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Old 08-14-2010, 03:24 PM   #1
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Default 4a-GZ Arias Pistons

Has anyone else used Arias pistons designed for the 4A-GZ before like this guy?

http://www.sdsefi.com/features/july03miata.htm

http://www.atomicspeedware.com/4agez...pratio861.aspx

I wish I could get more info on that build. Like are the pistons drop in? Will they use stock B6 type rods? Wrist pin fitment... etc?

Keep this thread to answering my questions. Not "you should buy Weiscos, or supertech"

thnx
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Old 08-14-2010, 11:14 PM   #2
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that article says the bore has been enlarged 4.5mm!!!! But nothing about customer sleeves. So no they sure as hell aren't drop in.
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Old 08-14-2010, 11:22 PM   #3
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search motorworx on m.net its an extreme overbore he didnt sleave the block if i remember correctly. second thought
http://forum.miata.net/vb/showthread...ight=motorworx
http://forum.miata.net/vb/showthread.php?t=216610
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Old 08-14-2010, 11:43 PM   #4
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Well I'm not nessicarly thinking of going that big. Just the fact that I've used Arias pistons on the past with great success, and they only make them for the 4AGZ, not the BA6. I'm not totally sold on the Supertech's just yet. I know there area lot of people heere using them but then there are also a few threads with people who have had problems.

And the fact that they went up to $410 makes them less attractive considering Wiescos are only a bit more.
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Old 08-15-2010, 10:23 AM   #5
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Quote:
Originally Posted by falcon View Post
Well I'm not nessicarly thinking of going that big. Just the fact that I've used Arias pistons on the past with great success, and they only make them for the 4AGZ, not the BA6. I'm not totally sold on the Supertech's just yet. I know there area lot of people heere using them but then there are also a few threads with people who have had problems.

And the fact that they went up to $410 makes them less attractive considering Wiescos are only a bit more.
arias makes a lot pistons in a lot of different sizes. they make a piston for pretty much every honda engine out there. hit ebay you'll find a ton of them in different sizes.
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Old 08-15-2010, 12:18 PM   #6
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iirc RB20DE\T pistons are near the same bore size for the 1.6l motor
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Old 08-15-2010, 05:04 PM   #7
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the bore may be the same, but what about the placement of the wrist pin and pin diameter? IIRC 1.6L is 18mm?
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Old 08-15-2010, 05:08 PM   #8
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Looks like they make an 81.00mm B16 piston.
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Old 08-15-2010, 06:23 PM   #9
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i would be concerned with making our mazda b engine into interference engines. I actually looked in to this a bit more today for a 1.8 i would go with pistons for a 4g63 because i can get them in 85mm-86mm and i have enough space on a set rods built for the bp to hone them to fit the eclipse wrist pin. but again i would still be worried about the wrist pin location to the top of the dome. for the amount of complexities involved it would make more sense to just use pistons built for the bp in my case or b6 in yours.
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