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Heres the piston

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Lanse

05-04-2008 18:22:44

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heres the remains of the piston i destroyed today. This kind of sucks. And how do i get rid of the ridge on the piston?? I am told that could have led to all this...

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Pycoed

05-06-2008 12:36:43

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Re: Heres the piston in reply to Joe(TX), 05-04-2008 18:22:44

Hey Lanse,

Having followed this thread closely with amusement , I've long ago come to the conclusion you're a troll.
Now you've had a laugh, so time to own up - come on, you owe it to the decent blokes that have tried to give you a hand.

Least you could have done is sent a picture of a believable piston - I've seen better pistons than that lying under a scrapyard dog, & you expect us to believe you had fitted that in the expectation it would run? Give me a break - you must be a sociology student, right? When you've got the O rings from Dick, try folding 'em up & using them on an Elastrator - someone will show you how it goes... :D

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Rootsy

05-06-2008 12:48:49

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Re: Heres the piston in reply to Pycoed, 05-06-2008 12:36:43

That's pretty harsh eh...
We were all young at one time. We all had to start some where. Very few of us were fortunate enough to have the opportunity to grow up in a professional shop with a mentor that knew what they were doing and in turn passing on knowledge. I was one of those fortunate ones...

Very few folks I know have the tools to properly put an engine together let alone the knowledge and skills. Especially at such a young age.
With experience comes knowledge and skill. Learning from hard painful mistakes is always an important part of the learning process. It just sucks on the wallet.

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Bendee

05-06-2008 03:43:35

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

You will have to measure the bore too see if it is within tolerances, If it is a sleeved motor then it maybe economical to buy new sleeves and use the old pistons. You could knock the sleeve and piston out as one then take piston out from the bottom.But don't use the sledge hammer again.

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Leland

05-05-2008 19:41:19

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Do you follow tool time very close ,and is your name really Tim .

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Sam from WA

05-05-2008 09:41:13

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

In my engine building toolkit, I ridge reamers, piston ring groove cleaners, torque wrenches, piston ring expanders and compressors, compression testers for both gas and diesel, cylinder hones of the dingleberry type and flat stone type, and some manufacturer specific tools. I use every one of the tools listed above every time I build an engine, but there are a few I really don"t need, but make the job easier. Good luck with your project.
Smash

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jose bagge

05-05-2008 04:30:02

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Lanse- two things that this photo bears discussion on:
1. the use of force- remember, and engine is supposed to RUN. If it takes that much force, STOP- something is wrong. If you are beating on something, plan on replacing it- and most of the stuff connected to it
2. CLEAN EVERYTHING- I've seen pistons used as ash trays that look cleaner and better prepped than that one. When you assemble an engine, keep it clean- even old parts should shine like new. Clean the area you're working in- ya don't want any junk dropping into your new bottom end.This is mechanical surgery here- prep like it! Cleanliness doesn't cost anything- just your time.

Every guy here has probably hand sanded a ridge away and used an old peice of ring to clean ring lands- don't be afraid to use what you have at hand- but take your time and keep it clean!

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El Toro

05-05-2008 04:11:10

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

You should replace the sleeves, seals & pistons then you will have a new engine. Hal

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gene bender

05-05-2008 04:07:38

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

You need a ridge reamer to cut the lip on top of the cylinder wall to let the piston come out. No wonder you couldnt get the piston out. You wont be able to get the new rings on the pistons back in with that ridge there.

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Walt davies

05-04-2008 21:11:22

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Lanse if you have a lip that won't let the piston pass by then you will have to replace the cylinders or bore them out to the next size. Personally I would replace them and used the same pistons cost is somewhat less that way.
Walt

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Davis SC

05-04-2008 21:04:36

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Hang in there, Lanse... You are getting an education.. I can remember being your age, trying to fix things on limited funds, lacking all the right tools... Even though you have run into a few snags, I am impressed at how well you are going on your project.. When you get to feeling too frustrated, just walk away for a few hours or a day, rather than getting mad.. Things will go better, once you relax and think it over..

