Turbo your Titan...Funny!

[dman]

Check this one out:
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

I have seen these before on ebay. The seller represents this as an electric turbo kit when in all actuality it is nothing more than an electric gas fume blower for boats used to vent the air out of the engine compartment. It is NOT used to vent air into the intake of any engine. Man, this is like a $20 part that you can find in any boat dealership and people are bidding this up over $90 on ebay...suckers.

[dman]

Here are some similar type units at a marine dealer:
http://www.westmarine.com/webapp/wcs...02&storeNum=12

[Sammy Sandbag]

normaly people mount a on and off switch "from an autoparts store" and are able to toggle the electric motor on and off depending on when you want that little boost

That is absolutley hillarious. "I need to go faster, let me just flip this switch" 200cfm? Aren't fans rated in CFM and turbo/sc rated in PSI. These people are morons.

[Davace97]

I have a 700 CFM carb on my mustang. If I put that on the intake and it only blows 200 CFM how is it supposed to increase performance? Turbos increase volume by increasing density not flow.

[SNEAKY]

Originally Posted by sammy sandbag

That is absolutley hillarious. "I need to go faster, let me just flip this switch" 200cfm? Aren't fans rathed in CFM and turbo/sc rated in PSI. These people are morons.

blower and turbos are rated in how much air they flow. PSI is a measure of resistance. if you have large heads and good exhuast and large displacement motor, and you put 10PSI of boost on it. it will equal X amount of air flow. and then you take that air flow and put it into a smaller motor with more restrictive heads, it may be as much as 20PSI of boost.

[Sammy Sandbag]

Originally Posted by SNEAKY

blower and turbos are rated in how much air they flow. PSI is a measure of resistance. if you have large heads and good exhuast and large displacement motor, and you put 10PSI of boost on it. it will equal X amount of air flow. and then you take that air flow and put it into a smaller motor with more restrictive heads, it may be as much as 20PSI of boost.

I see. But how often do you see a supercharger or turbo rated in CFM? I haven't. Either way, these people are still morons.

[fish_head]

that's really funny

[BigSteve]

You don't see many turbo/supercharger applications listed by CFM ratings for two very good reasons. First most are street legal kits and the PSI rating they give you is the legal max. Second because most people would not know how to equate a CFM rating to their motor. You would have people buying the biggest turbo/sc they can get their hands on and then get pissed off when it hurts their peformance. Plus everyone likes to brag about how much PSI they can run.

[ChuhBaca]

The sad thing is, I think that the air being fed into the engine moves faster than the fan pushes. This means that the fan would actually slow down the air and reduce your power!

[JerseyDirt]

Originally Posted by BigSteve

First most are street legal kits and the PSI rating they give you is the legal max.

Sorry pal, but there is no legal max on how much boost you can have. Is there a legal horsepower limit too where you live?

JD

[SNEAKY]

Originally Posted by JerseyDirt

Sorry pal, but there is no legal max on how much boost you can have. Is there a legal horsepower limit too where you live?

JD

: Dr Evil: ONE MILLION HORSEPOWER : Dr Evil:

[SupraTitan]

CFM is a concern on a turbo, an example would be lets say a T-66 turbo flowed 800 cfm @ 1.0 bar of boost(14.5 psi), then a much smaller turbo such as a t-25 flowed 250 cfm @ 1.0 bar of boost. Same psi but way more air with the larger turbo, you can use compressor maps to find the right turbo for each engine application and see where its sweet spot is, the map will give you such info as efficiency, and cfm at whatever boost level. People get to wrapped up in how much boost a car is putting out, when its the amount of flow that really matters.

[SNEAKY]

Originally Posted by SupraTitan

CFM is a concern on a turbo, an example would be lets say a T-66 turbo flowed 800 cfm @ 1.0 bar of boost(14.5 psi), then a much smaller turbo such as a t-25 flowed 250 cfm @ 1.0 bar of boost. Same psi but way more air with the larger turbo, you can use compressor maps to find the right turbo for each engine application and see where its sweet spot is, the map will give you such info as efficiency, and cfm at whatever boost level. People get to wrapped up in how much boost a car is putting out, when its the amount of flow that really matters.

i thought 1.0 bar was atmosheric pressure, 2.0 bar is 14.5 (or double atmosphere) and 3.0 bar is around 28-29psi. i know if we are runng anything more then 10-12 PSI, we use a 3.0 bar map sensor.

[Davace97]

Originally Posted by SupraTitan

CFM is a concern on a turbo, an example would be lets say a T-66 turbo flowed 800 cfm @ 1.0 bar of boost(14.5 psi), then a much smaller turbo such as a t-25 flowed 250 cfm @ 1.0 bar of boost. Same psi but way more air with the larger turbo, you can use compressor maps to find the right turbo for each engine application and see where its sweet spot is, the map will give you such info as efficiency, and cfm at whatever boost level. People get to wrapped up in how much boost a car is putting out, when its the amount of flow that really matters.

On any given engine either one of your turbos would be producing the exact same amount of power if restricted to 14.5 psi . The wastegate on the first would be considerably more open than on the second. The design of the intake system determines CFM not the turbo. In your example the pressure is the constant. On an engine the max CFM is the constant. The turbo can only increase the density of the air in the combustion chamber by increasing the pressure.

[Davace97]

Originally Posted by SNEAKY

i thought 1.0 bar was atmosheric pressure, 2.0 bar is 14.5 (or double atmosphere) and 3.0 bar is around 28-29psi. i know if we are runng anything more then 10-12 PSI, we use a 3.0 bar map sensor.

He's right. Turbo boost gauges measures pressure above atmospheric pressure not total pressure. That's why 14.5 psi of boost on a boost gauge is 2.0 bar.