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Old 06-07-2007, 08:23 PM   #51
99RSTurbo
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Quote:
Originally Posted by cdigerlando View Post
Have any of you 3.0 builders considered sleaving, deck closing, or semi-closing?
I would imagine they'll hit a certain HP level where they will have to sleeve them.

Nice build BTW!!!
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Old 06-08-2007, 01:41 PM   #52
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Quote:
Originally Posted by 99RSTurbo View Post
I would imagine they'll hit a certain HP level where they will have to sleeve them.

Nice build BTW!!!

Sure. I'm just wondering what they are using as a rule of thumb as to when we should abandon the cast iron and go to ductile iron. Ductile iron has the added advantage of not only being stronger, but also being slicker, so that less frictional heat is produced. When subaru goes to a solid aluminum/silica alloy block like the new M3, I'm going to that motor!
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Old 06-08-2007, 01:54 PM   #53
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Quote:
Originally Posted by cdigerlando View Post
Sure. I'm just wondering what they are using as a rule of thumb as to when we should abandon the cast iron and go to ductile iron. Ductile iron has the added advantage of not only being stronger, but also being slicker, so that less frictional heat is produced. When subaru goes to a solid aluminum/silica alloy block like the new M3, I'm going to that motor!
silica aloy?? crazziness ! when is this going to happen? where can one find some more info on this crazziness !
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Old 06-08-2007, 02:19 PM   #54
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Originally Posted by IllNastyImpreza View Post
silica aloy?? crazziness ! when is this going to happen? where can one find some more info on this crazziness !
I'm not sure about the percentages used, but silica is used in a lot of aluminum forgings to achieve different properties. Google it. The block I am talking about is the new V-8 M3 motor. Google it too. It is a fantastic motor.
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Old 06-08-2007, 02:29 PM   #55
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I want to see the numbers on this bad boy!
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Old 06-08-2007, 02:36 PM   #56
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Quote:
Originally Posted by cdigerlando View Post
Sure. I'm just wondering what they are using as a rule of thumb as to when we should abandon the cast iron and go to ductile iron. Ductile iron has the added advantage of not only being stronger, but also being slicker, so that less frictional heat is produced. When subaru goes to a solid aluminum/silica alloy block like the new M3, I'm going to that motor!
Don't hold your breath
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Old 06-09-2007, 11:59 PM   #57
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Quote:
Originally Posted by cdigerlando View Post
Sure. I'm just wondering what they are using as a rule of thumb as to when we should abandon the cast iron and go to ductile iron. Ductile iron has the added advantage of not only being stronger, but also being slicker, so that less frictional heat is produced.
Ductile iron conducts half the heat of gray iron. The main reason is that the carbon does most of the heat conduction. Gray iron has conductive "flakes". Ductile iron has non-conductive "nodules". Compacted Graphite Iron has something in between, closer the Gray.

Also, "silica" isn't the same thing as "silicon" (or silicone, for that matter"). Mixing aluminum with "silica" wouldn't make an alloy, it'd make a Metal Matrix Composite because "Silica" is Silicon Dioxide, IE: glass.

Subaru and BMW probably already BOTH use silicon as one of the elements in their casting matrix for their blocks.

-Adrian
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Old 06-10-2007, 12:32 AM   #58
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Waiting for video. You can never get enough H6 loving.
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Old 06-12-2007, 11:37 AM   #59
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carbon is to steel
as _____ is to aluminum

SILICONE!
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Old 06-14-2007, 08:12 AM   #60
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Quote:
Originally Posted by sumfoo1 View Post
carbon is to steel
as _____ is to aluminum

SILICONE!
Slightly off the topic, but interesting never the less...

