Go Karters have to pass the AKRA Spec for engine displacement . The AKRA rule book explains the inspection performed by the "Tech man" . Why don't you do a video of that ?
I'd draw attention to you correctly using the merest smear of grease to seal the plate - there are some "professional" folks posting that use relatively thick coatings and this can give inaccurate numbers. For example, a 4" (101.6mm) bore engine has a bore cross sectional area of 81.07 square centimeters and, as every ten thou' is 0.0254 cm, it doesn't take much to be inaccurate as even that example is going to give a 2.06 cc difference. The second thing is if you use a longer piece of perspex you can do several, or all, cylinders at once. use a head gasket to establish and drill where the head bolt holes are and you can drop bolts into them to hold the plate in place. When you've done that, you can drill the fill holes along the 'top' edge for easier filling.
Alcohol works great because it's easy to clean up and is inexpensive, however if you aren't quick, it can seep past the piston rings. ATF works well if you need a little extra time. Just be sure to clean it up well.
I’m rebuilding a 05 ski doo summit 800, My rebuild kit came with three different base gaskets for the cylinders. How do I measure this volume in accordance with the correct gasket?
I guess Im asking the wrong place but does anybody know of a trick to get back into an Instagram account..? I was dumb lost the password. I would love any help you can give me
@Lochlan Dominik Thanks so much for your reply. I found the site thru google and Im trying it out atm. Takes a while so I will reply here later with my results.
@Lochlan Dominik DAMN IT ACTUALLY WORKED! Literally got access to my IG password after ~ 40 mins of using the site. Had to pay 15$ but definitely worth the money :O Thank you so much, you saved my ass !
Hey I built Predator Motors my name is most wanted you could check us racing at Most Wanted vs. Reckless or you could go to Most Wanted Instagram Most Wanted performance
That's a Great question. Not every head is the same on multicyclinder engines. Most are close and miss it by one to three cc's. Just think for a few minutes on how much more it would cost you if they made sure every head was Perfectly the same cc or ci ( cubic inch on cars and trucks ). The V-Twin engine is harder to make it an exact copy from one head to its twin other because of left and right molds if its a poured or even billet milled and will come with in 0.001 to 0.003 if and inch making the cc a bit harder to exactly match at any factory.
@@hellishgrin4604 When you tune an engine, you mainly go by the #1 cylinder. If all the cylinders match, then all the cylinders will react to the tuning of # 1 cylinder the same way. Hard to do if every cylinder on one engine is different.
What about the space from the top of the piston... I have a book that says to bring the piston to TDC, seal the edges with grease, fit the head and gasket, and measure that way. Your way seems to be a simpler way... but will the measurement be off? I'm learning as I go here. It started off as a simple bore kit upgrade and learning my parts of my moped to a complete tear down, upgrade, and rebuild!
The total unswept volume - the volume above the piston at TDC, is made up of several spaces, of which one is the cylinder head chamber, and this is the one that's usually got the variations as they're sand cast and the moulds may be slightly off. The top surface of the pistons are usually held to close tolerances, but there can be variations in the 'deck' heights of the block - this is the position of the piston relative to the gasket sealing face. The problem is that sometimes it isn't machined totally square with the crankshaft and/or bores and just a little off can make a significant difference - you have probably read of 'squaring the deck' to ensure the pistons are the same distance down the bores at TDC. On that, you may also have seen references of lower compression because of the pistons being further down the bore, and maybe even of machining the decks to increase the compressions. Sometimes different thickness gaskets are used to add, or subtract, unswept volume. NOTE, for V8 engines, because of the way the intake manifolds fit the engines, and the way the heads move relative to each other after machining, the manifold will normally also need machining.
@@gordowg1wg145 wow! Thanks for that response! He's me understand it a bit more. My moped projects have been on hold for a few months but I will get back at it and I want to learn all I can and some of this gets confusing. So I appreciate your words of wisdom. 😁😊
![How to Measure a Hole or Cylinder [HOLE GAUGE]](http://i.ytimg.com/vi/QXAckHGRCyI/mqdefault.jpg)
I like what your doing here man! Fellow texas creator here!
great video
Go Karters have to pass the AKRA Spec for engine displacement . The AKRA rule book explains the inspection performed by the "Tech man" . Why don't you do a video of that ?
