12 replies to this topic

[stringbean40]

i am new to building pulling engine (but have been building kohler engines for 20+ years. i am building a 12hp stock altered engine with a je piston and lakota billit rod and the diller keeps breaking right by the hex part. Any thoughts as to why? which rod is better? thanks 

[boyscout862]

Welcome to GTT. Is the clearance to the bottom of the pan so small that the distortion of high revs lets the dipper hit the bottom? That or the dipper can't handle the centrifigul forces on its cross section. Good Luck, Rick

[stringbean40]

there is no sign of it hitting the pan but i will check that. Is there a spec? You mean the dipper is not heavy enough? i am leaning towards a mwsc rod any thoughts?

[Chris11]

what engine are you putting a rod in? You may find that a billet rod will not fit a stock piston.

[stringbean40]

12hp kohler, bored 30 JE piston all the machining done to block to fit billit rod. Super cub crank. It has the low profile pan. does anyone know the correct onces of oil for it?

[560Dennis]

I shorten mine . what weight oil ?
Sorry without pictures can't help just guessing

[Cvans]

12hp stock altered engine

 

How in the world can you have an "altered" engine that is "stock"?     

I must be old school or something. 

[Dieselcubmike]

How in the world can you have an "altered" engine that is "stock"?     

I must be old school or something. 

Chris, the stock altered class is very popular especially in pulling. In that class you have to run the stock kohler block but can run after market rods, cams, cranks, etc. Usually the its the kohler k341 16hp block but some clubs may require a small cube motor to run

[Cvans]

I think I know what your getting at.

I suppose that it's getting hard to find an old block that doesn't need some machining. 

Edited by Cvans, September 01, 2015 - 06:35 PM.

[KennyP]

i am new to building pulling engine (but have been building kohler engines for 20+ years. i am building a 12hp stock altered engine with a je piston and lakota billit rod and the diller keeps breaking right by the hex part. Any thoughts as to why? which rod is better? thanks 

Are you sure you have the correct oil pan on there for that dipper?

[Dieselcubmike]

I think I know what your getting at.

I suppose that it's getting hard to find an old block that doesn't need some machining. 

The machining isnt bad. Just as long as the jug is in good shape and theres no broken off pieces or any damage to the block. I can usually get a 16 block for about 40-60$ around here. You would just bore the the block out to specifications, add your cam, valves, crank, billet head, etc etc and your good to go. Cant forget about an electric cooling fan! 

[CamoWoodDuck]

The machining isnt bad. Just as long as the jug is in good shape and theres no broken off pieces or any damage to the block. I can usually get a 16 block for about 40-60$ around here. You would just bore the the block out to specifications, add your cam, valves, crank, billet head, etc etc and your good to go. Cant forget about an electric cooling fan! 

So does it have to be a 16 or can you take a 14hp Kohler and do what you do? Cuz I have a 14hp Kohler and want to get more out of it

Edited by CamoWoodDuck, September 12, 2015 - 04:23 PM.

[Dieselcubmike]

You can run either. 16hp is the standard build for a NQS stock Altered.

 

These are the NQS rules for the 16hp

https://nqspulling.o...ered-Rules.html

 

This is for the 14hp.

https://nqspulling.o...ngle-Rules.html