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Old 12-30-2011, 05:01 PM   #626
Bariga
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Originally Posted by reid-o View Post
Hopefully if you make a big enough fuss you can have them give you a deal on a version 2 (or maybe upgrade you for free). I'm just starting to push mine now, and all the low speed stuff is so much easier to work with.
hmm that would be cool, if they wont fix ill ask for v2 box.
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Old 12-30-2011, 05:03 PM   #627
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Still no turbo for me. I was hoping to get mine shortly after you got yours but no dice.

I'm dropping the new motor in the car now and wiring up the Link so when the turbo does show up all I need to do is bolt it on.
holly ****, i though that big wait was over...
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Old 12-30-2011, 07:41 PM   #628
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14 psi by 3500 rpm in 3d, still on break in tune with low timing.
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Old 12-31-2011, 09:22 AM   #629
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What kind of pull was that lol, and what the heck are you listening to?
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Old 12-31-2011, 04:07 PM   #630
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What kind of pull was that lol, and what the heck are you listening to?

He was showing how soon the boost comes in.
He's still on his break in tune so he's being responsible by not doing long pulls.
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Old 12-31-2011, 05:48 PM   #631
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Originally Posted by Bariga View Post
Subaru Sti 7670 14 psi pull - YouTube

14 psi by 3500 rpm in 3d, still on break in tune with low timing.
Thats about right inline with what my 3076 used to do on the 2.5L. This is 2.3L motor your running correct?
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Old 01-01-2012, 03:19 AM   #632
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Thats about right inline with what my 3076 used to do on the 2.5L. This is 2.3L motor your running correct?
I am pretty sure its a 2.6 stroker.
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Old 01-01-2012, 05:17 AM   #633
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happy new year guys !
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Old 01-01-2012, 09:33 AM   #634
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Factory stroke/bore but with long rods.
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Old 01-01-2012, 12:39 PM   #635
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Factory stroke/bore but with long rods.
So that nets a 2.6L? Damn I have been reading this for about 2 months thinking this was a 2.3 destroker.

What are the advantages of running factory stroke/bore with longer rods? Shorter pistons less side loading?
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Old 01-01-2012, 03:37 PM   #636
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Quote:
Originally Posted by TDagen

So that nets a 2.6L? Damn I have been reading this for about 2 months thinking this was a 2.3 destroker.

What are the advantages of running factory stroke/bore with longer rods? Shorter pistons less side loading?
Rod ratio changes but displacement stays the same
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Old 01-01-2012, 09:32 PM   #637
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Anton has a 2.5 with +2mm rods.
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Old 01-02-2012, 04:54 AM   #638
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Originally Posted by TDagen View Post
So that nets a 2.6L? Damn I have been reading this for about 2 months thinking this was a 2.3 destroker.

What are the advantages of running factory stroke/bore with longer rods? Shorter pistons less side loading?
No it makes it a 2.5l.

Search around built motor about long rods. There have been threads that go into great depth. Or you can ask Homemade or Dom since they are the main guys who do long rods on subarus.
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Old 01-02-2012, 11:51 AM   #639
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Bore,stroke,cylinder cout are the only factors in displacement; rod length has no effect.
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Old 01-03-2012, 12:11 AM   #640
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so people who have them now... worth the hype or no?
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Old 01-03-2012, 02:37 AM   #641
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we will find out this Saturday!
Does AEM map from v1 can be adapted into v2 box? I'm going to ask aem if they can upgrade me..
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Old 01-03-2012, 11:45 AM   #642
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Originally Posted by TDagen View Post
So that nets a 2.6L? Damn I have been reading this for about 2 months thinking this was a 2.3 destroker.

What are the advantages of running factory stroke/bore with longer rods? Shorter pistons less side loading?
A 2.6L is an 83mm stroked EJ25 and is qiute the opposite of a destroked engine, which is a 75mm stroked EJ25.

A 'long rod' EJ25 (79mm stroke) is not actually a long rod but pushing the rod lenght +2mm does slightly reduce rod angulation etc but really is negligable. It primarily reduces reciprocating mass.

/threadjack and onto seeing what this 7670 puts down

-Micah
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Old 01-03-2012, 03:31 PM   #643
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...It primarily reduces reciprocating mass.

-Micah
How does putting more material into a rod make it lighter (2mm longer)? Not trying to be a dick, honestly wondering how that works? I mean, if they make something a special way for the long rod motors, couldn't they in turn make it the same way for a standard rod motor and come out even further ahead in reciprocating mass?
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Old 01-03-2012, 04:30 PM   #644
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^^

I'm assuming its because you end up with a shorter piston....?
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Old 01-03-2012, 09:41 PM   #645
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How does putting more material into a rod make it lighter (2mm longer)? Not trying to be a dick, honestly wondering how that works? I mean, if they make something a special way for the long rod motors, couldn't they in turn make it the same way for a standard rod motor and come out even further ahead in reciprocating mass?
Quote:
Originally Posted by Loubaru View Post
^^

I'm assuming its because you end up with a shorter piston....?
Largely yes. The rods, even my +4mm ones still way FAR less than a stock rod too.
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Old 01-03-2012, 10:20 PM   #646
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However, could those principals not be applied to a "stock length" rod and custom forged piston for an even lighter still reciprocating mass? I guess, that's the question i was going for...
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Old 01-03-2012, 11:26 PM   #647
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However, could those principals not be applied to a "stock length" rod and custom forged piston for an even lighter still reciprocating mass? I guess, that's the question i was going for...


NO, in other words. If you lengthen the rod by 2mm you must shorten the compression height of the piston by 2mm. even though the aluminum that composes the piston is is ~1/3 the density of the steel that makes up the con rods; there is a more than 3:1 difference in the effective cross section of the length shortened from a piston VS. the length added to a rod.

CN: 2mm less piston compression height weighs less than 2mm extra rod length.


Oh, and you are right you can apply both principles if you are willing to have a piston that sits way below deck, but that sucks.
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Old 01-04-2012, 12:55 AM   #648
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From my understanding it has little to do with the weight and more to do with the geometry.
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Old 01-04-2012, 03:30 AM   #649
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Little compare of 35R and EFR 7670 lol no number yet this is just for ****s and giggles

35R did 9 psi at 3500 rpm
EFR did 15psi at 3500 rpm

so EFR spools about 500 rpm faster, and im sure on dyno dom will make it spool even faster!

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Old 01-04-2012, 12:18 PM   #650
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Hurry up and get tuned. I'm getting antsy over here
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