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Rear mount Turbo!

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Rear mount Turbo!
Old January 9th, 2005, 08:28 PM   #1
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Rear mount Turbo!

Anyone catch Two Guys garage this weekend? They installed a STS rear mount turbo kit on a Camaro SS, the car dynoed 269rwhp stock and 406rwhp with the turbo untuned. The kit looked pretty easy to install, did they get any further with the viper kit yet?
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Re: Rear mount Turbo!
Old January 9th, 2005, 10:18 PM   #2
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Re: Rear mount Turbo!

That rear turbo looked like a neat install, but it seemed to hang a bit low. I wonder if the intake air cools by the time it runs from the rear end to the engine?!!
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Re: Rear mount Turbo!
Old January 10th, 2005, 04:10 AM   #3
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Re: Rear mount Turbo!

At Bradenton, the Dallas Mustang procharged car that was running on Sat took the piping from the front of the motor all the way to the back of the passenger seat to hit the intercooler/aftercooler. Then these mondo 4" or 4.5" pipes came back UP to the front of the car into the motor. I forget how fast that thing was running but it _moved_. I wouldn't be surprised if the air moving to the back of the car cooled it down a little...

JD
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Re: Rear mount Turbo!
Old January 10th, 2005, 06:25 AM   #4
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Re: Rear mount Turbo!

fuelman has one on his camaro and im thinking of getting one for my ss truck
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Re: Rear mount Turbo!
Old January 10th, 2005, 07:49 AM   #5
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Re: Rear mount Turbo!

It is not the most efficent use of a turbo as you do not have the heat energy to help spool the turbo. This has been discussed before.
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Re: Rear mount Turbo!
Old January 10th, 2005, 08:18 AM   #6
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Re: Rear mount Turbo!

Quote:
Originally Posted by PRVT JET
Anyone catch Two Guys garage this weekend? They installed a STS rear mount turbo kit on a Camaro SS, the car dynoed 269rwhp stock and 406rwhp with the turbo untuned. The kit looked pretty easy to install, did they get any further with the viper kit yet?

I have been wondering what is the scoop with the TNT rear mount turbo. I called there when the original post was up and somebody there said they were dynoing the car.

I never heard anything but hearsay(no dyno sheets) about the power levels it made.

I remember calling again and they said they were closed due to reasons beyond their control and they would reopen shortly. I called like 3 weeks later and they still had the same message.

I called back at a later date and talked to somebpdy who told me they never made the 1030 RWHP somebody claimed on the board and that they still coundn't get it to act right.........

I am curious what IS the scoop? How is that car doing?
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Re: Rear mount Turbo!
Old January 10th, 2005, 08:37 AM   #7
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Re: Rear mount Turbo!

It might have some hope of working for a drag car, but as for street driving? Too much inertia loss to overcome.
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Re: Rear mount Turbo!
Old January 10th, 2005, 08:47 AM   #8
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Re: Rear mount Turbo!

The power increase is definitely there, I do think it will do better with bigger motors. They also had a chevy truck with over 500hp.
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Re: Rear mount Turbo!
Old January 10th, 2005, 08:49 AM   #9
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Re: Rear mount Turbo!

Here we go again.
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Re: Rear mount Turbo!
Old January 10th, 2005, 10:08 AM   #10
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Re: Rear mount Turbo!

For street driving I think it would be very drivable. The efficiencies of turbos are soooooooo good now that it "almost" doesn't matter where you locate a turbo. With a big cube motor (ala - viper) I don't think spool would be too much of an issue, and with an AEM a/f control is very capable of being done (obviously). As for people that say, you have to get that air from the turbo in back all the way to the motor, think about this....the 996 porsche 911 twin turbo's intercoolers are in the front of the car, so it must send the pressurized air from the turbos in back to the IC's in front and back to the motor, and they see full bosst by something like 2400rpm.
It sounds very feasable, now someone just has to do it (thats always how it goes though, huh)
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Re: Rear mount Turbo!
Old January 10th, 2005, 10:19 AM   #11
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Re: Rear mount Turbo!

I don't remember much about the rear mounted turbo.....but I think Smokin was a huge fan.
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Re: Rear mount Turbo!
Old January 10th, 2005, 11:30 AM   #12
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Re: Rear mount Turbo!

Quote:
Originally Posted by tom86zt
As for people that say, you have to get that air from the turbo in back all the way to the motor, think about this....the 996 porsche 911 twin turbo's intercoolers are in the front of the car, so it must send the pressurized air from the turbos in back to the IC's in front and back to the motor, and they see full bosst by something like 2400rpm.

Q: But where is the exhaust energy source (engine) on a 911?

A: In the back, where the turbos are.
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Re: Rear mount Turbo!
Old January 10th, 2005, 11:39 AM   #13
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Re: Rear mount Turbo!

