Street Lethal

iTrader: (16)

Yes, when that intake valve open up, we want every corner of the intake tract to be as smooth as the airfoil, as this helps straighten out the air and increases the velocity (speed), so although the volume of the tract has not actually increased, you will still definitely get much more air into the cylinders when velocity is increased...

SiCkRs

iTrader: (6)

Oh ok cool thanks for teaching me this. Not even my college automotive teacher tells us this. I have another question would all of this be worthless if i don't port my cylinder heads?

TTOP350

iTrader: (8)

Right, I was talking about that for a NA motor. I am in no way knocking the port job, it looks nice. If you siamese the lower, then your pulling from both of the runners for more volume of air. I think piston speed, runner length/taper and lack of restriction creates the velocity. In a NA app of course.
At 30 PSI you could have a piece of drywall in there and your guna get air.
As I'm sure you know, If you set your motor to run 30PSI and then put bigger intake,heads, headers or exhaust on you will have less boost but make more power because of less restriction and more volume.
Boost is also known as wasted power and extra hot air that needs cooled..
Soo make your motor more efficient and you wont need to use that much boost to reach your power goals. No matter how nutty high your wanting them !! Of course these points are glossed over a bit but you get the idea.

Has anyone run a stock vs siamesed lower on a dyno or at the track? I've always wondered if its worth it.

Street Lethal

iTrader: (16)

Yes, boost is just a resistance reading, we can force in x amount of air at 30-psi, but then open up the intake tract even more and force the same amount of air with the same turbo at say 25-psi depending on how much we remove and finesse. The beauty of increasing the intake tract's volume, as well as speeding up its' velocity, is the turbo does not have to work as hard w/the added benefit being lowered air temps (denser air, less chance of detonation)...

Street Lethal

iTrader: (16)

Not worthless at all. When we siamese the intake, we essentially give the combustion chambers a closer source to draw it's air from, this increases our RPM potential because the pathway is shortened in terms of a volume source. Think of it like installing an LT1 intake, only your using your "gutted" TPI system instead. Here is the benefit regarding RPM...

SiCkRs

iTrader: (6)

Nice vid that what i want to break my tires loose when i want to without using the brake pedal... what other mods can i do for the intake wise this is what i have planned so far:
ported, siamised plenum and intake
port the plenum how u did
and smooth the bores on the stock tb
i aint going ram air since ima have a supercharger

AussieIROC66

Real nice sound, nice car, but that was what we call in OZ a line-locky (brakes SiCkRs)

dabird07

iTrader: (10)

I have to say i did none my port work the local shop did it they did a amazing job!

im uploading a pic the intake is ported on the bottom and polished all the way throught to rid of those bends on the wall i will be uploading pics of the heads work they did quite amazing

and the better she breathes the better she runs!

dabird07

iTrader: (10)

still stock valve size on intake and exhaust just 305 heads 081

ported and polished work

and the intake is beautiful! wich i would have to a pic of it. ..

Dyno Don

iTrader: (7)

If you want to get real serious:

This combo with a 355 ....makes 400/430 in my car.

TTOP350

iTrader: (8)

THOSE are the pix Ive been looking for! thanx for posting them!

dabird07

iTrader: (10)

wat size cam do u have and what type of heads dyno don?

SiCkRs

iTrader: (6)

would love to know how to do that.

dabird07

iTrader: (10)

I know that its crazy numbers would love to know wat all is in that motor if you feel like sharing!

Dyno Don

iTrader: (7)

It is a 355 forged TRW's/ 10.7 comp./ AFR 195 Elim./
Jones cam 228/228 113 LSA .560 lift/My headers & dual cat Y/ 3 1/2" cat back/
super ported 3860 base/modded SLP runners and 52mm TB.

By the way, that kind of blows away that theory about losing tq. with short runners. It makes 350+ tq. from 2500 to 4900.

dabird07

iTrader: (10)

that is a crazy engine!


any chance you have a vid of wat the engine sounds like?

no new tires

(holy thread bump)

Any updates in here? I have a MAX effort TPI too. It flows so well that im breaking from going lean UP top. My AFPR just came in the mail too.

PAFORM350

My exact thought. Hawks sells these for $499.00. seriously?