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06-07-2017, 03:27 AM | #1 |
Join Date: Feb 2016
Posts: 98
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Blown Hawk Engine
So I think my buddy blew the engine while riding at full throttle on the freeway.
Is there a kit to rebuild the top end, or what parts to buy individually? The cheaper the better for him. |
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06-07-2017, 03:42 AM | #2 |
Join Date: Jan 2012
Location: ChCh , NZ
Posts: 2,265
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Blowen ?....
is the con rod hanging out a hole in the crank case ? pull it down and have a lokk before he's spends any money... ..
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06-07-2017, 08:48 AM | #3 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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We need to know more. What is your definition of "motor blown up"? In other words ---- Pete is one hundred percent right!...ARH
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06-07-2017, 01:55 PM | #4 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Let's also clear up some confusion right away.
Top End rebuild kit. On most engines, the "Top End" means - valvetrain and cylinder head. Do you mean that, or do you mean Jug (cylinder) and Piston?
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06-07-2017, 08:32 PM | #5 |
Join Date: Feb 2016
Posts: 98
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Good questions guys. He hasn't pulled the engine apart yet and gave me very little information other than it stoped running and wouldn't start again and was making weird noises. I'll report back once he's pulled the engine apart.
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06-07-2017, 08:58 PM | #6 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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Good idea. If he ran it wide open with the original jets in the carburetor very far on the freeway, it could have broken a piston or dropped a valve, since you say it was making weird noises...ARH
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06-07-2017, 11:14 PM | #7 |
Join Date: Sep 2015
Location: East Central Hellinois
Posts: 1,344
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Please keep us up to date and if you can please ask your friend for some pics of any internal parts that failed and or are damaged.....
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06-08-2017, 12:46 AM | #8 |
Join Date: Apr 2017
Location: Southern IL
Posts: 132
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I was thinking burnt valve from not adjusting them or a melted piston from a lean condition at full throttle.
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06-08-2017, 10:35 AM | #10 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Two important questions: Was it broke in yet? How many miles?
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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06-09-2017, 12:18 AM | #11 |
Join Date: Feb 2016
Posts: 98
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Yes, we broke them in correctly after first changing the oil. Them another oil change...
Bike has around 1000 miles. |
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06-14-2017, 05:54 AM | #14 |
Join Date: Feb 2016
Posts: 98
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Ok, and that is based on the assumption that this bike was ran at sea level or the 5000' feet that it was actually running at?
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06-14-2017, 07:27 AM | #15 |
Join Date: Jun 2016
Location: akwesasne, NY-13655
Posts: 2,220
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No, that lean problem is less pronounced at 5000 feet. I must have missed on of your posts, as this is the first I've heard of 5000 feet...ARH
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