The thing I don't like about the rear turbo setup is that you get your air from the back of the car. The dirtiest place to be sucking air from.
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Re: Rear mount Turbo!
Old January 10th, 2005, 12:01 PM   #14
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Re: Rear mount Turbo!

saw it. it might not be the most effective upgrade but for the COST to performance ratio, its a damn good upgrade.
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Re: Rear mount Turbo!
Old January 10th, 2005, 12:10 PM   #15
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Re: Rear mount Turbo!

I think a large single turbo is the way to go for max power. Will it fit in the front of a viper has yet to be seen. Nobody has done it yet. Anything is possible with enough: will, sweat and tools. I feel a large single turbo system comming in the next few years.

However, for a DIY'er, I think a rear mount would be hard to beat. The install is very simple compaired to many of the turbo/supercharger systems out there. I think a rear mount will endup being much like a roe supercharger. A great DIY project...just simply because it's easy to install and will make enough power for street use. Will it make more power then some of the current systems out there. I don't think it would. But if you can get a rear mount to make 850rwhp for 1/2 or 2/3's of the cost of a "standard" system that is out there, why not buy it if that's all you want. You can use that money you saved for other projects.

The great thing about vipers is because it's such a large engine. With 10-15psi boost you can make more then enough power for street use. 850rwhp...is all most people can handle without the car becoming a dyno queen.


There is a lot of agument out there about how well a rear mount turbo system works.

Will a large single in the rear make more power than two smaller turbos in the front?

Can the coolness of the intake temp make up the differance of the turbo being mounted in the ass of the car?

Only time will tell. Another thing to think about too is because the turbo is MUCH cooler will it last longer? I don't think it will get the typical heat induced failures of a reagular turbo system. You may not even want a turbo timmer.


The Q's are there...but who can answer them. I agree with CHAD....here we go again.
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Re: Rear mount Turbo!
Old January 10th, 2005, 12:14 PM   #16
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Re: Rear mount Turbo!

i like them and i do agree a single bigass turbo will be the ruler of the universe, until a bigger turbo comes along

as for power 850rwhp is more than enough to do the job of a strong nine second car, as long as the torque is up there and unlike superchargers, turbos have no problem making torque.
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Re: Rear mount Turbo!
Old January 10th, 2005, 12:46 PM   #17
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Re: Rear mount Turbo!

Quote:
Originally Posted by tom86zt
For street driving I think it would be very drivable. The efficiencies of turbos are soooooooo good now that it "almost" doesn't matter where you locate a turbo. With a big cube motor (ala - viper) I don't think spool would be too much of an issue, and with an AEM a/f control is very capable of being done (obviously). As for people that say, you have to get that air from the turbo in back all the way to the motor, think about this....the 996 porsche 911 twin turbo's intercoolers are in the front of the car, so it must send the pressurized air from the turbos in back to the IC's in front and back to the motor, and they see full bosst by something like 2400rpm.
It sounds very feasable, now someone just has to do it (thats always how it goes though, huh)
996's intercoolers are in the back of the car, those two opening on each side of the car on the fenders are for cooling to the intercoolers.
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Re: Rear mount Turbo!
Old January 10th, 2005, 02:06 PM   #18
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Re: Rear mount Turbo!

Quote:
Originally Posted by tom86zt
...the 996 porsche 911 twin turbo's intercoolers are in the front of the car, so it must send the pressurized air from the turbos in back to the IC's in front and back to the motor, and they see full bosst by something like 2400rpm.
It sounds very feasable, now someone just has to do it (thats always how it goes though, huh)

Dumbass, the 911 (993) Turbos a large intercoolers in the REAR over the engine. The 996 has intercoolers in the fenderwells in the REAR. Fuckin ignorant comments from jackasses talking about shit they dont know about. If you want to tell me that your brain is located in your ass, and that dogshit lodged snugly in your cranium, then you're onto something.
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Re: Rear mount Turbo!
Old January 10th, 2005, 04:19 PM   #19
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Re: Rear mount Turbo!

Quote:
Originally Posted by Smokin


Dumbass, the 911 (993) Turbos a large intercoolers in the REAR over the engine. The 996 has intercoolers in the fenderwells in the REAR. Fuckin ignorant comments from jackasses talking about shit they dont know about. If you want to tell me that your brain is located in your ass, and that dogshit lodged snugly in your cranium, then you're onto something.
God we have missed you...............

:thumb:
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Re: Rear mount Turbo!
Old January 10th, 2005, 04:27 PM   #20
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Re: Rear mount Turbo!

I've had several guys dyno their rear mount turbo F bodies at my shop and as far as I can tell they work just about as good as a nice head and cam combination. I also have a news flash for you guys, when it comes to the ultimate turbo systems, twins is the way to go, not a big single.
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