Ok we haven't kicked this around for a while. I have to jump in here with my 20 cents. The WRX 2.0 turbo engine may not be superior to our USA 2.2 turbo engine. The USA 2.2 is more closely related to it's little WRX 2.0 sister than to all of the weak cousin normally aspirated engines. They are both engineered from the ground up as turbo engines with internal goodies to strengthen and lubricate critical components. There are some differences.
One favorite difference is the double overhead cam 2.0 vs the single overhead cam of the 2.2. It is generally acknowledged the 2.0 DOHC can be made to rev higher. This is important if you plan to race. However, the 2.2 is ten percent bigger. This is important if you plan to race. The stroke is the same at 75 mm, but the EJ22 bore is 96.9 mm vs 92 mm in the EJ20. How much higher does that little 2.0 have to rev to offset the 10% size differential?
Head flow studies I have seen show the stock heads from the late 2.5 engines to be superior to the 2.2 heads, and the 2.2 heads superior to those in the 2.0. You can fit the 1995 thru 1999, Phase I, 2.5 heads to get double overhead cams if that's what you think you need or want. It's likely the performance increase from such a retrofit will be the result of the superior flow characteristics than the higher rev potential.
The 2.0 has a compression advantage off boost with 9.0, I think, against 8.0 for the 2.2, so the torque provided by the extra compression may offset the torque delivered by the greater displacement at low RPM, but the lower compression of the 2.2 should permit higher boost, and here is where the performance difference really comes down to it. The WRX uses a larger turbo with higher boost.
The EJ22 turbo engine is very nearly just a larger, detuned for the US market version of the WRX motor. Don't get rid of it for a smaller engine, work with it. The addition of a simple boost controller should deliver mild WRX power levels for a few dollars. If you want more power, coupled with proper fuel management, the BC-BF turbo engine closed deck design will permit a larger turbo and even more bang than the wilder WRX engines, for less buck.
The EJ22 is a direct descendant of the motor used to power the legendary 2.2 liter 22B cult car, generally acknowledged to be the wildest Subaru to ever live.
I would be interested to read opposing views.
Larry EJ22 Witherspoon
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
zZz <http://docs.yahoo.com/info/terms/> .
WRX 2.0 turbo vs USA 2.2 turbo
Moderators: Helpinators, Moderators
-
Ronnie Hast
WRX 2.0 turbo vs USA 2.2 turbo
Hi, we i Sweden doesn´t have the 2.2Turbo only the
2.0Turbo(both Legacy(Liberty) and Impreza) so my
question is: Is there a 2.2 or even 2.5 kit to mount
on my 2.0Turbo?
Thanks in advanvce: Ronnie
--- ssspoon@aol.com wrote: > Ok we haven't kicked
this around for a while. I
> have to jump in here with my
> 20 cents. The WRX 2.0 turbo engine may not be
> superior to our USA 2.2 turbo
> engine. The USA 2.2 is more closely related to it's
> little WRX 2.0 sister
> than to all of the weak cousin normally aspirated
> engines. They are both
> engineered from the ground up as turbo engines with
> internal goodies to
> strengthen and lubricate critical components. There
> are some differences.
>
> One favorite difference is the double overhead cam
> 2.0 vs the single overhead
> cam of the 2.2. It is generally acknowledged the
> 2.0 DOHC can be made to rev
> higher. This is important if you plan to race.
> However, the 2.2 is ten
> percent bigger. This is important if you plan to
> race. The stroke is the
> same at 75 mm, but the EJ22 bore is 96.9 mm vs 92 mm
> in the EJ20. How much
> higher does that little 2.0 have to rev to offset
> the 10% size differential?
>
> Head flow studies I have seen show the stock heads
> from the late 2.5 engines
> to be superior to the 2.2 heads, and the 2.2 heads
> superior to those in the
> 2.0. You can fit the 1995 thru 1999, Phase I, 2.5
> heads to get double
> overhead cams if that's what you think you need or
> want. It's likely the
> performance increase from such a retrofit will be
> the result of the superior
> flow characteristics than the higher rev potential.
