ive watched probably a dozen videos on how to use this thing and this has absolutely been the best. Showing how to zero it out to the bore size you want was exactly what i was looking for. Thanks!
Thank you for the video, though I stopped when you showed caliper. They are used for measuring up to 0.01mm or 0.0004 inch. At that precision rate caliper is not considered to be good enough. since your bore specification is within 0.001 inch or 0.025mm, it means resolution of your instrument (caliper) is very much on the edge for your measuring task. You should invest in something with 10 times better resolution, say micrometer? They are really not all that expensive and shall hep you to be really sure in your measurement. Certainly can be done like this, but it is way to tricky for tolerances you are supposed to detect, just my two cents, do not find your self offended with this comment. As you know if you shall be off, say bigger bore than needed, piston rings shall wear faster and engine shall consume more oil, hence the need to be really sure in measurements.
No ring gage either. I've wondered why so many built motors blow...until I saw how gages are used in such an environment. This isn't even the worst of it.
@@felixf5211 I been in, around, worked in and deal with many automotive machine shops. Never ever saw or heard of one using calipers to set up a bore gage. Ring guages are not needed since most shops that have proper honing equipment have proper setup fixtures. Also, a lot of our measurements involve measuring pistons and set gage to piston size to check pisto to wall clearances. I am a Red Seal Journeyman Machinist and work in industrial manufacturing. There we use ring gages when we set smaller bore gages up. Sine I turn large O.D and I.D parts (54" diameter is a common size for me) we set our gages up using the large mics. Another common size for my work is when I bore out our strander rings. These are just under seven feet inside diameter. We have a custom setting fixture for that one. Be one hell of of a ring gage.
Great video. Clearly showed the basics. I admit it was funny to watch this get calibrated with a harbor freight digital caliber, but for everyone jumping down his ass he said he was sending it to a machine shop for a proper measurement.
Very useful and informative, thank you. Before you began measuring, you said to clean the bores_ and "if there are no deep scratches" proceed. My question is, what is considered a deep scratch, and assuming there are some, is there a way to measure the depth of it, and if there are scratches in a cylinder wall, does this render the cylinder useless. I have a scratch in mine but it is not deep (to me). It is more of a round scratch, like a paperclip is round. I can barely catch a fingernail on it.
Thank you, im just wondering, don't you have to set the gauge slightly larger than the bore, then subtract the reading on the gauge, otherwise if you if you just set it at the original bore size you cant measure the wear deviation. If my original bore is 92.0mm, i was a thinking i should set bore gauge at 92.2 and then subtract any dial gauge measurements to get the actual diameter. Am i on the right track?
When you choose the needle length in your kit, it has to be slightly larger then the bore. So that way when you slide it down into the cylinder it is constantly pushing the needle into the instrument. From there you must zero out the gauge at the correct bore specification. This allows you to measure + or - the bore size. Hopefully that makes sense. Here is a link to the kit I used amzn.to/3gXB7DO
Great video! Thank you. I have measured my bores and I really dont know what to do now. Do you know where can I find specs on what the tolerances are so I can find out if I need to hone or take them in for boring? LS 5.3
hey please i have a question on bloc engine its marked the bore cylinder class , for example "abac" can i use piston classe "B 71.98" if the cylinder classe "a 72.00" is worn but still in the limit of classe b lets say 72.02" ? the mix is possible ? cause the workshop says that if classe "a" exced the limit , rebore the cylinder 0.1 and use oversize 0.1 piston Cylinder "A" 72,00-72.01 /// Piston "A" 71,965-71,97 Cylinder "B" 72.01-72.02 /// Piston "B" 71,97-71,98 Cylinder "C" 72.02-72.03 /// Piston "C" 71,98-71,99 over size cylinder "A" 72.10-72.11 /// over size piston "A" 72,065-72,07 over size cylinder "B" 72.11-72.12 /// over size piston "B" 72,07-72,08 over size cylinder "C" 72.12-72.13 /// over size piston "C" 72,08-72,09
Eric,i think you meant to say pushing down on the power stroke and up on the yellow compression stroke.?what you get is piston slap,i could never heat it my self when i was wrenching,all i could pick up was rod knocks and rocker noise. I remember sending pistons out for knurling to reduce piston clearance.way back when.