I'd draw attention to you correctly using the merest smear of grease to seal the plate - there are some "professional" folks posting that use relatively thick coatings and this can give inaccurate numbers. For example, a 4" (101.6mm) bore engine has a bore cross sectional area of 81.07 square centimeters and, as every ten thou' is 0.0254 cm, it doesn't take much to be inaccurate as even that example is going to give a 2.06 cc difference.
The second thing is if you use a longer piece of perspex you can do several, or all, cylinders at once. use a head gasket to establish and drill where the head bolt holes are and you can drop bolts into them to hold the plate in place. When you've done that, you can drill the fill holes along the 'top' edge for easier filling.
Alcohol works great because it's easy to clean up and is inexpensive, however if you aren't quick, it can seep past the piston rings. ATF works well if you need a little extra time. Just be sure to clean it up well.
Hello good day what is the name of tools take compression ratio like u take because i won't to buy also but i dont no the name thank you
Hey I saw your video how to make a go kart and so expensive I was expecting cheap stuff
I’m rebuilding a 05 ski doo summit 800, My rebuild kit came with three different base gaskets for the cylinders. How do I measure this volume in accordance with the correct gasket?
You know the diameter and thickness of the gasket so you can calculate volume of each one and add it to the measured volume of head.
You still gonna supercharge a 212?
I guess Im asking the wrong place but does anybody know of a trick to get back into an Instagram account..?
I was dumb lost the password. I would love any help you can give me
@Arlo Blaze Instablaster =)
@Lochlan Dominik Thanks so much for your reply. I found the site thru google and Im trying it out atm.
Takes a while so I will reply here later with my results.
@Lochlan Dominik DAMN IT ACTUALLY WORKED! Literally got access to my IG password after ~ 40 mins of using the site.
Had to pay 15$ but definitely worth the money :O
Thank you so much, you saved my ass !
@Arlo Blaze no problem =)
Hey I built Predator Motors my name is most wanted you could check us racing at Most Wanted vs. Reckless or you could go to Most Wanted Instagram Most Wanted performance
We are going 90 miles per hour in a quarter
San mkkbili
Very nice
I do think CC the point.
Great video.
What engine is that head from?
Honda gx390
Would all of the chambers not be the same volume in a conventional engine?
That's a Great question. Not every head is the same on multicyclinder engines. Most are close and miss it by one to three cc's. Just think for a few minutes on how much more it would cost you if they made sure every head was Perfectly the same cc or ci ( cubic inch on cars and trucks ). The V-Twin engine is harder to make it an exact copy from one head to its twin other because of left and right molds if its a poured or even billet milled and will come with in 0.001 to 0.003 if and inch making the cc a bit harder to exactly match at any factory.
David Johnson So what’s the benefit of knowing this?
@@hellishgrin4604 When you tune an engine, you mainly go by the #1 cylinder. If all the cylinders match, then all the cylinders will react to the tuning of # 1 cylinder the same way. Hard to do if every cylinder on one engine is different.
What about the space from the top of the piston... I have a book that says to bring the piston to TDC, seal the edges with grease, fit the head and gasket, and measure that way. Your way seems to be a simpler way... but will the measurement be off? I'm learning as I go here. It started off as a simple bore kit upgrade and learning my parts of my moped to a complete tear down, upgrade, and rebuild!
More than one way to skin a cat
The total unswept volume - the volume above the piston at TDC, is made up of several spaces, of which one is the cylinder head chamber, and this is the one that's usually got the variations as they're sand cast and the moulds may be slightly off.
The top surface of the pistons are usually held to close tolerances, but there can be variations in the 'deck' heights of the block - this is the position of the piston relative to the gasket sealing face. The problem is that sometimes it isn't machined totally square with the crankshaft and/or bores and just a little off can make a significant difference - you have probably read of 'squaring the deck' to ensure the pistons are the same distance down the bores at TDC. On that, you may also have seen references of lower compression because of the pistons being further down the bore, and maybe even of machining the decks to increase the compressions.
Sometimes different thickness gaskets are used to add, or subtract, unswept volume.
NOTE, for V8 engines, because of the way the intake manifolds fit the engines, and the way the heads move relative to each other after machining, the manifold will normally also need machining.
@@gordowg1wg145 wow! Thanks for that response! He's me understand it a bit more. My moped projects have been on hold for a few months but I will get back at it and I want to learn all I can and some of this gets confusing. So I appreciate your words of wisdom. 😁😊