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Old 05-05-2008, 09:27 PM   #1 (permalink)
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pull pistons without removing engine???

On some trucks you can remove oil pan and pull the pistons to change the rings, without pulling the motor. can you do this on a lifted 1983 4x4?? nebody tried or done it?
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Old 05-05-2008, 09:35 PM   #2 (permalink)
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I dont think so... Pretty sure the crankshaft is in the way. If your going to replace the rings why wouldnt you just replace the gaskets and bearings right away


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Old 05-05-2008, 09:39 PM   #3 (permalink)
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I dont think so... Pretty sure the crankshaft is in the way. If your going to replace the rings why wouldnt you just replace the gaskets and bearings right away


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Yes you can. But by the time you get the motor that far--your better off pulling the motor. The time spent working around the vehicle--your better off spending a lil time to yank it and throw it onto an engine stand..
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Old 05-05-2008, 09:47 PM   #4 (permalink)
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Huh so I learned something new I didnt know you could just swap rings on 22re's. Still sounds like a PITA.
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[QUOTE=FLEXYSAMMY;13977957]Yes you are correct Eric.[/QUOTE]
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Old 05-05-2008, 09:48 PM   #5 (permalink)
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Huh so I learned something new I didnt know you could just swap rings on 22re's. Still sounds like a PITA.
It is..............
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Old 05-05-2008, 09:51 PM   #6 (permalink)
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Originally Posted by 1983yota View Post
On some trucks you can remove oil pan and pull the pistons to change the rings, without pulling the motor. can you do this on a lifted 1983 4x4?? nebody tried or done it?
Sure!

1. Remove oil pan

2. Start engine

3. Pistons "pull" themselves. Sometimes one gets stuck and it's hard to get the rest out though.
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Old 05-05-2008, 10:31 PM   #7 (permalink)
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It can be done. I did it about 17years ago on my 82 lifted truck. Everything worked great until something let loose about 2 weeks later, because I was trying to save time. So I saved all kinds of time sitting at home not wheelin because my motor became a convertible. The main reason I did it was because of the smog on the motor. I did not think I could get it back together right. In the end I had to switch motors and I still screwed up the smog on the carb. Do it right or do it twice, the choice is yours.
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Old 05-06-2008, 01:48 AM   #8 (permalink)
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i did it on an 87 unlifted ifs 2 years ago and its still running just fine. i did an entire inframe rebuild. dont think it saved me any time or was any easier but it can be done. just sucks sitting on fenders all day
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Old 05-06-2008, 07:34 AM   #9 (permalink)
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I wanna know how the hell you get a ring compressor in from the bottom to reinstall? Sounds like a good way to waste a lot of time. Just pull the motor and do the job right. I see people wasting 3 hours trying to save 5 minutes.......
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Old 05-06-2008, 07:44 AM   #10 (permalink)
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It can be done. I did it about 17years ago on my 82 lifted truck. Everything worked great until something let loose about 2 weeks later, because I was trying to save time. So I saved all kinds of time sitting at home not wheelin because my motor became a convertible. The main reason I did it was because of the smog on the motor. I did not think I could get it back together right. In the end I had to switch motors and I still screwed up the smog on the carb. Do it right or do it twice, the choice is yours.
I call BS. No way you can do it with the head on.

I think the OP was talking about leaving the block in engine compartment, which you can accomplish, but you would still have to pull the head to R&R pistons. It is a pain in the ass, and not the way most guys would do it, but it is possible and may be necessary depending on your situation.

But to do it like you said is impossible, or at the very least impractical to the degree of being retarded. Even if you could figure out how to get the compressed rings and pistons installed from the bottom, there is no way they are gonna clear the crank.

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Old 05-06-2008, 08:52 AM   #11 (permalink)
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I call BS. No way you can do it with the head on.

I think the OP was talking about leaving the block in engine compartment, which you can accomplish, but you would still have to pull the head to R&R pistons. It is a pain in the ass, and not the way most guys would do it, but it is possible and may be necessary depending on your situation.

