Your engine is from a power unit with the dipstick ect. They made a lot of changes in heads size of the hole where sparkplug goes deeper for sparkplugs size of the combustion chamber but the big item is the size dome on your new pistons some have different domes that engine was made from 39 till like 51 when waterpumps ect were added. I like to go with cast codes i have a bunch of heads and putting them side by side you can see the small changes that were made even got some distillate pistons if someone would want.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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