How to distinguish between a EJ205 and Ej207 short motor? - Page 4 - Perth-WRX.com

Perth-WRX.com

		Perth-WRX.com > Technical > Mechanicals
How to distinguish between a EJ205 and Ej207 short motor?

Welcome to Perth-WRX, click here to register!

Reply

Page 4 of 6

4

#31

Old

02-09-2007, 11:48 AM

BALISTC

BALISTC is offline

Perth WRX Old Skool Cool Dude

Member

Join Date: Jul 2002

Location: Australia

Posts: 6,766

Blog Entries: 6

Thanks: 31

Thanked 48 Times in 34 Posts

BALISTC knows their stuff

Default

So to sum up, here are the differences.

EJ205 - Square dished piston, open deck
EJ207 cast - dished piston with valve relief, semi-closed deck block
EJ207 forged - dished piston with raised centre and valve relief, semi-closed deck block.

Reply With Quote

#32

Old

02-09-2007, 04:13 PM

tuna

tuna is offline

Sign me up!

Why stop at two bar?

Join Date: Jul 2005

Location: Where horsepower is cool again.

Posts: 5,570

Blog Entries: 5

Thanks: 7

Thanked 107 Times in 50 Posts

tuna is a guru

tuna is a guru

Default

yep, looking at the pistons are the giveaway!

__________________

Long live the WRC

Reply With Quote

#33

Old

02-09-2007, 05:13 PM

SCOOTER

SCOOTER is offline

Subaru Tech Division

Member

Join Date: Jul 2006

Location: Swan Valley

Posts: 1,233

Thanks: 1

Thanked 0 Times in 0 Posts

SCOOTER at standard level

Default

I have ACL forged pistons in mine and they are the exact same design as the EJ205 pistons but forged.

Reply With Quote

#34

Old

02-09-2007, 06:02 PM

phatskinz

phatskinz is offline

STI Master

Member

Join Date: Feb 2007

Location: perth

Posts: 536

Thanks: 0

Thanked 0 Times in 0 Posts

phatskinz at standard level

Send a message via MSN to phatskinz

Default

thanks for all the info guy.Its really interesting to know how to tell the difference...

thanks heaps!

Reply With Quote

#35

Old

04-09-2007, 08:24 AM

BALISTC

BALISTC is offline

Perth WRX Old Skool Cool Dude

Member

Join Date: Jul 2002

Location: Australia

Posts: 6,766

Blog Entries: 6

Thanks: 31

Thanked 48 Times in 34 Posts

BALISTC knows their stuff

Default

Also as a point of interest, I read somewhere that Subaru claim the Hypereutectic pistons are 120% stronger than the Forged ones.

Reply With Quote

#36

Old

04-09-2007, 10:08 AM

Hi_VoLtAgE Hi_VoLtAgE is offline

Hi_VoLtAgE is offline

Diesel

Member

Join Date: Aug 2005

Location: joondalup

Posts: 1,148

Thanks: 0

Thanked 0 Times in 0 Posts

Hi_VoLtAgE is unrated

Default

soooo i cant tell whether i have cast or forged without opening engine...?
(ej207)

__________________
signature.

Reply With Quote

#37

Old

04-09-2007, 10:12 AM

BALISTC

BALISTC is offline

Perth WRX Old Skool Cool Dude

Member

Join Date: Jul 2002

Location: Australia

Posts: 6,766

Blog Entries: 6

Thanks: 31

Thanked 48 Times in 34 Posts

BALISTC knows their stuff

Default

Nope

Reply With Quote

#38

Old

04-09-2007, 10:35 AM

Hi_VoLtAgE Hi_VoLtAgE is offline

Hi_VoLtAgE is offline

Diesel

Member

Join Date: Aug 2005

Location: joondalup

Posts: 1,148

Thanks: 0

Thanked 0 Times in 0 Posts

Hi_VoLtAgE is unrated

Default

are just the pistons forged or conrods aswell?

__________________
signature.

Reply With Quote

#39

Old

04-09-2007, 10:56 AM

tuna

tuna is offline

Sign me up!

Why stop at two bar?

Join Date: Jul 2005

Location: Where horsepower is cool again.

Posts: 5,570

Blog Entries: 5

Thanks: 7

Thanked 107 Times in 50 Posts

tuna is a guru

tuna is a guru

Default

the 207 rods are a different material to 205's.

__________________

Long live the WRC

Reply With Quote

#40

Old

04-09-2007, 12:32 PM

Mister Two Mister Two is offline

Mister Two is offline

Perth WRX Old Skool Cool Dude

Member

Join Date: Mar 2006

Location: Surface of the Sun

Posts: 4,042

Thanks: 5

Thanked 8 Times in 8 Posts

Mister Two at standard level

Default

Quote:

Originally Posted by tuna

the 207 rods are a different material to 205's.

Arn't they also slightly thicker as well?

__________________
RS Liberty - Because WRX's are only good for parts...

Reply With Quote

Reply

Page 4 of 6

4

Tags

distinguish, ej205, ej207, motor, short

« Ive Made my Mind up | Intercoolers CHEAP/BETTER/BEST? »

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On Forum Rules

Welcome to Perth-WRX, click here to register!

All times are GMT +8. The time now is 07:19 AM.