BDC

Explain the difference between POWER production and boost then to us "BP bitches", Ted.

B

RX-Heven

iTrader: (1)

I don't know why ReTed and BDC hate each other so much and I don't really care.
I do know I am glad that they do as it has provided me with years of free entertainment when I am bored.

RETed

See what I mean...
My claims get pegged as bullshit yet again.

400 / 14.5 = 27.5mpg
Stock S4 gas tank full capacity is 16.6 gallons.
I don't usually dare run it down to 15.0 gallons (to fill), cause you're scraping bottom of the barrel on the gas tank.

Funny, I managed to do this back-to-back-to-back driving to and from Sacramento, CA and Las Vegas, NV when I moved a few years ago.

Funny, I've seen others who claimed the "magical" 28mpg here and there, but I didn't believe it myself until I did it with my car.
Not impossible.


-Ted

Judge Ito

wow. just read some of this novela (soap opera) I think cris meant. as the rotor turns.

I would not dis-credit any type of port when it comes down to turbo charging. me and many others in here, have seen all kinds of ports work with a turbo. Me personally a nice perfectly ported streetport, with a partial peripheral port, will land good vacuum = power and not comprimise to much the intake and exhaust overlap that is present with a full bridgeport.

j9fd3s

iTrader: (3)

streetability is inversly proportional to the amount of instructions you need to give to a person who has never driven the car before.

examples:

if you can toss the keys to anyone, and say have fun, you have a streetable car.

if you dont have keys, and have to have a printed list of things to do to the car to be driven, the last item listing your home, work and cell phone numbers, your car is unstreetable.

mom, and alex pfeiffer have had to borrow cars before....

RETed

You're right.
It seems that there's two different parties on turbo sizing...
1) Run it small, but big enough not to choke the engine too much
2) Run it big, but size it down enough so the engine can barely spool it on the low end

IN GENERAL, a smaller turbo is cheaper - remember, I said "IN GENERAL".

So unless we're talking huge budgets here (I deal with mostly FC guys, so money does matter in most cases), turbo sizing does play a part when factoring in price.

Now, this presents an interesting dilemma...
The consensus is that turbo sizing is dependent on the porting, correct?
Compressor size basically gets thrown out the window, since that primarily dictates power potential of the turbo and not power band.
Thus, we're stuck with turbine sizing...
And in a weird twist of fate, turbine sizing also has a factor in power potential...although most people think of turbine sizing as only power band.
So, now we're stuck at a quandary!
How can we compare two same sized turbos (same size = same compressor size) on an SP versus a BP, when we can't use the same size turbine (A/R)???
So, we're back to square one...and we're talking about an impossible question to answer given the circumstances.

On the note about streetability...
Efficiency (i.e. gas mileage) is an important factor.
I've proven (although BDC just refuted my claim) of better gas mileage with the SP.
Just look at the fuel maps of a BP versus an SP in most of your highway cruising ranges - the BP does eat more fuel in the vacuum ranges.
I think this has been admitted.
Also, "off boost" drivability is not as smooth as with an SP - also already admitted.
Which brings us back to turbos...the above has NOTHING - I repeat NOTHING - to do with turbos or turbo sizing.
Ding, the light bulb just went on!
Arguing about turbos and turbo sizing has no bearing on those above points.
Arguing about turbos and turbo sizing is moot.
This has everything to do with the porting types only, period.
It's all still about port opening, port duration, port closing, and overlap...
It's all still physics.
You can't bend the laws of physics.
Overlap theory still applies, no matter what the BP crowd likes to claim.


-Ted

RETed

Simple, just answer...
"Does boost = power?"


-Ted

Doc Holiday

iTrader: (2)

When did this thread turn into a streetcar debate? Bridgeports get driven on the street by LOTS of people, get over it.

RETed

You need to go back to English class...
Where did I say you *CANNOT* drive a BP on the street?

WTF?
Why are all you guys on here on a Saturday morning?
I'm working another hour and a half, so that's my excuse.

It's St. Patrick's day - aren't you supposed to be drunk on green beer or something?


-Ted

BDC

I asked you, Ted. You made the assertion; the burden of proof rests on you to prove your point. Don't try and turn it around on me. Nice try, though.

B

rotatech

bridgeport is the best s!#t

RETed

Dude, stop being stupid.
If you really don't know the answer...
Airflow = power, not boost.


-Ted

felix_is_alive

you know whos missing in this conversation/debate .....Evil Aviator .......Where are you ???!!!
just seems to me it would turn out a lot more "fun" if he`d drop by .
I`ll go put up the bat-sign ......
Wow what a thread

hondahater

iTrader: (2)

hey Brian thanks a ton for the awesome port job! I just got the irons in late friday and felt like it was christmas all over again..........Except way way better than any present I normally get, Anyways for anyone that wants to see these ports go here ( http://bdc.cyberosity.com/v/Misc/CameronGates/ ). Simply amazing!


yummy!

13btnos

iTrader: (1)

I'm going to have to slightly disagree with you on that point. I understand that better airflow will generate power but boost will more than make up for a poorly ported motor. For example I saw the inside of a friends engine and I was talking trash to him because the port work was just shabby and didn't even look finished. I even offered to port his next motor for him for free and he just starts laughing and keeps repeating 700 to the wheels, 700 to the wheels, and yes he showed me the dynograph to prove his point. And he states if it ain't enough keep turning up the boost. Who am I to argue with someone making that kind of power. Just my 2 cents.

Doc Holiday

iTrader: (2)

Like I said, how did this turn into a streetcar debate? You need to relax Ted, youre a little too defensive. Never said YOU said it couldnt be done, all I said was "when did this turn into a streetcar debate?". Woosah buddy, woosah.

Roen

iTrader: (2)

boost does not equal power, cfm equals power. Push 15 psi from a T25 and I could make the same power with a T88 at a much lower boost level. It's the amount of air the turbo's moving, not the amount of pressure in the turbo.

iceblue

I think this statement is safe to say it will never be worth a technical reply. shhhhhhhhh

crispeed

My technical reply to that would be after 'boost' there's always 'juice'!

peejay

Actually, it's mass flow that makes power.

That, and actually doing something useful with it once you get it in the engine.

pluto

Nah!! It's those hamsters that makes the power.... Put more hamsters in there and you'll see the gain. BTW, stickers are usually worth at least 50hp....

AlexG13B

iTrader: (7)

and dont forget park benches as wings add hp also :-D

Boostmaniac

It is a proven fact that a bridgeport supports a bigger hamster internally.

Boostmaniac

It is a proven fact that a bridgeport supports a bigger hamster internally.

13btnos

iTrader: (1)

Please!!! Don't compare apples to oranges why don't you compare apples to apples. So your telling me a T88 at 15psi boost is going to make the same power at 30psi boost. Didn't think so! Boost coralates with cfm output so when you up the boost you are injesting more air into the motor.

Hey boostmaniac and pluto if you move up to a PPort motor does that mean you can run a guinea pig. LOL. Damn this thread has gone to ****. But it sure is entertaining.