Bigger intercoolers

[geea]

This is for those with bigger intercoolers. If you could also tell us why you went a certain way and how the car is compared to before the intercooler upgrade. How it affects lag/throttle response and anything else that could be important to people thinking about a larger intercooler.

I'm hoping to keep this civilised so if people could only post on their own experiences with the products that they are/have used it should be a very informative, non-flanming thread.

Geea.

[ktford]

& how much coin might also help, for those of us on the pension

Scotty

[OwnaXR6T]

APS, happy mine came with the phase 3 kit.

[xlr8ed]

tried PWR and wasted $750..no different..

jeff

[bcl]

Here's a picture of the stock intercooler alongside the Nizpro Intercooler as fitted to my car currently.

Note:

Factory IC is 175mm high; 370mm wide, 55mm depth

The Nizpro IC attributes are as follows:

Air to air

Tube & Fin

Size 365mm high; 470mm wide, 70mm depth

Top entry : air enters at the top so it minimises the length from the turbo to the inlet of the turbo.

Crossflow design : air enters at the top & leaves at the bottom to give the best crossflow effect, and tube & fin for best flow characteristics

Overall, it has 3.37 times more volume than the stock intercooler, with much higher flow capability, little pressure drop and good cooling capability.

It is not too thick: the thicker the intercooler the less air wil be available to the radiator for engine cooling, and running a hotter engine can be detrimental.

Too thick, and a larger radiator may be required (these are available).

In principal, the bigger the intercooler, the more lag you'll have.

The less inlet piping before and after the intercooler the better the overall result will be. Especially the shorter the piping length post intercooler to the inlet plenum, with less opportunity for the cooled air to re-heat.

As my power levels increase, I'll review if a larger intercooler may be warranted.

Brian

[aps]

It is not too thick: the thicker the intercooler the less air wil be available to the radiator for engine cooling, and running a hotter engine can be detrimental.

Too thick, and a larger radiator may be required (these are available).

In principal, the bigger the intercooler, the more lag you'll have.

The less inlet piping before and after the intercooler the better the overall result will be. Especially the shorter the piping length post intercooler to the inlet plenum, with less opportunity for the cooled air to re-heat.

As my power levels increase, I'll review if a larger intercooler may be warranted.

Brian

Hi Brian,

It's George here... After meeting with you several times and some healthy discussions over the past 4 or 5 years, I'd swear that it wasn't you who posted this information regarding the XR6T......

I'd be keen to know what led you to draw these conclusions, because the technical data generated during the development of the APS intercooler does not support this. In fact, a larger, true free flowing and more efficient bar and plate intercooler on the XR6T is not only kinder to the engine - by further reducing charge air temperature, but also assists in keeping total system pressure drop to a minimum.

As for the "in principle" comment regarding lag, we're talking cubic cm here not cubic miles. When 25 cubic cm adds .06 sec at 100 hp on the XR6T you have a lot of room to specify a "proper" intercooler before you get even close to experiencing lag.

Besides, the role of an intercooler to remove temperature from hot charge air and to present the smallest possible pressure drop.

Anyway Brian, I can see you're having fun with your T and I look forward to catching up with you again.

George

APS Web Team ... and other stuff

[bcl]

It is not too thick: the thicker the intercooler the less air wil be available to the radiator for engine cooling, and running a hotter engine can be detrimental.

Too thick, and a larger radiator may be required (these are available).

In principal, the bigger the intercooler, the more lag you'll have.

The less inlet piping before and after the intercooler the better the overall result will be. Especially the shorter the piping length post intercooler to the inlet plenum, with less opportunity for the cooled air to re-heat.

As my power levels increase, I'll review if a larger intercooler may be warranted.

Brian

Hi Brian,

It's George here... After meeting with you several times and some healthy discussions over the past 4 or 5 years, I'd swear that it wasn't you who posted this information regarding the XR6T......

I'd be keen to know what led you to draw these conclusions, because the technical data generated during the development of the APS intercooler does not support this. In fact, a larger, true free flowing and more efficient bar and plate intercooler on the XR6T is not only kinder to the engine - by further reducing charge air temperature, but also assists in keeping total system pressure drop to a minimum.

As for the "in principle" comment regarding lag, we're talking cubic cm here not cubic miles. When 25 cubic cm adds .06 sec at 100 hp on the XR6T you have a lot of room to specify a "proper" intercooler before you get even close to experiencing lag.

Besides, the role of an intercooler to remove temperature from hot charge air and to present the smallest possible pressure drop.

Anyway Brian, I can see you're having fun with your T and I look forward to catching up with you again.

George

APS Web Team ... and other stuff

George,

It’s interesting to see that you are continuing the APS tradition of criticizing other peoples' posts, in a nice way of course, rather than focusing on your own products.

There is nothing wrong with a good tube and fin intercooler; and this is not a debate about bar & plate vs tube & fin. In my car I know it works very well, and I’ve no doubt your intercooler works well also.

I don’t know about your maths; the actual extra inlet piping alone on your stage 3 compared to my car is around 600 cubic cm post IC, assuming a tubing radius of 40mm…do the maths…. So based on your “25 cubic cm adds .06 sec” that is actually 1.44 seconds of lag post intercooler alone.

I assume you have no issue regarding my comments related to core thickness impacting radiator effectiveness.

Brian

[Geeseman]

As for the "in principle" comment regarding lag, we're talking cubic cm here not cubic miles. When 25 cubic cm adds .06 sec at 100 hp on the XR6T you have a lot of room to specify a "proper" intercooler before you get even close to experiencing lag.

Hi George,

Have you had any experience testing the intake temps for the engine after it leaves the intercooler and goes through the piping to the engine? The reason Im asking is the piping runs across the engine and I would imagine picks up some heat from this, and expands as a result.

thanks

[turb06]

WOW, that nizpro IC looks more like a radiator when sitting next to the stocker.

[ducatijb]

APS intercooler here.....the engineering that has gone into this piece of art is first class...

As for the technical side of things....don't ask me...