>
>
> The 2.0 has a compression advantage off boost with
> 9.0, I think, against 8.0
> for the 2.2, so the torque provided by the extra
> compression may offset the
> torque delivered by the greater displacement at low
> RPM, but the lower
> compression of the 2.2 should permit higher boost,
> and here is where the
> performance difference really comes down to it. The
> WRX uses a larger turbo
> with higher boost.
>
> The EJ22 turbo engine is very nearly just a larger,
> detuned for the US market
> version of the WRX motor. Don't get rid of it for a
> smaller engine, work
> with it. The addition of a simple boost controller
> should deliver mild WRX
> power levels for a few dollars. If you want more
> power, coupled with proper
> fuel management, the BC-BF turbo engine closed deck
> design will permit a
> larger turbo and even more bang than the wilder WRX
> engines, for less buck.
>
> The EJ22 is a direct descendant of the motor used to
> power the legendary 2.2
> liter 22B cult car, generally acknowledged to be the
> wildest Subaru to ever
> live.
>
> I would be interested to read opposing views.
>
> Larry EJ22 Witherspoon
>
>
>
>
>
>
_____________________________________________________
Do You Yahoo!?
Ditt_namn@yahoo.se - skaffa en gratis mailadress på http://mail.yahoo.se
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
2.0Turbo(both Legacy(Liberty) and Impreza) so my
question is: Is there a 2.2 or even 2.5 kit to mount
on my 2.0Turbo?
Thanks in advanvce: Ronnie
--- ssspoon@aol.com wrote: > Ok we haven't kicked
this around for a while. I
> have to jump in here with my
> 20 cents. The WRX 2.0 turbo engine may not be
> superior to our USA 2.2 turbo
> engine. The USA 2.2 is more closely related to it's
> little WRX 2.0 sister
> than to all of the weak cousin normally aspirated
> engines. They are both
> engineered from the ground up as turbo engines with
> internal goodies to
> strengthen and lubricate critical components. There
> are some differences.
>
> One favorite difference is the double overhead cam
> 2.0 vs the single overhead
> cam of the 2.2. It is generally acknowledged the
> 2.0 DOHC can be made to rev
> higher. This is important if you plan to race.
> However, the 2.2 is ten
> percent bigger. This is important if you plan to
> race. The stroke is the
> same at 75 mm, but the EJ22 bore is 96.9 mm vs 92 mm
> in the EJ20. How much
> higher does that little 2.0 have to rev to offset
> the 10% size differential?
>
> Head flow studies I have seen show the stock heads
> from the late 2.5 engines
> to be superior to the 2.2 heads, and the 2.2 heads
> superior to those in the
> 2.0. You can fit the 1995 thru 1999, Phase I, 2.5
> heads to get double
> overhead cams if that's what you think you need or
> want. It's likely the
> performance increase from such a retrofit will be
> the result of the superior
> flow characteristics than the higher rev potential.
>
>
> The 2.0 has a compression advantage off boost with
> 9.0, I think, against 8.0
> for the 2.2, so the torque provided by the extra
> compression may offset the
> torque delivered by the greater displacement at low
> RPM, but the lower
> compression of the 2.2 should permit higher boost,
> and here is where the
> performance difference really comes down to it. The
> WRX uses a larger turbo
> with higher boost.
>
> The EJ22 turbo engine is very nearly just a larger,
> detuned for the US market
> version of the WRX motor. Don't get rid of it for a
> smaller engine, work
> with it. The addition of a simple boost controller
> should deliver mild WRX
> power levels for a few dollars. If you want more
> power, coupled with proper
> fuel management, the BC-BF turbo engine closed deck
> design will permit a
> larger turbo and even more bang than the wilder WRX
> engines, for less buck.
>
> The EJ22 is a direct descendant of the motor used to
> power the legendary 2.2
> liter 22B cult car, generally acknowledged to be the
> wildest Subaru to ever
> live.
>
> I would be interested to read opposing views.
>
> Larry EJ22 Witherspoon
>
>
>
>
>
>
_____________________________________________________
Do You Yahoo!?
Ditt_namn@yahoo.se - skaffa en gratis mailadress på http://mail.yahoo.se
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
-
Rod Grosvenor
WRX 2.0 turbo vs USA 2.2 turbo
Hello--I have a couple of questions that maybe you can answer. You seem to know quite a bit about the 2.2T; can you tell me more about the `92 NA 2.2? Is it a closed-deck motor? Does it have the oil spray set-up similar to the turbo? Is the head configuration the same? Are the pistons forged or cast? Any other similarities/differences would be greatly appreciated. This info will help me decide which direction to go in when I build my next motor-(this will be after I catch up on what I need to know about street-built, hi-po turbo motors). Anyone else please feel free to send any info that applies, also. Thanks again---ROD (AZ.)
----- Original Message -----
From: ssspoon@aol.com
To: BC-BFLegacyWorks@yahoogroups.com
Sent: Wednesday, September 19, 2001 129 AM
Subject: [BC-BFLegacyWorks] Re: WRX 2.0 turbo vs USA 2.2 turbo
Ok we haven't kicked this around for a while. I have to jump in here with my 20 cents. The WRX 2.0 turbo engine may not be superior to our USA 2.2 turbo engine. The USA 2.2 is more closely related to it's little WRX 2.0 sister than to all of the weak cousin normally aspirated engines. They are both engineered from the ground up as turbo engines with internal goodies to strengthen and lubricate critical components. There are some differences.
One favorite difference is the double overhead cam 2.0 vs the single overhead cam of the 2.2. It is generally acknowledged the 2.0 DOHC can be made to rev higher. This is important if you plan to race. However, the 2.2 is ten percent bigger. This is important if you plan to race. The stroke is the same at 75 mm, but the EJ22 bore is 96.9 mm vs 92 mm in the EJ20. How much higher does that little 2.0 have to rev to offset the 10% size differential?
Head flow studies I have seen show the stock heads from the late 2.5 engines to be superior to the 2.2 heads, and the 2.2 heads superior to those in the 2.0. You can fit the 1995 thru 1999, Phase I, 2.5 heads to get double overhead cams if that's what you think you need or want. It's likely the performance increase from such a retrofit will be the result of the superior flow characteristics than the higher rev potential.
The 2.0 has a compression advantage off boost with 9.0, I think, against 8.0 for the 2.2, so the torque provided by the extra compression may offset the torque delivered by the greater displacement at low RPM, but the lower compression of the 2.2 should permit higher boost, and here is where the performance difference really comes down to it. The WRX uses a larger turbo with higher boost.
The EJ22 turbo engine is very nearly just a larger, detuned for the US market version of the WRX motor. Don't get rid of it for a smaller engine, work with it. The addition of a simple boost controller should deliver mild WRX power levels for a few dollars. If you want more power, coupled with proper fuel management, the BC-BF turbo engine closed deck design will permit a larger turbo and even more bang than the wilder WRX engines, for less buck.
The EJ22 is a direct descendant of the motor used to power the legendary 2.2 liter 22B cult car, generally acknowledged to be the wildest Subaru to ever live.
I would be interested to read opposing views.
Larry EJ22 Witherspoon
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
zZz <http://docs.yahoo.com/info/terms/> .
ADVERTISEMENT
<http://rd.yahoo.com/M=194081.1566666.31 ... ?code=3225> Click Here!
<http://us.adserver.yahoo.com/l?M=194081 ... =849885832>
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
zZz <http://docs.yahoo.com/info/terms/> .
----- Original Message -----
From: ssspoon@aol.com
To: BC-BFLegacyWorks@yahoogroups.com
Sent: Wednesday, September 19, 2001 129 AM
Subject: [BC-BFLegacyWorks] Re: WRX 2.0 turbo vs USA 2.2 turbo
Ok we haven't kicked this around for a while. I have to jump in here with my 20 cents. The WRX 2.0 turbo engine may not be superior to our USA 2.2 turbo engine. The USA 2.2 is more closely related to it's little WRX 2.0 sister than to all of the weak cousin normally aspirated engines. They are both engineered from the ground up as turbo engines with internal goodies to strengthen and lubricate critical components. There are some differences.
