Rear mounted turbo?

[Addicted2Kouki]

Anyone ever try a rear mounted turbo?
I know domestic v8 guys do it.



I would imagine more lag for our cars
...but does anyone have any info on it?

[e1_griego]

Considering all the conventionally mounted turbo options, there doesn't seem to be much point for an s-chassis. I'd be concerned driving around a low s13 with turbo shit hanging out by the ground, anyway haha.

Alex

[lob@ller]

Originally Posted by e1_griego

Considering all the conventionally mounted turbo options, there doesn't seem to be much point for an s-chassis. I'd be concerned driving around a low s13 with turbo shit hanging out by the ground, anyway haha.

Alex

I think this is true. However, I am good friends with Brent Grigsby who owned the blue GTO about half way down on this page... http://www.ststurbo.com/fast_customers
That car was SICK. I remember him telling me that he rolled up on two guys that were racing each other, 1 in a supra, and the other on some insane bike, and he passed both of them before they knew what was happening. LOL

[jrmiller84]

God forbid you drive the car through a deep puddle of water during a rainstorm considering where the intake is located...

[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?

[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

[Addicted2Kouki]

I would imagine the only benefit is keeping the engine bay looking stock.
that and maybe the fact that sometimes you dont even need an intercooler.

but its flaws probably would be trying to put together the piping and a slammed s-chassis.
or trying to locate a boost leak.
plus more pipes to fill = more lag.

[D1GP]

i believe since american cars have bigger motors, there is less room under the hood, and that is why they resort to the rear mount turbo.

would be stupid pointless for an s-chassis though. more lag and if you hit a puddle you're fucked.

[Kn1ves]

Theres supposedly no noticeable turbo lag from that set up even though theres a ton of piping. It wasn't some hack job.

Benefits would probably be, lower temp at the hood.. passing visual inspection...

Cons would be.. tons of additional piping/weight which can be countered by more power

actually since most of the piping is in the length of the car and not in the front, it wont be worse than an fmic

[Addicted2Kouki]

interesting points you make there.

[89singlecamnoob]

i remember seeing this done to a corvette on some Speed channel program...distributed the weight better (however minimal that might be), they didn't need an intercooler, and basically kept the engine bay less crowded. seems silly, and it certainly wouldn't work on some of your guys' cars...constantly worrying about scraping more than just aero on that speed bump

[Koopa Troopa]

It wouldn't be worth the effort on a 4 cylinder powered S chassis car. It's possible on V8's considering the exhaust flow of such engines. Your 1998cc motor isn't going to produce enough exhaust flow to spool that thing at a decent RPM..

Other than being cool there's really no reason to do it. Can you imagine trying to run 90mm intake piping through an S chasis?

Actually looking at that setup it seems like a cheap way for V8 guys to run a single turbo...

[Kn1ves]

Originally Posted by Koopa Troopa

It wouldn't be worth the effort on a 4 cylinder powered S chassis car. It's possible on V8's considering the exhaust flow of such engines. Your 1998cc motor isn't going to produce enough exhaust flow to spool that thing at a decent RPM..

Other than being cool there's really no reason to do it. Can you imagine trying to run 90mm intake piping through an S chasis?

Actually looking at that setup it seems like a cheap way for V8 guys to run a single turbo...

it is something to consider for the V8 240sx guys.. maybe even for the VQ

[ILoveJDM]

Originally Posted by Koopa Troopa

It wouldn't be worth the effort on a 4 cylinder powered S chassis car. It's possible on V8's considering the exhaust flow of such engines. Your 1998cc motor isn't going to produce enough exhaust flow to spool that thing at a decent RPM..

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

[i need tires]

Originally Posted by ILoveJDM

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

he is talking about a 2.0 or even a 2.4L engine wont be able to produce enough gases to spin a turbo that is 4ft away from the exhaust source compared to when the manifold is right up against the head.

[tknbkthrsdy4anfg]

Originally Posted by ILoveJDM

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

Yes you are, the turbo is located a few inches from the exhaust valve where the temperature is hot and the velocity is high. Not a few feet of exhaust piping where the exhaust charge has plenty of time to cool.
EDIT: i need tires beat me.

[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..

[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!

[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

[g6civcx]

Guys, this is STS Turbo territory: http://www.ststurbo.com/

They've invested a lot of money in this technology and hold several patents on it: http://www.ststurbo.com/patent

Patents are here if you're interested:

http://www.google.com/patents?id=bWU...J&dq=6,745,568
http://www.google.com/patents?id=bW5...J&dq=7,134,282


It's a good way to keep the engine bay clean. That's their whole rationale for designing this system.

If you're going to design your own system make sure you understand the extent of their patent coverage and don't infringe. STS is very aggressive with their patent enforcement.

[nevaland9]

heres a video of a Z with that kit..it sounds pretty crazy..the whole sleeper look gets thrown out of the window once you drive by someone.

[ame]http://www.youtube.com/watch?v=Z47z7OCHti8[/ame]

[McRussellPants]

total dildos.


STS still trys to pass off the super 60 as a sellable turbo so they can pretend to be "engineers" all they want.

[brndck]

the first article i read about sts, they were claiming that since the turbo is after the catalytic converter, that it would somehow be exempt from carb and therefore street legal. i lol'ed when i read that.

[bloodangels13]

Im all about the APS TT kits..... my dad wants to get the c6 vette kit or comaro kit and mod it to work with our 69 firebird when we drop in the ls6

[Risu2112]

I lol'ed

Visual inspection ALWAYS includes a through examination of your exhaust piping! Also yes more piping = more lag, any one that says otherwise has failed physics and should not be giving advice on the subject.

[UNISA JECS]

I'd be worried about something in the road hitting the turbo and the oil return since the turbo is only a gravity drain more less.

[i need tires]

wow i think im the only one that was thinking this... but how about dont SLAM your car if you have this type of set up lol

but i see a lot of these set ups on trucks, which is perfect cause ur engine bay isnt cluttered, no intercooler needed, and in most trucks u can run a huge ass turbo under there with no problems.

i like the rear mount set up. i would love to run it on my truck some day!

[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

[ripnbst]

These are better suited for people who are more into drag racing, seems lots of 240 people myself included are about response and overall street performance.