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Unread 09-01-17, 12:21 PM   #121
A80Avant
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In the top photo it also goes through to the valve seat as well? But I guess that can be replaced
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Unread 09-01-17, 12:40 PM   #122
Jonas_R
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To be honest plan was to get a 7A head and start out from that. All spark plug holes have cracks
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Unread 09-01-17, 03:06 PM   #123
A80Avant
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Better choice that.
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Unread 11-01-17, 05:50 PM   #124
Kiku
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Jonas your mailbox is full!
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Unread 11-01-17, 07:07 PM   #125
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All good know.
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Unread 12-02-17, 10:07 AM   #126
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So block is bored, honed, cleaned and painted.

Had to bore to 81,5mm pistons, but rebuild is progressing nicely now. Ended up getting Woesnerr pistons from CS-parts.de



Also had my local hose specialist make a new return hose for the bomb and steering rack. It was leaking multiple placed. Ended in 70 euro compared to 200+ euro at Audi.


Next step is to machine the 7A head so it can be fitted to the block.

Does anybody know where the diamond washer is located at the crank pulley?

Oh yeah will have a Tommis Billet crank pulley for sale.
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Unread 12-02-17, 10:12 AM   #127
rxl
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nice and shiny. what paint did you use on that?
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Unread 22-02-17, 09:18 PM   #128
Jonas_R
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Main bearings and pistons



Last edited by Jonas_R; 23-02-17 at 11:41 AM.
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Unread 22-02-17, 10:21 PM   #129
macspring
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Quote:
Originally Posted by Jonas_R View Post

- moving along nicely.
Sure will.





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Unread 23-02-17, 10:35 AM   #130
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Why not go for 82.5 or 83 to get more cc?
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Unread 23-02-17, 10:40 AM   #131
rxl
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You need a custom headgasket and the cilinder walls loose the stability

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Unread 23-02-17, 10:42 AM   #132
s2dk
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But Lots of ppl run 83? And isent it Terryb that Can rebore a hg to fit ?
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Unread 23-02-17, 11:02 AM   #133
Jonas_R
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Area 0 bore 81mm: 5150,39mm^2
Area 1 bore 81,5: 5214,17mm^2
Area 2 bore 82,5: 5342,91mm^2

Stroke: 86,40mm

Volume 0: 2.225cc
Volume 1: 2.253cc
Volume 2: 2.308cc

So that is a gain of 83cc compared to stock or 55cc from 81,5 to 82,5 not worth it in my opinion.
When looking at needing new gasket, thinner walls, re boring could be an issue if engine would fail again (not that I think that)
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Unread 23-02-17, 11:23 AM   #134
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Quote:
Originally Posted by Jonas_R View Post
Main bearings and pistons - moving along nicely.
Always as nice to see an I5 block in this state.
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Unread 23-02-17, 11:31 AM   #135
Jonas_R
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Thanks

Still a long way to go when the engine is done, but plan is to have it running in may
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