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Engine Info EJ208 Info wanted

#1 User is offline   RSK GREG 

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Posted 28 April 2013 - 1:19 PM

Am having trouble trying to find decent info on the EJ208 Engine, seems to be fuck all on the net that I can find unless I am not looking in the right place, been looking on and off for quite a while now but not a lot of luck.
Wanting as much info as possible, engine specs, upgrade info, turbo info.............everything and anything
Cheers Greg
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#2 User is offline   boostin 

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Posted 28 April 2013 - 1:43 PM

They go bang easy. Swap it for a 207. Done.
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#3 User is offline   h8wrx 

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Posted 28 April 2013 - 9:48 PM

 RSK GREG, on 28 April 2013 - 1:19 PM, said:

Am having trouble trying to find decent info on the EJ208 Engine, seems to be fuck all on the net that I can find unless I am not looking in the right place, been looking on and off for quite a while now but not a lot of luck.
Wanting as much info as possible, engine specs, upgrade info, turbo info.............everything and anything
Cheers Greg

ill see if I can find some relevant information for you today bro
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#4 User is offline   DCVR 

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Posted 29 April 2013 - 1:42 AM

Wots a 208 out of?
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#5 User is offline   h8wrx 

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Posted 29 April 2013 - 1:48 AM

 DCVR, on 29 April 2013 - 1:42 AM, said:

Wots a 208 out of?

Manual Twin Turbo BE/BH B4 Legacys 1998-2002, they got the awesome heads
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#6 User is offline   DacerX 

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Posted 29 April 2013 - 2:32 AM

 boostin, on 28 April 2013 - 1:43 PM, said:

They go bang easy. Swap it for a 207. Done.

Solid advice there
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#7 User is offline   Reuben 

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Posted 03 May 2013 - 12:24 AM

 DacerX, on 29 April 2013 - 2:32 AM, said:

 boostin, on 28 April 2013 - 1:43 PM, said:

They go bang easy. Swap it for a 207. Done.

Solid advice there


Except that crank, bearings, rods and block are all identical... Any big end bearing issue is NOT model related, but instead YEAR related. Pistons on the other hand, EJ207 will be foreged, 208 cast. Compression, dependant on year will also be lower.

Here's what I know of the EJ208, i'll not bother talking about the 206 (Auto TT motor, 208 is manual only)

BH5A - 8.5:1 Compression - "Phase-II", or V5/6 generation.
BH5B - 8.5:1 Compression - "Phase-II", or V5/6 generation.
BH5C - 9:1 Compression - "Phase-II", or V5/6 generation.
BH5D - 9:1 Compression - "Phase-III", or V7 generation.

Rev D EJ208's can be considered a totally different motor to the A/B/C's, they run totally different cams, cam pulleys with different timing marks, different crank sprocket with different timing marks, pink 550cc injectors instead of yellow 440's, different intake manifold design. etc.

I have put a Rev D 208 into my dads BH5A Auto GT, that had a 206, and it runs like a dream. All the 206s are 9:1 compression, so that was no issue. I had to swap the entire intake manifold and sensor loom over to the new longblock, as well as change the cam pulleys and sprocket. Once all the old gear was put onto the new longblock, she ran like a dream, and runs like a dream to this day.

Turbo upgrades to any EJ208 are pretty much a non event, no bother. Any upgrades essentially are a non event and not worth your time and money. If you have a pre Rev D manual, then possibly a sequentiall controller, but BH's don't really need them. If one has an EJ208 powered GT, then the best thing to do if you want to start modding, is hit it with a single conversion. BEWARE THE COMPRESSION, I state it cause it is relevant, you must match your ECU to the compression, if you run an ECU for an 8.5:1 STi, in one of the 9:1 208's, you will have severe pinking/detonation as experienced buy quite a few people.

Useful links:
http://www.dirtyolbc...ression-ratios/
http://www.dirtyolbc...-compatibility/
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<Shale>: Blighter doesn't really have an accelerator pedal, it's more just a loudness pedal. You can change volume, but you won't go any faster.


<mjlqtown>: (Southern US accent) I'v excised the demon! This car is now clear!


