Looking into intercoolers/piping kits, tips and suggestions ?

[Dannyb]

Hey there, just been having a look around at some intercoolers and found one thats a HDi intercooler kit for GALANT/LEGNUM VR4 , anyone have one or had experience with one ? or other intercoolers. tips ? let me know your set up

cheers guys :2thumbsup

[Atik]

Not sure what spec the HDi is, but I would expect it to be less than the VR4 V6TT engine? If so, it may not provide any additional benefit over stock.

Most people go for a 600x300x76 FMIC without much hassle. You'd need to source appropriate elbows and joiners to mate it to the stock pipework but that is easily sorted with alloy pipes and silicone joiners.

[Humpty's Revenge]

Not sure what spec the HDi is, but I would expect it to be less than the VR4 V6TT engine? If so, it may not provide any additional benefit over stock.

Most people go for a 600x300x76 FMIC without much hassle. You'd need to source appropriate elbows and joiners to mate it to the stock pipework but that is easily sorted with alloy pipes and silicone joiners.


http://www.ebay.co.uk/itm/HDI-GT2-INTERCOOLER-KIT-FOR-GALANT-LEGNUM-VR4-/230673058932?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item35b52f8c74

[Atik]

/lol It's a make!
Well that does look like it would be an upgrade then.

[Adam.Findlay]

HDi is a really top quality intercooler. If you can get it for a good price definaty go for it over the other cheap Chinese crap they sell on trademe

[carfanatic]

I was looking at the one on ebay, then I noticed the postage!!

[Trotty]

Hdi coolers punch well above their price. Very effective. I'm running bar and plate 600x300 Chinese no name and I'm making 210kwatw. Any 600x300x76mm core will be better than stock

[CANDEE]

Make sure you get the 600x300x76 version. I have a 600x280x80 one and the crashbar needs to be spaced or cut.

[Davezj]

Hey there, just been having a look around at some intercoolers and found one thats a HDi intercooler kit for GALANT/LEGNUM VR4 , anyone have one or had experience with one ? or other intercoolers. tips ? let me know your set up

cheers guys :2thumbsup

i know you are an NZ member and it is not practicle to buy the items listed due to postage cost but this probably the cheapest way to do an intercooler up gread. you will just have to source the part locally in NZ.

http://www.clubvr4.com/forum/showthread.php?63187-Detonation-Knock-pre-ignition-removal-reduction&p=697695&viewfull=1#post697695

this is the setup post 17 i am running and it seems to work very well.
hope this helps

[CANDEE]

Also you can fit a 600x300x76 intercooler without modding the crashbar(which is illegal in nz now), you can tuck it up behind it and with a little nip & tuck for the radiator support panel. it can sit right up. :)

Just like this:
67291

[Davezj]

yes i fitted mine without modifying the crashbar.

[frankoni]

im looking at fitting an after market intercooler, the HDI on was the one i was looking at. i found this fitting guide for the HDI one:- http://vr4power.com/

[Dannyb]

Hey guys ! thanks all for your help and suggestions, ill do some research on what youve all told me.
I actually talked to a guy i know the other day and he said not to mod it because they had a vr4 on the dyno a year or two ago and it performed 20%less than the stock one. thats all the info that i got but im guesing the reason it performed worse is because the intercooler that the guy put on was too big? would this be true ??

[Trotty]

It's true u will lose a little response. But on boost u will make more power. There are also fuel savings aswell reported from some.

[kiwigalant]

Was that comparing the estimated flywheel power lol?

[Dannyb]

True, well if i get a new intercooler that would would be the first mod on the car, other than a head unit. so even without on boost itll still benifit me and the car but just not as much ?
It's true u will lose a little response. But on boost u will make more power. There are also fuel savings aswell reported from some.

[Dannyb]

I dont know to be honest mate, thats all he told me. I wouldnt think that would be the case though haha
Was that comparing the estimated flywheel power lol?

[wintertidenz]

A larger intercooler will help keep the air flowing into the engine cooler. The effects of a larger intercooler are much more noticeable with higher levels of boost.

The cars will lose power over the years depending on how they are maintained anyway - the 20% loss was probably due to crappy oil, plugs, fuel or even a pod on the intake that's open to the engine bay heat.

[Dannyb]

A larger intercooler will help keep the air flowing into the engine cooler. The effects of a larger intercooler are much more noticeable with higher levels of boost.

