| | | Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles | Broken Intake stud Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle General Discussion forum. Intake stud broke off in the engine and not backing out, loctite, WHAT NOW?
Its below the surface and theres ...  | | 
12-04-2008, 06:26 PM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Concord NC
Posts: 221
| | Broken Intake stud Intake stud broke off in the engine and not backing out, loctite, WHAT NOW?
Its below the surface and theres no way to get it by the tap out method. I dont have the tools to get it out either.
What Now? This is my transportation. I promise you this though itll be put back together with Honda nuts and bolts. This really sux....have the whole motor off the bike for one broken stud...  | 
12-04-2008, 06:36 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 747
| | Re: Broken Intake stud Try a dremel with a coutoff wheel, and cut a slit into the engine casing til it cuts a slit into the broken stud. The heat up the engine casing (not the stud) and unscrew it with a flathead screwdriver.
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48cc Grubee Starfire Round Head......
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12-04-2008, 06:41 PM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Concord NC
Posts: 221
| | Re: Broken Intake stud Quote:
Originally Posted by misteright1_99 Try a dremel with a coutoff wheel, and cut a slit into the engine casing til it cuts a slit into the broken stud. The heat up the engine casing (not the stud) and unscrew it with a flathead screwdriver. | Ill have to source a dremel, what if I tried drilling it out. What are these kit studs made outta of anyways. Garbage...really, first the tensioner, now this, Im not that strong, I dont get it.:
I wish I had a drill and a easy out... | 
12-04-2008, 06:46 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 747
| | Re: Broken Intake stud You could try drilling it out, then retapping it to 1/4" .. These are the things you have to do with these engines. My advice would be replace ALL the studs while you have the engine out......
P.S. My tensioner didnt last a day.........My spring tensioner has lasted over 1000 miles.....
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"No such thing as a stupid question, just a stupid answer"
48cc Grubee Starfire Round Head......
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12-04-2008, 06:51 PM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Concord NC
Posts: 221
| | Re: Broken Intake stud Quote:
Originally Posted by misteright1_99 You could try drilling it out, then retapping it to 1/4" .. These are the things you have to do with these engines. My advice would be replace ALL the studs while you have the engine out......
P.S. My tensioner didnt last a day.........My spring tensioner has lasted over 1000 miles..... | Im thinking make a dimple with a punch in the stud, then use a bit that fits that dimple, and drill out the center of the stud. This should allow the rest to turn out easier(maybe). I shoulda replaced all those studs, but kept putting it off. I broke it just doing standard bolt/nut check. | 
12-04-2008, 07:45 PM
|  | MANIC Mechanic | | Join Date: Sep 2008 Location: Clearwater, FL
Posts: 1,122
| | Re: Broken Intake stud ibcnya,
I posted a solution regardng this very dilemna a few days ago...damn if I can can find it now...pictures included...maybe someone will help out with the link.
Jim | 
12-04-2008, 07:49 PM
|  | Motorized Bicycle Elite Member | | Join Date: Mar 2008 Location: Treasure Coast, Florida
Posts: 747
| | Re: Broken Intake stud Here it is, with the pic in post #49 Jim................ bogging down
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"No such thing as a stupid question, just a stupid answer"
48cc Grubee Starfire Round Head......
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12-04-2008, 08:24 PM
|  | Motorized Bicycle Member | | Join Date: Nov 2008 Location: nova scotia
Posts: 41
| | Re: Broken Intake stud Quote:
Originally Posted by ibcnya Im thinking make a dimple with a punch in the stud, then use a bit that fits that dimple, and drill out the center of the stud. This should allow the rest to turn out easier(maybe). I shoulda replaced all those studs, but kept putting it off. I broke it just doing standard bolt/nut check. | you are right to centerpunch it.
then buy yourself a left hand twist drill bit set (trust me you wont regret it)
drill it out , usually the bit will back it out.
if the bit wont catch an edge then you should use a stud extractor ....aka easyout. try to do it right the first time cause once you bugger it up it is hard to put back to rights. | 
12-04-2008, 08:26 PM
|  | Motorized Bicycle Member | | Join Date: Nov 2008 Location: nova scotia
Posts: 41
| | Re: Broken Intake stud Quote:
Originally Posted by misteright1_99 You could try drilling it out, then retapping it to 1/4" .. These are the things you have to do with these engines. My advice would be replace ALL the studs while you have the engine out......
P.S. My tensioner didnt last a day.........My spring tensioner has lasted over 1000 miles..... | if it were me .. imho i would keep it M8 ,it gets anoying needing a fist full of wrenches to work on | 
12-04-2008, 08:52 PM
|  | Motorized Bicycle Elite Member | | Join Date: Oct 2008 Location: Concord NC
Posts: 221
| | Re: Broken Intake stud Quote:
Originally Posted by Creative Engineering ibcnya,
I posted a solution regardng this very dilemna a few days ago...damn if I can can find it now...pictures included...maybe someone will help out with the link.
Jim | Read your post and have been trying that without heat for hours, with Loctite on those threads its not gonna back out. im gonna have to drill it with a small bit, follow up with a bigger, on so on until it decides to break loose. I dont wanna destroy the threads in the engine though.
Anyone ever just use bolts instead of the stud/nut combo? I think as long as I use loctite they shouldnt back out at all. | | Thread Tools | | | | Display Modes | Linear Mode |
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