One favorite difference is the double overhead cam 2.0 vs the single overhead cam of the 2.2. It is generally acknowledged the 2.0 DOHC can be made to rev higher. This is important if you plan to race. However, the 2.2 is ten percent bigger. This is important if you plan to race. The stroke is the same at 75 mm, but the EJ22 bore is 96.9 mm vs 92 mm in the EJ20. How much higher does that little 2.0 have to rev to offset the 10% size differential?
Head flow studies I have seen show the stock heads from the late 2.5 engines to be superior to the 2.2 heads, and the 2.2 heads superior to those in the 2.0. You can fit the 1995 thru 1999, Phase I, 2.5 heads to get double overhead cams if that's what you think you need or want. It's likely the performance increase from such a retrofit will be the result of the superior flow characteristics than the higher rev potential.
The 2.0 has a compression advantage off boost with 9.0, I think, against 8.0 for the 2.2, so the torque provided by the extra compression may offset the torque delivered by the greater displacement at low RPM, but the lower compression of the 2.2 should permit higher boost, and here is where the performance difference really comes down to it. The WRX uses a larger turbo with higher boost.
The EJ22 turbo engine is very nearly just a larger, detuned for the US market version of the WRX motor. Don't get rid of it for a smaller engine, work with it. The addition of a simple boost controller should deliver mild WRX power levels for a few dollars. If you want more power, coupled with proper fuel management, the BC-BF turbo engine closed deck design will permit a larger turbo and even more bang than the wilder WRX engines, for less buck.
The EJ22 is a direct descendant of the motor used to power the legendary 2.2 liter 22B cult car, generally acknowledged to be the wildest Subaru to ever live.
I would be interested to read opposing views.
Larry EJ22 Witherspoon
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
zZz <http://docs.yahoo.com/info/terms/> .
ADVERTISEMENT
<http://rd.yahoo.com/M=194081.1566666.31 ... ?code=3225> Click Here!
<http://us.adserver.yahoo.com/l?M=194081 ... =849885832>
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
zZz <http://docs.yahoo.com/info/terms/> .
-
Dave C
WRX 2.0 turbo vs USA 2.2 turbo
Thanks for this stuff Larry!
I know Mark just swapped his EJ22T for a EJ20, and his experience
has been very good. Seeing as he got the engine and everything for
a very reasonable price, and that his car is set up for racing, it
makes sense for him to seek the higher RPMs and power of that engine
at stock levels than our stock engines.
For everyone else, i can attest to the fact that the EJ22T has a ton
of very good traits, pretty much all of which Larry pointed out.
Most monster RSes are based on EJ22T swaps with bigger turbos and
lots of boost, and head swaps.
>From my stock engine, to where it's at right now, i've noticed a
huge difference in power and smoothness. Future additions of a
turbo-back 3" exhaust and Intercooler are sure to net some very
impressive gains.
Let us agree on one thing: Subaru engines rock!
------------------------ ---------------------~-->
The Nissan Sentra
Everything but compact
http://NissanDriven.com
http://us.click.yahoo.com/3vsIKC/txlCAA ... /XoTolB/TM
---------------------------------------------------------------------~->
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com
I know Mark just swapped his EJ22T for a EJ20, and his experience
has been very good. Seeing as he got the engine and everything for
a very reasonable price, and that his car is set up for racing, it
makes sense for him to seek the higher RPMs and power of that engine
at stock levels than our stock engines.
For everyone else, i can attest to the fact that the EJ22T has a ton
of very good traits, pretty much all of which Larry pointed out.
Most monster RSes are based on EJ22T swaps with bigger turbos and
lots of boost, and head swaps.
>From my stock engine, to where it's at right now, i've noticed a
huge difference in power and smoothness. Future additions of a
turbo-back 3" exhaust and Intercooler are sure to net some very
impressive gains.
Let us agree on one thing: Subaru engines rock!
------------------------ ---------------------~-->
The Nissan Sentra
Everything but compact
http://NissanDriven.com
http://us.click.yahoo.com/3vsIKC/txlCAA ... /XoTolB/TM
---------------------------------------------------------------------~->
To unsubscribe from this group, please send an email to:
BC-BFLegacyWorks-unsubscribe@egroups.com