The new project begins...

Heads, valves, pistons, rods, crankshaft, etc...

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Matt Monson
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Post by Matt Monson »

Tyler,
I've got the same feeling in my gut, and should probably listen to it. Plus I don't know how I would handle the oil return from the SC without damaging those gorgeous golden valve covers.

And yes, there are two Impreza project for sale down here right now. Check the classifieds on Pirates. They may have sold, but as of yesterday they both were still officially available...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
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bmxpunk
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Post by bmxpunk »

Yeah the oil return is the reason that I want wrx heads over the 2.5sohc heads. on the rs-t we just did, the kid brazed a bung onto his oil pain for oil return from his turbo.

Cool, I might come down sunday, I have to deliver a radiator to dzx.

I wont be driving the tempo this time though, HAHAHAHA
2011 Mini Countryman S All4
1970 Honda Ct90
2001 Forester S of Doom - mowed down by a Cummins
1994/5/6/01/02/03/04/06/07/08 Impregacy OUtback SS STi Type R money pit- NEW RALLYCAR!!
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Matt Monson
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Post by Matt Monson »

bmxpunk wrote:Yeah the oil return is the reason that I want wrx heads over the 2.5sohc heads. on the rs-t we just did, the kid brazed a bung onto his oil pain for oil return from his turbo.

Cool, I might come down sunday, I have to deliver a radiator to dzx.

I wont be driving the tempo this time though, HAHAHAHA
Well, for the SC, the return goes into the valve cover just short of the timing belt. The kit already has a boss tapped and placed on an Ej25 SOHC valve cover. Really, to install the kit, I just need to put cams into the heads, and drop the complete engine into the car and bolt up the kit. Should take me most of a day to get it done.

Call me when you are on your way down. I have to work for a few hours in the morning, but should be home midafternoon...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
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bmxpunk
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Post by bmxpunk »

sounds good. then you can se my (semi-hack) impreza
2011 Mini Countryman S All4
1970 Honda Ct90
2001 Forester S of Doom - mowed down by a Cummins
1994/5/6/01/02/03/04/06/07/08 Impregacy OUtback SS STi Type R money pit- NEW RALLYCAR!!
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Matt Monson
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Post by Matt Monson »

ok then. Just make sure you still have my number. If you don't still have it, PM me before the end of business and I will get it to you...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
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hackish
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Post by hackish »

People like to piss on the EJ25 as being a weak motor. I've successfully tuned them to 15 PSI and they've run for years without a problem. A lot of it is in the tuning. I certainly don't recommend cranking them that high but it is quite possible. If you pull out the innards and look at them they're really not that bad for being beefy.

-Michael
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Matt Monson
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Post by Matt Monson »

hackish wrote:People like to piss on the EJ25 as being a weak motor. I've successfully tuned them to 15 PSI and they've run for years without a problem. A lot of it is in the tuning. I certainly don't recommend cranking them that high but it is quite possible. If you pull out the innards and look at them they're really not that bad for being beefy.

-Michael
I concur. I am not going to turn the boost up on this one until I have some really solid EM to tune the fuel and timing. Tuning is everything...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
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555BCTurbo
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Post by 555BCTurbo »

Matt Monson wrote:
Tuning is everything...

+1
Nick

1987 Audi 4000CS quattro...soon to be 20VT
1994 Dodge Ram 2500 4x4 CTD, #11 plate, 30 psi, Scotty II intake, 4" exhaust
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Matt Monson
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Post by Matt Monson »

Image
the blower...
Image
The AWIC and valve cover tapped for oil return...
Image
And the front mounted heat exchanger...

Image

And the recipient...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
Top
bmxpunk
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Post by bmxpunk »

so you didnt use the rsra heads?

i am coming this friday and I cant wait to see it!!
2011 Mini Countryman S All4
1970 Honda Ct90
2001 Forester S of Doom - mowed down by a Cummins
1994/5/6/01/02/03/04/06/07/08 Impregacy OUtback SS STi Type R money pit- NEW RALLYCAR!!
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Matt Monson
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Posts: 2574
Joined: Sun Nov 09, 2003 8:24 pm
Location: Ghetto Garage, CO, USA
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Contact Matt Monson

Post by Matt Monson »

Doh! I leave for Utah Friday morning.

I am going to use Ej25 heads. Now the bottom end is in question. Closed deck Ej20G or Ej251 yet to e determined...
1974 Porsche 914 Cam Am Limted Edition AKA the Bumble Bee
1973 Porsche 914 2.0 l -Suby swap pending
1968 Porsche 911t survivor 47k original miles
2000 2.5RS daily driver.
1999 2.5RS w/ 50+ extra whp
Suby Hai!
Top
Legacy294
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Post by Legacy294 »

Although the 2.5 has more torque, the EJ20g would be a better starting point from an internals standpoint, as well as having the closed deck..

Once you get that S/C set up tuned, you'll be able to cram far more boost into the the "G" without worry..The guts are far better siuted for what you are doing.

Seen waaaay too many 2.5s (hundreds) fail without forced induction to trust them for long under boost. :D
'96 GF/STi Rally wagon, under construction

If it's mechanical, it WILL break...
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