supercharging the subaru justy

[XxhorizonxX]

just picked up a 91 subaru Justy 4wd 5 speed. well it goes awesome in the snow. only thing is its slower then dog shit. you think this supercharger would work on a 3 cylinder? it looks pretty small.

http://cgi.ebay.com/ebaymotors/MERCE...25595081QQrdZ1

or would this work better?

http://cgi.ebay.com/ebaymotors/Mini-...25603642QQrdZ1

[tkelly27]

lol, its a 1.2l, not a briggs and straton...
" Please don't ask me if this will work on a car engine, This is a Mini Supercharger." : D
what did the mercedes come off of? Will that engine hold up to boost? What about a turbo boxer engine transplant? If you wanna go S/C I think there were some off of volkswagens that would be just about right (off of 1.5l or something like that, just a bit larger than yours). Whatever you do... that will be one hell of a sleeper...

[XxhorizonxX]

from what ive been told. and i know the newer generation justy's are just suzuki swifts, but the 3 cylinder in the justy is supposedly the same motor as the 3 cylinder metro just a little bigger. there was also a turbo version of it in the chevy sprint turbo and pontiac firefly. the earlier justys were 1.0's and the new ones are 1.2's like mine. and ill admit they do look a lot alike. but thats just what ive heard. but anyways. there have been some justys ive seen on forums holding 10psi on stock internals and running megasquirt. i dont wanna go that far.

i was thinking maybe a vortech fmu and not running more then 6 or 7 psi on the supercharger. i am good at welding so making the bracket to hold the supercharger is no biggie at all. and belt and pulley shouldnt be real hard there are no accessories maybe i can put the supercharger where the ac is now and use the belt from it? i wanna make this as simple as possible and not fool with oil and coolant lines for ta turbo hence the supercharger. and my car is mutil port fuel injected so that helps to.

the supercharger is from the 4 cylinder mercedes like the slk230. i think it might be a little big but should run pretty cool for the boost i wanna run so might not even need an intercooler.

Quote:

Originally Posted by tkelly27 lol, its a 1.2l, not a briggs and straton... " Please don't ask me if this will work on a car engine, This is a Mini Supercharger." : D what did the mercedes come off of? Will that engine hold up to boost? What about a turbo boxer engine transplant? If you wanna go S/C I think there were some off of volkswagens that would be just about right (off of 1.5l or something like that, just a bit larger than yours). Whatever you do... that will be one hell of a sleeper...

[PBody]

I personally would go turbo on your Justy. I think turbos are easier to fit and install in a custom application. If you are a good welder, why not make a manifold for a turbo? Find a turbo from a Isuzu Impulse or use one turbo from a twin turbo Stealth.

Is your Justy TBI or MPI?

[myplasticegg]

www.teamswift.net there is some stuff on there about it. some peole are making OK power NA with the 3cyl. like 70whp... that's quite a bit for one litre

[XxhorizonxX]

well i dont wanna fool with turbo lines and such. and plus hey would look unique with a little supercharger sittin there. plus dunno what type of spool only 3 cylinders would make on a turbo but old turbo sprints had this motor if im being told right in them so a turbo and manifold and all might not be hard to find if i dont make one which i might if i cant get a hold on a smallish supercharger cant be to big cause it might not turn it good enough to make the boost i want. but ive also read these things can wind to 9K rpms. the car is multi port injected with 3 injectors.

Quote:

Originally Posted by PBody I personally would go turbo on your Justy. I think turbos are easier to fit and install in a custom application. If you are a good welder, why not make a manifold for a turbo? Find a turbo from a Isuzu Impulse or use one turbo from a twin turbo Stealth. Is your Justy TBI or MPI?

[PBody]

You are lucky that you have MPI. How many valves is yours? Do you have a pic of the engine? Sounds like the head is different from the Metro cylinder head.

BTW: My screen name is M3 on teamswift.net.

[XxhorizonxX]

its a 9 valve motor. its 3 valves per cylinder. i was told the motor is the same and that the turbo manifold from a chevy sprint turbo will work. but the head and motor looks exactly the same to me. i dont have a pic of it but ill try and find one. i have tried researching and ultimate subaru message board are the ones that told me. i been trying to research the swifts but havent found anything on there forums about it. but the newer model mark 3 justys are the same car as a swift and are awd. hey why dont they use the newer justys for a 4wd donor for the swifts then? i hear a cultus GTi (swift GTI in the us) AWD is really rare.

wow you turbocharged your 3 cylinder metro? lol thats awesome.
but the newer justys look almost exactly like your car. how fast is it?

this car is just like mine...... scroll down and you can see the motor. looks just like a metros.

and see how the airbox looks just like a mark one gti?

http://www.cardomain.com/ride/794363

Quote:

Originally Posted by PBody You are lucky that you have MPI. How many valves is yours? Do you have a pic of the engine? Sounds like the head is different from the Metro cylinder head. BTW: My screen name is M3 on teamswift.net.

