0

It’s an aluminum block and there are some high spots of white powdery corrosion.

I was able to gently scrape most off using a (dull) metal paint scraper and a green scour pad, but there are some stubborn spots remaining.

Also I vacuumed out any fine particles from the scour pad that landed in the ports, but if I missed any that “may” have gotten deeper inside is that cause for worry?

2 Answers 2

1

The best or accepted way was to run the manifold face on emery cloth which was on a flat plate or surface plate.

This would gradually reduce the high points.

If the amount needed was significant then a machine shop could machine it.

2
  • It’s not the manifold itself but the engine side that needs cleaning
    – ohmmy
    Feb 22, 2021 at 11:42
  • Same applies - but if the head has studs then they need to come out.
    – Solar Mike
    Feb 22, 2021 at 11:56
0

Slice through the garbage on the aluminum face and all the way around each stud using a NEW razor. Do not use a rotary ANYTHING. If the edge gets nicked grab another blade. Scratches here and there on the aluminum will not be a problem. And for goddsake leave the studs alone. Nothing good will happen there. Lastly get some solvent and a rag.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.