I’m trying to figure out what my built stroker engine bore size is to order new pistons, want to see if it was a standard bore or was it over bore it’s a 4.75 striker wondering if it’s standard size
I like the demonstration that you did using the Bore Dial gage. It makes a lot of sense!!. It is a difference between parallel and perpendicular measurement? These measurements should be the same or different?
How do you make a comparison if the block has been sleeved to the values that now out of range from factory specifications? I hope my question makes sense. I am basically after the 'real' diameter of the bores.
If engine piston and cylinder liners goes over clearances and Scratch &Pistons can be moved by hand and feel it's most clearance, then what action shall taken?
What's the point in measuring taper and out of roundness if maximum allowed out of roundness is 0.0002 and taper is 0.0007 when this thing can show you 0.0005 and has accuracy of +/- 0.0007?
It’s what I had available at the moment. You might prefer to use a micrometer, but I felt confident that my caliper was pretty accurate. Thanks for watching!
do I really need to do this to an engine? or can I just send it? assuming I'm building a non serious engine, probably turbo, for fun and daily driving.
Properly calibrated Harbor Freight Caliper...LOL Good luck. You really should be using a Micrometer for that my friend. I mean you got .001 tolerance on that ID, so in this case, you are probably good, but, just saying, that Harbor Fraud caliper is only accurate to within .001, you might be outside that tolerance. But good video :)
Machinist here, calipers are. Ot known as a precision instrument. How ever a dial bore indicator is. But by setting your dial bore with calipers probably isn't a good idea. Maybe use gauge blocks with ears or calibrated micrometer.
The error of the electronic caliper is 0.01mm. This is stated in its specification. It works both in the positive and negative directions. It is best to use a micrometer to calibrate the inside meter. He has an error of several thousandths of a millimeter. It is ideal to use calibration rings. So, if you calibrate the bore gauge with a vernier caliper, it will not be quality measurements for the engine certification. It lists ranges up to thousandths of a millimeter. In my country the system is metric, so I don't write in inches.
I agree to use a micrometer to zero the bore gauge but the caliper in this video was dead nuts at .0030 on the feelr gauge. No error and it it a cheap pittsburgh caliper at that.
Good Day all : If you're checking a worn out cylinder a dial bore going straight across would work . This is if you are trying to find out where in the bore is the out of round condition . If you have a freshly machined cylinder it would be so much better to use a three fingered digital dial bore . You will be so much happier . Good Luck !
Most calipers are only accurate to .001” along their entire range. When you calibrated to read .030”, that doesn’t guarantee they are good for your measurement of 3.7795. You are only good to +- 0.001” using your equipment, which isn’t good enough to check if a cylinder is in spec to 0.0005” like you were showing.
I'd have thought you would be much better off using a micrometer set to your bore size, rather than a cheap set of digital vernier calipers.. they really are not very accurate.
As a certified FAA avaition inspector I almost crapped myself seeing a set of calipers in a vise whether it be wrapped in rubber or wood etc. it just ain't right. The accuracy of a pair of calipers is +/- .002" and a micrometer that measures down to .0001" should be used in a Mic. stand not a vise to set the dial bore indicator. The proper way to check a (good) caliper "not a harbor freight" is to use a set of precision ground Gauge Blocks and stack the blocks to the measurement you desire to check and then check the instrument against them. You can get a cheap Micrometer for around $50 with a standard and it would be fine for an engine. As far as (good) Micrometers go you can find good used Mitutoyo etc. ones for $50 and up and check them with the gauge blocks for accuracy. I'm all for run what you brung in tools but you have to buy decent stuff to get decent accuracy.
