Alecb97

Subaru Gf6 Engine Swap

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I'm just wondering if I can put a 2litre turbo ej20 into my subaru gf6 it has a standard 1.8 non turbo atm and I want a gf8 but cant afford it so I wanna make this a gf8 as much as i can, will it fit in my engine bay and what will I need to change apart from complete engine and gearbox

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Posted (edited)

Ecu, engine wiring harness, fuel pump, possibly the rear diff and suspension/brakes. Then there's stuff like boost control solenoid that your car wouldn't have that you'd need.. 

Edited by swamp

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You'll also need turbo subframe, exhaust, and you'll find that the water pumps are different between the two, so you'll need the turbo water pump if it doesn't come with your engine that you're buying. This is just info I've got from a colleague who's done it, during smoko and all I can remember without making a written list. Hope it helps and good luck. 

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It's not worth doing. You'll have to cert it as well.

 

If you can't afford a GF8, then you can't afford to EJ20T-swap a GF6.

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yeah soz : we're not here to be the fun police but major headaches no matter how much you love your car

 

also welcome to ClubSUB

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You may be best to buy a cheap one or a shell. 

There's one in Dunedin atm for $800. So less than the cost of a cert. 

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OP could potentially get away without a cert... 

But yes unfortunately it would be cheaper and easier to buy a wrx than do your swap...

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9 hours ago, swamp said:

OP could potentially get away without a cert... 

But yes unfortunately it would be cheaper and easier to buy a wrx than do your swap...

 

How exactly do you propose getting away with a larger engine and a turbo without a cert?

 

Just swap the N/A 1.8L in each time you go for a WoF?

 

I mean yeah you could get a sloppy as WoF guy who failed to notice it was a turbo, but you also have to consider the vehicle would be 100% uninsurable in that state.

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pops in plate 1.8 FWD

 

see's EJ20 Turbo & AWD

 

/meh Subaru do weird s***

 

you're also expected to install Driveshaft Hoops as well, entire driveline, wiring (wanna pull dash out at same time?

 

yeah everything will bolt in, the % increase rule applies

 

have a read of the VIRM or car hobby Manual maybe :P (addressed to everyone here not just OP)

 

https://vehicleinspection.nzta.govt.nz/virms/in-service-wof-and-cof/general

 

Quote

Fitting of or modification to:

LVV certification is not required provided that:

Substitution of engines

  • when compared with the OE engine, the replacement engine:
    • is of the same or less cubic capacity, and
    • has equal or less weight, and
    • uses the same fuel (petrol, diesel, LPG, CNG), and
    • uses the same unmodified attachment points and system (i.e. bolts-in), and
    • uses the same family of block and cylinder head from the same vehicle manufacturer, and
    • the block has the same number of cylinders arranged in the same configuration, and
    • the head has the same number of valves and camshafts, and
    • meets the requirements of minor modifications detailed below, and
    • when the minor modifications have been taken into consideration the total power or torque increase is no more than 20% over the OE engine specification.

 

even if it is already AWD

 

Quote

Gearbox substitution

  • the OE gearbox cross-member has not been heated, cut or welded,
  • the OE gearbox cross-member mounting to the OE body or chassis members is unchanged,
  • no replacement gearbox cross-member is used,
  • the OE driveshaft(s) is unmodified,
  • no substantial modifications have occurred to the floor or gearbox tunnel area, other than provision for gear-shift mechanism,
  • the braking system is not modified or changed, including the brake pedal.

 

OE means Original Equipment (regardless of if its from another subaru substituting Turbo parts for Non Turbo is not factory replacement)

 

Hello @BLAZD (aka R's Garage 10 years later 100k deep with 1jZ swap & the Rota Ferrari destroys it with 15k still only worth $500

 

shorter story would also be talk to your Local cert guy before you start wrecking you car eh :P

 

https://www.lvvta.org.nz/

 

and yes even a Manual conversion USING factory parts technically requires a cert as soon as you MOD or SWAP the Brake Pedal, everything else is fine

 

that one pedal is a rather crucial part of your safety & there are numbtys that cant not cross thread things aye

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in short, it won't happen unfortunately. There's no technical issues in doing it, everything you'd need would literally just bolt on in, but you'll spend more time and money than just buying a GF8 outright. Save some money, just buy the car.

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Some people @boon will go to great lengths, plate and tag, changing rear windscreens, plenty of dodgy folk love early model 90s Subarus, plenty of dodgy wof/bro deals out there despite the recent crackdown. In short, the only way to do it without a cert is to go to great lengths to circumvent the law. 

 

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38 minutes ago, swamp said:

Some people @boon will go to great lengths, plate and tag, changing rear windscreens, plenty of dodgy folk love early model 90s Subarus, plenty of dodgy wof/bro deals out there despite the recent crackdown. In short, the only way to do it without a cert is to go to great lengths to circumvent the law. 

 

 

Kinda stupid though isn't it, they should just buy one that Mr. Subaru put a turbo on at the factory.

 

List of ways to get a turbo Subaru, sorted by cost:

 

-Buy a turbo subaru

-Swap turbo bits into a N/A Subaru, then get a cert

-Swap turbo bits into a N/A Subaru, then go to the trouble of all sorts of dodgy s*** like swapping tags from a real turbo Subaru that you should have just bought in the first place.

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5 hours ago, Joker said:

and yes even a Manual conversion USING factory parts technically requires a cert as soon as you MOD or SWAP the Brake Pedal, everything else is fine

 

that one pedal is a rather crucial part of your safety & there are numbtys that cant not cross thread things aye

Depends on how you read the rule. Likely written like that so people don't try to sneak around it and argue geometry etc.

 

My last car never needed a cert for auto manual conversion, I asked and even took it in. The pedal was OEM mount points and all travel and actions the same so no issues. only thing altered was 5 holes to mount the bolts through for clutch master cylinder.  It got certed later for big brakes and adjustable suspension, swapped steering rack etc. Then it got written on a cert plate as 5 speed, but then followed by a cage and well after that not really anything left other than the body.

 

 

Either way swapping s*** to 4wd and turbo is a pain in the arse, Subaru love to have wiring different between models so even that s***storm isn't worth it unless you have a trashed shell on your existing WRX and then $600 extra for a cert is nothing compared to scrapping the WRX. 

 

If you want to do it to learn stuff then go for it but in no way will you save money.

Reshelling cars is good fun if you have the time and tools. Tools are very very important to make things go smoothly and torque wrenches aren't optional if you are starting out. Rattle guns (electric impact) are helpful to remove things that are old and rusted. WD40 and brass wire brush everything that comes undone early on too.

 

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Too true @boon plus if they're not too skilled then some things won't run properly/fail prematurely too. I guess some people just have hardly any money for whatever reason but have to have a turbo Scooby at any cost.

 

Probably best/cheapest option is for OP to buy a WRX that has a few (cheap/easy) issues to fix, to be honest that's what I did, I looked for one that was cheap and pretty stock, and owing the bank 3k sounded better than 10-15k at the time. Plus @Alecb97 if you find one that has issues that arent too complex you can always use clubsub YouTube etc plenty of advice on the net how to fix stuff. Hopefully you get something good! 

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& PS : there is a NA > Turbo build going here

 

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