 Piston pin offset for AA auto products 2L 4-cyl please |
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| jess p |
 May 23 2010, 12:16 AM
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#1
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Newbie  Group: Members Posts: 3 Joined: 29-November 09 From: arizona Member No.: 11,079 Region Association: None  |
I bought a set of 94mm pistons for my 914.They are AA auto products. There are
no arrows on pistons for direction for offset. Any help please appreciated. |
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| rick 918-S |
May 23 2010, 06:20 AM
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#2
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Hey nice rack! -Celette Group: Members Posts: 20,463 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region 
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(IMG:style_emoticons/default/welcome.png) I don't have your answer. Just givin ya a (IMG:style_emoticons/default/icon_bump.gif) I don't think there is a concern like a chevy engine. Deck height is the absolute along with cylinder height. This establishes compression and insures a proper head sealing mate. I have read that guys swap the cylinders around until they get the best equal starting point then work on piston height for compression and cylinder height for an even head mating surface.
Show us your car. (IMG:style_emoticons/default/thisthreadisworthlesswithoutpics.gif) |
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| TheCabinetmaker |
May 23 2010, 06:48 AM
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#3
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I drive my car everyday Group: Members Posts: 8,300 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Not knowing who manufactured your pistons, why not call the dr and ask him? The Keith black 96mm pistons do not have the offset wrist pin so it doesn't matter.
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| SLITS |
May 23 2010, 07:11 AM
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#4
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
I emailed them (AA is in El Monte, CA), and they said it didn't make any difference. This was on a set of 96mm.
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| McMark |
May 23 2010, 08:59 AM
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#5
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
The 94s are flat tops, right? They install either way.
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| tat2dphreak |
May 23 2010, 09:38 AM
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#6
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
this came up once before, on 96s anyway... the valve cutout impressions were under the piston which gave a clue about install... idk if the 94s have the emboss, but if it doesn't, then the flat tops shouldn't matter how you install them.
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| jess p |
May 23 2010, 06:38 PM
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#7
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Newbie Group: Members Posts: 3 Joined: 29-November 09 From: arizona Member No.: 11,079 Region Association: None |
Awesome
Thanks for all your help. 71 914 2.0L 70 914 3.2 CONVERSION 76 911S 81 911SC 66 912 V8 SBC |
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| ME733 |
May 24 2010, 08:06 PM
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#8
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Senior Member Group: Members Posts: 842 Joined: 25-June 08 From: Atlanta Ga. Member No.: 9,209 Region Association: South East States |
..........Just measure, with a calaper, the wrist pin hole , to the outside of the piston...in the same plane.....if the wrist pin IS offset you will see the difference.
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