Micro welding of the oil control ring can create the stress required to crack the piston at the weakest point, being the bottom of the ring groove. I lost a chunk of piston on a Volkswagen Golf when excess gas washed the oil off the cylinder walls. Just a thought.
Well , Zippo, I didn't click you off ,and I learned two very important tips in just 5 minutes . And your talk sounds really interesting to me. Thanks a lot !!!
I liked it a lot. I broke a wristpin in a ford 390 from overreving and it held together for 150 miles but sure noticeable clacking. I am interested in all things piston after that. Good job.
oh the pain :) pistons crack (in my experience and opinion) because they received an impact or detonation. Ether starting fluid meant for diesel engines kept us in stead work for a while until the customers learned that it cost more to fix things afterward than to bring the equipment into a warmer place and thaw it in order to get it cold started.
aka Grinchey One. BTW Zip, I found out last week, That super machine shop is still in place (same management?) now segregated behind a soft-pretzel bakery. Thanks for the memories!
Thanks zippo. Another great video, and about your" babbling" everytime you post a video I always pick up great information. So keep them coming and keep on babbling
I assume you're talking about the 23D piston that is cracked. The piston is in as removed condition, and there was little to no carbon build up on it. Another possibility was that there was a mouse nest in the engine shroud, preventing sir flow across the engine, causing the piston and rings to over heat, closing the ring gap and then causing the piston to break. Much like adding nitrous to a stock engine with stock ring gaps. Runs much hotter, so gaps close up and you break pistons. But, I have had instances where carbon build up combined with dirty cooling fins has caused pistons to seize and break connecting rods. So either is definitely possible! Good Thinking! Zip~
Excellent question Chris! When ever I run into stuck rings, I use a mixture of 1 part transmission fluid and one part mineral spirits. I put enough in the cylinders to ensure the mixture covers the whole piston. Usually a couple tablespoons will do it and if you can angle the bike so the cylinders are sitting horizontal, it works best. On V type engines, I'll soak one cylinder with it level then the next with that one level. I let it soak in the cylinders for a few days, then I spin the engine over a few dozen times with the ignition OFF so the engine has no chance of starting. I do this with the spark plugs out and shop towels over the plug holes. Then it's very important to change the oil, as some of this mixture will get into the crank case. Don't forget to change the oil filter as well. Top off with fresh oil and recheck compression. If the numbers are higher, start the engine and get it up to operating temp by varying the speed of the engine for about 15-20 minutes. If it's an air cooled engine, have a blower fan blowing across the front of the engine while running it. If you wish, you can ride the bike around for 15-20 minutes. Let the bike cool down and repeat the compression test. Good Luck Chris! Zip~
81 gs550l sat in my backyard,12yrs+so far $500 into it,two cylinders 90psi,the other two 150.Tried mystery oil sat for 4 days,tried seafoam.triing mystery oil 2nd time now if it doesn't work will try ur suggestion thanks
To date, I've never encountered an engine that forces you to remove the piston from the top. When I come across one, I'll make a video showing how I went about removing it. Cheers! Zip~
I maintain, you can move the piston down into the bore, but removal is another story when trying to remove from the top. The connecting rod and piston are connected by the wrist pin and the length of the piston and connecting rod are too long to remove the piston from the top of the engine as a whole unit. Then, if there IS enough room to snake the assembly out through the crank case, you must remove the cam, lifters, governor and crank shaft. Zip~
Tracty Zadorozny Yes I did! I posted a video after I got it removed. Took about 5 minutes of heavy wailing on it, but it came out and the bore was toast, so the block went to the scrap Gods. Zip~
RagaMuffyn Garage Thanks SIr Hambone! I enjoy getting off topic and some enjoy the ride along with me. It's like taking the scenic route to a destination...you enjoy the ride instead of just the destination. I think that's the problem with the younger generation...they want to get there, not enjoy the ride. A shame really, since the ride is often better than the destination! lol Cheers my Friend! Zip~
Micro welding of the oil control ring can create the stress required to crack the piston at the weakest point, being the bottom of the ring groove. I lost a chunk of piston on a Volkswagen Golf when excess gas washed the oil off the cylinder walls. Just a thought.
Well , Zippo, I didn't click you off ,and I learned two very important tips in just 5 minutes . And your talk sounds really interesting to me. Thanks a lot !!!
I liked it a lot. I broke a wristpin in a ford 390 from overreving and it held together for 150 miles but sure noticeable clacking. I am interested in all things piston after that. Good job.
I learned something from your video. Thank you,buddy
4:41 Instant thumb up 😺
Great video 😺
Good idea. Instead of an old piston, I use a hockey puck.
Great Tip !!!!!!! Babble on Brother , Its always informative !!!!!
