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| Getting a little more out of her | |
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| Topic Started: Feb 12 2009, 06:30 PM (209 Views) | |
| IAfarmer | Feb 12 2009, 06:30 PM Post #1 |
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What can you do to squeeze a bit more of out of a Series II KT17? I just read the remark about a blue coil. Since this is a twin and fires the plugs every stroke, I would suspect a special coil is needed. How about different plugs, coil, wires? Anything else? Don't really need the power, just would be fun to have it. Thanks. |
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| Jim H. | Feb 12 2009, 06:53 PM Post #2 |
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Someone will be along that knows for sure but I suggest a hotter coil could be bought at a Motorcycle shop to serve your needs :Huh |
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| Pops | Feb 13 2009, 08:27 AM Post #3 |
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Mill the heads .20 thousandths better compression but not to deep to cause it to overheat! Nothing else to make it run better and smoother; run some 92 octane with STP fuel booster that will clean it up and you will notice better power. Pops |
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| agitch | Mar 8 2009, 01:45 AM Post #4 |
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kirkengines has a nice aftermarket dual coil and pointsaver that should help it run better. i'm fixing to order it and will let you know he she works. |
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| young enthusiest | Mar 8 2009, 01:00 PM Post #5 |
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Order the pointsaver! I have heard so much good stuff about it! It even has a on year exchange/refund warranty! They are only about like 50 bucks I think. should help with colder starting too! |
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| Merk | Mar 8 2009, 02:22 PM Post #6 |
Merk
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Every motor needs air-fuel and a spark to run. First place to look is the air filter. When is the last time you cleaned or replaced the air filter? Are you using foam pre cleaner? How do you clean your air filter(s)? Briggs and Stratton does not want you to use compress air to clean the air filter. Briggs want you tap the filter on a hard surface. I'm not sure how Kolher brand air filters are. I wash the foam filter out with soap and water. Them they are towel dried with paper towels. Next step is to add a few drops of new motor oil. I went to a 30 day fuel rule. Any fuel (2 and 4 cycle fuel) in my storage containers is added to one of autos. I buy my fuel at a name brand gas station that does plenty of business. I don't buy fuel when the station is getting their underground tanks filled. You have a higher risk of getting the sediment in your fuel containers from the bulk tank(s). I will add a fuel stablizer to my fuel year round. There are 2 good ones...Sta-Bil and Briggs and Stratton's brand. Sta-Bil does have a octane booster in it. What octane fuel to use??? I've tried 87, 89 and 92 octane in my Cubs. I was down on power when I used 92 octane gas. I could not tell the difference between 87 and 89 octane gas. I run 87 octane mainly because of the cost. I aslo use Sta-Bil with octane booster in it. Two Cubs have heads that have .040 off them. One of the motors was based on David Kirk's Killer Kohler motor. Clean fuel filter is a must. A good spark is a key to making horse power. Most if not all Kohlers have a battery ingition system. A good battery and wire harness is a must One of the most negelected areas is the ground. Buying the cheapest battery can cause more dollars than buying a good battery in the long run. Next area is the coil. Poor connections going to the coil can cause a poor spark. I have 2 Cubs running a Bosch coil. Both start easier and faster on the Bosch coil. Kohler coil has 20000 to 25000 volts. Bosch coils have around 40000 volts. Spark plug wires can and will cause problems. Heat, age and the condiation of the spark plug boot are 3 factors that leads to plug wire failure. Spark plug(s) are one of the major areas to have good preformace. The rest of the ignition system can be top knotch.....a poor firing spark plug can kill your performace. Some spark plugs brands do foul out easier than others. You have to deside what is best for you. All but one of my Cubs run Autolite spark plugs.....the other Cub runs a Bosch spark plug. Autolite plugs are cheaper. Some of the major drawbacks to increasing horsepower is higher fuel usage, more work to keep running right and possible driveline problems. |
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