How To Hone An Engine Cylinder
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- čas přidán 7. 08. 2017
- In this video I am honing the cylinders of my 1978 Ford Bronco 351M engine.
Links:
Honing tool
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Honing Replacement Stones
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Just an FYI, I am not a mechanic so forgive my terminology. I'm just a do it yourselfer finding a cheap and effective way to do things while sharing it with the world. This video is for demonstration purposes and anything you do is at your own risk.
So many comments from people that never did enough engines.
Cast rings are very forgiving.
My grandma could hone a cylinder and it would turn out just fine with cast rings.
When you build a bomber race cheap claimer engine, you want everything loose.
Now if you are building a high mileage engine you want 250,000 miles out of it, it's put together completely different.
This is where all the power is in the engine. We are talking hundreds of horsepower! Very few people understand how to get this easy horsepower. Needless to say, keep your cylinder walls straight. The easiest way is to take a piston turn it upside down in a bore with the rod and measure the piston to wall clearance at the top middle and bottom with a long truck Diesel feeler gauge. Another big factor is how course or smooth the stones are and the amount of clearance that’s best for your application. This is one of the best kept secrets in engine building.
Dont listen to the nay sayers. Some of these people forget that the entire point is to do this on a budget, not perfection. It wont be perfect but the whole point of honing is to create a rough surface so the rings and the walls grind themselves perfect in due time and use. Good work for 20 bucks.
Everything you said is total BS.
Hi sir after the hone you can use the same piston or you will be installing the big one ?
So if you had a block that still had the original honing marks would it not need to be done again ?
Bro.... rule number one when honing... ALWAYS USE A LUBRICANT!! That’s with any form of machining
In the shop, when turning or milling cast iron, it is self lubricating. That is what I have been taught. Thats machining. This is using stones. Stones are not machining. (Not counting grinders)
That's like we use to do it, It smoked like a SOB but we could buy the oil by the case for about 40 cents a bottle, they said the engine did better using a little oil, what you think about being better using a little oil
If you call oil blowby "good" then you will be happy.
You was maked correct. Up an down quickly
it works? how long does the car drive after such treatment? then the nominal rings and pistons are fitted?
Piston rings would need to be replaced
351M/400 good motor to hone.
Crank mains blow out way before the bore goes bad.
I would have thought big-ends wear out earlier since their motion is more complex that rotation.
Hi just want to know how the build went. I've got a diesel that I had changed rings twice. It won't bed. Taking it apart again to do honing, just want to know how it worked for you.
Great vid.
Do i need to used stock size of piston and rings or go one size up after honing?
@ Rholdan Yabut- It depends on the pistons in the motor. Mine were previously oversized .030. So I had to go with rings that would fit that piston. I do not believe that honing the cylinders would require a larger ring.
Kevin DIY awesome, thanks for the info
@@rholds1973 you need to mic the cylinders to check the tolerance. If you are already close to or over factory spec, it will need to be bored.
DONT STOP IT WHILE ITS STILL IN THE CYLINDER GOOD GOD
Is it worn out and not fix piston?
Is that standard bore?
nappa has replacement stones usally
What hone u useing
Set diesels up dry in the cylinders, put it together fast and crank it up. The rings will set in less than a minute.
Going way too fast to get a good crosshatch and stopping it in the bore leaves vertical lines on the walls when you pull it out. How'd the engine turn out?
Fucken A
you need a cross hatch pattern best to practice on old motor to figure out speed
I want this meterial
How many times it need to go back and forward
This guy is doing it wrong. 20 -45 seconds per cyl usually and the goal is to get a nice cross hatch pattern while removing the glaze . Also I don't recommend wd-40. Just my .02cents
Is this the cylinder head or cylinder block?
Cylinder block
this is a cylinder block or sub assembly
Don’t see how you got a 45 deg cross hatch with that drill speed and action 🤷♂️. I lol keep searching for someone that does it right 😎
What grit is that hone
You need to run the drill clockwise and then counter clockwise to get a good crosshatch, also a few seconds each way usually does the trick, just trying to take the mirror shine out of cylinder.
That is a ford 351m/400 block
Have this professionally done with torque plates. You may get a nice looking cly.but it doesnt let you know what the bore taper is!!
His bore is probably shaped like an ice cream cone.
Honing cylinders like that will leave cylinder bell mouthed
Absolute melt this guy is, he's doing it for way to long max 30 seconds is needed to creat the crosshatching in the worst case
Lol I did my 355 for 1:30 sec each cylinder it was just fine your not gonna hurt nothing. You know nothing
DIY guys can call this whatever they want. No engine machinist is going to call this a hone job. This is nothing more than deglazing. A hone job removes material and straightens bores. This does not.
That home is not straight it's moving all around it's wobbling what's your own video did this motor turn out okay?
once your're done how would you know what size pistons and rings to use? Like .020 or .030? Thank you
@ Marcus- Honing your cylinders does not remove nearly enough material to go up in ring size. You would have to get your cylinders reamed by a machine shop to require an upsize in rings. I would stick with the same sized ring that was in it previously. I hope this helps.
I pay 100$ per cylinder for this job.I would try it myself now
be carefull don't hone to much
He's not honing, he's deglazing.
I guarantee the compression is off.
That is a glaze breaker not a cylinder hone!
I would just leave it into the engine shop to someone a bit more skilled, I think this is too random, not checking with internal measuring device, might affect compression
Lol it's not going to make a difference. That hone barely takes any metal out. If that. This is not a race engine
@@sschevmale24 Even if its a stock driver the cylinders are most likely out of shape and need a proper hone. These gadgets dont hone, they just deglaze.
@@TOMVUTHEPIMP they are out of shape . Doesn't matter this is a simple rebuild not a race engine . A lot of machine shops don't even use a torque plate hone. So guess what you got took for honing and its still not straight. So use a bottle hone its fine
I don't like honing, I'd rather rebore
That's to much
Pay close attention.
This is the wrong way to do it.
Honing a cylinder requires critical measurements before and after. He doesn't measure at all.
Hi if I want just want crosshatching on the cylinder walls and used a hone would it change the bore size? I thought honing doesn’t take off much material
He's not honing, he's deglazing.
zero compression
Talking does no good when it is in fast forward.
*how not to hone an engine cylinder.
Think he's boring not honing. Not sure.
Get R done...
Ball hone is the best.
Ball hone isn’t best at all. Ball hone will hide defects in the cylinder wall that a flat stone will reveal. The only time to use a ball hone is when you know 100% sure after measuring your cylinder walls are straight and don’t have waves in them or big gouges. A flat stone hone is the best tool for home use although his technique is wrong. The up and down motion should be faster as well as the rpm. Watch any hone machine in a machine shop and you’ll see the difference.
All of these DIY "hone" gadgets don't hone. They just deglaze.
@@bryangillis5183what' about a block with very low mileage like under 5000?? It shouldn't need boring out should it? I fucked up and purchased a new GM 350 vortec block with dished Pistons and I wish to install flat top pistons without any machine work