I will forever triple check for cracks. I have never seen one so small.
Yep, then can be sneaky small cracks that make you scratch your head. Zip~
oh the pain :) pistons crack (in my experience and opinion) because they received an impact or detonation. Ether starting fluid meant for diesel engines kept us in stead work for a while until the customers learned that it cost more to fix things afterward than to bring the equipment into a warmer place and thaw it in order to get it cold started.
aka Grinchey One. BTW Zip, I found out last week, That super machine shop is still in place (same management?) now segregated behind a soft-pretzel bakery. Thanks for the memories!
Thanks zippo. Another great video, and about your" babbling" everytime you post a video I always pick up great information. So keep them coming and keep on babbling
tractorman604 It's great to hear from you 604! And I will keep on babbling! Haters Beware! lmao Cheers!! Zip~
Looks like the cyl got carboned up, ring got stuck on the piston and broke or broke the piston itself.
I assume you're talking about the 23D piston that is cracked. The piston is in as removed condition, and there was little to no carbon build up on it. Another possibility was that there was a mouse nest in the engine shroud, preventing sir flow across the engine, causing the piston and rings to over heat, closing the ring gap and then causing the piston to break. Much like adding nitrous to a stock engine with stock ring gaps. Runs much hotter, so gaps close up and you break pistons. But, I have had instances where carbon build up combined with dirty cooling fins has caused pistons to seize and break connecting rods. So either is definitely possible! Good Thinking! Zip~
Good vid, thank you 🙏
Dude your great I loved that video
nice vid I enjoyed and learned, thanks
Now, If I only had a 23D piston hanging when I need one...
What do you recommend to unstick sticky rings in a motorcycle while it's still in the while the Piston is still in the bike
Excellent question Chris! When ever I run into stuck rings, I use a mixture of 1 part transmission fluid and one part mineral spirits. I put enough in the cylinders to ensure the mixture covers the whole piston. Usually a couple tablespoons will do it and if you can angle the bike so the cylinders are sitting horizontal, it works best. On V type engines, I'll soak one cylinder with it level then the next with that one level. I let it soak in the cylinders for a few days, then I spin the engine over a few dozen times with the ignition OFF so the engine has no chance of starting. I do this with the spark plugs out and shop towels over the plug holes. Then it's very important to change the oil, as some of this mixture will get into the crank case. Don't forget to change the oil filter as well. Top off with fresh oil and recheck compression. If the numbers are higher, start the engine and get it up to operating temp by varying the speed of the engine for about 15-20 minutes. If it's an air cooled engine, have a blower fan blowing across the front of the engine while running it. If you wish, you can ride the bike around for 15-20 minutes. Let the bike cool down and repeat the compression test. Good Luck Chris! Zip~
81 gs550l sat in my backyard,12yrs+so far $500 into it,two cylinders 90psi,the other two 150.Tried mystery oil sat for 4 days,tried seafoam.triing mystery oil 2nd time now if it doesn't work will try ur suggestion thanks
Yes good video good job see you next time
Thanks Ronald! Zip~
Great job thank you for the tip will try it
Nice trick, good info.
What if u have to get at it from the top
To date, I've never encountered an engine that forces you to remove the piston from the top. When I come across one, I'll make a video showing how I went about removing it. Cheers! Zip~
ZippoVarg when u take off the rocker box and smack the piston down the jug if u can't get at it from the bottom
I maintain, you can move the piston down into the bore, but removal is another story when trying to remove from the top. The connecting rod and piston are connected by the wrist pin and the length of the piston and connecting rod are too long to remove the piston from the top of the engine as a whole unit. Then, if there IS enough room to snake the assembly out through the crank case, you must remove the cam, lifters, governor and crank shaft. Zip~
Hey Zip did you ever get that piston out and what condition did the block turn out to be in
Tracty Zadorozny Yes I did! I posted a video after I got it removed. Took about 5 minutes of heavy wailing on it, but it came out and the bore was toast, so the block went to the scrap Gods. Zip~
Thanks zip
seafoam soak it , then run it and spray more seafoam into the intake, it will smoke like crazy.
good work!
Thanks...that piston had oxidized to the cylinder wall and still came out with just a few well placed whacks. Cheers! Zip~
Thanks for the info
get'tem Zip...babble on if ya like...it's your channel, like you say " turn the channel if you don't like it".
thx for the post!
RagaMuffyn Garage Thanks SIr Hambone! I enjoy getting off topic and some enjoy the ride along with me. It's like taking the scenic route to a destination...you enjoy the ride instead of just the destination. I think that's the problem with the younger generation...they want to get there, not enjoy the ride. A shame really, since the ride is often better than the destination! lol Cheers my Friend! Zip~
One year later..............................................................
??
Piston Slap
Not painful at all :-)