I was doing some late-night web surfing and came across this old Subaru TSB on proper surface prep during head gasket jobs:
http://www.bescaredracing.com/sti/tsb/cylinder_head_gasket.pdf
(Link to the 3M Roloc Bristle "White" Disc: https://www.amazon.com/Scotch-Brite-Quick-Change-Attachment-Aluminum-Diameter/dp/B000FW4LDU or https://www.amazon.com/gp/product/B01MSU3PYQ/ref=ox_sc_act_title_2?smid=A1Y3PCPH3CY53X&psc=1)
At least from an OEM, I was a bit surprised to see these discs as an "approved" method of prepping the engine block and/or the cylinder head for re-sealing. I have always used plastic razors and gasket remover.
trav, mattd, clineberger and others -- any thoughts?
http://www.bescaredracing.com/sti/tsb/cylinder_head_gasket.pdf
(Link to the 3M Roloc Bristle "White" Disc: https://www.amazon.com/Scotch-Brite-Quick-Change-Attachment-Aluminum-Diameter/dp/B000FW4LDU or https://www.amazon.com/gp/product/B01MSU3PYQ/ref=ox_sc_act_title_2?smid=A1Y3PCPH3CY53X&psc=1)
At least from an OEM, I was a bit surprised to see these discs as an "approved" method of prepping the engine block and/or the cylinder head for re-sealing. I have always used plastic razors and gasket remover.
trav, mattd, clineberger and others -- any thoughts?