shop that did my car did. One of the cleanest rear mounts I have ever seen. They have turboed alot of v8s in the traditional way and said they noticed no additional lag on this setup.

[Def]

Not a smart idea - turbos(turbines) derive power from exhaust pressure and HEAT.

It's an ok solution when your engine bay is tight and your other option is a centrifugal supercharger, but given that you can stuff a turbo as big nearly as big as your shortblock in the bay of an S chassis, I don't think it really applies to us.

[ByeByeSti]

for cars that they dont really offer many options for such as my 12v v6 audi a4 its a good option besides the fact of it getting wet, or bottoming out, amongst other factors. i loooked into it when i first got my audi and then i about slapped myself for almost dumping money into the pig... with the turbo being set so far back its just creating a rediculous amount of turbo lag, even for smaller turbos.. as others said, the set up should be used on v8's only or v6's with little options for power, and cost effective for the mos part

[kingkilburn]

Just make a cover for the turbo. No splashing and no impact.

I think this could be an option due to the ease of implementation. All the piping would be very straight forward. You could use whatever manifold you want.

I think my only worry would be getting my intake up and out of the way. Other than that it seems like cake.

Would there be room for it in that area under the rear seat?
(really just brain storming out loud, I'd rather swap in a JDM VH41)

[sldbyuramg]

Originally Posted by Ace Callaway

Jesus, I've never seen that in my life. I wonder if the power being produced is the same with a traditional turbo. BTW, does that have any benefit oppose to putting it in the front?

there is a camaro SS in SD that has a rear mounted turbo and one that also runs at the tracks...the SS that drives on the street makes huge power and claims there isnt any extra lag or loss on boost pressure. it sounds insane tho

[importdude]

i think its awesome, some guy over at hmt
did it for his q45
let me get pics





http://s78.photobucket.com/albums/j1...t=MVI_0090.flv

http://videos.streetfire.net/video/e...0c013a146a.htm

[vodka2]

Get a fuel cell. Stick a turbo in ur exhaust. Get a carbon fiber defuser so shit wont hit it. go drift.

[sldbyuramg]

Originally Posted by Def

Not a smart idea - turbos(turbines) derive power from exhaust pressure and HEAT.

It's an ok solution when your engine bay is tight and your other option is a centrifugal supercharger, but given that you can stuff a turbo as big nearly as big as your shortblock in the bay of an S chassis, I don't think it really applies to us.

turbos dont derive power from heat... they derive power from exhaust...and cold air. heat is the enemy of anything to do with cars. if you could somehow remove the heat from the exhaust it would in turn cool the air flowing into the intake and thus make more power. HEAT is definately not a source of power for a turbo

you are correct tho...it was designed for cars with a V shape motor...V6 & V8, who lack room for twin turbos or an extravigant exhaust manifold setup for a single turbo... so it doest apply. you can do it but it would be pointless

[kingkilburn]

As long as you don't lose velocity the turbo doesn't care how fare it is from the engine.

[kognition]

Wouldn't all that piping degrade the boost? All the cold rushing air cooling the pipes and lowering the boost pressure somewhat?

[sldbyuramg]

Originally Posted by kognition

Wouldn't all that piping degrade the boost? All the cold rushing air cooling the pipes and lowering the boost pressure somewhat?

as i have read and heard from a couple domestic tuners it doesnt degrade boost at all. strange stuff

[yokotavia]

that q45 rear mount setup is hella clean.

and yeah...ground clearance would definatly be an issue for me. haha