wrx intake manifold swap?

Nate S · Post by **Nate S** » Sat Apr 12, 2003 10:11 pm

So I am trying to figure out how to get some bigger injectors, and have access to a whole wrx intake manifold ( w injectors , fuel rail ) so my question is has anyone tried this? since we cant run the wrx injectors and teh other easily available injectors because of our side feed issue I figured this would solve the issue by just converting over.

anyone done this or looked into it?

thanks,
Nate

entirelyturbo · Post by **entirelyturbo** » Mon Apr 14, 2003 1:16 am

I can see one reason why it won't work already, there is no place to mount our coilpack on a WRX intake manifold because the WRX has the coil-on-plug setup...

And I wouldn't be surprised if the difference in head design would not allow the manifolds to be interchanged...

Nate S · Post by **Nate S** » Mon Apr 14, 2003 4:40 am

ok good point on the coilpack issue, but that is fixable. dunno on the head design , which is the big question. maybe I will go to the junkyard tomorrow and see if I can tell a diff .
thx

nate

submannz · Post by **submannz** » Fri May 09, 2003 12:11 am

Yes I have done this with my car and everything worked fine, but if you are in America can't promise anything because they do so many things different to anyone else

Nate S · Post by **Nate S** » Fri May 09, 2003 12:50 am

You have a liberty turbo? If so you have an ej20 whereas we in the us got an ej22T , I am not sure of the difference yet, still deciding if I am going to try this or not, as I am getting ready to make some fuel rails for the subies anyway.

thx.
nate

-K- · Post by **-K-** » Sat May 10, 2003 12:11 am

What about the secondary throtle plates, just leave them open I guess? The TB is bigger I think but will the it plug into the Legacy harness, and run right? Does the WRX run high impeadance injectors? Getting a fuel rail for regular bosch injectors in the Legacy would be the way to do it.

Less to wory about and almost unlimited sizes of injectors.

Nate S · Post by **Nate S** » Sat May 10, 2003 12:49 am

that is the plan, I am in the design stage right now, I am making sure to not forget about the legacy guys in my products

Nate

-K- · Post by **-K-** » Sat May 10, 2003 8:45 pm

One thing about the WRX manifold is it would give you more room for a top mount. I forgot about that.

Nate S · Post by **Nate S** » Sat May 10, 2003 9:15 pm

that is one of the best points about doing it, dunno, stil may try it , if for nothing else just to know if it can be done or not.

subiekid · Post by **subiekid** » Sun May 11, 2003 3:37 am

there was a thread about this on nasioc, i think serious was researching it. ya might talk to him.

submannz · Post by **submannz** » Mon May 12, 2003 3:49 am

Didn't worry about the secondard throttle butterfly in the inlet manifold

subiekid · Post by **subiekid** » Tue Jun 17, 2003 12:22 am

you could use the intake for a wrx. lots of aftermarket ones for them. i woudl like this because my swap resulted in a funky intake.

subiekid · Post by **subiekid** » Tue Aug 05, 2003 4:26 am

anyone find out any info one this?

would i be able to use the tb off the turbo legacy manifold?

-K- · Post by **-K-** » Sun Sep 28, 2003 8:00 pm

Nate did you try the swap yet???

rsstiboy · Post by **rsstiboy** » Mon Sep 29, 2003 2:41 am

the only difference from your ej22t and our ej20t, is that ours comes out with twin cam (per head) and yours is single cam, the block should be the same as it is only the stroke that is increased for your 2.2ltrs.

subiekid · Post by **subiekid** » Mon Sep 29, 2003 6:03 am

this guy did it.

http://forums.nasioc.com/forums/showthr ... did=426987

he is using the ej22t block and a wrx manifld

vrg3 · Post by **vrg3** » Mon Sep 29, 2003 6:15 am

He doesn't say what heads he's using, though...

greggearhead · Post by **greggearhead** » Fri Nov 07, 2003 9:58 am

I don't suppose anyone has intake manifold gaskets from both engines they could compare?

I am a newbie - not familiar with the secondary throttles on the WRX manifold. Is it a resonance tuning chamber thing or for smoother response like in the Suzuki GSXRs, etc.

Thanks.

vrg3 · Post by **vrg3** » Fri Nov 07, 2003 4:24 pm

I think those are the tumble generator valves.

DOA · Post by **DOA** » Fri Nov 07, 2003 7:44 pm

Just a small point on the block differences, if its got a longer stroke then is the block the same length? I know VW blocks differ in deck heights on longer stroke engines, maybe the same for scoobies?

greggearhead · Post by **greggearhead** » Fri Nov 07, 2003 8:34 pm

VW Engines (air cooled ones) generally use different pistons for stock storke or longer stroke. The piston pin (wrist pin) height is different. Basically, if you have a piston for a crankshaft that has a stock stroke of 80mm, and you put a crankshaft in that has a stroke of 90mm, the piston will go 5mm further up in the bore and down in the bore - the 5mm up may have it sticking out of the cylinders and slamming into the head. Anytime I have run into changing stroke, new pistons were required.

Matt Monson · Post by **Matt Monson** » Mon Nov 10, 2003 5:53 pm

vrg3 wrote:He doesn't say what heads he's using, though...

He's using the EJ20 heads on that car...Fortunately Subaru's are like legos and you can do that!

But I can't offer any help on the question on the table. I am guessing the EJ20 manifold would fit, but can't tell you for sure.
My GF is visiting from out of town with her '04WRX. I'll see if I can take some measurements off of both cars before she leaves in a few days. Eventually, I will put v5 STi EJ20 heads on mine, but it would be nice to know if just the manifold will swap over anyways...

DOA · Post by **DOA** » Wed Nov 12, 2003 6:29 pm

Lol greg, I meant watercooled engines, never been near the aircooled ones what you say makes sense but never saw any different piston options for those so forgot you can do that

.
Could be interesting to try a 2.2 short block with my 2L UK spec heads if I ever blow it up, it could do with a bit more low end kick.

greggearhead · Post by **greggearhead** » Wed Nov 12, 2003 9:18 pm

Heh heh. DOA, most of my experience is in H20 VW, too. I have a set of forged 8 Valve pistons for a 1.8: 83mm bore, for 1.8 rods with 86.4mm stroke. Now, I picked up a 2.0 liter crank (92.8mm stroke) so those pistons won't work unless I use shorter rods (not usually a good solution).

There are 2.0 liter VW motors (82.5 x 92.

that are the same deck height as a shorter stroke 1.8 as well as the later ones which have a taller deck height and now the latest ones are shorter again. Rod length and wrist pin location change.

I am sure someone has done it, but it would be cool to see if a 2.5 crank would fit (clearancing required?) in the 2.2T bottom end. Some custom pistons to account for the longer stroke and you are good to go.

mTk · Post by **mTk** » Wed Nov 12, 2003 9:21 pm

The 2.5L phase 1 crank is supposed to be a direct drop into the 22t

MK

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wrx intake manifold swap?

wrx intake manifold swap?