Great build Jeff, and awesome to see you photo-documenting it! My report on my (slowly-progressing) build will be online shortly.
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Old 06-14-2007, 03:52 PM   #61
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sorry i posted it in the wrong thread i think
someone was talking about the high silica content bmw motors somewhere on here and people were confused why there was silicone in the alloy.
doh!
my fault.
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Old 10-02-2007, 05:59 PM   #62
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Any updates on this
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Old 10-06-2007, 06:35 AM   #63
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Waiting for video
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Old 11-21-2007, 08:51 AM   #64
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Any news or updates??
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Old 11-22-2007, 07:19 AM   #65
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Quote:
Originally Posted by sumfoo1 View Post
carbon is to steel
as _____ is to aluminum

SILICONE!
Here's the real irony (and sorry for the continued OT): cast iron, ductile iron, white iron, etc ... ALL HAVE MORE CARBON THAN STEEL. I know that makes NO sense, since steel is pure iron + carbon + (multiple alloying elements, like molybdenum) .... but here's a phase diagram for iron and carbon alloying: http://www.sv.vt.edu/classes/MSE2094...es/kimcon.html

Note that anything above 2% carbon, is "cast iron", while less than 2%, which is closer to pure iron, is "steel". Go figure.

Also, Aluminum has MANY varied alloying constituents, silicon being one of the most common, along with copper, and zinc.

edit: p.s. When the right alloying elements are added, steel undergoes a phase change into martensite. While the austenite is shown in the steel portion of that phase diagram, if it were to show the martensite, it would have to note that austenite is "meta-stable" in the martensitic region until well below 0 degrees Fahrenheit. That's why many steels are cryo-treated. The austenite, which has larger grains, and is much less wear resistant, is almost entirely converted to martensite by the extreme cooling as it becomes less and less stable in the martensite region as the temperature drops.

Last edited by SaabTuner; 11-22-2007 at 07:25 AM. Reason: More info ...
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Old 12-13-2007, 05:19 PM   #66
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updates updates please!
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Old 12-24-2007, 01:49 AM   #67
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NEWS PLEASE!!!!!

I plan on doing a similar build but for a VERY different car..........'92 Legacy, total sleeper. have been planning it for some time and should be able to start when I get home from Kuwait. I have spent a lot of time with the guys at Pacific Import Auto gathering info but want as much as I can get before I start the project.
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Old 12-25-2007, 01:08 AM   #68
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Check out Jeff Perrin's very detailed build up report. May have to do some searching, or it might be on his website still, www.perrinperformance.com.

Also, I have a write up on here as well, http://forums.nasioc.com/forums/show...highlight=twin
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Old 01-29-2008, 06:59 PM   #69
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Update:

http://forums.nasioc.com/forums/show....php?t=1437246

Cheers,

Jeff

Also, I have some H6 parts for sale for those looking to do this conversion themselves:
http://forums.nasioc.com/forums/show...7#post21111277

Last edited by sponaugle; 02-13-2008 at 01:34 PM.
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Old 02-08-2008, 10:18 AM   #70
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Jeff,
From the pictures it looks like all the mains are fed oil from one side and a crossover tube on the bottom supplies oil to the head(via the block) on the other side, is this correct? Do the rods all get fed from their own main? Or are there shared oil passages on the crank like on the 4cylinder engine? Makes me wonder how well these things oil up in the RPM range.

-Dominic
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Old 02-13-2008, 01:33 PM   #71
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Quote:
Originally Posted by KitoAutoSport View Post
Jeff,
From the pictures it looks like all the mains are fed oil from one side and a crossover tube on the bottom supplies oil to the head(via the block) on the other side, is this correct? Do the rods all get fed from their own main? Or are there shared oil passages on the crank like on the 4cylinder engine? Makes me wonder how well these things oil up in the RPM range.

-Dominic
I have a block out and in the garage, so I'll snap some good pictures and post them up.


Cheers,

Jeff Sponaugle
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Old 04-21-2008, 09:50 AM   #72
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That's what dreams are made of
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Old 04-22-2008, 09:42 AM   #73
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drooling..excuse me while i go to the bathroom..

where did you get your supertech goodies?
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Old 05-08-2008, 09:29 PM   #74
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holy hell, i want your job...whatever your doin, its definitely right...much props, where is that video? im impatiently waiting
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Old 05-08-2008, 10:11 PM   #75
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also. i tried pm'ing you but your inbox is full...since your a swapper, any suggestions on my build? im currently in the middle of the build and small improvements i could make on the way to completing it is more or less what im lookin for...plz take a peak ;]

http://www.rs25.com/forums/showthrea...=78047&page=14

"ej257 shortblock w/ jdm ej20k heads"
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