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Old 03-07-2009, 12:37 AM   #1
CHEWY911
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Default oem STi rods in built EJ205

Quick question, can I use oem STi rods in my ej205 even if I decide not to do a stroked build. I was going to use Manley or Wiseco pistons and new oem crank.

Thanks!
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Old 03-07-2009, 02:08 AM   #2
Marnix
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Yes you can.
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Old 03-07-2009, 02:21 AM   #3
ADAS1223
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I have these, and JE pistons in mine if that answers your question
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Old 03-07-2009, 02:38 AM   #4
CHEWY911
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I wonder why in this chart it indicates STi rods are 1mm shorter? Is this just the physical rod itself, and not the centerline of the big and small end?

Sorry for the questions. Just want to confirm before I start buying parts for my build.

http://www.importperformanceparts.ne...ns_subaru.html
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Old 03-07-2009, 07:05 AM   #5
Marnix
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EJ205 and EJ255/7 rods are 130.5 mm, the EJ251/2/3 rids are 1 mm longer.
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Old 03-07-2009, 08:06 AM   #6
Astartes
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Is that for compression purposes in NA cars? Just curious.
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Old 11-06-2009, 02:18 PM   #7
Blubullt02
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btw, I looked it up, AND measured, and ej205 rods are 5.135, and ej257 rods are 5.180.... big difference...
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Old 11-06-2009, 02:20 PM   #8
Blubullt02
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btw, I looked it up, AND measured, and ej205 rods are 5.135, and ej257 rods are 5.180.... big difference...

so you COULD use them, but you need custom pistons
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Old 11-06-2009, 03:13 PM   #9
CKxx
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Interesting...

A lot of rods mfgrs list both EJ20 and EJ25(STi) for the same rods.
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Old 11-06-2009, 06:10 PM   #10
mick_the_ginge
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Many answered this in one of the other Rod vs Rod threads just now. Here it is again

New 2L/2.5L rods are 5.135" long. The rods that measure 5.180" were all for the older blocks with 48mm rod journals, meaning phase 1 crank.

Get rods to match your crank. A phase 1 with 48 mm rod journal = 5.180" and a Phase 2 with 52mm journal = 5.135"
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Old 11-08-2009, 10:14 PM   #11
preza95
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may want to consider using aftermarket rods that are forged such as the ones Scat offers,especially if you plan on run the car at higher rpms. Also if should take away the headache of measurements,since you're not planning to do a stroker kit
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