Question: pedistal flow

[TrentNell]

Are all pedistalls created equally ? i have been thinking about this since i ported out my pedistall . if you think about it every ounce of flow the motor will ever make has to flow through the pedistall . so whats the skinny do they all flow the same do the tube style flow more than the cast ?

 

[Turbo Buick 6]

Are all pedistalls created equally ? i have been thinking about this since i ported out my pedistall . if you think about it every ounce of flow the motor will ever make has to flow through the pedistall . so whats the skinny do they all flow the same do the tube style flow more than the cast ?

Only real way to tell is with a flow bench. But there is a restriction there. I had been toying with building a plenum style pedistal a while back. But then a T04 flange can become the restriction, but any restriction you remove helps, even if it is not the bottleneck.

 

[TrentNell]

Only real way to tell is with a flow bench. But there is a restriction there. I had been toying with building a plenum style pedistal a while back. But then a T04 flange can become the restriction, but any restriction you remove helps, even if it is not the bottleneck.

i was suprised how much i was able to do just gasket matching my cast BD T-3 ped .

 

[Turbo Buick 6]

i was suprised how much i was able to do just gasket matching my cast BD T-3 ped .

I'm sure that made a huge improvement in flow, but there is only so far down you can reach

 

[TrentNell]

I'm sure that made a huge improvement in flow, but there is only so far down you can reach

excactly i just tried to make smooth transitions , who knows if it made any diff but i know it didnt hurt .


i figure if a guys has to buy a ped anyway why not know who's is best

 

[jpowel29]

I went from an ATS T3/T4 cast pedistal to a tubular T4 pedistal. That combined with the headers & up-pipes help a tremendous amount with the 1.28 A/R housing on my GT42. I don't feel that I have lost any driveability going up from a .98 A/R housing and my EGTs at the top end of the track have stayed the same (running a much more aggressive PW tune)

 

[TrentNell]

I went from an ATS T3/T4 cast pedistal to a tubular T4 pedistal. That combined with the headers & up-pipes help a tremendous amount with the 1.28 A/R housing on my GT42. I don't feel that I have lost any driveability going up from a .98 A/R housing and my EGTs at the top end of the track have stayed the same (running a much more aggressive PW tune)

:coolspot: i have been considering swaping to a t-4 ped and doing a t3-t4 adapter just to get more flow then switch to a looser A/R on the small turbo .

 

[Turbo Buick 6]

If ya want to send me a bunch of pedistals I have the capability to flow them.....but I'm not buying them:happy2:

 

[Trippin]

Just buy the biggest pedestal you can find and it will flow the most, however, it will also kill the signal to the turbo.

Velocity is the key here...........

 

[maine04max]

couldnt you extrude hone them ? or is this not practical ? what do you mean by signal to turbo?

 

[paint94979]

couldnt you extrude hone them ? or is this not practical ?

I would hone the exhaust manifolds

 

[bullfrogjohnson]

I wouldnt mind trying a T6 pedistal

 

[03 D-max]

what do you mean by signal to turbo?

as in it will have more lag and wont respond as much to the throttle pedal. like putting your thumb over the water hose not as much flow but alot more pressure which has more force at moving what ever you point it at. you get a very bog pedestal then you wont have the pressure. I'm sure there is a sweet spot any bigger and you loose driveability any smaller and you are loosing flow to the turbo. Hope this helps

 

[RodZZilla]

I had wondered about extrude honing the manifolds and pedistal. Then I saw what they got for doing manifolds. :spit: :spit: I think I might upgrade to headers at some point.

 

[S Phinney]

I did a little porting on the BD T3 pedestal I have and I think its probably why the turbo I'm running lights so low in the rpm's. Uniform flow would be beneficial with any pedestal therefore the tubular style probably will out perform the cast style. As Guy said signal to the turbo is the first thing that has to occur to perform great.

 

[racinmike77]

:coolspot: i have been considering swaping to a t-4 ped and doing a t3-t4 adapter just to get more flow then switch to a looser A/R on the small turbo .

You need to save your money and get a T4 s300 with a stainless housing.

 

[TrentNell]

You need to save your money and get a T4 s300 with a stainless housing.

too much money for the gains , it would be a good race setup though .

 

[Turbo Buick 6]

Just buy the biggest pedestal you can find and it will flow the most, however, it will also kill the signal to the turbo.

Velocity is the key here...........

I havent seen anything on the market that is big enough to do that. I understand the theory but unless you make it flow more than your up-pipes I think it will work well.

 

[02bigstrokin]

You need to save your money and get a T4 s300 with a stainless housing.

to bad they dont make a such thing. the only stainless housing that is available for the s300 is from htt and its a t3. 13cm or 16cm, they are both t3.

 

[sweetdiesel]

to bad they dont make a such thing. the only stainless housing that is available for the s300 is from htt and its a t3. 13cm or 16cm, they are both t3.

Why cant you just get the cover done? On any turbo?