[PBody]

The 3 cyl Chevy/Geo engine (G10) was only offered as a 6 valve SOHC from 85-2001. The 85-88 Chevy Sprint uses a different SOHC cylinder head than the 89-2001. The 86-88 Sprint Turbo and 89-91 Canadian Turbo 3 cyl.were the only ones offered with MPI. All other fuel injected G10's were TBI. All the G10 engine blocks are basically the same from 85-2001.
It is possible that your Justy uses the same engine block as the Metro. If so, it is a really durable and strong short block. I am just curious what makes it a 1.2L? Bigger bore? As for the turbo manifold and set up from a Sprint fitting your 9-valve head, I doubt it will. You may be able to swap the head with the 6-valve head from the 86-88 Sprint Turbo.

As for the AWD Cultus. It was only offered over seas and was never available in North America. Maybe your Justy uses the Cultus drivetrain? Are there any body panels that are the same as the Metro/Swift?

[XxhorizonxX]

hmm the engine is designated as a GL12 and the older ones were designated as a GL10. this is getting interesting. i swear though that head and block looks identical. distributor in same place. and like i said the airbox is in the same place as an early swift gti from overseas. i bet its the same motor with a 9 valve instead of a 6 valve head. hey i bet that would help you out if you could fit the 9 valve head on your metro? better flow.

this awesome though. i wonder if gti rear disks would work on my car? i dunno due to the awd but hmm its interesting. maybe i might have some more options for suspension and brakes now.

if the manifold doesnt fit maybe ill try to locate a 6 valve head and go from there. or heck grab a whole turbo motor from a sprint turbo or firefly turbo.

as for the 1.2 if im not mistaken its the bigger bore that makes it a 1.2 liter.

and as for the awd i bet it does use a cultus drivetrain as well. hey maybe this gives you options 2. if the floorpans are the same grab yourself a justy and cut out the floorpan and steal the awd heh.

as for body panels. my car doesnt look anything like a swift on the outside.
on the other hand the newer justy's which they dont bring here anymore. are almost identical to your car. you could swap over the whole body to yours.

Quote:

Originally Posted by PBody The 3 cyl Chevy/Geo engine (G10) was only offered as a 6 valve SOHC from 85-2001. The 85-88 Chevy Sprint uses a different SOHC cylinder head than the 89-2001. The 86-88 Sprint Turbo and 89-91 Canadian Turbo 3 cyl.were the only ones offered with MPI. All other fuel injected G10's were TBI. All the G10 engine blocks are basically the same from 85-2001. It is possible that your Justy uses the same engine block as the Metro. If so, it is a really durable and strong short block. I am just curious what makes it a 1.2L? Bigger bore? As for the turbo manifold and set up from a Sprint fitting your 9-valve head, I doubt it will. You may be able to swap the head with the 6-valve head from the 86-88 Sprint Turbo. As for the AWD Cultus. It was only offered over seas and was never available in North America. Maybe your Justy uses the Cultus drivetrain? Are there any body panels that are the same as the Metro/Swift?

[PBody]

Hmm. It is hard for me to tell if the Justy's 9 valve head is similar to the 86-88 Sprint 6 valve head. I have never seen the Sprint head up close. It sure is way different from my 93 G10 head.

As for my turbo, it goes great. Having boost is a lot of fun. I can keep up with my wife's 2000 Z-24.

I do notice the air box, but the odd part is the Spint turbo's use MAF. Is your's speed density?

[XxhorizonxX]

here is a better picture of things. this is just like my car cept mines a 2 door model.

http://subarujusty.proboards20.com/i...ead=1123455841

i swear i cant tell any difference between it and a sprint motor. kinda freaky. i think that the newer ones like yours had a smaller valve cover is why it looks different.
the airbox i was referring to was the first gens with the 16 valve motor. the airbox looks identical. and no my cars a mass air flow car. you just cant see it in those pics. maybe the ones above will be clearer.

Quote:

Originally Posted by PBody Hmm. It is hard for me to tell if the Justy's 9 valve head is similar to the 86-88 Sprint 6 valve head. I have never seen the Sprint head up close. It sure is way different from my 93 G10 head. As for my turbo, it goes great. Having boost is a lot of fun. I can keep up with my wife's 2000 Z-24. I do notice the air box, but the odd part is the Spint turbo's use MAF. Is your's speed density?

[PBody]

That link won't let me see the pics. I think you have to be a member to see the pics.

[XxhorizonxX]

really? im not a member and it lets me? wtf? lol

Quote:

Originally Posted by PBody That link won't let me see the pics. I think you have to be a member to see the pics.

[PBody]

Pics are working today.

It does look a lot like the 86-88 Sprint engine. Especially the intake manifold. Hmmm.
If the exhaust manifold is the same, you could pick up an upgrade turbo and custom made manifold from www.turbinetech.ca