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how to --- BEST METHOD For Cleaning Head Gasket Surface
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- čas přidán 26. 09. 2020
- how to --- BEST METHOD For Cleaning Head Gasket Surface
This is a Cummins b series block. But you can do this same thing with any block. Just be careful if you are doing a aluminum block as there easy to remove material from do not push hard on your wire wheel. but this is the BEST METHOD For Cleaning Head Gasket Surface that i have found.
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Always learn something new watching your videos, thanks for taking the time to share!
What’s what I am going to hear
Thank you. I'm doing a garage rebuild on a 383 and this has helped tenfold.
Thanks for this I've watched many youtubers and I'm convinced now to surface my heads and block at a machine shop
Keep it up cutterup! I love learning your tips and tricks even from decade old videos. Just wanted to say thanks! I would like to see a comparison between the sanding block and the mill maybe with and without warpe/twist and die like the bent valve video. :D
Good information always good to watch a knowledgeable technician
Thanks for the videos when I was a mechanic for gm a long time ago I had a truck in the shop where the owner had wire wheeled the block and managed to get a lot any is to much the little wires in the engine . I use the wire cup brush but I damn carefully about them ... yea those rolok or what ever you call them on a die grinder can take some materal.
Great video! I love to learn new and some of the best tips!
Glad it was helpful!
Right on, redoing my top end along with a head gasket for the first time and I'm pretty paranoid on how clean the mating surfaces should be without having it machined
Definitely with you on the machined sandpaper backer plate
Also you can use a flashlight behind your straight edge to look for low spots along with your feeler gauge.
also a way to see if there is a bad spot
Thank you .very good
Really good video thanks man
No problem. Glad it helps out
0:50 Just about learned the hard way with these. Didn't know if I needed scotch brite pats or grey pads. Tried both on a piece of test scrap metal I had and the scotch brite threw sparks. Yeah no, that went back in the box.
👍
Excellent video..... thank you
No problem.
I see a lot of people starting to use those Nylon abrasive wheels on a drill bought a couple myself to clean up the deck surface on my 5.3 build but haven’t used it yet, do you think those would be fine then resurface it with 220 and 400 grit sandpaper?
My block in my truck. After. Wire wheel the heads and block surface do I still need to use a steel block and sandpaper? Afterwards or can I continue putting it back together thank you for the great video
Head I would always have surfaced and really depends on what the build looks like
Hey man, looking to do a pretty complete reseal on 1999 5.9 cummins 24v with a p pump swap. Most likely pulling motor and knocking everything out. Any recommendations on what gasket kit to buy? Tried to find oem everything but seems some things are hard to find. What source do you use and what kit would you use. Big thanks!
I like mahle or Cummins but both are hard to get right now
Great video man! As a machinist is there any webpage or forum you recommend
none that i know of
Hi Andrew 👋
How do you fix some minor pitting around the coolant passages or do you surface anytime there’s imperfections? My block is completely flat just some pitting
Surface is the best way.
I find the 3M Roloc Bristle Disc Grade 120 to work best for cleaning the top of engine blocks.
You can for sure. But I have seen a lot of damage from them as well
Is the scotch brite so bad on a steel block? Or is it mainly aluminum blocks that are the huge concern? I used it on my steel block to remove gasket material only taking off what was absolutely necessary
The scotch fibre is the issue. Unless the the engine is completely apart I am not a fan of using it.
Would you skip the file and wire brush when doing this for an aluminum block?
i used a brass brush for the aluminum blocks, i will do a video
I should’ve watched this before but I used a die grinder and a 3M roloc wheel and I didn’t put any rags or anythin in the cylinders. I can see that there’s dirt and crap in the cylinders what’s the best way to remove all that? I also don’t have the Cummins Barring tool to spin the motor (not sure if that’d be good to do anyway) I tried using a blowgun already but still looks like there’s some stuff in there. Should I use a shop vac?
vac it out and wipe the cylinder down with oil on a rag , then turn the engine over off a balancer bolt and run the pistons down and wipe the oil off when there on the way back down from tdc
@@CUTTERUPROB ok thanks!