<Reuben>: I feel like when you stomp the throttle in Blighter, it's like you've startled an old man!
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#8 User is offline   h8wrx 

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Posted 03 May 2013 - 12:59 AM

awesome info bro thanks :)
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#9 User is offline   RSK GREG 

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Posted 03 May 2013 - 6:27 AM

Hey thanks reuben, your a machine mate, info on these motors is pretty hard to find, I searched for hours and hours for even just some more info than the basics but there is just fuck all out there. So from what I have read the best thing you can do is go single turbo with these motors?
I am going to try a different turbo set up on the 208 with a different ecu and some changes in the pipework, still running 2 turbo's but want to see what this achieves, If I am not satisfied with this then I will go single turbo with ecu changes to suit.
What turbo would be a logical choice for a single conversion on a 208?
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#10 User is offline   h8wrx 

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Posted 03 May 2013 - 7:06 AM

Vf30
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#11 User is offline   Familyman 

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Posted 03 May 2013 - 8:03 AM

TD07 ;)
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#12 User is offline   h8wrx 

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Posted 03 May 2013 - 8:32 AM

 Familyman, on 03 May 2013 - 8:03 AM, said:

TD07 ;)

Lmao!
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#13 User is offline   Reuben 

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Posted 05 May 2013 - 11:28 AM

Be aware that along with the motor change came an ECU and loom and sensor change. If you have a BH5A/B/C, you're stuck with phase-II gear. BH5D, you can tune the factory ECU, and good gains can be had. This is not possible as easily on the A/B/C's
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<Shale>: Blighter doesn't really have an accelerator pedal, it's more just a loudness pedal. You can change volume, but you won't go any faster.


<mjlqtown>: (Southern US accent) I'v excised the demon! This car is now clear!


<Reuben>: I feel like when you stomp the throttle in Blighter, it's like you've startled an old man!
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#14 User is offline   FBSBC5 

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Posted 08 May 2013 - 10:17 PM

 h8wrx, on 03 May 2013 - 7:06 AM, said:

Vf30


twin TD04L set up
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#15 User is offline   Sammy 

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Posted 17 October 2016 - 8:20 AM

Helllllooooo... Sorry to bump this from the dead lol but I have ej208 questions and be good to keep all this info in one topic. Props for the information already here fellas.

So I have information to give. Apparently you can easily swap a rev D engine to a single turbo conversion if you get a wrx ecu stamped A7 or A8, these match the compression ratio of the rev D engine and won't det(or so I'm told). Of course as stated above you'd need to change pulleys to retain the v5/6 cam/crank sensors if you choose this ecu as well as the matching afm/injectos/other sensors. So there are options out there for someone who wants to single turbo or replace these into a wrx/sti ect.


My questions

Does the ej208 rev D engine have normal cast pistons or sti type forged pistons?
Does anyone have any pics of one dissembled ?
What sort of power are these things capable of? (I got a link ecu on order)
What are the differences between these heads vs the avcs heads?
Are the cams closer to the sti or wrx engine specs?

please and thankyou! :)
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#16 User is offline   Dundaberg 

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Posted 17 October 2016 - 9:43 AM

I know that the pistons are similar to v7 sti, but are cast. block is fully open deck. rear thrust crank, rods look the same as 20g 20h by the looks of them. Heads are similar to EJ205, shim over bucket. cams are closer to wrx than STI. pretty sure they have factory MLS head gasket, but they still have pretty fragile bottom ends.
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#17 User is offline   Reuben 

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Posted 17 October 2016 - 10:28 PM

Bottom ends are not fragile on the rev-D 208's, that's probably the single biggest draw card they have. Same as V7 bottom ends.
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<Shale>: Blighter doesn't really have an accelerator pedal, it's more just a loudness pedal. You can change volume, but you won't go any faster.


<mjlqtown>: (Southern US accent) I'v excised the demon! This car is now clear!


<Reuben>: I feel like when you stomp the throttle in Blighter, it's like you've startled an old man!
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#18 User is offline   Dundaberg 

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Posted 17 October 2016 - 11:32 PM

 Reuben, on 17 October 2016 - 10:28 PM, said:

Bottom ends are not fragile on the rev-D 208's, that's probably the single biggest draw card they have. Same as V7 bottom ends.


oops haha my bad. Oh well now i know! lol
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#19 User is offline   Reuben 

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Posted 19 October 2016 - 12:59 AM

Everything else you said is pretty much right as far as I know.
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<Shale>: Blighter doesn't really have an accelerator pedal, it's more just a loudness pedal. You can change volume, but you won't go any faster.


<mjlqtown>: (Southern US accent) I'v excised the demon! This car is now clear!


<Reuben>: I feel like when you stomp the throttle in Blighter, it's like you've startled an old man!
0

#20 User is offline   Dundaberg 

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Posted 19 October 2016 - 1:21 AM

Oh and cylinder walls are 1.5-2mm thicker than EJ20G/20H
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