Rear Turbo Updates
08-17-2005, 06:50 PM
#17
Gluteus Maximus
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Originally Posted by m21sniper
The real advantadge should be in keeping underhood temps down. Way down. 
08-17-2005, 06:51 PM
#18
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The kit is comming along fine. They dicided to fix the car there using for a test mule. It was way down on power in stock form. The plan is to have it all back toghether with new numbers by Sharks in the Hood.
As to what has been wrong with the motor I dont know yet. It comes out of the car this weekend i think.
As to what has been wrong with the motor I dont know yet. It comes out of the car this weekend i think.
08-17-2005, 06:59 PM
#19
USMarine
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Originally Posted by sublimate
At least some of the reasons people are looking for a rear turbo:
1. A turbo seems more Porsche-like.
There's been a lot of foctory turbo Porsches (most of them rear turbos too
), but AFAIK not many supercharged ones.
2. Turbos are theoretically more efficient.
Although I doubt at reasonable boost pressures anyone would see a difference.
3. Supercharger seem a little crude.
Just a personal opinion partly due to #1 and #2 and partly due to the big superchargers sticking out of hoods on the drag cars I grew up around and also the multitudes of supercharged 5.0 Mustangs kids seem to be driving today
4. A rear turbo kit might be cheaper than a superchager.
Maybe. Depends on a lot of things.
5. A rear turbo kit might be more simple than a SC.
No complicated brackets or manifolds
6. Less mucking around with the stock parts would make it easier to go back to stock later.
At least in the engine compartment.
7. Less stress on the crank bearings due to SC belt tension.
I've never heard of anyone here having a problem, but I've always wondered.
1. A turbo seems more Porsche-like.
There's been a lot of foctory turbo Porsches (most of them rear turbos too
), but AFAIK not many supercharged ones.2. Turbos are theoretically more efficient.
Although I doubt at reasonable boost pressures anyone would see a difference.
3. Supercharger seem a little crude.
Just a personal opinion partly due to #1 and #2 and partly due to the big superchargers sticking out of hoods on the drag cars I grew up around and also the multitudes of supercharged 5.0 Mustangs kids seem to be driving today
4. A rear turbo kit might be cheaper than a superchager.
Maybe. Depends on a lot of things.
5. A rear turbo kit might be more simple than a SC.
No complicated brackets or manifolds
6. Less mucking around with the stock parts would make it easier to go back to stock later.
At least in the engine compartment.
7. Less stress on the crank bearings due to SC belt tension.
I've never heard of anyone here having a problem, but I've always wondered.
08-17-2005, 07:02 PM
#20
USMarine
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Originally Posted by goldknight
The kit is comming along fine. They dicided to fix the car there using for a test mule. It was way down on power in stock form. The plan is to have it all back toghether with new numbers by Sharks in the Hood.
As to what has been wrong with the motor I dont know yet. It comes out of the car this weekend i think.
As to what has been wrong with the motor I dont know yet. It comes out of the car this weekend i think.
Thurston, thanks for jumping in on this...of course I have been sworn to secrecy on this topic and could not publically make the statement that you did.
08-17-2005, 07:48 PM
#21
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Originally Posted by DoubleNutz
...of course I have been sworn to secrecy on this topic and could not publically make the statement that you did.
Joking of course, Adam said something about doing an article on this so I'll leave it up to the kit creators and "Wiser Men" then me to break this story. However I have been known to sit back in my leather recliner and watch the dyno runs over and over, to the exasperation of my wife.
08-17-2005, 09:43 PM
#23
Something is missing from Double's Signature. Like some power levels from his car. They USED to be there.
08-17-2005, 09:53 PM
#24
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The car is at me and Tom's shop. Actually the developers of the rear mounted turbo are now subleasing space from us. The car finally blew a head gasket after hitting the 400hp mark. Tom and I are going to be going through the motor and should have it back together in a couple of weeks. The owner of the car wants to have it ready for the Track Attack (Sept. 17th) so that is our target date. We will be putting stock head gaskets back in it, as the system is still under development as a kit to be installed on stock cars and the developers want to see how far they can reliably push the stock components.
08-17-2005, 09:55 PM
#25
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Originally Posted by m21sniper
"1. A turbo seems more Porsche-like."
ABSOLUTELY!
"2. ...PSI for PSI a turbo requires FAR less power to drive....
I love turbos.
ABSOLUTELY!
"2. ...PSI for PSI a turbo requires FAR less power to drive....
I love turbos.
I have nothing against superchargers... but given a choice, I will take a turbo any time, any place.
08-17-2005, 10:00 PM
#26
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i think the turbo charging is far more complicated than a supercharger and if mounted in the back is not gonna be as efficient as a standard, under the hood turbo charger. you're gonna have to get plumbing back up to the intake. where are you gonna rout that? right next to the exhaust? if then may need to be wrapped to keep the intake temps down. also, what about the intercooler? you're gonna have to plumb that up in the front somewhere for best results. supercharger is so much simpler imho especially when there are bolt on kits out there.
the absolute only advantage to sticking it in the rear that i can see (talking about turbos here) is to keep the temps down. however, i cannot see that benefit outweighing the costs of putting it back there.
the absolute only advantage to sticking it in the rear that i can see (talking about turbos here) is to keep the temps down. however, i cannot see that benefit outweighing the costs of putting it back there.
08-17-2005, 10:00 PM
#27
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Seen one dynoed so I would disagree. At this point the rear turbos aren't close to produciong the power of the SC's but we will see. The 'RMT's' will be simpler to install.
Originally Posted by jyoon
i think you're gonna be waiting a very long time for a bolt on rear mounted turbo kit. it's probably not profitable to develop a kit for the 928. i don't understand, is a supercharger just not enough power? why not get the supercharger and if the rear mount kit ever develops, which i doubt, then sell the supercharger? maybe the supercharger will be enough to satisfy you.
08-17-2005, 10:12 PM
#28
USMarine
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Originally Posted by atb
The car is at me and Tom's shop...
:Great to see that someone understands good grammar...but then again Adam you are an Attorney and good command of the English language is a must.
I am certain that would would have written by many of us less literate folks as- Tom and I's shop...
08-17-2005, 10:23 PM
#29
USMarine
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Originally Posted by Jim_H
Seen one dynoed so I would disagree. At this point the rear turbos aren't close to produciong the power of the SC's but we will see. The 'RMT's' will be simpler to install.
I am with you here Jim but it appears the problem with the horsepower that day was not the fault or limitation of the RMT but that of the car (according to Louie Ott's observation). The RMT fits well and is easy to install. Adam, Tom and Thurston seem to have a good grip on rolling the product out with fewer bugs than most of the more complex and time consuming install of the SC'd products and the minimal amounts of boost required to get astonishing HP results is very tempting to me.
I am definately installing one ( or perhaps two like at least one of us is planning) on my car and must absolutely be first in line to get one when its rolled out for sale in a few weeks.
