ej20 rod knock options?

supernick77 · 11-03-2009, 04:06 PM

ok i am looking for options, advice and helpfull links. i have been using the search but can't seem to find what im looking for. i have developed a knock in my motor shortly after i rebuilt it. being my first rebuild ever i am willing to except that i probubly used to much honda bond and sealed up a passage. i have the ej25 that came out of it. (99lgt) should i could i swap the block to the na 2.5? compression ratio will go up. should i just turn the boost down? will the valves clear? how strong are the internals in comparison to the 02 wrx? (what is the name of the na ej25 dohc) also if i decided to fix my 2.0 block will an sti crank and rods fit into the 2.0 block? will this stroke it? (he he) anyway i know its alot but anything cunstructive will help. thanks!

supernick77 · 11-04-2009, 01:48 PM

anybody.

Homemade WRX · 11-04-2009, 02:18 PM

Ok, I'm guessing you have an EJ205?...EJ25D (IIRC) block with those heads will be significantly high CR...don't do unless you wanna run NA

I'm not sure of the math on it as I haven't spent the time on it.

STi crank and rods will fit into the EJ205 block to make a 2.12L stroker. You can find lots of threads and discussion on this setup. You'll either need to order a certain set of Mahle pistons or order custom pistons.

Your rod knock could have come from a slew of things.

-Micah

supernick77 · 11-04-2009, 04:43 PM

cool thanks. i was having trouble looking for info without the right words to put into the search machine

supernick77 · 11-04-2009, 04:44 PM

the 2.0 is 2002 wrx and the ej25 is out of my 99lgt

11-03-2009, 04:06 PM	#1
supernick77 Scooby Newbie Member#: 145122 Join Date: Apr 2007 Chapter/Region: MAIC Location: lock haven or hopewell pa Vehicle: 1999 99 lgt, 86 brat black, lt blue	ej20 rod knock options? ok i am looking for options, advice and helpfull links. i have been using the search but can't seem to find what im looking for. i have developed a knock in my motor shortly after i rebuilt it. being my first rebuild ever i am willing to except that i probubly used to much honda bond and sealed up a passage. i have the ej25 that came out of it. (99lgt) should i could i swap the block to the na 2.5? compression ratio will go up. should i just turn the boost down? will the valves clear? how strong are the internals in comparison to the 02 wrx? (what is the name of the na ej25 dohc) also if i decided to fix my 2.0 block will an sti crank and rods fit into the 2.0 block? will this stroke it? (he he) anyway i know its alot but anything cunstructive will help. thanks!

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11-04-2009, 01:48 PM	#2
supernick77 Scooby Newbie Member#: 145122 Join Date: Apr 2007 Chapter/Region: MAIC Location: lock haven or hopewell pa Vehicle: 1999 99 lgt, 86 brat black, lt blue	anybody.

11-04-2009, 02:18 PM	#3
Homemade WRX Scooby Guru Member#: 33782 Join Date: Mar 2003 Chapter/Region: MAIC Location: 3MI Racing LLC Vehicle: 96 2.4L LR 35R 00 F250 7.3L toy hauler	Ok, I'm guessing you have an EJ205?...EJ25D (IIRC) block with those heads will be significantly high CR...don't do unless you wanna run NA I'm not sure of the math on it as I haven't spent the time on it. STi crank and rods will fit into the EJ205 block to make a 2.12L stroker. You can find lots of threads and discussion on this setup. You'll either need to order a certain set of Mahle pistons or order custom pistons. Your rod knock could have come from a slew of things. -Micah

11-04-2009, 04:43 PM	#4
supernick77 Scooby Newbie Member#: 145122 Join Date: Apr 2007 Chapter/Region: MAIC Location: lock haven or hopewell pa Vehicle: 1999 99 lgt, 86 brat black, lt blue	cool thanks. i was having trouble looking for info without the right words to put into the search machine

11-04-2009, 04:44 PM	#5
supernick77 Scooby Newbie Member#: 145122 Join Date: Apr 2007 Chapter/Region: MAIC Location: lock haven or hopewell pa Vehicle: 1999 99 lgt, 86 brat black, lt blue	the 2.0 is 2002 wrx and the ej25 is out of my 99lgt