How do I clean aluminum heads?
Just pop the front door open when she is gone one day and pull/tape off the wire that goes to that switch. Should be a piece of cake.
It's easy and cheap enough you can mix up a 5 gallon bucket of it and throw the whole head (or other parts) in to soak a few days. I've got tons of used ATF and 5 gallons of acetone is $58 at Walmart.
Even the lightest Roloc disc is going to leave high/low spots. Might not be a huge concern depending on the application, but it's not the best idea. Great video that explains this...
I use the 90* razor blade method. Then wet sand with a 10x12 1/2" alum block w/ to 400g. (block and heads). LS9 gaskets with ARP studs hold 25-30lbs of boost just fine.
Zero scrubbing on these heads and valve covers and they were filthy!







