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Basic Engine Building DVD – Chapter 28: Honing
And finally we come to the main part of the machine shops job, honing the cylinder walls. It will do two things. First it will bring the cylinder walls to the matching diameter of the new pistons. Second it will leave a cross hatch pattern of light scratches, to keep oil on the walls and prevent metal on metal scraping. A dial bore gauge is used to bring it to the exact spec needed within 1/10,000th of an inch.
BoxWrench.net is a community and resource designed for automotive enthusiasts. The Basic Engine Building DVD is over three hours of engine building that covers everything from removal and disassembly to final assembly and engine start-up. This is the ultimate DVD for any home mechanic or engine enthusiast that wants to see a complete rebuild from Teardown to Start-Up. This video can be used to learn how to work on almost any type of internal combustion engine including V8, V6, Straight 8, in-line 6 and even 4 cylinder engines. All of the interactive features and menus will not work over YouTube.
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I have a 102mm piston with just piston( no rings) in cylinder flush with head.
With feeler gauge middle of skirt from bottom of sleeve I get a tight .007mm or .178
edge of skirt is a loose .007mm or .178.
cylinder has just a few very very small lines with no finger nail edges. almost perfect.
Should I just brake glass with those specs? ty
@GUYANESEGT just going to say somthing along those lines
good video
What would a 30 over bore be written down like? .30 or .030? Cause 1.000 is one inch right? And a half of an inch is .500? Im trying to get these thousands down right haha.
I have a Honda 2stroke scooter with a completely smooth cylinder (and no piston). Should I get a new cylinder as I am getting a new piston?
@Serostern depends if ur using an oem piston or if ur gettin an oversized piston
@shadow0imposter The scooter already goes twice as fast than is legal, so I'll stick to the 50cc.
I have overhauled small engines for years for friends (about 50) and my machine shop always wanted the piston (new or old) that was going in the block. I was impressed cause most small engines had generic tolerances. The tool and die owner quit to spend his millions. Great for him but anyone I talk to now does not want the new piston even on an over of 20 or 30 thsds on usually a really old engine. (like an old Clinton) Are these shops getting lazy or just don't care?
Why is the technician not using a bore plate on the deck to stabilize the bores well machining? I thought that was common practice since the 60's or 70's?
@ghettoflyer unfortunately not every machinist does this these days. But any good one will recommend it. OEs dont even do it.
This blocks cylinder walls will distort .0015" to .002" towards the top of the bores when a Torque Plate is installed… simulating the cylinder heads being torqued on the block. Why bother doing the job if its not done right? I mean if you're going to make a video for YouTube, at least show the viewers the correct method for the best results.
hey man my ranchero is ether having a sticky valve problem or a bad connecting rod i want to rebuild my engine its a 1975 ranchero also i will be rebuilding this (without) removing engine would you recommend this dvd for older models?
@RacingHeadService This was NOT made for YouTube. This is a SAMPLE clip from a 3 hr DVD on a simple rebuild called 'Basic Engine Building'.
We don't recommend the torque plate to the viewers for this 'basic' stock engine rebuild on the recommend of the machine shop.
The accuracy gained for a stock engine rebuild was not beneficial compared to the expense of honing with the torque plate. For performance engine building however, we would absolutely recommend the use of a torque plate for honing.
@chamblizi The 'Basic Engine Building' DVD is meant for any 4 cycle engine. Regardless of year, make or model. The only thing a modern engine will vary greatly on, is newer types of variable valve timing systems.
The majority of our customers are working on pre '90 cars & trucks. But plenty on newer models as well.
@ghettoflyer One more time here. Pass it along! This is a sample clip from a 3 hr DVD on a simple rebuild called 'Basic Engine Building'.
We don't recommend a torque plate for the viewers for this 'basic' stock engine rebuild on the recommend of the machine shop.
The accuracy gained for a stock engine rebuild was not beneficial compared to the expense of honing with the torque plate. For performance engine building however, we would absolutely recommend the use of a torque plate for honing.
@BoxWrench so your saying the dvd is usless ?
torque plates are not needed in stock engine build. of course it gets the cylinder more accurate but if your not pushing the walls to the extreme you really dont need it. if you are aproaching 800hp or more in a block then it is deff. required. also depends on cylinder wall thickness.
hes saying this is how you build a 200HP motor with minimal cost and tools. If your building a 400HP motor you need to use a torque plate.
I have a briggs and stratton 3.5 horse motor (aluminum), do you think i can get it .010 over (from 2.56 to 2.57) with a drill hone? its probbably already bored itsself .009 over as it had 10 LBS of compression even after reseating the valves.
can you hone a wall that was hit by a bent rod?
I'm gonna say *probably* not. Unless the damage was negligible.
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The engine provide the lowest fuel consumption per horsepower per hour – 140-150 grams.
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Kolev Motors
Ainda me lembro das conversas que ouvia dizer ao meu paizinho, em criança, quando ele falava com o meu irmão-mais-velho, de «rectificarem as camisas dos motores», deve ser esta actividade pelo pouco que percebo de motores.
here is what u forgot to mention, on certain high hp builds u will need a honing plate that simulates a head being torqued down on the block, you use this because torquing a head down can actually cause a warping affect on cylinders and can cause uneven compression, by using a head honing plate u eliminate these issues
Does the crank need to come out?
View Technologies and Patents for sale or license: Construction diagram and construction of KOLEV MOTORS internal combustion engine.
The engine provide the lowest fuel consumption per horsepower per hour – 140-150 grams.
The highest mechanical efficiency over – 90%.
The smallest metal consumption per horsepower and thus the lowest weight of the structure.
The lowest atmospheric emissions.
All news you can see on our channel in YouTube: youtube.com/user/todornicolov1
Kolev Motors
Is this how people increase engine displacement?
it is this part of the engine restoration that made me fall in love with the automotive world
Good video for basic idea but not entirely accurate.
Would of been good to mention the benefits of a torque plate bore but I guess it is a basic engine building video.
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