More 4.2 questions.

[Wooshy]

I have recently pulled apart my old block, everything looks good with exception of this one deep score i found, its a semi deep cut into the cylinder wall, Is this repairable?
other than that the heads are great, its just that one issue, it was able to stop the crank from turning by hand. any advice?

[ottocycle]

Man that looks... Deep. I really don't think honing will fix that. Any way you can measure the depth of the scratch? Use a dial bore gauge if you can. That way you will know how deep the scratch is and what process you would need to remove it.

[oasis]

That looks like you nicked the wall with the rod or a tool..

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[Wooshy]

That looks like you nicked the wall with the rod or a tool..

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Didn't use any tools to pull it out after loosening the bearing I just pushed it up by hand held the rod the whole time, the block wouldn't turn past that point, the reason I pulled it apart was because it wouldnt turn over by hand, when I pulled that piston out, now she's fully free

[Rol-co]

I would grind the sharp edges off and test again with the piston, if it goes smooth its ok. Sleeving all eight ones for one scratch like that is a bit overkill don't you think?

[Wooshy]

I would grind the sharp edges off and test again with the piston, if it goes smooth its ok. Sleeving all eight ones for one scratch like that is a bit overkill don't you think?

had my buddy who is a world class tech at a chevy dealership look it over, he grabbed a small file and touched it, then took a ball hone to it, put the piston back in and it freed up and was able to pop paper "like the youtube videos so i guess i am going to drop new pistons in and see where it goes from there *shrug*

[Wooshy]

I am needing internal gaskets to replace these internal gaskets, Anyone have any part numbers because i cant seem to find anything on these. and the ones on the way out, I have sealer for the outside to seal everything, but i need to find these gaskets so i can replace them, Thanks in advance!

[RussAdams]

I am needing internal gaskets to replace these internal gaskets, Anyone have any part numbers because i cant seem to find anything on these. and the ones on the way out, I have sealer for the outside to seal everything, but i need to find these gaskets so i can replace them, Thanks in advance!

Vinny on this site turned me onto the 7Zap site. They have great diagrams for finding part numbers. Here's the link to the diagram for the parts you need:

https://audi.7zap.com/en/usa/audi+a4...103-103040/#12

This is for a 2005 S4. They have other models if you navigate back up their menus.

Hope this helps! Russ

Edit 3/11/2023:
7Zap servers all appear to be gone. Site no longer works.

HOWEVER: Audi themselves have a darn good site. Took me some time to find it but here they are:
https://parts.audiusa.com/Audi__S4.html

You can also try
https://www.catcar.info/audivw/?lang...dHo9PTIwMDU%3D

[Wooshy]

Vinny on this site turned me onto the 7Zap site. They have great diagrams for finding part numbers. Here's the link to the diagram for the parts you need:

https://audi.7zap.com/en/usa/audi+a4...103-103040/#12

This is for a 2005 S4. They have other models if you navigate back up their menus.

Hope this helps! Russ

Oh wow that's a nice tip to have!

[threehouse]

For parts lookup I use this site: https://nemigaparts.com/cat_spares/etka/audi/

Can't see picture of deep score but a tig weld repair and then re-machine of the cylinder would most likely fix it. Need a engine shop for the machine. If you are in CT I can recomend a good place.

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For parts lookup I use this site: https://nemigaparts.com/cat_spares/etka/audi/

Can't see picture of deep score but a tig weld repair and then re-machine of the cylinder would most likely fix it. Need a engine shop for the machine. If you are in CT I can recommend a good place.