How to free a stuck piston from an engine block. EP4
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- Опубликовано: 3 авг 2024
- In this episode we work on removing our stuck pistons from the L26 engine block of our 1974 Datsun 260Z.
We test out and review Metal Rescue by Workshop Hero. You mix the contents of the container with one gallon of water. *This is not a paid advertisement*
Parts Used:
Metal Rescue - amzn.to/2xQy5K
Previous video: • Drivetrain assembly on...
Datsun Z parts comparison site: www.datsunpartz.com
260Z build playlist - • Datsun 260Z Build
Previous 240Z build playlist: • 1973 Datsun 240z suspe...
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Music:
Adventures by A Himitsu / @ahimitsu Creative Commons - Attribution 3.0 Unported- CC BY 3.0 creativecommons.org/licenses/b... Music released by Argofox • A Himitsu - Adventures... Music provided by Audio Library • Adventures - A Himitsu...
Outro- Joakim Karud / joakimkarud 
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For really stubborn engine that's been sitting in wet weather for long time ......try this ! Heat your liquid to almost boiling and pour over your piston and let it sit for about a week . Work every time for me ! I recommend doing everything outdoors .
Even when an engine is stored under cover it can rust. I just bought an engine that was said to have been stored 40 years in a shed but was seized solid. It only had minor surface rust but the pistons had to be bashed out with a heavy hammer. I think hot air gets expanded out in the day and moist air gets sucked in at night.
My L28 was locked up when I bought my Z. I was advised to use Marvel Mystery oil, which worked but took a few days and reapplications too. Had never heard of Metal Rescue before this. I’m looking forward to watching you build this motor. I’m going to do my first engine rebuild and Curt your vids are going to really help me ...thanks a bunch. I like your calm cool demeanor even when things aren’t working out,
+Av8ferg right on! Let me know how the build goes! Appreciate your support and watching!
How many days did you let the marvel mystery sit .
@@rocksev21 I think it was about 24 hrs.
I put MMO where there were frozen pistons in a backhoe engine 3 months later...no change still frozen..
Once broken loose you can also use a dingleberry hone (Flexhone) to remove the rust and pull the piston out.
That’s a good idea!
1:54 we will be boring.
I was looking away and i shut the vid and now im back. I thought you mentioned the rest will be boring😁
+Mixun automodit / thedudegamer haha! I’m glad you came back!
i know where a complete l28 is for cheap in tx
and thanks i got a locked up sbc in a boat im try that on
i was thinking about a diluted hydroelectric acid but this seems much safer on the rest of engine id rather not have eaten away
Straight to Valhalla all shiny and chrome
soak em in diesel next time, you won't be disappointed. it penetrates and lubricates
I’ve heard this, possibly add a little ATF? Also I heard people light it on fire which I didn’t want to do. Thanks for watching!
@@CarsBikesandCoffee was also gonna mention that heating the block up helps as well, I believe it was mustang289? And junkyard digs in combo that used that method
how are you planning to fix the rusted head bolt threads? I cleaned mine using an ARP thread chaser, but would you have to go up a size for yours if theyre in really bad condition? or just use inserts for that as well?
+Carlos Mendoza once the block is cleaned at the machine shop I’ll got through it. At first inspection the threads appeared okay. I will for sure chase all the threads and hopefully won’t have to repair them. Fingers crossed!
Setting it on fire will do the opposite of freeing the piston up,heat expands metal
+Jeff Elder no fire here. Did I mention something in the video?
If ya get another seized, rusted engine be nice to see u try electrolysis to clean them up and loosen the pistons, have seen this method done on a stripped block, but not s seized one
Nice job on unseizing this one tho.
Thanks! I’ve done electrolysis on smaller parts, but it would be interesting to try on a block.
@@CarsBikesandCoffee yeh check out the vids. Best way seems to be putting the biock in vertically, eg in a barrel, uses less water
I have a mud pump cylinder from 1890 and I cannot remove piston . It is 1 inch thick and 7 inches in diameter. I need a help. It is a duplex mud pump cylinder from Gardner Denver.
I'm lucky my L26 wasn't locked up. even got it to turn and fire with the huge vac leaks it has.
+Arman Kordi that’s awesome!
My B30 engines cylinders are completely stuck, their not even as rusted as yours. Wonder why? The block has been laying out in a forest for 15 actual years BUT I did get one of them out with a sledgehammer.
Maybe try this?
Really enjoying your videos, but I about go deaf every time your outro music comes on! lol
+jmmcches hey thanks for the feedback. I’ll get those gains turned down for future videos. I appreciate you watching!
Easiest way to free up stuck pistons is to put about 1" of diesel fuel in the cylinders and light it with a torch. Let it burn out and tap the pistons out easy. Takes about an hour and cheap. Lol.
Looks like a young fryburger
+MiniDak whoa, I am have a doppelgänger!
you could have used canning vinegar 10%
+leo abney that’s a great idea. Next time I’ll give it a go if it comes up.
Works great and cheap as hell
You better put dual intercooled turbos on that Datsun or I'll hate you. And a Gatling gun. If the Gatling gun is beyond your finances and skill then at least a 60 mm low pressure gun.
Feverishly taking notes… 🤘🏻🔥
Why not soak with vinegar it's well known to dissolve rust
I would be willing to bet vinegar would work very similar.
Why not use no. 400 sandpaper to remove the rust instead of a metal knife??
In the case it was to help get out the piston and it will need to be over bored because of the putting so it wasn’t too much of a concern
@@CarsBikesandCoffee ok. I guess that does make sense. I am working on an engine myself. I has not run for probably 3 decades and as you could bet, the pistons are seized to the wall. Do you think the metal rescue would to free the piston? I have tried a generous serving on WD 40 and some hammer treatment. Won't budge. Any suggestions. I'm new to all of this.
@Mike Bolton yeah it’s worth a shot. One of these pistons was totally stuck. Have the block checked by the machine shop for cracks too. This one is getting that all done as we speak (finally 😂)
@@CarsBikesandCoffee I guess I will try that then. It's a two stroke motorcycle so removing the pistons is sort of how to take the engine apart. Have fun with your project!
@Mike Bolton awesome, keep me updated!
you probably shouldn't have watered down the rust Eze
Can I use WD40?
In this case the rust stuck a couple of the pistons. So this was able to eat away enough of the rust to free it up. If there was minimal rust and just tight, WD40 might work.
is this guy whispering? im wearing headphones i cant hear...
Thanks for the feedback, always looking for ways to improve my videos.
Smash it out needs machine work anyway. Cast pistons will shatter like glass
That’s the fun way for sure. Thanks for watching!
Get a reman and end it !
+Bill if you didn’t want or need to keep a number matching engine with the car, sure.
Easier just to break the pistons.
Where’s the video in that? 😂
I cant hear you...
I’ve been working on the mics I use and getting the volumes just right, appreciate the feedback