91 E30 M20.
Cleaned as much as I could with carb cleaner and plastic scrapers. How much more should I try to get cleaned? Tips?IMG_4601.JPGIMG_4603.JPGIMG_4604.JPG
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There can't be any material left on the block. You should not be able to feel anything left on the block. From the pictures I don't think you are there yet. Plastic scrapers alone probably aren't going to do it.
I would continue to clean.
Here is mine:
19.jpg
I used steel wool and brake clean...
https://www.bimmerforums.com/forum/s...and-a-Heineken
I myself have always used scotch bright pads and whatever solvent was handy usually brake-clean. Sadly, there isn't secret to doing this other than a lot of elbow grease and if there is I haven't figured it out yet. I think that 95BMWIC has given you a good idea of what it should look like when done essentially as close to bare metal as you can get.
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