LC cylinder nuts keep getting loose

Astrolopitec · 27-08-2008, 00:32

Hi

I've tried high torque and LockTite. But the cylinder nuts on my water cooled motor keep getting loose every 500Km. So I have to remove the watter jacket every time I have to retorque them darn nuts!
Any tricks to keep these water submerged nuts from getting loose ?

Thanks
Juan

tiba_karotsu · 27-08-2008, 04:35

maybe you're not torquing them down enough? could be your cylinder studs are stretching or worse the threads in the crankcase are starting to strip which is a bad thing.

DRXRACING · 28-08-2008, 01:13

Try 14.5 foot lbs. torque.

Browni · 30-08-2008, 15:04

As others said use the right torque and tighten the nuts crosswise. Heat-up the engine then check the nuts with torque wrench again!

14.5 lbs=19.65 Nm it's too much!!!

For cast iron LC cylinder 14 Nm
For aluminium LC cylinder 10-12 Nm

waxhead · 04-09-2008, 11:32

you may also have detonation that is stressing the head

27-08-2008, 00:32	#1 (permalink)
Astrolopitec Registered User	LC cylinder nuts keep getting loose Hi I've tried high torque and LockTite. But the cylinder nuts on my water cooled motor keep getting loose every 500Km. So I have to remove the watter jacket every time I have to retorque them darn nuts! Any tricks to keep these water submerged nuts from getting loose ? Thanks Juan __________________ Juan 96cc LC "UFO" Zuma Quebec, Canada. http://forum.scooterforum.net/forum/...d.php?t=110721

27-08-2008, 04:35	#2 (permalink)
tiba_karotsu OVERREV TUNING	maybe you're not torquing them down enough? could be your cylinder studs are stretching or worse the threads in the crankcase are starting to strip which is a bad thing. __________________ 2stroke tuning the Dutch way + infusion with Filipino ingenuity = OveRReV TuNinG Rev Higher, Go Faster, Race Harder, My Desire

30-08-2008, 15:04	#4 (permalink)
Browni B.A.T tuning	As others said use the right torque and tighten the nuts crosswise. Heat-up the engine then check the nuts with torque wrench again! 14.5 lbs=19.65 Nm it's too much!!! For cast iron LC cylinder 14 Nm For aluminium LC cylinder 10-12 Nm Last edited by Browni; 30-08-2008 at 15:12.

28-08-2008, 01:13	#3 (permalink)
DRXRACING wrhracing	Try 14.5 foot lbs. torque.

04-09-2008, 11:32	#5 (permalink)
waxhead Registered User	you may also have detonation that is stressing the head