deck surface questions
Thread Starter
Racer
Joined: Aug 2000
Posts: 426
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deck surface questions
I'm getting ready to bolt my rebuilt heads back on. I'll be using Fel-Pro's .015 steel shim rubber coated gasket. I have a small nick on the deck surface & I'm wondering if this will be a problem?
Also, how clean does the deck surface have to be? I scraped off everything with a razor, sprayed & scraped gunk off with Permatex gasket remover 2X & used laquer thinner. But every time I wipe the deck surface with the thinner & a white rag I end up with a dirty rag...Thats telling me I still have stuff to clean off. Am I being too picky or do I need a truly spotless deck surface?
Also, how clean does the deck surface have to be? I scraped off everything with a razor, sprayed & scraped gunk off with Permatex gasket remover 2X & used laquer thinner. But every time I wipe the deck surface with the thinner & a white rag I end up with a dirty rag...Thats telling me I still have stuff to clean off. Am I being too picky or do I need a truly spotless deck surface?
Racer
Joined: Apr 2004
Posts: 401
Likes: 0
From: IL
I believe that nick is away from an embossment, should be OK. Need an overall pic though, usually surface is smoother for RCM (rubber coated metal) but I don't have the Ra (surface finish) measurement off the top of my head. Think it needs to be 20 Ra or less. Towards the right side of your pic the area around the coolant port looks rough, pitted, that could cause some issues if the surface is still like that all around. Avoid spraying it with CooperCoat or other sealer like other posts.
Later.
Later.
Thread Starter
Racer
Joined: Aug 2000
Posts: 426
Likes: 0
Originally Posted by GasketDude
I don't have the Ra (surface finish) measurement off the top of my head. Think it needs to be 20 Ra or less.
The rest of the deck surface is very smooth, no pitting or rust.
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Team Owner
Joined: Sep 2003
Posts: 88,393
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From: eville in
Originally Posted by tonyk72
What is Ra & how could I measure it? I saw that on the instructions that came with the gasket.
The rest of the deck surface is very smooth, no pitting or rust.
The rest of the deck surface is very smooth, no pitting or rust.