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Leak help / torque specs

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Old Feb 10, 2020 | 12:28 PM
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Default Leak help / torque specs

Hi guys

Have a leak from the seam on the lower engine cases. 2008 SG

The two allen bolts were definitely loose so I'm hoping by tightening these two bolts it will stop the leak. Anyone know the torque specs ? Couldn't find it in the manual. If not do you guys think ultra black will work along that seam ?

I def don't want to tear this engine apart.




Thanks
 

Last edited by bfleischer; Feb 10, 2020 at 01:20 PM.
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Old Feb 10, 2020 | 02:12 PM
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Front of my manual has general torques specs based on bolt diameter, perhaps your is the same

For gas & oil resistant sealers my go to is "Seal-All"

Good luck
 
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Old Feb 10, 2020 | 02:32 PM
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Based on your second picture with that lower front case bolt head and washer holding all that oil I would say that it's coming from somewhere else... Generally the bikes on the kickstand it should all float that way towards the kickstand so being on the right hand side of the bike is telling me it's probably something above that's leaking. Clean everything real good and then go from there and try to trace back where the leak is. Could be a cylinder base o-ring or It could be up around your lifter blocks.. Clean everything real good and Take a closer look..
 
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Old Feb 10, 2020 | 02:59 PM
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Hey
It is on the left hand side running down right to left towards the kickstand. I cleaned everything real good and I'm 99 percent sure it's coming from that seam. I'm going to drop some dye once it stops raining this week to see if I can get a def location .

My manual has no torque specs based on bolt size and I cant find that bolt in the manual. Good try though .
 
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Old Feb 10, 2020 | 03:19 PM
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Originally Posted by bfleischer
Hey

My manual has no torque specs based on bolt size and I cant find that bolt in the manual. Good try though .
Mine says
1/4” grade 5 is 10
grade 7 is 13
grade 8 is 14

5/16 numbers are 19 / 25/ 29 respectively

33/ 44/47 for 3/8ths

bolt diameter not hex dimensions
grade 5 bolts have 3 marks on heads
7 has 5
8 has 6
grade 2 has none
 

Last edited by eighteight; Feb 10, 2020 at 03:36 PM.
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Old Feb 10, 2020 | 03:23 PM
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Originally Posted by eighteight
Mine says
1/4” grade 5 is 10
grade 7 is 13
grade 8 is 14

5/16 numbers are 19 / 25/ 29 respectively

Cool thanks! Ft lbs right
 
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Old Feb 10, 2020 | 03:30 PM
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Any recs on other sealers etc if it is from that seam.

Thanks again guys
 
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Old Feb 10, 2020 | 03:37 PM
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Originally Posted by bfleischer
Cool thanks! Ft lbs right
yes sir
 
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Old Feb 10, 2020 | 03:59 PM
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Originally Posted by bfleischer
Any recs on other sealers etc if it is from that seam.

Thanks again guys
40 years ago with beater cars and no money I used Seal All to repair fuel tanks and rubber case batteries
it held electrolytic acid, so it’s worth a try
jmo
 
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Old Feb 10, 2020 | 08:48 PM
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The bolts look like STD 18-8 polished SS

Those bolts are 5/16 - 18. Go to about 16 fp..

If chromed higher grade I'd go up to 19 .

HD spec is 15 to 19.
 

Last edited by Max Headflow; Feb 10, 2020 at 08:54 PM.
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