KB A2A front mount

[nightdiver]

I just finished the mod and i would like to know if anyone uses a bigger diameter tube from the cooler to the intake may be 70 or 75 mm
I see some pics from Tonys truck and they look bigger
Thanks

 

[nightdiver]

Anyone ?

 

[10secTy]

Tonys pipe from the turbo to intercooler is 2.5"
Then from the intercooler under the frame is 2.5"
Then it expands out and becomes 3" up to the throttle body.

Nolan Nykyforuk

 

[Methuselah]

Tonys pipe from the turbo to intercooler is 2.5"
Then from the intercooler under the frame is 2.5"
Then it expands out and becomes 3" up to the throttle body.

Nolan Nykyforuk

Can you explain the reasoning behind that (assuming this isnt a KB-stock setup)?

I imagine it's something along the lines of increasing the velocity of the air through the intercoolers and providing more volume to draw on before the throttle body.

I was thinking that the pipe before the throttle body should be kept small to retain as much throttle response as possible but then having a larger pipe after the compressor to mildly increase flow through the intercooler.

Seems like I have it backwards but I dont know why.
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Jaguar Mark Vii History

 

[10secTy]

Because it looks cool 8) .

Really thats why no other reason.

It did not affect anything at all.

Nolan Nykyforuk

 

[TurboTony]

Because it looks cool

Nolan tells the truth, when we were building the piping the 2.5 looked pretty weak. I had a 3 inch mandrel left over from the d/p so away we went.

The 2.5 woulda been quite a bit easier to fit, but who cares, 3 inch just looked that much better


Tony

 

[nightdiver]

We have seen significant power gains with bigger tubes in other cars
Ill order a new cooler with 45% more volume than KBs plus double cooling I allready gave the order with 3" inlet and outlet 8)

 

[Methuselah]

Because it looks cool 8) .

Oh...I thought you guys were smart or somethin'
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MASTURBATION TUBES

 

[10secTy]

oh did I mention
10.71@126
with unported vortecs, stock manifolds and stock ecm

Nolan

 

[nightdiver]

Nolan
what if you get a bigger intercooler , a Fast and a tranny brake?
I guess youre gonna make us

 

[10secTy]

Well next plan is the IX's
With out FAST
With out Tranny Break
With out headers
But with a big intercooler.

Nolan

 

[BigAl...]

Hey nightdiver, I'm interested in these results of more power with bigger pipes, I can see if you went from a mandrel KINK 2in stock pipe to a nice mandrel bent 2.5 were there might be a difference in flow but I just don't see how just a bigger pipe is better. (I am not looking for flames I am truly interested in this) the way I see it is, the outlet of the turbo is 2.5 (T housing) then you're cooling the air with the intercooler effectively making it "smaller" (hot air expands, cold air contracts). I just don't see there being a benefit to the bigger pipe. Remeber all of this air is under alot of pressure, the normaly aspirated guys are always going with bigger TB's but they don't have 25psi knocking on the door. Last but not least is the area of the two trottle plates I beleive is just about two inches, you could have a nine inch IC pipe it still has to go through the TB.

Didn't someone mention the buick guys had lost some throttle response with the bigger pipes.

just my .o2 worth
BigAl...

 

[nightdiver]

Nice.....
We made a change from 55mm to 63mm on a GM 2000 16V turbo and we "took" 25 hp
You talk about volume right ?
The way i see it we need to pass more than 1000 cfm from a tube that is 2,5 inches...i see high pressure to that cause a straight pipe on a flowtest gave ~550 cfm
I dont like pressure drop so i start from the pipes and then go to the cooler..... now......ill use a cooler that is 100mm thick ,57cm x 40 core plus the end tanks
There will be some delay but the future BBT72 will take care of this
Two 50s doesnt do a 100mm. You have to add some % to it
Ill try this and i think it will work and net some nice ##
You never know till you try
I ended to these ## after many years of mods ,im 36 you know
Ive seen too many turbo cars & trucks .Its my business you know cause i sell spare parts
It will take some time to have some results to see...till then :drinking: