What is an EJ20G? - Page 2

i_c_the_light · 03-30-2009, 03:01 AM

Quote:

Originally Posted by RealDealTarheel

^^This, I don't think even Subaru really has a firm grasp of which motor they put in which car, much less someone in the states buying front clips and tearing down motors.

I'd say they decided much like the same way Japanese car manufacturers choose model names: throw random words into a vacuum cleaner and put it into reverse.

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spazmoo · 03-30-2009, 01:57 PM

Quote:

Originally Posted by Flat4TW

why cant your friend do the search himself? if hes engine is fine stick with it until it dies... if he got the dough go for either an ej207 or ej257 build.

my friend doesn't have the patience to do the search, and i am always interested in doing a little bit of research. His oil line to his turbo was leaking and he ended up running out of oil. He says it runs real rough now and he already had hopes of putting a stronger engine in. I did a search initially for the EJ20G and didn't find much concerning why so many people liked it. All I found were mods and such.

94 GT · 03-31-2009, 02:54 PM

the way to find a closed or open deck blocks are to look down in front of the starter hump on the engine block and look for the casting lines with 2 little nubs sticking up the open deck ones are smooth!!!

spazmoo · 03-31-2009, 03:43 PM

Quote:

Originally Posted by 94 GT

the way to find a closed or open deck blocks are to look down in front of the starter hump on the engine block and look for the casting lines with 2 little nubs sticking up the open deck ones are smooth!!!

a picture would seriously help.

RallyColtTurbo · 03-31-2009, 05:09 PM

Matt Monson · 03-31-2009, 06:27 PM

Quote:

Originally Posted by RallyColtTurbo

Another tell is the crosshatching you can barely see on the hollow "tube" where the head bolts run into the block, which is directly below where the black coolant line is bolted down in the foreground of the above picture.

Also, there are multiple casting molds of the closed deck blocks. I've seen them both with and without crosshatching on the mating line of the block halves directly above where the crank sensor bolts down.

spazmoo · 04-01-2009, 11:22 PM

wow, those pictures are perfect. Thank you so much.

I had a long chat with my friend and he said he was only looking for horsepower in the 350-450 horsepower range. He said he wanted that much power to the wheels. Is 25% a good number to use to calculate loss of efficiency through drivetrain? If the EJ257 block is stout to those numbers, I will tell my friend that he is wasting his money.

Hareball · 04-02-2009, 12:19 AM

I'm in kind of the same boat as far as wondering wtf an EJ20K is, I recently purchased a 1998 WRX STi Type-R coupe w/ an ej20k and while I know a bit about ej205/255 engines I'm slightly befuddled by my new ej20k.

RallyColtTurbo · 04-02-2009, 12:53 AM

EJ20K is the evolution of the EJ20G. Heads are the main difference. They switched from a HLA (hydraulic lifter) under the cam bucket on the EJ20Gs to solid shim adjusted bucket. This allowed the engine to rev higher reliably. Some versions have the shims under the bucket where they cannot be "spit" out, for one more level of reliability. Cams are generally "hotter" on the EJ20Ks also.

The EJ20K was the last of the phase 1 motors to go into the Impreza. Phase 2 was a minor block redesign with the biggest change being moving the crankshaft thrust surface from the center (#3) journal to the rear (#5) journal. Phase 1 motors end with a letter (EJ20G, EJ25D, etc.) while phase 2 motors end with a number (EJ205, EJ251, etc).

sense of nature · 04-02-2009, 01:16 AM

As Tony says G stands for GGGGGGGGggrrrrrrrrrrreeeeaaaaaat ! IMO anyway

adbramsay · 04-04-2009, 02:26 PM

Quote:

Originally Posted by scby rex

www.rogerclarkmotorsport.co.uk/shop_detail.asp?productID=1036
EJ20 closed-deck block is one of the strongest Scooby starting points around and one of that was equipped with oil squirters to aid pistons cooling. Closed-deck blocks are the strongest blocks of Subaru and endure high boost and high horse power (700+hp). Heres a pic of a jdm ver7 ej207 and a ej20g.

are you sure thats an ej207 on the left? that doesnt look anything like my motor and i have a jdm ver 7 sti limited.

Matt Monson · 04-04-2009, 02:40 PM

There's a pretty short list of Subaru engines that used a semi-closed deck block...

adbramsay · 04-04-2009, 03:38 PM

ej207, ej208, and the ej257. and i think that the motor on the right is not the ej20g but in fact the ej22 motor from the 22b, it used a closed deck block with ver 4 sti heads. that motor was crazy!!! IMO I dont think that there was a better 2.0-2.5 litre turbo motor ever made from the factory.

RallyColtTurbo · 04-04-2009, 03:48 PM

Quote:

Originally Posted by adbramsay

.........and i think that the motor on the right is not the ej20g but in fact the ej22 motor from the 22b, ...........

Oil squirters indicate it's most likely a Legacy motor. Either USDM EJ22T or EJ20G. (I'm guessing 20G, from the bore size) I'm not sure if the early STIs/RAs still had the squirters.

EJ22G from the 22B did not have oil squirters.

I'm sure Matt will speak up if I missed anything.

94 GT · 04-04-2009, 07:10 PM

Quote:

Originally Posted by Matt Monson

Another tell is the crosshatching you can barely see on the hollow "tube" where the head bolts run into the block, which is directly below where the black coolant line is bolted down in the foreground of the above picture.

Also, there are multiple casting molds of the closed deck blocks. I've seen them both with and without crosshatching on the mating line of the block halves directly above where the crank sensor bolts down.

The cross hatching on the front were the block halves meet! Are they STi or RA motors??? my Ej22 closed deck block did'nt have them but my STi Ej20G block has them! was that a way of denoting higher from lower performance Engines at the factory????

scby rex · 04-04-2009, 07:53 PM

Yes the pic I posted has a ej207 ver7 on the left and a eg20g on the right. 100% sure as a friend is building the G.

Matt Monson · 04-04-2009, 08:14 PM

Quote:

Originally Posted by 94 GT

The cross hatching on the front were the block halves meet! Are they STi or RA motors??? my Ej22 closed deck block did'nt have them but my STi Ej20G block has them! was that a way of denoting higher from lower performance Engines at the factory????

The Ej22T's don't have it.

I've only ever seen it on 1995 STI Ej20G blocks. All of the ones I've seen earlier than 1995 that were closed deck didn't have it either.

Oil squirters have nothing to do with STi engines. In fact, Reddevil has even confirmed that he's found them on open deck Ej20H blocks.

suberdave · 04-04-2009, 09:21 PM

Quote:

Originally Posted by Matt Monson

Oil squirters have nothing to do with STi engines. In fact, Reddevil has even confirmed that he's found them on open deck Ej20H blocks.

i have a EJ20H Block that has oil squirters...

it is nothing special...

-=Suberdave=-

94 GT · 04-07-2009, 08:10 PM

yeah my 4A-GE toyota non torbo or supercharged has then too!!! it is a good idea though keep that Detionation away buy keepin them kool!! (I don't know how much it would actually help detionation but good lubing anyways!!

ncarn8 · 04-08-2009, 04:59 AM

i closed the oil squirters up on both my builds. Runs fine, im more interested in bearings getting oil at 8200rpm than pistons get arbitrarily splashed

Matt Monson · 04-08-2009, 08:42 AM

Quote:

Originally Posted by ncarn8

i closed the oil squirters up on both my builds. Runs fine, im more interested in bearings getting oil at 8200rpm than pistons get arbitrarily splashed

Exactly. I suspect Subaru drew the same conclusion since there are no squirters on a 22B.

adbramsay · 04-08-2009, 12:48 PM

i know kinda off topic and am sorry for hijacking the thread but as far as i can tell you guys seem to know the most about jdm engines on this site. what in order are the top 5 strongest?

afaik they are

1) ej22g (22b)
2) ej207 (ver 7+ sti)
3) ej208 (b4/gtb legacy)
4) ej20k (ver 4+ sti)
5) ej20r (98 gtb)

spazmoo · 04-09-2009, 10:05 AM

the hijack works in my favor. I want to be able to tell my friend about the strongest blocks we have.

94 GT · 04-09-2009, 08:12 PM

do the oil squirters run off the crank main??? that is probly the earlier turbo engines burned through rod bearings!! THAT Happened to my 22T and I think that it is starting on my STi tooo!!! (Ihope not) what do you have to do to block tham (if that in fact will bring better crank pressure??

scby rex · 04-09-2009, 08:33 PM

Quote:

Originally Posted by adbramsay

i know kinda off topic and am sorry for hijacking the thread but as far as i can tell you guys seem to know the most about jdm engines on this site. what in order are the top 5 strongest?

afaik they are

1) ej22g (22b)
2) ej207 (ver 7+ sti)
3) ej208 (b4/gtb legacy)
4) ej20k (ver 4+ sti)
5) ej20r (98 gtb)

Why would you have the open deck blocks in 2nd and 3rd?

03-31-2009, 05:09 PM	#30
RallyColtTurbo Scooby Specialist Member#: 16819 Join Date: Mar 2002 Chapter/Region: SCIC Location: Lake Elsinore, CA	Last edited by RallyColtTurbo; 03-31-2009 at 05:18 PM.

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03-31-2009, 02:54 PM	#28
94 GT Scooby Newbie Member#: 193676 Join Date: Nov 2008 Location: Whitby ont Canada Vehicle: 94 legacy GT silver (grey soon!!)	the way to find a closed or open deck blocks are to look down in front of the starter hump on the engine block and look for the casting lines with 2 little nubs sticking up the open deck ones are smooth!!!

04-01-2009, 11:22 PM	#32
spazmoo Scooby Newbie Member#: 140183 Join Date: Feb 2007 Location: Goldsboro, NC Vehicle: 2005 Legacy GT OBP	wow, those pictures are perfect. Thank you so much. I had a long chat with my friend and he said he was only looking for horsepower in the 350-450 horsepower range. He said he wanted that much power to the wheels. Is 25% a good number to use to calculate loss of efficiency through drivetrain? If the EJ257 block is stout to those numbers, I will tell my friend that he is wasting his money.

04-02-2009, 12:19 AM	#33
Hareball Scooby Newbie Member#: 165025 Join Date: Nov 2007 Chapter/Region: MAIC Location: Charles Town, WV	I'm in kind of the same boat as far as wondering wtf an EJ20K is, I recently purchased a 1998 WRX STi Type-R coupe w/ an ej20k and while I know a bit about ej205/255 engines I'm slightly befuddled by my new ej20k.

04-02-2009, 12:53 AM	#34
RallyColtTurbo Scooby Specialist Member#: 16819 Join Date: Mar 2002 Chapter/Region: SCIC Location: Lake Elsinore, CA	EJ20K is the evolution of the EJ20G. Heads are the main difference. They switched from a HLA (hydraulic lifter) under the cam bucket on the EJ20Gs to solid shim adjusted bucket. This allowed the engine to rev higher reliably. Some versions have the shims under the bucket where they cannot be "spit" out, for one more level of reliability. Cams are generally "hotter" on the EJ20Ks also. The EJ20K was the last of the phase 1 motors to go into the Impreza. Phase 2 was a minor block redesign with the biggest change being moving the crankshaft thrust surface from the center (#3) journal to the rear (#5) journal. Phase 1 motors end with a letter (EJ20G, EJ25D, etc.) while phase 2 motors end with a number (EJ205, EJ251, etc).

04-02-2009, 01:16 AM	#35
sense of nature Scooby Guru Member#: 112759 Join Date: Apr 2006 Chapter/Region: MWSOC Location: In the V hole! Vehicle: 2015 Stock OEM AsFu* 3.6r OMG S.C'd	As Tony says G stands for GGGGGGGGggrrrrrrrrrrreeeeaaaaaat ! IMO anyway

04-04-2009, 02:40 PM	#37
Matt Monson Scooby Guru Member#: 832 Join Date: Jan 2000 Chapter/Region: RMIC Location: Teh Ghetto Garage, CO Vehicle: 99 2.5RS, '85 911 '73 914 and 2012 BRZ	There's a pretty short list of Subaru engines that used a semi-closed deck block...

04-04-2009, 03:38 PM	#38
adbramsay Scooby Newbie Member#: 152345 Join Date: Jun 2007 Location: The Bahamas Vehicle: 2000 R34 GTS-T sedan silver	ej207, ej208, and the ej257. and i think that the motor on the right is not the ej20g but in fact the ej22 motor from the 22b, it used a closed deck block with ver 4 sti heads. that motor was crazy!!! IMO I dont think that there was a better 2.0-2.5 litre turbo motor ever made from the factory.

04-04-2009, 07:53 PM	#41
scby rex Scooby Guru Member#: 104878 Join Date: Jan 2006 Chapter/Region: TXIC Location: copperas cove Vehicle: 02 wrxbastardchild aw, MPS 2.34 breaking in	Yes the pic I posted has a ej207 ver7 on the left and a eg20g on the right. 100% sure as a friend is building the G.

04-07-2009, 08:10 PM	#44
94 GT Scooby Newbie Member#: 193676 Join Date: Nov 2008 Location: Whitby ont Canada Vehicle: 94 legacy GT silver (grey soon!!)	yeah my 4A-GE toyota non torbo or supercharged has then too!!! it is a good idea though keep that Detionation away buy keepin them kool!! (I don't know how much it would actually help detionation but good lubing anyways!!

04-08-2009, 04:59 AM	#45
ncarn8 Scooby Specialist Member#: 71419 Join Date: Sep 2004	i closed the oil squirters up on both my builds. Runs fine, im more interested in bearings getting oil at 8200rpm than pistons get arbitrarily splashed

04-08-2009, 12:48 PM	#47
adbramsay Scooby Newbie Member#: 152345 Join Date: Jun 2007 Location: The Bahamas Vehicle: 2000 R34 GTS-T sedan silver	i know kinda off topic and am sorry for hijacking the thread but as far as i can tell you guys seem to know the most about jdm engines on this site. what in order are the top 5 strongest? afaik they are 1) ej22g (22b) 2) ej207 (ver 7+ sti) 3) ej208 (b4/gtb legacy) 4) ej20k (ver 4+ sti) 5) ej20r (98 gtb)

04-09-2009, 10:05 AM	#48
spazmoo Scooby Newbie Member#: 140183 Join Date: Feb 2007 Location: Goldsboro, NC Vehicle: 2005 Legacy GT OBP	the hijack works in my favor. I want to be able to tell my friend about the strongest blocks we have.

04-09-2009, 08:12 PM	#49
94 GT Scooby Newbie Member#: 193676 Join Date: Nov 2008 Location: Whitby ont Canada Vehicle: 94 legacy GT silver (grey soon!!)	do the oil squirters run off the crank main??? that is probly the earlier turbo engines burned through rod bearings!! THAT Happened to my 22T and I think that it is starting on my STi tooo!!! (Ihope not) what do you have to do to block tham (if that in fact will bring better crank pressure??