Compression Test- Pleasant suprise

ShawnAgne

ShawnAgne

501 Club
Well I ran a dry and wet compression test just to see if my hypothesis was correct which was- The previous owner had rebuilt the engine and possibly put the domed pistons in it. Reason being the engine didn't have oil/grease dirt on it. Wasn't much on the tractor but the engine was completely clean.

Cylinder# - wet/dry
#1 152/161
#2 130/140
#3 155/170
#4 150/160

Based on those numbers I have the domed pistons and basically a 230 motor in my 200. Since #2 increased 10 like the others the valves have to be a little tight. Going to go back and check the valve lash then retest.
Question is there a way to tell a 230 manifold from a 200 manifold?
 
As I recall, there was some difference that came along with the 130/230. I think the air cleaner outlet was lower, possibly because of an increased length of the intake manifold inlet.
 
I think the 230 intake manifold has a slightly larger bore opening, but honestly the easiest way is to check the casting number on the manifold itself. Should be stamped right on there. Someone on here probably knows the exact numbers better than I do!
 
Ashhh said:
I think the 230 intake manifold has a slightly larger bore opening, but honestly the easiest way is to check the casting number on the manifold itself. Should be stamped right on there. Someone on here probably knows the exact numbers better than I do!
Click to expand...
Yeah I just looked and I can't see the casting number. However I compared the one on the 200 with the manifold on my 100 and they look the same. And looking at pics online pretty sure its the 200.
 
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