I'm liking a video from Mitutoyo. It explains the constraints in calibration. Might want to watch it, keeping in mind that you're lucky if your calipers are accurate to a thou throughout their range. Your micrometers(s) need to be calibrated, once you get them, as does the bore mic. A ring gage is used with the latter. Mics can be calibrated with blocks and I'm not just talking about zeroing them out. There's a bit to this. At this point, your readings are in the semi-general area of accuracy. I'm sure that it's not what you want. Good luck. th-cam.com/video/z0d25TFLfmY/w-d-xo.html
This process is fundamentally flawed. A Vernier caliper, particularly a cheap & nasty one like that is in no way accurate enough to set a bore gauge. At the very least a calibrated micrometer should be used but a setting ring is preferable.
Taper and Out of Round don't depend on absolute size anyways - just differences between measurements in different directions and places to ensure it is still a cylinder shape. That only leaves Oversize, which should be picked up by the ring end gap measurement?
Dont use a caliper to this .use micrometers tools . okay if you ar molding toolmaker like me . trained in using measuring tools for 30 years, it can go well😃😃😃 but always use the right tool for job like this .. ok, if you make an old motorcycle cylinder for your own offroader, it will work. ha ha 😅🤣🤣🤣tollerancers on a motorblock must be in spect -- otherwise good video master
Why are you saying it like that? "A bore dial guage"??? Is this how some people talk in different areas of the country?? I've never heard it said like that & it makes me question you & if your for real or just some buger eater they got to put in front of the camara to read a script & obviously nobody there has ever been a machinists? If im wrong then?? I dont think I am. A "bore dial guage"!?? Do you mean a "DIAL BORE GUAGE"???
You are infatuated with the term ROCK IT BACK N FORTH. did you know you never missed one chance to say that. Ha Ha Thanks though. You did not explain how you were seeing the lowest point on the gauge though. As the tool was rocking back and then FORTH, wheres the lowest point. When tool centred to cylinder..?
I was today years old when i realised i could use a feeler gauge to check a vernier caliper. Thanks !
ive watched probably a dozen videos on how to use this thing and this has absolutely been the best. Showing how to zero it out to the bore size you want was exactly what i was looking for. Thanks!
Glad it helped!
broo...same!! all the other videos are ok but this one hit the nail on the head. 💪
Exactly for me the best explanation
To a novice like me, this video is the perfect tutorial. Great video and very kind to make it
No messing around or waffle straight to the point very good explanation! Brilliant!
This is the best among dozens I watched on TH-cam, regarding the same. Thanks and Regards!
Thank you for the video, though I stopped when you showed caliper. They are used for measuring up to 0.01mm or 0.0004 inch. At that precision rate caliper is not considered to be good enough. since your bore specification is within 0.001 inch or 0.025mm, it means resolution of your instrument (caliper) is very much on the edge for your measuring task. You should invest in something with 10 times better resolution, say micrometer? They are really not all that expensive and shall hep you to be really sure in your measurement. Certainly can be done like this, but it is way to tricky for tolerances you are supposed to detect, just my two cents, do not find your self offended with this comment. As you know if you shall be off, say bigger bore than needed, piston rings shall wear faster and engine shall consume more oil, hence the need to be really sure in measurements.
Amen, brother. Harbor Freight digital calipers, HOLY CRIPES!!!
No ring gage either. I've wondered why so many built motors blow...until I saw how gages are used in such an environment. This isn't even the worst of it.
@@felixf5211 I been in, around, worked in and deal with many automotive machine shops. Never ever saw or heard of one using calipers to set up a bore gage. Ring guages are not needed since most shops that have proper honing equipment have proper setup fixtures. Also, a lot of our measurements involve measuring pistons and set gage to piston size to check pisto to wall clearances.
I am a Red Seal Journeyman Machinist and work in industrial manufacturing. There we use ring gages when we set smaller bore gages up. Sine I turn large O.D and I.D parts (54" diameter is a common size for me) we set our gages up using the large mics. Another common size for my work is when I bore out our strander rings. These are just under seven feet inside diameter. We have a custom setting fixture for that one. Be one hell of of a ring gage.
wow engine rebuilds is exciting when you have a buddy to help, that would be you Eric thanks for lessons priceless.
