Piston-Piston Rings-Connecting Rods Installation and Assembly . Toyota L Engine Guide

Piston-Piston Rings-Connecting Rods Installation and Assembly

The piston, piston rings, oil rings, and connecting rods are parts that should be installed and connected to each other before it will be inserted into the block.

In installing or assembling these parts be sure to wet it with oil. The purpose is that on the first crank of the engine the engine oil is not yet distributed to the engine parts.  At least before the oil reaches all the moving parts there is lubrication provided so it will not immediately get hot.

Here are the parts

Piston-Piston Rings-Connecting Rods Installation and Assembly-Toyota L PistonThe piston


Piston-Piston Rings-Connecting Rods Installation and Assembly-Toyota L Piston RingsThe piston rings and oil ring


Piston-Piston Rings-Connecting Rods Installation and Assembly-Toyota L Piston PinsThe piston pins


Piston-Piston Rings-Connecting Rods Installation and Assembly-Toyota L Connecting RodThe connecting rod


Tools to use in assembling the parts

There is only two that you needed.  It is the snap ring pliers that you use in placing the rings and the piston ring installer pliers.

Piston-Piston Rings-Connecting Rods Installation and Assembly-Snap Ring Plies

Piston-Piston Rings-Connecting Rods Installation and Assembly-Piston Ring Installer Pliers




Watch the video on how all the parts are placed.


It is such important to be careful enough in placing all the parts.  Remember the piston has marks and that is according to arrangements when inserted in the cylinders.  Observe the dots on the images below.


Piston 1 with no mark


Piston 2 with one dot


Piston 3 with two dots


Piston 4 with 3 dots


Not only the piston has marks, but the connecting rod also has.  If you are keen on observing the marks such as dots you will never be mistaken to pair the right piston with the right connecting rod. And of course, you will not also be mistaken in the insertion of right pistons on the right cylinders of the block.

Cylinder 1 must be the nearest in the front of the engine.  It is the nearest to the camshaft timing gear and cylinder 4 must be the nearest to the transmission.


With that hints to bear in mind, you won’t waste time disassembling the engine when you come to your senses that you have not been conscious enough to observe marks provided by the manufacturers as the guide in assembling after doing an overhaul.

If you have followed the guide you will save time and possibly save resources to be incurred through errors.

You can find additional helpful information on this website page.

Thank you again and I hope I have helped you in some way.  If you have any question, comments, and observations please feel free to leave it in the comment box and I’ll be willing to get back and answer you as soon as I read your message.


16 thoughts on “Piston-Piston Rings-Connecting Rods Installation and Assembly”

  1. Thanks for the guide. I love the simplicity at which you write and your willingness to help. Perhaps I wouldn’t have paid so much in fixing my car if I had being equipping myself with information/knowledge like this. Once in a while, one should check the piston and some other part of the car, to avoid future problems. Awesome write up.

    • Thanks, faftop for dropping a comment. There is only one way to check these parts and that is to have your engine opened. This work only comes when there is really a need to do so. 

      These simple steps can be done during an engine overhaul because it’s necessary to have it done to address issues on the engine.

  2. This is an interesting read. I didn’t know that you had to wet the pistons and rings with oil prior to installing them into the engine block – I mean it might sound second nature or common sense but it goes to show you sometimes you do need a professional to do this type of work. Specially if you have never done this before, thank you for sharing.

    • Thanks, Paul. You were struck by a common idea and yes, simple things sometimes can be put aside as important. I never thought that way before since I’ve been observing most of the technicians do it until I asked myself, why do I have to do that?

      If we buy replacement parts some are already drenched with lubrication but there are those that are not and pistons and piston rings are not usually for that. A newly oversized cylinder is a bit rough and it should be wet with oil so with the piston rings and piston pins.

  3. Very engaging read this was for me. I love the simplicity at which you deliver this write up coupled with the video. Getting acquainted with all these kinds of information give an excitement feeling knowing fully well that I wouldn’t need to waste more money when next I had an issue related to my piston rings. I learnt well through this post. Thanks for this.

    • It’s very important to be keen on the indicators and marks if there are any. Even the formation of an auto part can help us assemble in the right way and we can save time, effort and resources.

      Thanks for reading and joining the discuassion.

  4. Thanks, it was great information, I am studying mechanical engineering and I don’t even know to assemble the piston and connecting rod. This definitely will help me a lot because it is also related to my profession and I love mechanical stuff there are the most interesting, Thank you for sharing.

    • It is a basic principle that when disassembling and assembling parts of any machine we have to look into the marks, indicators and even the position.

      Many if not most of the pistons, piston rings, and connecting rods were manufactured with marks and indicators to keep the technician from the erroneous assembly.

      Thanks for reading and I hope this helped you and given you added knowledge related to your course.

  5. I like to thank you very much for taking your time to put all of this together. You have covered everything that I need to know and much more about assemble and install an engine. It must have taken you a long time to comply and write.

    Maybe this weekend I will start to work on father’s engine and figure out if I can assemble it with out error.

    Definitely worth bookmarking this page for future use. I will definitely comeback here for reference.

    Wish you all the best,

    • Thank you, Samm for appreciating this article and I hope you will apply the principles you’ve read. It is important to be keen of the marks and indicators of auto parts when imstalling to avoid a waste of time and money.

  6. I have watched the embedded Youtube video and even though there’s nobody talking or narrating, one can easily understand the task being done. My brother-in-law owns a machine shop for repairing vans, he’s getting a lot of local customers here. I think I’m gonna show him this video when he gets home this evening.

    I agree with you, it is important to wet it with oil. And not just ordinary oil, but use high quality oil. I learned from a friend that if the oil used in this process is of low quality, the super hot temperature may cause chemical reaction with the oil forming particles and deposits, which later can produce gap between the ring and the cylinder wall.

    • Thanks, Gomer if you will share this information to anyone. I know your brother kniws about it.

      Yes, the quality of oil you will use in the engine will be the one to be used. If possible the nest oil. The purpose of this is to ensure the new parts will not rub each other without lubricant when the engine is started.

  7. It is an interesting review! It saves a person a lot of money to learn this information about the car’s engine. I like to share it with my family and friends because sometimes small things will solve the problem. Thank you for sharing every step on the procedure, especially the video.

    • Thank you, Sam for your interest in sharing this information to your family and friends. I hope you will because it’s really important to be critical of the rigjt installation of auto parts.

  8. Hello friend, thank you very much for sharing an important article about piston. I have my own private car when the car breaks down, so much money is spent to repair it. There are so many benefits that we have shared with us about piston. I did not know that you had the pistons and rings with oil before installing them in the engine block. Once in a while, one should check the piston and some other part of the car, to avoid the future. Thank you very much for sharing such a beautiful article.

    • Thank you very much for your interest in the discussion on how to install a piston, piston rings, and connecting rods. It is nevessary to keen about the indocators and to follow it if ever there are.

      When parts are misinstalled it will be more time consuming and expensive.


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