Updated - Twins almost here! - STS (Twin Turbo) Camaro SS

[benjj]

i can't wait to see some numbers and hopefully get some track vids to quiet some of the nay-sayers of the location

[dstairs]

Originally Posted by MyZb383

1 foot of water is not that uncommon here in Houston in a big rainstorm. Happens more often than you might think.

Yeah we live on top of a huge swamp

[5th Gen SS]

One of the great things about rear mount turbo setup is that you can use almost any variation of exhaust setup and doesn't affect the existing turbo setup. Stock exhaust, headers ( LT's or shorties ), h-pipe or xpipe, etc.. This setup for the SS is a front mount intercooler and the turbos are engine oil fed. If someone wanted to take off the kit ( but why ) then all you have to do is remove it from the car and reinstall your muffs. I am working on a design for a modified intake enclosure/repiping ( for this kit ) to alleviate any excessive water concerns wether it's tire spinoff or if you live in a floodprone area.

[manimsoblack]

Originally Posted by LS6-M22

Thats my friends car in the video on two guys garage!The car has no engine now as the motor sucked up a lot of water and cracked the block.And yes it was a very big puddle.People who live in Florida can understand how much rain can collect on the ground in such little time.

yup happened to me last month.

[Chocolate Apocalypse]

Originally Posted by 5th Gen SS

One of the great things about rear mount turbo setup is that you can use almost any variation of exhaust setup and doesn't affect the existing turbo setup. Stock exhaust, headers ( LT's or shorties )

You dont want LTs, shorties are fine but not LTs. You'll be killing some power and you'll just go back to stock manifolds or shorties anyway.

[ZZcamaro]

Originally Posted by Chocolate Apocalypse

You dont want LTs, shorties are fine but not LTs. You'll be killing some power and you'll just go back to stock manifolds or shorties anyway.

That is all based on the complete setup you have...depending on the turbo, the boost you are looking for, the diameter of the pipe....you can run LTs and it will work fine...just have to make sure you match everything properly.

[Chocolate Apocalypse]

Originally Posted by ZZcamaro

That is all based on the complete setup you have...depending on the turbo, the boost you are looking for, the diameter of the pipe....you can run LTs and it will work fine...just have to make sure you match everything properly.

Uhh, no. LTs are not the way to go with a rear mount turbo, no how, no way. Anyone who is thinking about going rear mount should really read through this, lots of good info:
http://www.ls1tech.com/forums/forced...urbo-saga.html

[Dinky Toy]

Originally Posted by east TX Muscle cars

Anyone who disputes the idea needs to know simply this, PRESSURE IS PRESSURE!

If you pressurize a tube 2 inches long versus 24 inches long it doesn't matter.

I have never owned a FI engine so I am no expert and you are free to call bullshit on my method of thinking if I am completely wrong, but...

"PRESSURE IS PRESSURE", that is true, but when talking turbo lag you are talking how quickly pressure is build up and that is a different story.

"If you pressurize a tube 2 inches long versus 24 inches long it doesn't matter.", that is true for fluids which are "non-compressable" but when talking about air which is compressable please consider that volume matters and a longer tube equals more volume.

At the end of the longer pipe is the turbo which is a restrictor (however marginal), therefore when pressing the throtle you will have the engine moving more exhaust air into the pipe towards the turbo.
Yes the turbo will start to spool faster instantly BUT since the turbo is a resrictor, the pressure in the longer tube in front of the turbo will build up and the extra volume of the pipe will require more energy and time to get to the full pressure the engine can generate and therefore the turbo to spool at the maximum RPM with that maximum pressure from the engine.

Something similar could be said for the extra length pipe back to the intake manifold since the engine is a restrictor too (hence the neccesity of a waste gate).

Now, whether the extra "turbo lag" from the longer tubes (both ways) creates noticable differences I will let someone else proof.
All other components kept the same, negatives of remote mount are probably offset by higher temperatures and need for intercooling when using under the hood turbo systems.

[Mindz]

This is what I've been waiting for. Another piece to my puzzle.

[Ninjak]

STS is a sound setup. The heat that turbo's can generate under hood is negated by the fact they are in the rear. I know a few Mustang guys running them, and they make good power and times on the single system.

The one thing I fault is that if you live in a rainy area...IE Florida.....Well...just do not drive thru any big puddles...

[1320junkie]

Originally Posted by kunkelz28

rear mount turbos, that will suck when they start on fire

huh?

[wacamaro]

1320junkie are you thinking what im thinking? Turbos catch on fire? there away from the engine there even cooler making them even less likely. Ive never even heard of that happening. Am i wrong please tell me!

[east TX Muscle cars]

Originally Posted by Dinky Toy

I have never owned a FI engine so I am no expert and you are free to call bullshit on my method of thinking if I am completely wrong, but...

"PRESSURE IS PRESSURE", that is true, but when talking turbo lag you are talking how quickly pressure is build up and that is a different story.

"If you pressurize a tube 2 inches long versus 24 inches long it doesn't matter.", that is true for fluids which are "non-compressable" but when talking about air which is compressable please consider that volume matters and a longer tube equals more volume.

At the end of the longer pipe is the turbo which is a restrictor (however marginal), therefore when pressing the throtle you will have the engine moving more exhaust air into the pipe towards the turbo.
Yes the turbo will start to spool faster instantly BUT since the turbo is a resrictor, the pressure in the longer tube in front of the turbo will build up and the extra volume of the pipe will require more energy and time to get to the full pressure the engine can generate and therefore the turbo to spool at the maximum RPM with that maximum pressure from the engine.

Something similar could be said for the extra length pipe back to the intake manifold since the engine is a restrictor too (hence the neccesity of a waste gate).

Now, whether the extra "turbo lag" from the longer tubes (both ways) creates noticable differences I will let someone else proof.
All other components kept the same, negatives of remote mount are probably offset by higher temperatures and need for intercooling when using under the hood turbo systems.

It is a very valid point. Volume is most definately a factor when properly setting up a remote mount system. A lot of time goes into selecting the tubing sizes and turbo sizes. You have to take into account velocity of exhaust and the velocity of air from the turbos. Then there are the temperatures of the air returning to the intake and so on. I can assure you that when Rick (sts turbo systems) engineers a system he does all the math for it before just throwing it on a car.

[Cheshirelaugh]

Originally Posted by kunkelz28

rear mount turbos, that will suck when they start on fire

If your turbos are on fire does it really matter where they're located?
I mean... it seems like kind of a big deal regardless.

/sarcasm