Great video. Clearly showed the basics. I admit it was funny to watch this get calibrated with a harbor freight digital caliber, but for everyone jumping down his ass he said he was sending it to a machine shop for a proper measurement.
Such a damn good video. Well explained and shown AND NO BULLSHIT TALK just pure on point commentary. 100% thumb up from me
GREAT VIDEO ! IVE BEEN BUILDING ENGINES SINCE THE 70S YOU SHOULD BE A INSTRUCTOR IN A TOP NOTCH SCHOOL 2 THUMBS UP
Very useful and informative, thank you. Before you began measuring, you said to clean the bores_ and "if there are no deep scratches" proceed. My question is, what is considered a deep scratch, and assuming there are some, is there a way to measure the depth of it, and if there are scratches in a cylinder wall, does this render the cylinder useless. I have a scratch in mine but it is not deep (to me). It is more of a round scratch, like a paperclip is round. I can barely catch a fingernail on it.
Best explanation yet man!!!! Thank you for your time!!! Your are a inspiration to the job!!!!!
Our professor is using this for teaching Metrology, cool video by the way XD
Pin point to the point not beating about in the bush. Excellent.
Excellent Video And Very Simple language Explanation Thanku So much & keep growing 🥰
Best video I ever watched on this and I mean it. Thank you
Very professional video and well presented too,,,
you explained better that my instructor
Thanks very much for the great video, you've saved me a lot of time!
One of the best videos I've seen! So detailed!!! Love it! Thank you!
Best explanation i've found on youtube!
Glad it was helpful!
thanks for showing how that is done (on to the cave and measure my bores)
Very good tutorial! I think this video will help a lot of people!
Thank you, im just wondering, don't you have to set the gauge slightly larger than the bore, then subtract the reading on the gauge, otherwise if you if you just set it at the original bore size you cant measure the wear deviation.
If my original bore is 92.0mm, i was a thinking i should set bore gauge at 92.2 and then subtract any dial gauge measurements to get the actual diameter. Am i on the right track?
When you choose the needle length in your kit, it has to be slightly larger then the bore. So that way when you slide it down into the cylinder it is constantly pushing the needle into the instrument. From there you must zero out the gauge at the correct bore specification. This allows you to measure + or - the bore size. Hopefully that makes sense. Here is a link to the kit I used
amzn.to/3gXB7DO
Great video! Thank you. I have measured my bores and I really dont know what to do now. Do you know where can I find specs on what the tolerances are so I can find out if I need to hone or take them in for boring? LS 5.3
hey please i have a question on bloc engine its marked the bore cylinder class , for example "abac" can i use piston classe "B 71.98" if the cylinder classe "a 72.00" is worn but still in the limit of classe b lets say 72.02" ? the mix is possible ? cause the workshop says that if classe "a" exced the limit , rebore the cylinder 0.1 and use oversize 0.1 piston
Cylinder "A" 72,00-72.01 /// Piston "A" 71,965-71,97
Cylinder "B" 72.01-72.02 /// Piston "B" 71,97-71,98
Cylinder "C" 72.02-72.03 /// Piston "C" 71,98-71,99
over size cylinder "A" 72.10-72.11 /// over size piston "A" 72,065-72,07
over size cylinder "B" 72.11-72.12 /// over size piston "B" 72,07-72,08
over size cylinder "C" 72.12-72.13 /// over size piston "C" 72,08-72,09
Excellent explanation and video. Thanks for going into depth on the procedure. Happy New Year to yourself and family Artie ❤️
Eric, thank you always learn new things in this channel and really appreciate ur time , cheeeers
Eric,i think you meant to say pushing down on the power stroke and up on the yellow compression stroke.?what you get is piston slap,i could never heat it my self when i was wrenching,all i could pick up was rod knocks and rocker noise. I remember sending pistons out for knurling to reduce piston clearance.way back when.
This is awesome tutorial. Thanks bro!
Man this is what I needed
How do you determine exactly which anvil to use?
