experience with larger intercooler

12vriviera

12vriviera

That Guy with that car
Joined
Mar 31, 2009
Messages
6,846
What are your experiences going from an intercooler that limited airflow to one that has twice the flow?

I just recently went from my 80 dollar Ebay intercooler to A downflow style. Increasing flow paths by about 120%
I dropped boost by 10psi measured at the intake without any loss in performance on the butt dyno. Anyone else experience anything similar or debate why i lost boost etc?
I have a theory.. Restriction of the old intercooler was causing a drive pressure issue where small turbo couldn't compress air any more into hot pipe. And now that restriction is gone, decreasing amount of input necessary into secondary turbine wheel, thereby allowing secondary to work harder and primary less.
Theories?
 
Yep. No boost leaks.. Nice and solid.. What intercooler is on the vette? Looks just like the one i took off my car....
Just 10 psi less i wish i has a drive psi gauge and ability to log before and after pressures,temps etc on intercooler.
 
I got that. I ask just wondering if by freeing up restriction into engine via intercooler, will that free up restriction out of engine, thereby giving me an accurate boost number, the only thing Ting the two further bring forces upon turbos wheels.
 
c farmer said:
Boost is restriction in the air flow. Less restriction = less boost?
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He said he is measuring at the inlet. Possible that the new intercooler has more restriction, which slows the air down and it is an air to water, so you have more drop across the cooler, but the cooler air makes more HP
 
Its not air to water.. Its the stule that its made for a mustang. 8"tall core 24 inches wide. 3.5 thick.. So 84sq inches on the face of the core vs 36 sq inches of core 12x3x24...
Less cooling time in the core, but more area to flow through... So the air technically does show down more to cool a but better but there its now little to no restriction in intercooler.(i think)
 
c farmer said:
Boost is restriction in the air flow. Less restriction = less boost?
Click to expand...

if your following 20% more air (assuming stock = 100 new = 120). then you would need less boost to get the same effect b/c your flowing the same. Think of air coming out of your air compressor. If you create a bigger hole for air to escape, it'll empty's quicker.
 
Its technically 130 percent More area of flow through core, just a shorter core.
 
24vriviera said:
Its technically 130 percent More area of flow through core, just a shorter core.
Click to expand...

I just had another sip and re-read that and yea i was a few off.. But I would say your now to the next part of the restriction. Pipes, turbo, manifold, yada yada yada.

Does your putt dyno say the same of better?

I wonder if by the better flow your making a more stable hp and tq curve
 
Pressure is generally always a measure of restriction. Could have something to do with velocity and airflow through the I/c ?

Sent from my LG-P930 using Tapatalk 2
 
autoferret said:
I just had another sip and re-read that and yea i was a few off.. But I would say your now to the next part of the restriction. Pipes, turbo, manifold, yada yada yada.

Does your putt dyno say the same of better?

I wonder if by the better flow your making a more stable hp and tq curve
Click to expand...

I believe it is s lot more stable, i can watch the wastegate work on the boost gauge.
 
The one on the vette is from race parts solutions, and it isn't on their site anymore. It is just a thicker core. I can't tell you what boost it ran before because it didn't have one before. I have installed banks and spearco intercoolers before and seen boost drop and I'm sure it was due to less restriction and more flow in the cooler. So you could have lost boost because the turbo(s) don't have to push the air through the intercooler anymore.
 
I had the same happen to me when I changed from stock inner-cooler to the Banks Techni-Cooler kit, boost was down with the stock turbo. I was expecting a small amount of perf. from 1300.00 worth of reduced restrictions with the bigger cooler, the 3.5" tubing and monster ram horn but was sadly dissappointed, actually felt like I lost performance. I attributed the lower boost to the old Physics law, A increase in volumn = a reduction in pressure. I think thats how it goes, been a long time since I was in High School so someone correct me if I'm wrong, LOL.
 
Chevokeeman said:
I had the same happen to me when I changed from stock inner-cooler to the Banks Techni-Cooler kit, boost was down with the stock turbo. I was expecting a small amount of perf. from 1300.00 worth of reduced restrictions with the bigger cooler, the 3.5" tubing and monster ram horn but was sadly dissappointed, actually felt like I lost performance. I attributed the lower boost to the old Physics law, A increase in volumn = a reduction in pressure. I think thats how it goes, been a long time since I was in High School so someone correct me if I'm wrong, LOL.
Click to expand...

It's not going to benefit as much with a stock Turbo. If you had a bigger Turbo and then switched over to the new intercooler you Probably would have seen much more gains.

This is the same idea as head porting. less restrictions=less boost and more flow

from phone
 
24vriviera said:
Its not air to water.. Its the stule that its made for a mustang. 8"tall core 24 inches wide. 3.5 thick.. So 84sq inches on the face of the core vs 36 sq inches of core 12x3x24...
Less cooling time in the core, but more area to flow through... So the air technically does show down more to cool a but better but there its now little to no restriction in intercooler.(i think)
Click to expand...


If your measuring it at the inlet of the engine, then less restriction through the intercooler should result in more boost.
 
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