Need help building stock altered engine
 

I bought a 124 puller with a 16hp kohler and a wrecked clutch. I have since removed engine and clutch and have a list growing of parts needed to build it up. the hardest part is building up the 16 horse. I know I want to put aftermarket head,piston,rod,crank,cam,and carb on. but im not sure how to figure out the numbers. If someone could help that would be awesome.

Do you have a set of rules you can post for the class you want to run?

all engine parts must meet OEM dimensions and specs for size and location.
non stock ignition systems allowed
stock crankshaft stroke must be maintained
carb must be stock appearing max. air restricting ventri diameter 1.2 inch
maximum cam spec. .475 tappet lift for 16 hp
valve diameter 1.700 inch for 16hp
bore must be in stock location
a longer rod is allowed
must have steel flywheel
gas or alcohol can be used

and billet head allowed too, with piston popup allowed.

That is an interesting set of rules for a stock altered class. Here we would call that sport stock.

No popup allowed here for sport stock. Mike

I have a .020 over kohler piston and ring set new in box if interested PM me. They are for a k341.

im just not sure in what size crank and rod i want to use.

What do you mean? Rules say stock stroke crank is all that is allowed. Looks like you don't have much choice...... :bigthink:

After market rods are available in varying lengths to create piston pop out. JE and Diamond make after market pistons with varying pin heights too.