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Old 10-07-07, 07:09 AM   #12 (permalink)
GrumpySteelMan
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Join Date: Oct 2007
Location: Greensboro, NC
Posts: 982


Car 1: 2004 Nighthawk RL
Car 2: 2005 Nighthawk TL
Car 3: 2002 525i Sport Wag



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Quote:
Originally Posted by draztic1011 View Post
you can just supercharge your RL ....Turbocharging it doesn't make any sense becaues turbo are best useful for manual cars (stick) and supercharge is for automatics you can put a turbo if you want but you'll get better performance by getting a supercharge
This is ignorant and totally wrong. You shouldn't be allowed to post, anywhere, about anything that matters. I hope the moderators ban you so I don't ever have to read another one of your retarded, misguided, and ultimately false statements. Go back to asking about chrome pillars for your car, and stay your peanut-sized raccoon (shiny-shiny me like a shiny-shiny!) brain away from the performance section.

Proper turbocharging is excellent on any vehicle. Trash-can turbo projects are usually bad on any vehicle and superchargers are too hard to even get on the car by most idiots, that makes them a safer bet (for the idiots).

The only real plus for superchargers are positive displacement/screw-type/roots-type blowers that have absolutely instant off-idle response. The centrif-style blowers have lag just like exhaust driven turbochargers.

There is no peer to a properly set up turbocharger system. IN FACT a turbo on an automatic car can be especially exciting because you can power-brake the car and generate boost at launch...which in an optimal setup effectively beats a crankshaft driven blower in all respects at the drag strip.

Turbochargers also have very little effect on fuel economy at cruise speeds...this cannot be said for superchargers (even with a bypass valve) because all the mass and drag of the parts is constantly on the crankshaft. Unless you have a toyota previa supercharger that has an A/C compressor style clutch, but that's just silly!

Quote:
Originally Posted by JamesG View Post
any sites info on forced induction legends that are handy? s/c specificly but i will look at anything to help. i noticed some gto/monaro guys over here doing the tt thing with the turbos mounted down under the car near the auto!
Oh yes, GTO, Monaro, Camaro. S&M-bondage-tight engine bays force drastic measures at times. These cars have largish v8 engines, so they have a lot more heat to waste by the long pipe runs.

My personal feelings about the rear-mount turbo systems:

I would avoid the extra distance if possible.

Please consider you have to run an electric oil return pump and lines to and back from the turbocharger, so if you hit something in the road that snags that line your engine could bleed itself dry of oil in no time flat. If your electric oil return pump breaks/loses power/etc it can at best fill your exhaust and/or intake pipes with oil, but at worst can destroy the seals in the turbo by forcing oil past the seals (there can be NO resistance to oil flow on the return/drain side of the turbo).

If you choose a water cooled turbo, which I would suggest...the same could happen to your cooling system.

The intake also ends up low to the ground and in more danger of sucking up water...which is the bad kind of sucking...I assure you.

These guys who run these rear mounts actually get nicer EGTs...most of the V8 guys run turbine housings that are too small (because they really should run T6 turbos, instead of T4s IMO)...but that shouldn't be a concern for you.

Quote:
Originally Posted by JamesG View Post
I already have a turbo T3/T4 hybrid sitting here that will suit the RL perfect, spool up around 2800-3000 rpm with a converter should be fine! Run 7 PSI on my stock motor untill I source the bits for my JDM motor on the floor here to give her stronger internals. My Type R teg turbo was so obvious but this will be so much more fun! Acura 3.5 RL AKA........Stealth Bomber! Guys check the site and see what you think!!!!!!!!!!!
What are the specs on this turbo? 'Cause if it was great on your teggy, it's gonna be shite on your RL. It's all about matching things up. I'd be glad to help you with the technical aspects of your setup.

I think twin 60-trim T3s with .48 A/R housings would be nifty...not 'cause it would work well, but because it would be nifty.

Seriously a GT25 turbo with a .082 turbine would be perfect for your car. In an otherwise optimal setup you could see:

4psi ~325+bhp
6psi ~350+bhp
8psi ~380+bhp
10psi ~400+bhp
12psi ~420+bhp

How's that for awesome at any build level. Also the GT25 is a ballistic ball bearing turbo, while it is more expensive, it is the only way to fly.
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