I totally agree with the machined sandpaper plate, but do not agree with the file or the course wire wheel
So if doing this with engine block still in the vehicle do i worry about the sanding material getting in coolant and oil ports?
one of those things . the cylinders i tape off and you can oil galleries you can plug off just need to be careful you can pull the plugs out after. most guys use nothing. The coolant side i not worried about. I do a oil system purge before i put rockers on but i don't know anyone else that does
Bro brake clean and lots of compressed air.
Best buy a spray can spray the head and let it dry then do sanding with block if something left after that you hove to do it more respray and sanding more untill all color went out with sanding
You talking spray gasket remover?
@@CUTTERUPROB paint spray can from the beginning and block sanding, then check for clearance if it'd done well instead of checking time to time and you don't know whether it's OK or not if it has low spots itll not be completely sanded so you have to concentrate on that area then respray again and block sanding then check if the color went away then you will be ok but check clearance to be sure good luck man but it's really tough job and you'll get pain in your shoulder after this💪
I use lay out dye. For that myself.
Is there any parti way you pull the alignment dowel pins out when they are stuck?
i will do a video on it
Awesome thanks!
Trying to sand a deck like this will remove more material from the middle of the block between cyl 2 and 5. Doing it by hand you are kind of limited to using that repeating pattern going from the front to back and back to front, never going fully off the block and back on. It will help side to side flatness or small low spots, but only the middle 70% or so of the deck sees the entire surface area of the sandpaper - the very front and back only sees part of the sand paper surface. When I considered doing this to my Cummins block I actually couldn't find sheets of sand paper big enough to cover a piece of 30" long glass or granite. I just pulled it and got a proper deck by a good machine shop (like Rob's). Unless you're desperate, I'd save the sand paper routine for smaller blocks and heads lol.
I would always prefer to surface the block on a machine myself but its not always fusible. i have done this method a few hundred times. the best way i have found with pulling the block, you are right have to be careful to not move to much material but way better then a roloc wheel.
@@CUTTERUPROB you learn something new every day, the 3m roloc bristle "white" are made for this to clean blocks. several auto manufacturers recommend using them on aluminum blocks including subaru and ford. good luck.
@@Runescape. yeah they recommend it so you can blow a head gasket and pay 3 million dollars to replace it again
What would you use of aluminium head? Mines, gasket material is sticking and its hard to remove. Can i use a brass wire brush?
i use a caribe scraper and a sanding block with 600 grit
@@CUTTERUPROB I'll use that. Thanks 👍
Is there a type of wire brush that should be used? Because there are many different types, stainless, brass, steel, etc. I would think you want to use a wire that's softer than the iron block or head you're working on, so you don't literally start removing metal from the surface, and jack the mating surfaces all up?
If your not versed with doing it use a fine fire wheel there less aggressive
Any advice on cleaning aluminum blocks? I've heard that fine sandpaper and plastic scrapers are the only way to go.
I save a carbide scraper and a sanding block it how I do them
Hey man, I just tried the wire wheel on my cast iron block and it was WAY more aggressive than the Roloc sanding disc. It literally took out chunks of the block and left gouges in the metal. Thanks for the bum advice.
I have done it this way for 15 years and 100s of blocks and never hurt a block. How hard were you pushing on the wire wheel.
@@CUTTERUPROB I don't recall pushing very hard at all. Ran it for like two seconds at high speed. Cut into the edge of the coolant port.
If it's a brand new wire wheel forget it. It will eat into it. It will only work with older worn wheels where then end of the wire has already deformed.
@@yasharenner6681 you have to use brass wire wheel. If you use a wire wheel that’s made of softer material, it will not scratch or gouge the block. If you use a steel or stainless steel, you will get an even scratch mark that’s ok also.
