Rear mounted turbo?

[kingkilburn]

Check out this guy's Q45
http://forums.nicoclub.com/zerothread?id=219609&page=2
Scroll down to a post by qsiguy.

[hotlavaflow]

My turbos are low mounted (not rear mounted more like mid-mounted) and I had lag. I had to redesign the intercooler piping for better response. It worked out pretty nice. T28's off an R33 GTR. Originally they didn't really start spooling until about 3500rpm but with the X-pipe it starts at 2800rpm.




I know a guy running the rear mount on a V6 and there is a bit of lag.

[i need tires]

Originally Posted by kingkilburn

Check out this guy's Q45
http://forums.nicoclub.com/zerothread?id=219609&page=2
Scroll down to a post by qsiguy.

i like! very very nice set up!

[smokins14]

my buddy has one on his 350z. Lag is not an issue for him at all. I can't remember what website it's on, but when I remember I will post it up.

[allntrlundrgrnd]

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

[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?

[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

[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?

[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.

[azndoc]

I saw this kind of rear turbo set up on the speed channel before also.

Forgot what car it was.

But I wouldn't do it personally because of drifting and all the dirt drops that I do.

I'm pretty fine with the conventional set up.

[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

[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.

[steve shadows]

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

[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

[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

[Donesyboy]

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

[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.

[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

[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.

[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

[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)

[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.

[kingkilburn]

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

[yokotavia]

that q45 rear mount setup is hella clean.

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

[WERDdabuilder]

was delivering one day to this domestic performance shop and saw a camaro parked out front. looked at the rear and saw the turbo poking out.

[fliprayzin240sx]

The pipe actually acts as an intercooler. Ive seen somebody weld aluminum fins on the pipe to "catch" air and help keep the pipes cooler.

[Kn1ves]

http://www.chevyhiperformance.com/te...rbo/index.html

Don't know why the link hasn't been posted yet

The intake tube, which runs up the driver's side of the car, displaces an internal volume that closely matches most front-mounted turbo systems installed with intercoolers. In simpler terms, a large compressor (the turbo) fills a small volume (the intake tube) in about 0.05 seconds with the STS Turbo system, resulting in very minimal lag.