charge coolers
Custom
Joined: Mar 2005
Posts: 1,170
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From: In The Workshop
intercoolers
With intercoolers there are 2 types. The twin pass (like the GRS) and the single pass (like the Pro alloy and nms)
The twin pass
Description:
The Intercooler is divided into to halfs and the air flows though the bottom half then round 180 degree turn at the end tank and then through the top half.
Advantage:
The air is cooled twice as much.
Disadvantage:
The air has to make a 180 degree turn which creates a pressre drop so the pressure you put in to it (i.e your turbo boost) drops when it comes out the other side of the Intercooler.
Single pass
Description:
The air flows through the entire width of the intercooler core and goes in one end and out the other.
Advantage:
The air is able to flow easier through the core without having to make any turns so theres no pressure drop. i.e what you put in you get back out.
Disadvantage:
The air is exiting the intercooler the opposite end of the intercooler and is often the wrong end to plumb it back into the engine inlet.
Charge Cooler
Description:
Air is flowed through a core that is cooled by a water filled jacket. The water is pumped around this jacket and the heat transfers to the water which is then pumped into a mini radiator for cooling and then back around the system and back into header tank and then back into water jacket again.
Advantage:
water transfers heat 4 times better than air. The water takes longer to heat up than air. The core is often small and a straight in and out design with no boost drop.
Disadvantage:
The water is only cooled when moving. The water can easily become saturated with heat and thus reduces its cooling capacity around the water jacket.
Personal Conclusions:
The Charge Cooler is better in lower boost situations, and situations where the power is not held for a long period of time (i.e the Charge cooler works very well on Rolling road days, 1/4 mile sprints) Around 17psi of boost is its limit IMO and the whole system will be overwhelmed if held flat out in a higher gear or used on a track day.
The Intercooler is better in situations where the boost is higher and the power held on for longer. The intercooler provides better cooling even when used on track days or flat out high speed runs.
With intercoolers there are 2 types. The twin pass (like the GRS) and the single pass (like the Pro alloy and nms)
The twin pass
Description:
The Intercooler is divided into to halfs and the air flows though the bottom half then round 180 degree turn at the end tank and then through the top half.
Advantage:
The air is cooled twice as much.
Disadvantage:
The air has to make a 180 degree turn which creates a pressre drop so the pressure you put in to it (i.e your turbo boost) drops when it comes out the other side of the Intercooler.
Single pass
Description:
The air flows through the entire width of the intercooler core and goes in one end and out the other.
Advantage:
The air is able to flow easier through the core without having to make any turns so theres no pressure drop. i.e what you put in you get back out.
Disadvantage:
The air is exiting the intercooler the opposite end of the intercooler and is often the wrong end to plumb it back into the engine inlet.
Charge Cooler
Description:
Air is flowed through a core that is cooled by a water filled jacket. The water is pumped around this jacket and the heat transfers to the water which is then pumped into a mini radiator for cooling and then back around the system and back into header tank and then back into water jacket again.
Advantage:
water transfers heat 4 times better than air. The water takes longer to heat up than air. The core is often small and a straight in and out design with no boost drop.
Disadvantage:
The water is only cooled when moving. The water can easily become saturated with heat and thus reduces its cooling capacity around the water jacket.
Personal Conclusions:
The Charge Cooler is better in lower boost situations, and situations where the power is not held for a long period of time (i.e the Charge cooler works very well on Rolling road days, 1/4 mile sprints) Around 17psi of boost is its limit IMO and the whole system will be overwhelmed if held flat out in a higher gear or used on a track day.
The Intercooler is better in situations where the boost is higher and the power held on for longer. The intercooler provides better cooling even when used on track days or flat out high speed runs.
cheers. front mount it is then. 
I'm Finding My Feet Here Now
Joined: May 2005
Posts: 132
Likes: 0
From: Preston, Lancashire.
front mounted intercooler are vgood if your going to cut your bumper up, to get full advantage
i didnt wont to cut my bumper up so i fitted the pace chargecooler and its mint, im running 20psi and the air charge temp is well low
i didnt wont to cut my bumper up so i fitted the pace chargecooler and its mint, im running 20psi and the air charge temp is well low
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