Installing WRX front mount intercooler with 3" pipe to GQ

Hot side worked out perfect...


Now...don't laugh...the outlet from the ht18 is only 40mm....tiny!!! Then trying to ramp that up to a 3" pipe!!!

So after rotating the ht18 outlet elbow around I noticed the original cross over pipe has the exact bend I wanted and the cross over itself goes from 40mm up to 2". It fitted perfect, missed everything and ended up exactly where I wanted it, hugging the panel, missed everything and matches up to the 3" to 2" 45 degree reducer!!!

It will do for now until I can upgrade everything.

Anyways, I stuffed around for a couple of hours trying to move the wastegate down to allow the elbow to fit!!! I am confident in saying this cannot be done unless you weld on a plate as you just need an extra 10mm of plate.

So before I threw the wastegate through my shed window I decided to get a plate welded on during this week and all done.

Just need to mount the intercooler to the body and fit the grille back on which will be fun...lol

Haven't bolted the clamps on below photos yet, few little tweaks with the hoses but its working!!!!

Looking good mate, pity about the CRAP foter hahahahhaa

Good work AB!!

New plate done!!!

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Originally Posted by AB

New plate done!!!

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So why is this not running yet :p

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Originally Posted by nissannewby

So why is this not running yet :p

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Ask me this time tomorrow...lol

Too cold for the shed dude, it's icey as hell down here!!!

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Originally Posted by AB

Ask me this time tomorrow...lol

Too cold for the shed dude, it's icey as hell down here!!!

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With those sort ambient temps you could feed it some serious fuel :)

You need a potbelly in your shed AB.

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Originally Posted by nissannewby

With those sort ambient temps you could feed it some serious fuel :)

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Wastegate: for such a simple modification it's been a pita to be honest.

I'm also going to have to spend a bit of time bending that arm to make sure it not only fits but is correct placement for the actuation if that makes sense...

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Originally Posted by MudRunnerTD

You need a potbelly in your shed AB.

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Yeah man I have that searched saved in eBay and they are just fetching prices for shitty old ones that I just can't afford right now damn it.

I just rug up mate, it's not that bad but tonight is the coldest I have felt up here in a while..lol

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Originally Posted by AB

Yeah man I have that searched saved in eBay and they are just fetching prices for shitty old ones that I just can't afford right now damn it.

I just rug up mate, it's not that bad but tonight is the coldest I have felt up here in a while..lol

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That's cause it's Farking Snowing bloke!!!! Damn cold!! Yeah bad time to buy the pot belly, top dollar this time of year.

I am never adjusting a wastegate ever ever ever again!!!!

Getting that arm into the correct position in the right part of the actuation tension is a frigging nightmare!!!

Long story short you need to extend the arm 15 mm and put a new plate on.

Trial and error near killed me but its done!!!

So its running?

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Originally Posted by nissannewby

So its running?

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It's a beautiful thing!!!

All plumbed ready to go!!!


Matty, I need longer pressure hose from turbo to wastegate, wtf!!!!

I'm 20mm short as I've lowered it down a fair bit...lol

So I can't start it!!!!!!!!!!!!!!!!!

Bloody oath you can start it. Just watch your boost gauge.

It only needs to be small vac tube even some fuel line if you have some floating around. Just block it where it comes out of compressor outlet.

Awesome work Andy, reckon you'll get a drive in tomorrow?

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Originally Posted by nissannewby

Bloody oath you can start it. Just watch your boost gauge.

It only needs to be small vac tube even some fuel line if you have some floating around. Just block it where it comes out of compressor outlet.

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My fuel line is too big and I can't find any small clamps to atleast block the original hose.

How strong is the pressure?

Improvise!?????

I'm keen to gaffer tape my aerials and light bar and test this puppy out...lol

Winnie mate...100% tomorrow drivable worst case.

Sorted...lmao

The previous owner of the turbo used no clamps but had the hose cut exactly maximum fit inbetween the two barbs so I have no clamps unfortunately.

Anyways as much as this sux I need to head up to the house. My turn for kids!!!!!!

Tomorrow gents tomorrow 100%

How much pressure?? Boost = PSI = Pressure. 12lb about bud ;)

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Originally Posted by MudRunnerTD

How much pressure?? Boost = PSI = Pressure. 12lb about bud ;)

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Psi= Pounds per Square Inch.

So the less surface area inside the said hose/pipe etc the less pounds applied :). This is why you can get away with no clamps for things like boost gauges lines

Nice work AB, coming together well. . . . Time to start hack'n that grill :)

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Originally Posted by Rossco

Nice work AB, coming together well. . . . Time to start hack'n that grill :)

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Haha love this rossco. Now because of the forum, you don't need to be the dutiful neighbor and get dragged into helping when u don't want to. You can just check on progress on forum and if it's too much effort claim you never saw the ask for help! Haha

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Originally Posted by rusty_nail

Haha love this rossco. Now because of the forum, you don't need to be the dutiful neighbor and get dragged into helping when u don't want to. You can just check on progress on forum and if it's too much effort claim you never saw the ask for help! Haha

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Ha Ha, TOATS, kind of backfires when I need a hand tho. . . :(

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Originally Posted by Rossco

Nice work AB, coming together well. . . . Time to start hack'n that grill :)

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And a lot of hacking will be needed that's for sure!!!!

Engine on


No blow outs yet...lol

Time to drive!!!

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Originally Posted by AB

Engine on
No blow outs yet...lol

Time to drive!!!

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And.............

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Originally Posted by nissannewby

And.............

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It is now upside down and on fire

Ok good news and bad news..

Egts are a lot down, took it up a ridiculous long hill that I used to get 520 + and I got to 400, happy days and then it dropped back really quick, amazingly quick!!!

I have lost 4 pound of boost though, set at 9 and now I'm only getting 5. Checked everywhere and there are no leaks. I don't have any clamps on the wastegate hose do maybe that but speaking to Matty could very well be the ridiculous size piping and tiny turbo now so will clamp that, get it tuned up and should be good to go until I can upgrade!

Happy with the temps though and I have just won $100. My brother reckoned I would cook the engine going up Yarra glen hill to home, temps did not even move...lol

Does the waste gate actuator adjust ie can you unscrew the arm?

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Originally Posted by Ben-e-boy

Does the waste gate actuator adjust ie can you unscrew the arm?

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Yes you can and I think you might be on the money there too. I tried to not rotate it whilst modifying it and getting this on but it could of moved slightly.

Would adding extra 15mm to the rod itself put more pressure on the spring load itself hence the loss of pressure?

Yep, thinking about this more I don't think there's enough preload on the arm. I remember there was a whisker tension when I removed it.

Ill see what I can do during the week.

Is this what you are thinking Benny???

Yes.. add some more preload to it.

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Originally Posted by Ben-e-boy

Yes.. add some more preload to it.

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That means I have to take it off...sad...very sad panda!!!!

Does anyone know which direction moves the arm in or out?

Standing in front of the car looking parallel towards the arm is it clockwise or anticlockwise?

Wind it in. It will now be harder to attach to the waste gate or the arm is going to be shorter

I'm not even sure why I said it had an adjuster on the arm, it doesn't!!!

I'm going to have to take it off, carefully bend it to suit the right preload and try that again.

I'm almost positive this is the cause and to get this in the right spot is going to be a nightmare!

Almost tempted to cut it off and weld on a thread to adjust it perfectly.

Fun times ahead, once again!!!

For anyone wanting to know I just found out the correct preload tension is half a hole back.

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Originally Posted by AB

For anyone wanting to know I just found out the correct preload tension is half a hole back.

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So boost is up?