ej20k intake manifold on a ej20g?

xtian · 03-24-2006, 10:47 PM

im thinking about doin this so i can have more options on turbo, intake, and tmic i can use.. i just wanted to know how much is involved.. i know its a direct swap.. fuel rails will bolt up.. intake would go under the manifold , im keeping my COD and it has its idler control motor..etc..

..... BUT, im worried if i upgrade and decide to run a VF series turbo.. i wonder if my ecu would be happy.i dont want my car to run like crap..

my 16g is cracked so im thinking about alternative ways.. since i can seem to find a 16g around.

let me know.. advice on this matter would be greatly appriciated. thanks

---christian

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xtian · 03-25-2006, 01:21 AM

anyone ?

kingsubi · 03-25-2006, 11:08 AM

This is a good swap. The VF23 or 28 would be similar to the 16G but you could go up to a VF22 without issues on the stock ecu (assuming its a ver2 sti and not a wrx).

Although you have some more options for TMIC and turbos the EJ20g manifold flows very well - and the heads are depending on that. I have put a ej20K engine in my car but have left the eg20g manifold. I get too much flow into the ver4 heads and blow out the spark at full timing.

Maybe a little P&P of the manifold would not hurt before tossing it on?

xtian · 03-25-2006, 01:11 PM

hmm.. so you mean you slapped on a ej20g manifold on ej20k engine and you had too much flow?

--its just a wrx.. not an sti.. so what tubro do u suggest?

--if i go for the ej20k manifold.. would i need a new powersteering pump? to clear the intake tube that goes under the manifold?

thanks

kingsubi · 03-25-2006, 03:24 PM

I mean that at WOT I blow the spark out (copper plugs) b/c my manifold seems to push more air through than the heads can handle (in comparison to my old engine - being rebuilt right now). This is based on my ej20g being the sti 555 though.

For the wrx a vf23 or vf28 would be perfect, the vf22 or vf34 would be a good upgrade but you may need bigger injectors for those turbos and some EM. So maybe stick with either if the first two.

You will need a new pump - the GD WRX one will work fine.

03-24-2006, 10:47 PM	#1
xtian Scooby Specialist Member#: 93248 Join Date: Aug 2005 Chapter/Region: MWSOC Location: Chicago Vehicle: 95 20g powered gc8 PPG'd yO! & is250 AWD	ej20k intake manifold on a ej20g? im thinking about doin this so i can have more options on turbo, intake, and tmic i can use.. i just wanted to know how much is involved.. i know its a direct swap.. fuel rails will bolt up.. intake would go under the manifold , im keeping my COD and it has its idler control motor..etc.. ..... BUT, im worried if i upgrade and decide to run a VF series turbo.. i wonder if my ecu would be happy.i dont want my car to run like crap.. my 16g is cracked so im thinking about alternative ways.. since i can seem to find a 16g around. let me know.. advice on this matter would be greatly appriciated. thanks ---christian * Registered users of the site do not see these ads.

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03-25-2006, 01:21 AM	#2
xtian Scooby Specialist Member#: 93248 Join Date: Aug 2005 Chapter/Region: MWSOC Location: Chicago Vehicle: 95 20g powered gc8 PPG'd yO! & is250 AWD	anyone ?

03-25-2006, 11:08 AM	#3
kingsubi Scooby Specialist Member#: 19239 Join Date: May 2002 Chapter/Region: NESIC Location: QC / ME Vehicle: 2011 WRX SWP	This is a good swap. The VF23 or 28 would be similar to the 16G but you could go up to a VF22 without issues on the stock ecu (assuming its a ver2 sti and not a wrx). Although you have some more options for TMIC and turbos the EJ20g manifold flows very well - and the heads are depending on that. I have put a ej20K engine in my car but have left the eg20g manifold. I get too much flow into the ver4 heads and blow out the spark at full timing. Maybe a little P&P of the manifold would not hurt before tossing it on?

03-25-2006, 01:11 PM	#4
xtian Scooby Specialist Member#: 93248 Join Date: Aug 2005 Chapter/Region: MWSOC Location: Chicago Vehicle: 95 20g powered gc8 PPG'd yO! & is250 AWD	hmm.. so you mean you slapped on a ej20g manifold on ej20k engine and you had too much flow? --its just a wrx.. not an sti.. so what tubro do u suggest? --if i go for the ej20k manifold.. would i need a new powersteering pump? to clear the intake tube that goes under the manifold? thanks

03-25-2006, 03:24 PM	#5
kingsubi Scooby Specialist Member#: 19239 Join Date: May 2002 Chapter/Region: NESIC Location: QC / ME Vehicle: 2011 WRX SWP	I mean that at WOT I blow the spark out (copper plugs) b/c my manifold seems to push more air through than the heads can handle (in comparison to my old engine - being rebuilt right now). This is based on my ej20g being the sti 555 though. For the wrx a vf23 or vf28 would be perfect, the vf22 or vf34 would be a good upgrade but you may need bigger injectors for those turbos and some EM. So maybe stick with either if the first two. You will need a new pump - the GD WRX one will work fine.