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Old 04-15-2017, 02:31 AM   #1
whiterabbitrexy
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Default calling all ej20k owners.... what is its limits

hi eveyone as the title states i really woild like to find out the strength and the limits of a opend deck ej20k with stock wrx heads on it ?

first off let me tell u that my ej20k is a bit of a frak engine had 5 oil/water mix in the oil pan 5 times it turned to coffe and drove it like that for 20 to 30km and didnt suppn a bottem end bearing yet..... been giving it some very hard wot through all gears gets to 220km very very easy ....has a 03 sti bottem end internals so my weak link is my stock cylinder heads

anyone ran a gt30 on a stock ej20k? would be my dream to run a gt35 but im sure the cams cant flow that much air and so i think i will have turbo surgeing issuse

please tell me what this engine is cappable of
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Old 04-30-2017, 09:08 AM   #2
whiterabbitrexy
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Bump..... no love for ej20k i see ? dam this sucks
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Old 05-01-2017, 08:17 AM   #3
Titter
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Chapter/Region: International
Location: Ontario, Canada
Vehicle:
2002 WRX Wagon
EJ207 Spec C 4EAT

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it was not a USDM delivered model.

try the australian forums. they got the WRX from the beginning. lots of info down there.

also if your bottom end is an '03... then you have a 207 bottom end and not 20K. asking the limits of a 20K is redundant.
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Old 05-01-2017, 10:22 AM   #4
whiterabbitrexy
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Quote:
Originally Posted by Titter View Post
it was not a USDM delivered model.

try the australian forums. they got the WRX from the beginning. lots of info down there.

also if your bottom end is an '03... then you have a 207 bottom end and not 20K. asking the limits of a 20K is redundant.
australian forums are stupid thats why im on nasioc because u guys know your ****.....got bagged the hell becuase i wanted to run a gtx30 A/R 60. on my mottor .....said it will blow up first pull..... now i know what i know im glad i got out of there and on nasioc.....

Titter thanks for the relply much appreciated .... do u know whats the max power stock wrx heads can take ? im thinking 300 to 320 awhp ? or is that pushing it too much ?
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Old 05-01-2017, 10:57 AM   #5
Titter
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Member#: 416107
Join Date: Mar 2015
Chapter/Region: International
Location: Ontario, Canada
Vehicle:
2002 WRX Wagon
EJ207 Spec C 4EAT

Default calling all ej20k owners.... what is its limits

not to familiar with the 20K heads sorry. but the 207 bottom end is good for 400-450awhp.

however, the USDM wrx with the EJ205 can handle 300-320whp for years. so you might be ok.
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Old 05-01-2017, 11:16 PM   #6
whiterabbitrexy
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Quote:
Originally Posted by Titter View Post
not to familiar with the 20K heads sorry. but the 207 bottom end is good for 400-450awhp.

however, the USDM wrx with the EJ205 can handle 300-320whp for years. so you might be ok.
Titter Bless your heart brother u put a big smile on my face this morning thanks for the info.... i guess my next assignment is to see internal design of the ej20g heads and compear it to the ej20k heads....

thanks again Titter your a Legend broz
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Old 05-02-2017, 09:14 AM   #7
Titter
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Member#: 416107
Join Date: Mar 2015
Chapter/Region: International
Location: Ontario, Canada
Vehicle:
2002 WRX Wagon
EJ207 Spec C 4EAT

Default

im no legend. just a dude on the internet trying to help ppl the same way i was helped.

good luck with the build.
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Old 05-02-2017, 11:02 PM   #8
binny
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Blue

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Should have stuck around on the Aussie forums

The open deck is the issue, you'll need to keep the heads on nicely
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Old 05-03-2017, 06:51 AM   #9
whiterabbitrexy
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Quote:
Originally Posted by binny View Post
Should have stuck around on the Aussie forums

The open deck is the issue, you'll need to keep the heads on nicely
thanks for the tip... already sorted a while ago.... arp head studs should be good for 33psi ....but i doubt my heads can take that much boost lol
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Old 05-03-2017, 06:53 AM   #10
whiterabbitrexy
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Quote:
Originally Posted by Titter View Post
im no legend. just a dude on the internet trying to help ppl the same way i was helped.

good luck with the build.
thanks again Titter much Aprreciated brother
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Old 05-06-2017, 06:52 PM   #11
binny
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Blue

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Also RS25 has a bit of info on the older stuff

http://www.rs25.com/forums/f128/t798...ll-thread.html
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Old 05-08-2017, 10:08 AM   #12
whiterabbitrexy
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Quote:
Originally Posted by binny View Post
Also RS25 has a bit of info on the older stuff

http://www.rs25.com/forums/f128/t798...ll-thread.html
thanks Binny nice find
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Old 05-16-2017, 04:22 AM   #13
whiterabbitrexy
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Quote:
Originally Posted by binny View Post
Also RS25 has a bit of info on the older stuff

http://www.rs25.com/forums/f128/t798...ll-thread.html
so yeah ive read the entire forum and yeah it really dosnt speak about how much power they are getting put through so im back to square one asking anyone if they know what power the ej20k can take? or even to find out what power can ej20k wrx cylinder heads can take ???
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Old 05-17-2017, 12:37 AM   #14
binny
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Member#: 198108
Join Date: Dec 2008
Location: Australia
Vehicle:
MY98 WRX
Blue

Default

I think you mean how much power people are making with the 20K heads?

I was making around 200kw at the wheels (2.0)

A friend of mine is making about 320kw with his with a 2.5 L bottom end
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