Ktm frame question

Edited Date/Time 6/29/2022 9:44pm
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just bought used that’s missing 2 engine bolts that secure it to the frame. I ordered the replacement parts but noticed the old nuts are still in these metal cages. Am I supposed to peel back the metal flaps to remove them and replace it with the new ones I ordered? Also should I be running loctite on the threads and or grease the new bolts? Thanks.


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mx317
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6/29/2022 4:39pm
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just...
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just bought used that’s missing 2 engine bolts that secure it to the frame. I ordered the replacement parts but noticed the old nuts are still in these metal cages. Am I supposed to peel back the metal flaps to remove them and replace it with the new ones I ordered? Also should I be running loctite on the threads and or grease the new bolts? Thanks.


I would leave those in and use loctite
4
6/29/2022 4:50pm
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just...
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just bought used that’s missing 2 engine bolts that secure it to the frame. I ordered the replacement parts but noticed the old nuts are still in these metal cages. Am I supposed to peel back the metal flaps to remove them and replace it with the new ones I ordered? Also should I be running loctite on the threads and or grease the new bolts? Thanks.


mx317 wrote:
I would leave those in and use loctite
Ended up doing this. Do you know how many pounds of pressure I should use? Doesn’t say in manual.
Rickyisms
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6/29/2022 5:16pm
I go a little more than recommended torque with red loctite. I’ve had them rattle out with standard torque and red loctite.
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ToolMaker
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6/29/2022 5:18pm
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just...
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just bought used that’s missing 2 engine bolts that secure it to the frame. I ordered the replacement parts but noticed the old nuts are still in these metal cages. Am I supposed to peel back the metal flaps to remove them and replace it with the new ones I ordered? Also should I be running loctite on the threads and or grease the new bolts? Thanks.


mx317 wrote:
I would leave those in and use loctite
Ended up doing this. Do you know how many pounds of pressure I should use? Doesn’t say in manual.
As a starting point, bolts have marks on them as well as nuts. That will tell you what grade they are.
Then you can go to a major bolt manufacturer website and they'll have a chart. Usually their charts are for
dry threads. I don't know how locktite affects the torque value, antiseize does affect it quite a bit.
TM
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bvm111
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6/29/2022 6:19pm
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just...
Sorry for asking what is likely an obvious question but I want to be sure I’m doing it right. I have a ktm 250sx I just bought used that’s missing 2 engine bolts that secure it to the frame. I ordered the replacement parts but noticed the old nuts are still in these metal cages. Am I supposed to peel back the metal flaps to remove them and replace it with the new ones I ordered? Also should I be running loctite on the threads and or grease the new bolts? Thanks.


mx317 wrote:
I would leave those in and use loctite
Ended up doing this. Do you know how many pounds of pressure I should use? Doesn’t say in manual.
per the manual - Engine carrying screw M10 - 60Nm - no loctite
6/29/2022 6:32pm
mx317 wrote:
I would leave those in and use loctite
Ended up doing this. Do you know how many pounds of pressure I should use? Doesn’t say in manual.
bvm111 wrote:
per the manual - Engine carrying screw M10 - 60Nm - no loctite [img]https://p.vitalmx.com/photos/forums/2022/06/29/557238/s1200_BAC86C68_A716_4984_8282_409E9904458F.jpg[/img]
per the manual - Engine carrying screw M10 - 60Nm - no loctite
Thank you. Didn’t realize it was called an engine carrying screw. Threw some loctite on anyways since it’ll probably come loose again if I don’t.
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Luxon MX
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6/29/2022 6:48pm
Gotta be a little more specific with the Loctite! For example, "Red" comes in 262, 263, 271, and 272 liquid formulations, other paste formulations, etc. and they all have different properties.

I'd recommend 263 if you can find it. It's applicable to most bolts on the bike that need strong resistance to loosening (like engine bolts) and doesn't require a primer to be used. If you want to use 272 for example, you really should clean everything and use a primer first, otherwise it won't "lock" nearly as well.

Use the recommended dry torque value for Loctite 263 or 262, let it set up over 24 hours, and you'll be good to go.
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bvm111
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6/29/2022 7:04pm
Ended up doing this. Do you know how many pounds of pressure I should use? Doesn’t say in manual.
bvm111 wrote:
per the manual - Engine carrying screw M10 - 60Nm - no loctite [img]https://p.vitalmx.com/photos/forums/2022/06/29/557238/s1200_BAC86C68_A716_4984_8282_409E9904458F.jpg[/img]
per the manual - Engine carrying screw M10 - 60Nm - no loctite
Thank you. Didn’t realize it was called an engine carrying screw. Threw some loctite on anyways since it’ll probably come loose again if I don’t.
Yeah i’m a recent KTM convert a few years ago and they do have some different names for things. After I greased my 450 last year I could find all the torque specs for everything except the swing arm nut. KTM calls it “nut, fork pivot” … i was stumped for a bit on that one!
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soggy
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6/29/2022 9:44pm
Ended up doing this. Do you know how many pounds of pressure I should use? Doesn’t say in manual.
bvm111 wrote:
per the manual - Engine carrying screw M10 - 60Nm - no loctite [img]https://p.vitalmx.com/photos/forums/2022/06/29/557238/s1200_BAC86C68_A716_4984_8282_409E9904458F.jpg[/img]
per the manual - Engine carrying screw M10 - 60Nm - no loctite
Thank you. Didn’t realize it was called an engine carrying screw. Threw some loctite on anyways since it’ll probably come loose again if I don’t.
Only thing I’ll say is loctite will increase your actual torque value. So you are now likely over torqued.
JM485
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6/29/2022 10:36pm
As cheap insurance , just draw a Sharpie line across the nut and bolt. If the bolt were to loosen up at all you'll easily be able to tell because the lines won't be colinear anymore. I do this on all of my two stroke cylinder head and base nuts as well, just an easy way to glance at it and see if it's loosened up at all.
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Luxon MX
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6/30/2022 8:32am
soggy wrote:
Only thing I’ll say is loctite will increase your actual torque value. So you are now likely over torqued.
We've found that it varies based on which Loctite you're using, sometimes significantly. Using a dry bolt as a baseline and torqueing to the recommended value:

Loctite 243 will act as a lubricant and gives you increased tension for the same torque, e.g., "over-torqued" (actually over-tensioned)

Loctite 263 does the opposite and gives you reduced tension for the same torque, e.g. "under-torqued" (actually under-tensioned)
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