@@Tierone1337 yah should have used brass but the truck has been running good, no problems.
What is the approach for getting all gasket material off of aluminum Honda Civic upper barrel surfaces? The head is at a machinist shop for resurfacing, but the block upper barrels mating surfaces are still not bright aluminum in color. Options with engine in the car working outside of my garage?
i like using a carbide scraper
@@CUTTERUPROB, Not sure what a carbide scraper is.
What size an material is the block toy built.. I have a new head an gasket on my 12v an it's spitting oil out the exhaust side I'm hoping I can clean it up some
1 inch thick / 6 in wide / 8 inch long
@@CUTTERUPROB it didn't leak with the old head not sure what's warped head looked fine.. Cylinders had scoring like it was over heated at one time but the engine never burnt oil an had little blow by if any.. Think the rings re seated or something?
Could have sealed up.
What grit paper do you recommend for this? Sorry you answered it after I commented
it depends on the engine but between .320-600 grit
Will this not affect the connection between the head and block? (new to this, sorry if its a silly question)
Yes. The surface need to be a flat surface with no in perfections
@@CUTTERUPROB Thank you for the response, still in learning when it comes to stuff like this, so sometimes my questions are stupid to more experienced people.
@@CUTTERUPROB you mean imperfections right 😅
Best wire wheel to use is an Osborne ss .006” knotted wire wheel (3/4” - 1”). Learned that right at cummins when I worked there
what grit of sand paper are you using?
depends on how bad the surface is, but i like to end up 400-600 grit
An you use a wire brush? As well?
I use one on a die grinder or hand grinder
So what is the sanding disc that you said not to use at the beginning.... Roloc disc?
Any abrasive disc really
@@CUTTERUPROB I literally just did this a few hours ago and used a Roloc disc. Did I screw something up? What should I be looking for?
I ONLY have ever used a block with sandpaper, start with 100, and then 220, 320, then 400.
Will never touch a block with anything rotational.. ever.
Can't I just use a razor blade and red scotch bright ? Thanks
You can but it doesn't tell you if you have a low spot, that's why i like the block to do the job.
@@CUTTERUPROB can I use just about anything that is plat to tell like a level?
Is there any concern of a piece of wire coming off that wheel and dropping into the cylinder?
if use a high quality wire wheel i have never had a issue. but if yo want to be extra safe you could clean the cylinder walls with brake clean and us masking tape to seal everything up. this is what i do if things are really dirty.
@@CUTTERUPROB just letting you know that I had an engine that failed 1 week after inframe. When I cut open the oil filter it had wires from a wire wheel in it
@@mahart40 what was the failure after a week ? good info thanks
@@CUTTERUPROB Spun a rod bearing and the Mains and Rod bearings were scored up from the wires and other metal circulating through from the cam that started losing metal because of the wires. Was not my engine rebuild btw. This was a shop in Florida, truck made it to Iowa before it was towed the rest of the way to my shop.
@@mahart40 shitty deal for the guy.
Dont listen to this guy people....Anyone who cleans a deck surface with an aggressive wire wheel has no business giving how to advice on motors
Please do a video on how you do it. I have been doing it for years this way on cast blocks works just fine.
👀
Been a mechanic 30 + years and used all methods of cleaning a deck and head and all gasket surfaces for that matter and the most efficient way is with a right angle grinder and a abrasive wheel. With the exception of aluminium surfaces you would have to work pretty hard to mess up a surface so bad the gasket won't seal it. And with aluminum you just use a lighter touch. Don't buy in to all this bullshit I have built over 100,000 engines in my time and zero gasket surface failures
I have been doing it 20 plus years I like to do things a certain way. But Man you must be a hell of a good hand to build 100,000 engines in 30 years. 10 a day
Apprentice - "But I used the soft grinder pad"...
Me - "...., ill get To to fix it..go organize the bolts again.'
Everyone need to learn. But it can be frustrating when guys don’t listen