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TomTex

05-04-2008 20:15:21

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Lanse, I am really gald to see a young guy trying to learn how to rebuild an engine. However, from your questions/answers/current problems you really do need some help. You will probably have to start over on the whole engine, after reading and studying a Repair Manual for your engine. You will also need a decent set of tools. Is there no one near you that can coach you through this. I am afraid, the way you are going at this, that you will wind up with a trashed engine, and get very discouraged about your first lessons learned. And by the way, the ridge is not one the piston, it is inside the sleeve. Tell us the tools you have, what parts you have purchased so far, how it ran before teardown, etc. Just trying to buy one piston at a time is not going to give you a real workable engine. You need to assess (with some help) what is worn out, what to buy, etc. Keep trying, but slow up a bit and try to understand what you are doing before breaking things up too bad. Good luck Lanse, hope someday you are an ace mechanic. If you live near me, I would come to help you. Tom

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Old Roy agiin

05-04-2008 20:07:08

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Lanse.--Is that a hole on top of the piston ? I had a car one time, did one like that but it took gaskets out of top and bottom of engine.-Gas went down thru top of piston into oil pan and when it got the right mixture. KABOOM !! ---Like Tom in Tn says, I for one admire your persistance. Sometimes I have to walk away for awhile on a project just to calm my nerves.

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Lanse

05-05-2008 05:24:06

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Re: Heres the piston in reply to Old Roy agiin, 05-04-2008 20:07:08

no, theres no hole in the top of the pistons. That musta been interesting!!!

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old

05-04-2008 20:04:09

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Lance to do an engine rebuild you need a few tools to do so. #1 a ridge reamer. #2 a hone. # 3 a ring groove cleaner. #4 a torque wrench. Those are the min. tools you need. If you don't have at least all ot those you need to get them or you will be throwing good money after bad because you will blow that engine before it has 100 hours on it. Oh forgot #5 a ring compressor, which can be made from a good hose clamp by the way

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Lanse

05-05-2008 05:21:28

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Re: Heres the piston in reply to old, 05-04-2008 20:04:09

1) Ridge reamer-will have to get
2) hone-got cylenders honed out by someone with one
3)Ring groove cleaner looks like money well spent now
4)torque wrench-got that
5)ring compressor-got that too

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garytomaszewski

05-04-2008 19:14:07

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Maybe you should be glad that happened now could have been when you were running. The only time I've destroyed one like that was with a little (or maybe large) shot of nitrous.

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MarkinReno

05-04-2008 19:11:53

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

This is what I got with my JD M. I know it had busted before I bought it, but just today I see how badly it was broken. I never found the rod or pin in the last owners barn.

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Dick L

05-04-2008 18:56:17

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By The Way Lanse in reply to Lanse, 05-04-2008 18:22:44

You can have the block in the picture. I will knock the sleeves out and have it ready to install new or different ones.

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Lanse

05-05-2008 05:19:39

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Re: By The Way Lanse in reply to Dick L, 05-04-2008 18:56:17

Thanks Dick!!!! :-)

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Rootsy

05-05-2008 11:13:02

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Re: By The Way Lanse in reply to Lanse, 05-05-2008 05:19:39

Lanse,

In proper engine building etiquette...

1. Cleanliness is next to Godliness.

2. Measure 3 times, assemble twice.

3. Cleanliness is next to Godliness.

4. Do it right the first time or do it over sooner than you want to.

5. If it won't go, don't force it, think about it before grabbing a hammer.

6. If you aren't sure, measure it. Clearances are engineered to their respective amounts for a reason. Adhere to them.
7. Did I say cleanliness is next to Godliness?

It may take longer and may be more expensive to use good or new parts and make sure everything is perfect.. But you shall get out of it what you put into it.

The only saving grace of old iron is that they turn relatively low RPM and are strong for their stress level and therefore can get very sloppy before they just decide to lay their cookies down.

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Tom in TN

05-04-2008 18:53:21

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

Lanse,

I haven't had to ream a ridge out of a cylinder in a long time, but the last time I did so, I rented a ridge reamer from a local tool rental shop. Although the reamers aren't real expensive to buy, it might still be cheaper for you to rent one.

Good luck with your project. I think that everyone on this board admires your persistence.

Tom in TN

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jlmtractor

05-04-2008 18:48:29

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Re: Heres the piston in reply to Lanse, 05-04-2008 18:22:44

i dont understand what happened. how did it break? because of a ridge in the piston? i really dont understand

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Stockdale Dave

05-04-2008 18:54:22

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Re: Heres the piston in reply to jlmtractor, 05-04-2008 18:48:29

The ridge is in the cylinder sleeve..at the top. Lanse misspoke.

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Dick L

05-04-2008 18:47:08

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Here Ya Go Lanse in reply to Lanse, 05-04-2008 18:22:44

I have three different types but the one in the picture I bought somewhere around 1960. I bought the more expensive ones but go back to this one. this would be the cheapest today. The only problem with these is they will chatter until you learn how to operate them.

third party image

You set the cut with the top nut and cut with the bottom nut. Setting the top nut to tight is what causes it to chatter.

third party image Link loading="auto" style="width:auto;height:auto">

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