But to do it like you said is impossible, or at the very least impractical to the degree of being retarded. Even if you could figure out how to get the compressed rings and pistons installed from the bottom, there is no way they are gonna clear the crank.
Crank came out to put the pistons in. Used a ring compressor the same way just from the bottom. I believe a connecting rod came loose and put holes in both sides of the block. We never took it apart to see exactly what happened. I did not know very much about engines at the time, I was a stupid 18 year old kid. I agree with your comment about impractical to the degree of being retarded, but it is not BS. Just my 2 cents.
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Old 05-06-2008, 10:36 AM   #12 (permalink)
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Hell they even have portable cylinder honing machines. Only works on 4 cyls, they take the head off, take the pan off, and do a half ass rebuild. Doesn't make sense to me, they replace everything except the main bearings.
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Old 05-06-2008, 12:29 PM   #13 (permalink)
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Crank came out to put the pistons in. Used a ring compressor the same way just from the bottom. I believe a connecting rod came loose and put holes in both sides of the block. We never took it apart to see exactly what happened. I did not know very much about engines at the time, I was a stupid 18 year old kid. I agree with your comment about impractical to the degree of being retarded, but it is not BS. Just my 2 cents.
i will gladly go take pics to show you that the pistons get hung up on the crank journals if you try to pull them through the bottom on a 22r. now a 20r might be different? not sure but i know for a fact on all the 22rs ive seen (even stock bore) will not clear the main bearing journals. so i would call bs x2
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Old 05-06-2008, 12:41 PM   #14 (permalink)
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So I called my buddy who helped me do this many years ago and he verified that I am a dumbsh*t. I guess we did pull the head and the pistons came out the top. We left the carb on the manifold. I somehow remember it the other way. We also never removed the crank. So with only a dozen or so posts on Pirate I am officially a dumbsh*t. I would hang my head low and never come back but I just bought a 87 4runner that is a donor for my future FToy build. So here I will stay and get ready for the flaming that I deserve!
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Old 05-06-2008, 01:24 PM   #15 (permalink)
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On some trucks you can remove oil pan and pull the pistons to change the rings, without pulling the motor. can you do this on a lifted 1983 4x4?? nebody tried or done it?
- drain oil and drop pan
- pull head (the hardest part, of course)
- remove rod caps(?) and bearings
- from below, push pistons out with wooden dowel or broom handle

I did a 'partial' rebuild (rings, valves, chain, guides only) on my 22R about 10 years ago, and its been running great ever since.
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Old 05-06-2008, 04:48 PM   #16 (permalink)
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right on thanks for the answers!!
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Old 05-06-2008, 06:08 PM   #17 (permalink)
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if you were to disassemble the engine that way im pretty sure you can lift the bottom end out by yourself with no hoist if you remove the tranny first which you have to do anyways. i watched a buddy of mine pull one (block minus head , tranny and flywheel) and lift it up onto the core support by himself where i held it for him untill he could get out and then we lifted it onto the ground.... gotta love u pull yards!

im pretty sure getting it back in would be a little trickier but im sure you could do it, those blocks dont weight shit
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Old 05-06-2008, 06:14 PM   #18 (permalink)
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I rebuilt a chevy van in-frame a long time ago and it was a pain in the ass. And I didn't do it right. And I was an 18yr old dumb$hit. I did roll the mains into it from beneath, though. And I did it for rent money. So hah! I have 5 posts now........
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Old 05-06-2008, 06:36 PM   #19 (permalink)
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so where are all the fuck faces who gave me shit for telling someone a while back that this could be done? someone asked, i replied, and instead of giving him shit they called me a retard. when i pull my pistons out the motor will be on a stand. so come on bitches, tell us how the crankshaft will be in the way again...
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Old 05-06-2008, 07:08 PM   #20 (permalink)
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retards are right every once in a while

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Old 05-06-2008, 07:41 PM   #21 (permalink)
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so where are all the fuck faces who gave me shit for telling someone a while back that this could be done? someone asked, i replied, and instead of giving him shit they called me a retard. when i pull my pistons out the motor will be on a stand. so come on bitches, tell us how the crankshaft will be in the way again...
I "think" that even with the crank removed the pistons still won't come out the bottom. The main bearing journals are still in the way as this guy said.

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i will gladly go take pics to show you that the pistons get hung up on the crank journals if you try to pull them through the bottom on a 22r. now a 20r might be different? not sure but i know for a fact on all the 22rs ive seen (even stock bore) will not clear the main bearing journals. so i would call bs x2
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Old 05-06-2008, 07:47 PM   #22 (permalink)
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well you could always clearence the block with an angle grinder and a masonary cut off wheel.....
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Old 05-06-2008, 07:59 PM   #23 (permalink)
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I "think" that even with the crank removed the pistons still won't come out the bottom. The main bearing journals are still in the way as this guy said.
si. but i never said pull the pistons from the bottom. i just said they can be r+r'd without pulling the motor. i never even said pull the crank. just the head and rod caps and out comes the pistons. so yes, it can be done.
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Old 05-06-2008, 08:01 PM   #24 (permalink)
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well you could always clearence the block with an angle grinder and a masonary cut off wheel.....
that would take too long. just torch the journals out and j-b weld them back in after piston replacement.
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Old 05-07-2008, 07:15 AM   #25 (permalink)
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so come on bitches, tell us how the crankshaft will be in the way again...
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si. but i never said pull the pistons from the bottom. i just said they can be r+r'd without pulling the motor. i never even said pull the crank. just the head and rod caps and out comes the pistons. so yes, it can be done.
I think half the guys on this post are talking about pistons out through the bottom(which we all know won't work), and the other half is talking about pulling the head.

After reading your posts, I'm still not sure which camp you are in
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