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Old 06-19-2009, 12:26 AM   #26
gto7419
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Quote:
Originally Posted by cribbie View Post
Are there any other methods? if not does this mean it was not balanced?


I am really surprised nobody has made a comment on the picture with the turbo in it
twinscroll 40r?
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Old 06-19-2009, 12:30 AM   #27
DSM_Outback
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Quote:
Originally Posted by cribbie View Post
Are there any other methods? if not does this mean it was not balanced?
Subarus are neutral balance. No external weight phasing/timing is required.
It means, if you run a piston set whose weight is different than the fuqued up Ross ones you have now, you'll still have a balanced assembly.
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Old 06-19-2009, 12:47 AM   #28
All_talk
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Originally Posted by cribbie View Post
...
I am really surprised nobody has made a comment on the picture with the turbo in it
Hardly noticed it, maybe I’ve been jaded by too much engine porn… ya seen one big turbo, ya seen em all.

Gary
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Old 06-19-2009, 12:51 AM   #29
wrxsti.l
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AFAIK you have Ross' EJ22T 2.4 "stroker" pistons for use with the 79mm EJ25x crank - as indicated by the 1.161' (29.489mm) compresion height. Ross' replacement EJ22T pistons have a compression height of 1.275' (32.385mm).

Also FYI, Ross' replacement EJ25x pistons have a compression height of 1.192" (30.276mm).

You really have only two options now:
1. send them back (but free replacement depends on who ordered them and what they ordered); or
2. As per maxwell's comment, use a suitable 79mm stroke crank and build a 2.4L stroker.

Leslie
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Old 06-19-2009, 09:10 AM   #30
3MI Racing
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Originally Posted by wrxsti.l View Post
AFAIK you have Ross' EJ22T 2.4 "stroker" pistons for use with the 79mm EJ25x crank - as indicated by the 1.161' (29.489mm) compresion height. Ross' replacement EJ22T pistons have a compression height of 1.275' (32.385mm).

Leslie
You will note that 32.385mm - 29.489mm = 2.896mm Now that is actually a 79mm stroke (2mm) and 0.896mm left over that would be from a longer use rod or a rediculously crappy quench height.
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Old 06-19-2009, 10:19 AM   #31
madmax718
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no good comments here.. but those old pistons look completely horrid.
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Old 06-20-2009, 05:02 AM   #32
jamal
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my wheels fit

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If it helps I can kick Ian in the ass for you tomorrow.
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