The cars will lose power over the years depending on how they are maintained anyway - the 20% loss was probably due to crappy oil, plugs, fuel or even a pod on the intake that's open to the engine bay heat. Ok, so by putting a bigger intercooler on a car with no boost isnt going to hurt it ? just wont get the full effect ? by well maintained what do you mean ?
how much power would you loose in the long run ?
cheers mate

[wintertidenz]

It won't hurt it at all. I'm running standard boost with a 600x300x76 intercooler.

In terms of maintenance I'm meaning good oil every 5000km or so (ie. 5w30 full synthetic), good plugs and leads, fuel filter changed when it's needed etc.

It's hard to say how much power the car will lose over the years - it's all down to kilometres, maintenance, fuel etc - every engine is different.

[Dannyb]

It won't hurt it at all. I'm running standard boost with a 600x300x76 intercooler.

In terms of maintenance I'm meaning good oil every 5000km or so (ie. 5w30 full synthetic), good plugs and leads, fuel filter changed when it's needed etc.

It's hard to say how much power the car will lose over the years - it's all down to kilometres, maintenance, fuel etc - every engine is different.
Sweet mate, Thanks heaps
Cheers

[Davezj]

Just thought I would say this,
If a car is factory standard and you replace the intercooler for a much bigger shiney one. I would not expect to see any measurable gain in performance at all. A large intercooler is a supporting mod and will not gain you anything in its own right, but it will allow other power improving mods to work much better if they are done.
The factory intercooler is perfectly ok for a factory standard car, or with a mild boost increase only up to about 0.8-0.9 bar.

Well that is my opinion.

[Nick Mann]

I don't quite agree, Dave. Colder air = denser air. So at the same pressure you get more air, so more petrol and a bigger bang. This is true all the time, although I do very much agree that the benefits are more apparent with turbos that are working much harder.

[Trotty]

It's been dyno proven that torque figures increase with colder air. Replacing a stock intercooler that's more efficient will give gains even on a stock car. Only down side is the increased lag( albeit minor) through larger compressed volume.

[Dannyb]

I don't quite agree, Dave. Colder air = denser air. So at the same pressure you get more air, so more petrol and a bigger bang. This is true all the time, although I do very much agree that the benefits are more apparent with turbos that are working much harder.

Will this improve fuel economy or make it worse? has been said early on in this thread that some have said that it improves.

[Dannyb]

I don't quite agree, Dave. Colder air = denser air. So at the same pressure you get more air, so more petrol and a bigger bang. This is true all the time, although I do very much agree that the benefits are more apparent with turbos that are working much harder.

Will this improve fuel economy or make it worse? has been said early on in this thread that some have said that it improves.

[Trotty]

It will improve fuel numbers as cooler more dense air requires less throttle for the same power(in theory) and lower temps means more timing can be applied before knock also giving more power.
U can also run leaner as ur not requiring the fuel itself as a combustion chamber coolant.

[Nick Mann]

I'm not sure that the less throttle argument is a good one, regarding fuel usage. Assuming that you are running a stock air flow sensor then that should compensate. The other arguments are good though, but you need ecu control to take full advantage.

[Trotty]

Less throttle Less load means leaner mixture

[babasvr4]

Bit the bullet and have a Mishimoto J Line Intercooler heading down under.
Was looking for something shorter to allow more air flow in the the radiator and ultimately engine bay.
It's beefy at about 3 3/4" deep but happy to perform the necessary surgery to get it in.
Overall 30 x 7.5 x 3.75 or 760mm x190mm x 95mm core is 560mm with almost no change to height and depth.
Some good right-ups around on it's IAT drop, horsepower rating AND lifetime warranty...
68309
http://lib.store.yahoo.net/lib/yhst-62631657248580/MMINT-GEN4-10R-Engineering-Report.pdf

Now to get some silicone joiners!
J Line purchased in the US, landed total of USD $300

[babasvr4]

68405

Fits below the crash bar, have made up 2 "L" lengths about 330 x 80mm to hang the intercooler from the upper mounts.
Only requires 1 90* bend on battery side and 1 45* on drivers side, both 2 1/2"/63mm.
Bends to need to be generous in length say 4" plus either side, there are short bends around but wont reach.
Some new clamps and rubber backing for where it touches, this to avoid rubbing through the aluminum.
Made up a good length of new copper tube to replace the p/s oil cooler, taped in up high to the existing lines.
Was very surprised at how bad the oil looked , brown and thick, used some compressed air to completely flush it all out.
Will post more later today when its time to put the bumper back on...

[babasvr4]

68547
A lot easier than I though! All below the crash bar and lots of fresh air, at 95mm deep it was tight...
68548

[exevoowner]

Looks good :thumbsup:

[babasvr4]

Nice to.drive it now hot or cold, it feels ballsy!