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Old 12-04-2002, 06:29 PM   #1
sponaugle
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Member#: 4498
Join Date: Feb 2001
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
WRX H6-3.0 Turbo
www.surgelinetuning.com

Default Stock DOHC 2.5L Rod Length..

Over in the FFI forum, we are working on some stroker kit ideas for the EJ20. (see http://forums.nasioc.com/forums/show...9&goto=newpost)

One piece of information we are missing:

What is the rod length for the stock 2.5L Rods on the SOHC and DOHC motors?

According to www.jepistons.com, the DOHC(97-98) is 5.135" and the SOHC (99-) is 5.165".

However http://www.pauter.com/subaru.htm shows the DOHC and SOHC having 5.180" rods.

Anyone know which is correct, or have a stock 2.5 rod they could measure?

Thanks!!
Jeff Sponaugle
jeff@sponaugle.com
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Old 12-05-2002, 12:47 PM   #2
outback2.5HO
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MRT makes complete stroker kits for the EJ20s that bring them to 2.2. They are pricey (+-$3k), but proven.

Are you going to start driving in PGT, or just codriving? It seems as though you have been busy with your WRX, maybe prepping for next season?... Did you have to modify the tranny tunnel to get that 6 speed in there? Did you get the center diff adjustment with that too? At any rate, nice set up.
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Old 12-05-2002, 01:37 PM   #3
North Ursalia
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I have a stock rod from my MY00 SOHC engine that went kaplowie. Send me a PM as a reminder, and I'll check the length when I get home later tonight.

Brian
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Old 12-05-2002, 01:46 PM   #4
sponaugle
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www.surgelinetuning.com

Default

Quote:
Originally posted by outback2.5HO
MRT makes complete stroker kits for the EJ20s that bring them to 2.2. They are pricey (+-$3k), but proven.

Are you going to start driving in PGT, or just codriving? It seems as though you have been busy with your WRX, maybe prepping for next season?... Did you have to modify the tranny tunnel to get that 6 speed in there? Did you get the center diff adjustment with that too? At any rate, nice set up.
I'll still co-drive with Mika, it was a blast last year. I'll keep my car setup for track racing, which is what I really dig... This winter will be some good prep time, and I should be able to get this STI stroker setup working well.

The 6 speed dropped right in.. no tunnel mods. It doesn't have the adjustable center diff though. The front LSD works great though.. pulling out of corners is awesome now.

I still have the regular viscous rear diff, but will be putting in the STI R180 LSD rear diff this winter with the new STI rear hubs and axels I just got..

Jeff
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Old 12-05-2002, 06:36 PM   #5
outback2.5HO
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That's good news. I heard that the 6 speed was bigger and required some trans tunnel "customizing". What gears come in that tranny? That front LSD sounds like a good improvement. Planning an EG33 swap into my Outback, and the 4:11s with a 5 speed are a bit too short for the 6cyl (even the 2.5) on the highway. But a 4:11 with a 6 speed...
That would be sweet. Are they still +-$3500? Might just opt for an early turbo Legacy tranny w/3:90s, just weighing my options.

Glad to hear that you'll still be in the Rally scene. You guys were turning some good times at Oregon Trail. Hope to see you at Doo Wops.

Good luck with your stroker kit and all of the other STI goodies.

BTW, can you get an STI engine complete? I have a friend in dire need of the best EJ20 he can get his hands on. He has a turbo the size of a cabbage that wasted his lower end during the Taste of Subaru...You might have seen it go up in smoke. He's planning on a stroker for his also, if he can't get an STI.
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