My 82 shovel is the 1340 cc engine which equals 82ci. Im looking at new motor parts and I see them for 80ci and 84 ci. Which ones do I buy?

 

The 1340 cc engine is generally considered as an 80 ci displacement.

 

ok. thanks

 

if your buying pistons you need to see what is in it before you order them as some people dont take them back after you get

the odd numbers you are seeing is the over bore like .010 - .020 - .030 - an 80 inch after .030 is getting very thin they make an .040 but i dont install pistons in 80 inch that large in a stock barrel -- jz

 

Well lets say I was looking for new pistons. My engine is 1340cc which is 82ci. So what im hearing is buy pistons for an 80ci motor but then there are other numbers to look for also? How do I see what they are on the piston? And Im assuming if these were stock pistons, there would be no extra numbers?

 

As was stated, your 1340cc is considered an 80ci, even through it is 81.77ci; HD just rounded down to 80. Whereas a 1200cc is called a 74ci, though it is 73.23ci.

If you are purchasing new pistons, then you need to know what you have. The current bore of your cylinders, and what bore you will be going to clean up the cylinders. This will determine what oversize pistons to go with.

 

The cylinders actually look really good. The piston heads have a bunch of carbon on them but I think I can re-use them after cleaning them. The cylinder heads on the other hand dont look too hot. I will post some pics of what everything looks like. But in the earlier example, how do i know what the bore of my motor is?

Sorry for sounding new, but I am really new to engines. This is my first time taking a motor apart so I really just dont know what Im looking at when i see it.

 

the top of the piston will have what size they are if you dont have the tools to measure them - you will have to clean the tops of the pistons - paint stripper will work and dont leave it on too long maybe an hour - gloves and a razor blade will peal off the crust - caution scraping it will remove the numbers on the piston top - let the srtripper do the job

in a shop we use a glass bead machine but unless you have someone with one the stripper is the only way

 

also you do need some measuring tools. you need to measure bore taper and the bore to know if you will have to go bigger to clean everything up. this isn't for someone that has never done this, unless you have a machine shop lined up to do that part of it. if you just slap new parts back in without doing these things then you are just wasting money, and shouldn't have touched the motor to start with.

 

Most reputable shops don't charge for measuring if they will do the over bore after you buy the right pistons. Otherwise it's minimal charge to measure for you. Joe