SXR is this clean enough to put a new base gasket on?
- Thread starter Zerfman34
- Start date
Mark44
Katie's Boss
- Location
- 100% one place
No use a scotch bright attachment on a pneumatic tool.
Mark44
Mark44
why tell him not what to use?
keep wiping with a wet rag with mineral spirits and use a fingernail until it it mirror smooth
Tyler Zane
Open Your Eyes
- Location
- Panama City Beach, FL
it doesnt matter what it looks like, the surface gets stained. as long as its smooth and oil free your good. i use the finger nail method and razor blades (keeping them flat, being careful not to gouge). you can feel more than you can see.
Mark44
Katie's Boss
- Location
- 100% one place
That would kill my manicure I prefer the proper tools.
Mark44
Mark44
Tyler Zane
Open Your Eyes
- Location
- Panama City Beach, FL
i know! i have to get the proper tools next time i have to rebuild.
If you use a blade do it freehand (not in a scraper tool or widget) and keep the blade 90* vertical. Going back and forth like you're scraping off a lotto ticket will get it all off and not leave you will gouges in the mating surfaces like you're doing.
And not sure if you've been doing so but stuff some rags or paper towels in the crank area to keep stuff from falling in.
Or get a small angle grinder with 3m pads.
And not sure if you've been doing so but stuff some rags or paper towels in the crank area to keep stuff from falling in.
Or get a small angle grinder with 3m pads.
- Location
- St.Louis Missouri
I usually scrape it off the best I can with a razor(which if you do it right is pretty darn clean) and then go over the rest with a green scotch brite pad which is abrasive enough to eat at the gasket but not abrasive enough to take metal away.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Knock off what you can with the razor blade, then use some 220 sandpaper and mineral spirits to remove the rest, you can also wrap the sandpaper around a piece of wood and go at it,you are not looking for a mirror finish by any means, just make sure every bit of the old gasket material is removed.
- Location
- Lake Orion, Michigan
oil free and smooth to the touch - good to go.
don't over think this.
don't over think this.
- Location
- St Augustine, FL
NEVER use a scotch bright attachment on a air tool on sealing surfaces. You are asking for trouble because even a Scotch Bright attachment will remove metal at high speeds. I've seen quite a few cases and cylinders that have been ruined because someone had cleaned the sealing surfaces that way. You can use a Scotch Bright pad by hand to clean the surface though. If you don't plan on splitting the cases, I would try covering the crank and masking it off so you don't get any debris down inside the crank or cases.
- Location
- St Augustine, FL
And don't use sand paper to clean a sealing surface. Your goal is to have a clean and FLAT surface. So unless you are using sand paper on a granite surface plate and you know what you're doing, don't use sand paper.
Mark44
Katie's Boss
- Location
- 100% one place
Depends on the intelligence lever of the person operating the pneumatic tool common sense also plays a big part in this
Mark44
I use the white rol-lok gasket remover wheel in my 1/4" die grinder
http://www.toolfetch.com/Category/Blades/Abrasive_Blades/Grinding_Wheels/3_Inch/3M7529.htm?nogs=1
http://www.toolfetch.com/Category/Blades/Abrasive_Blades/Grinding_Wheels/3_Inch/3M7529.htm?nogs=1
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Granite surface plate, is this guy for real ? Do you have any idea how long it would take to move even .00010 of metal with a wetted out piece of 220 grit sandpaper ?
Last edited:
I'm with xjetrider on this one. Scotch brite by hand is the harshest thing you should ever use. Any kind of spinning tool is an absolute NO NO. Spin it too fast, cock the tool a little too much, don't cock it enough, move too fast, move too slow, or overlap your last pass and your mating surface is hosed. Intelligence is shown by using a tool that can't screw up whenever possible not by using the wrong tool carefully.
I've used sandpaper to smooth out sealing surfaces but I typically used 320 or 400 grit paper taped to a large piece of glass so that the entire surface gets hit evenly on every pass. I flattened out a 0.005" low spot on my 750's head in about 30 minutes or so with the method just listed using 400 grit so I would think you could remove 0.0001" in under a minute with 220.
I've used sandpaper to smooth out sealing surfaces but I typically used 320 or 400 grit paper taped to a large piece of glass so that the entire surface gets hit evenly on every pass. I flattened out a 0.005" low spot on my 750's head in about 30 minutes or so with the method just listed using 400 grit so I would think you could remove 0.0001" in under a minute with 220.
Last edited:
Tyler Zane
Open Your Eyes
- Location
- Panama City Beach, FL
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Disclaimer: As with any tool the use of sandpaper requires some degree of intelligence, if you do not possess the required level of intelligence please refrain from using sandpaper.
Personally I have never had a base gasket leak , so that being said either I am damn lucky (after building hundreds upon hundreds of motors since 1984 ) or I am doing something right.
Personally I have never had a base gasket leak , so that being said either I am damn lucky (after building hundreds upon hundreds of motors since 1984 ) or I am doing something right.