Author Topic: ch18  (Read 4493 times)

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Offline chevydmax6

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ch18
« on: February 05, 2015, 06:49:34 AM »
Hello I got a ch18 and did compression test on it and got 85-90 psi
So time to tear it donw and fix
When replacing rings is there anything I need to do and look for

What is a good place for parts



Offline fx28

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Re: ch18
« Reply #1 on: February 09, 2015, 01:31:21 PM »
You should do a leakdown test first to determine where you are loosing compression. Your rings might still be good !  Have seen several of these with carboned up valves and or blown head gasket.   Kohler is your best bet on parts if it is all stock

Offline chevydmax6

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Re: ch18
« Reply #2 on: February 09, 2015, 03:02:37 PM »
I had air put to the cylinder when I changed the valve springs so I could remove the governor and it was leaking out the bottom of the piston in to the crankcase

I might have the motor bored out 25mm with new pistons and rings


Offline GRUBDIGGER

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Re: ch18
« Reply #3 on: February 10, 2015, 06:14:58 AM »
IT'S NORMAL TO GET SOME AIR IN THE CRANKCASE.EVEN ON A REBUILD YOU WILL HAVE SOME LEAKAGE.
JOHN HERRING
ARMA TECH
TRI-STATE RACING MOWER ASSC.
http://wwwtsrm.smfforfree.com/

Offline chevydmax6

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Re: ch18
« Reply #4 on: February 10, 2015, 07:40:55 AM »
Ok since I got the motor broke down what is some mods to do easy and cheap

Offline IADIRT51

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Re: ch18
« Reply #5 on: June 24, 2015, 03:12:45 PM »
Not really much for cheap if you want billet aftermarket, if you can access machine shop, any less rotating mass = better performance, whether it be drive line or engine. Honestly any stock engine with a better flowing intake and a decent carb or set of carbs and a less restrictive exhaust, along with lighter flywheel (not saying mill/turn a bunch of material off yours, rather, buy a Zach Kerber or ARC) and a high output ignition, more ignition timing and slower burning fuel, as well as a head cleaning, and head milling for more compression (without P/V interference) can usually wake up an engine rather well, and stock internals will usually hold up to 4500-5000 RPM. The stock cam is designed for peak torque and HP at 3500-4000 on most modern engines, so a slightly more aggressive camshaft may be an upgrade. Look at it like a car engine of any type, there are certain limitations you need stay within and as long as you do that you should be able to make a it little more powerful all around but most of all more responsive which is the key to performance engine. I personally focus on chassis a lot more than engine. Lower HP, Better tires, more responsive and happier chassis will usually outdo, big HP with decent tires and a chassis that looks good on paper.

Offline chevydmax6

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Re: ch18
« Reply #6 on: July 08, 2015, 12:52:13 PM »
I have got the motor back together and running
I forgot the mention that the motor is going inti a golf cart

I have got a ch25 with acell pump on it now and that woke it up a bit  motor has been running good and the golf cart does around 35/40 mph and has tons of touqre


 

anything