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  #11  
Old 04-19-2018, 08:41 AM
J-Mech J-Mech is offline
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Location: Oblong, Illinois
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I think your making a big deal about nothing.

Hey, all you guys who want to talk about how hot your mufilers get: don't be stupid! Mufflers get HOT! Exhaust gas leaving the head can reach well over 1000°!!!! Doesn't matter what oil you run. Don't go touching mufflers! Don't waste time measuring muffler temps. That's not where we measure engine temp. Exhaust temp varies by load, and isn't affected too much by engine core temp. (Oh, it is a little.) But exhaust temp can swing from 350° under no load, to upwards of 1200° under load. Stop touching mufflers. Stop talking about muffler temps. If you're muffler is getting hot enough to glow, either your fuel system is way lean, or the muffler is worn out.

The only way to truly know how hot your engine is running on an air cooled motor, is to monitor oil temperature. Which, you can't do visible, or with an infrared gun. Just, run your engine with whatever oil and don't worry about it. If it's running too hot, it's likely running too lean.
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  #12  
Old 04-19-2018, 09:02 AM
CAO65 CAO65 is offline
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J-Mech,

I misspoke about tapping the muffler; it was actually the upper shield that lies above the muffler--part number 703-07971. In retrospect, if it was the muffler I'd be super F__ked. I do agree I'm likely overreacting to the matter, but past experiences tends to dictate future actions.
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  #13  
Old 04-19-2018, 09:10 AM
J-Mech J-Mech is offline
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Quote:
Originally Posted by CAO65 View Post
J-Mech,

I misspoke about tapping the muffler; it was actually the upper shield that lies above the muffler--part number 703-07971. In retrospect, if it was the muffler I'd be super F__ked. I do agree I'm likely overreacting to the matter, but past experiences tends to dictate future actions.
With the picture you posted, I was already certain that you didn't touch the actual muffler, but the shroud. I was just going to let you keep thinking that. I've touched mufflers before on accident after an engine ran only a few minutes and it melted the skin off.

Past experiences dictate future actions more when you are ignorant of what caused the issue. I'll educate you. Your 1864 overheated likely because it was running lean, and may have needed the engine pulled and cleaned because of debris on the cooling fins. Keep your engine clean, tuned and running the best it can. It will run cool then. Synthetic oil is a marketing scam IMHO. Tore down a lot of high hour motors with dyno oil in them, and they looked just fine inside. (Tore down for things like fixing leaks.) At this time, I have yet to see a motor on synthetic last longer than a motor on any other oil. Oil changes at recommended intervals, makes more difference than anything.
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  #14  
Old 04-19-2018, 10:58 AM
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OldSkull OldSkull is offline
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Jon nail it! Lean condition! Blame it on the EPA none adjustable carburetor and the Ethanol fuel..I can't count how many times we need to go one jet size bigger on air cooled motorcycle carburetor to get rid of the overheating problem. The principles of Bernoulli have been establish long before the EPA was born...
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

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