By measuring the bore dia roughly with vernier caliper or inside micrometre
I’m trying to figure out what my built stroker engine bore size is to order new pistons, want to see if it was a standard bore or was it over bore it’s a 4.75 striker wondering if it’s standard size
If my measurements are within specs and no tapering, i can just go ahead and buy new standard size pistons and hone?
Yes
@@ADVANCEDLEVELAUTO thanks mate.
I like the demonstration that you did using the Bore Dial gage. It makes a lot of sense!!. It is a difference between parallel and perpendicular measurement? These measurements should be the same or different?
Thank you, that was very well explained!!!
Very well explained, great video.
Thanks for sharing brother, this is important to know👍
Very good job explaining! Great video!
How do you make a comparison if the block has been sleeved to the values that now out of range from factory specifications? I hope my question makes sense. I am basically after the 'real' diameter of the bores.
Good explanation but you need a set if mics bro!
Excellent video !
If engine piston and cylinder liners goes over clearances and Scratch &Pistons can be moved by hand and feel it's most clearance, then what action shall taken?
Tanks boss for the video have happy holidays to you New year
Great job as always
Outstanding tutorial my friend cheers
What's the point in measuring taper and out of roundness if maximum allowed out of roundness is 0.0002 and taper is 0.0007 when this thing can show you 0.0005 and has accuracy of +/- 0.0007?
Great video bro
Hey Eric I'm looking for a machine shop to bore out an engine. Where do you take your engines?
Westside Performance if your near Houston Texas
It's close by I'll them out tomorrow if it's open thanks bro!😎
Good job very helpful thank you.
I am new to this and I am wondering why your using a caliper to zero a dial guage.
It’s what I had available at the moment. You might prefer to use a micrometer, but I felt confident that my caliper was pretty accurate. Thanks for watching!
do I really need to do this to an engine? or can I just send it? assuming I'm building a non serious engine, probably turbo, for fun and daily driving.
explain the procedure for taking cylinder liner for bore gauge
Nicely explained... thks
This video was useful thanks!
Properly calibrated Harbor Freight Caliper...LOL Good luck. You really should be using a Micrometer for that my friend. I mean you got .001 tolerance on that ID, so in this case, you are probably good, but, just saying, that Harbor Fraud caliper is only accurate to within .001, you might be outside that tolerance. But good video :)
Great video bro thank you!!
Machinist here, calipers are. Ot known as a precision instrument. How ever a dial bore indicator is. But by setting your dial bore with calipers probably isn't a good idea. Maybe use gauge blocks with ears or calibrated micrometer.
Great video - thanks for posting!
Very informative thanks
Nice job
Great explanation......
Thank you
Very clearly, good.
What represents the 3.7795" value?
It represents the manufacturers service limits for the cylinder bore
The error of the electronic caliper is 0.01mm. This is stated in its specification. It works both in the positive and negative directions. It is best to use a micrometer to calibrate the inside meter. He has an error of several thousandths of a millimeter. It is ideal to use calibration rings. So, if you calibrate the bore gauge with a vernier caliper, it will not be quality measurements for the engine certification. It lists ranges up to thousandths of a millimeter. In my country the system is metric, so I don't write in inches.
I agree to use a micrometer to zero the bore gauge but the caliper in this video was dead nuts at .0030 on the feelr gauge. No error and it it a cheap pittsburgh caliper at that.
Why on your measurements you minus 0.0005. what for
Moshitoa ( south Africa
Good Day all : If you're checking a worn out cylinder a dial bore going straight across would work . This is if you are trying to find out where in the bore is the out of round condition . If you have a freshly machined cylinder it would be so much better to use a three fingered digital dial bore . You will be so much happier . Good Luck !
Thank you for sharing Gee
Thanks for the video!
thank you, nice work
Any rebuild done 100% right gets bigger pistons.. he’s right about the damage and anything else he ever said
5 thou means 5/1000=0.005. in video it says 0.0005. please explain this??
There are 10 lines between the 0 and the 5, so each line = 0.0005
Good job.
Thank you!
great video bro! Thanks so much :-)
Good stuff
Thank you
Good video 🫡
Awesome .
