91 L98 Engine Block Surfaces
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,009
Likes: 62
From: Houston Tx
91 L98 Engine Block Surfaces
Hi everyone, I am ready to install the heads on my 91 L98 and I need to clean my engine block surfaces. I have the gasket materials off but trying to clean the head gasket paint marks/imprints and get to a clean shiny surface. Any suggestions on what to use without scarring/gouging the engine block? I saw a couple of threads that says to use scotch brite. Does that work without scarring up the surfaces? Thanks.
Drifting
Joined: Jul 2022
Posts: 1,805
Likes: 365
From: Central Florida
Scotch bright is controversial. According to some sources scotchbright releases an oxide particle (IIRC) that is small enough to get between bearings and the surfaces they are trying to protect. According to others it is not. It is also said that shiny is not the goal, clean and smooth is the goal. I am sorry I do not have the answer for you but please take time to dig deeper into cleaning a blocks surface for heads. There are as many opinions as there are questions about cleaning the blocks surface.
Last edited by Vets-Vet; Jun 27, 2024 at 03:20 PM.
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,009
Likes: 62
From: Houston Tx
Scotch bright is controversial. According to some sources scotchbright releases an oxide particle that is small enough to get between bearings and the surfaces they are trying to protect. It is also said that shiny is not the goal, clean and smooth is the goal. I am sorry I do not have the answer for you but please take time to dig deeper into cleaning a blocks surface for heads.
Yea, I probably should have said smooth and clean; Dont care about shiny.
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,009
Likes: 62
From: Houston Tx
That's good feedback sheriffjim. Keep us posted. I'm going to keep looking and see what other option(s) may be viable, as well. Thanks.
Racer
Joined: May 2005
Posts: 277
Likes: 39
From: Billings, Montana but forever from Nebraska
I’ve used lacquer thinner & a rag, it’s my go to when simple green doesn’t work. However I have used regular mineral spirits to wash down cylinders because it doesn’t evaporate as quickly as lacquer thinner.