Thank you
great video thank you for teaching us ( watch your moves 00:32 LOL just kidding )
Haha
A feeler gauge isn’t the best tool to calibrate a caliper. The caliper usually has a tighter tolerance +/-than the feeler gauge. Great video though.
Most calipers are only accurate to .001” along their entire range. When you calibrated to read .030”, that doesn’t guarantee they are good for your measurement of 3.7795. You are only good to +- 0.001” using your equipment, which isn’t good enough to check if a cylinder is in spec to 0.0005” like you were showing.
best enplane
Niiiiiiccceeeeee ooonnee
It doesn't have a preload Guage
Ha! I guess I CAN read a micrometer, my LM7's bores are all right on 3.779
👍
You dont have a micrometer?????
I'd have thought you would be much better off using a micrometer set to your bore size, rather than a cheap set of digital vernier calipers.. they really are not very accurate.
As a certified FAA avaition inspector I almost crapped myself seeing a set of calipers in a vise whether it be wrapped in rubber or wood etc. it just ain't right. The accuracy of a pair of calipers is +/- .002" and a micrometer that measures down to .0001" should be used in a Mic. stand not a vise to set the dial bore indicator. The proper way to check a (good) caliper "not a harbor freight" is to use a set of precision ground Gauge Blocks and stack the blocks to the measurement you desire to check and then check the instrument against them. You can get a cheap Micrometer for around $50 with a standard and it would be fine for an engine. As far as (good) Micrometers go you can find good used Mitutoyo etc. ones for $50 and up and check them with the gauge blocks for accuracy. I'm all for run what you brung in tools but you have to buy decent stuff to get decent accuracy.
Well good thing he said he’s going to send it off to the machine shop to get double checked then
I'm liking a video from Mitutoyo. It explains the constraints in calibration. Might want to watch it, keeping in mind that you're lucky if your calipers are accurate to a thou throughout their range. Your micrometers(s) need to be calibrated, once you get them, as does the bore mic. A ring gage is used with the latter. Mics can be calibrated with blocks and I'm not just talking about zeroing them out. There's a bit to this. At this point, your readings are in the semi-general area of accuracy. I'm sure that it's not what you want. Good luck. th-cam.com/video/z0d25TFLfmY/w-d-xo.html
This process is fundamentally flawed. A Vernier caliper, particularly a cheap & nasty one like that is in no way accurate enough to set a bore gauge. At the very least a calibrated micrometer should be used but a setting ring is preferable.
Taper and Out of Round don't depend on absolute size anyways - just differences between measurements in different directions and places to ensure it is still a cylinder shape.
That only leaves Oversize, which should be picked up by the ring end gap measurement?
Dont use a caliper to this .use micrometers tools . okay if you ar molding toolmaker like me . trained in using measuring tools for 30 years, it can go well😃😃😃
but always use the right tool for job like this .. ok, if you make an old motorcycle cylinder for your own offroader, it will work. ha ha 😅🤣🤣🤣tollerancers on a motorblock must be in spect -- otherwise good video master
It’s good if u have Facebook page I would like to joine Facebook page
And I also want to know how to we define positive and negative value in cylinder gaje
Why are you saying it like that? "A bore dial guage"??? Is this how some people talk in different areas of the country?? I've never heard it said like that & it makes me question you & if your for real or just some buger eater they got to put in front of the camara to read a script & obviously nobody there has ever been a machinists? If im wrong then?? I dont think I am. A "bore dial guage"!?? Do you mean a "DIAL BORE GUAGE"???
😂😂
You are infatuated with the term ROCK IT BACK N FORTH. did you know you never missed one chance to say that. Ha Ha
Thanks though. You did not explain how you were seeing the lowest point on the gauge though. As the tool was rocking back and then FORTH, wheres the lowest point. When tool centred to cylinder..?
😂😂 infatuated, really?
Cool video but your measuring tools need cleaning
Everything you say sounds like a question? Very annoying.
Perfect explanation. Thank you.
Abo- Abdullah .Yemen
It's called a Dial Bore Gauge. It doesn't measure dials.
quit yappin get to work buddy