Lifan 200 GY-5 exhaust problem. - Page 2

Zombieking · 08-02-2012, 12:57 AM

Alright, do you think WD-40 would do the job? Also how hot should I get it, Red hot?

SpudRider · 08-02-2012, 03:02 AM

I recommend PB Blaster; it's an excellent penetrating oil.

As long as you don't melt the aluminum, you will be fine.

I replaced the studs with bolts on my Zongshen exhaust header.

Spud

Wild_Alaskan · 08-02-2012, 03:35 AM

WD-40 is better than nothing, but as spud suggests pb blaster is much better.

The aluminum wont turn red when it is hot, just heat it about 1-2 mins while avoiding heating the bolt. you will need to get the vice grips on and turning quickly because the aluminum will cool rapidly.

Basically what you are trying to do is expand the aluminum more than the steel so the stud has a looser fit and allows you to break the bolt free.

Weldangrind · 08-02-2012, 02:40 PM

PBlaster is an excellent product, but it's designed to be used cold. If you need to heat the stud to remove it, get it as hot as you can (holding the flame on the stud), remove the heat and give it a quick shot of WD-40 around the perimeter of the stud.

The idea is to expand the stud with heat and then quickly quench it with WD-40. The stud immediately contracts and then the WD-40 wicks into the thread, usually allowing it to unscrew easily with whatever Vise Grips you have. Expect smoke when you spray WD-40 on the hot surface, and wear gloves and eye protection.

I've used this method for nasty rusted shock bolts on cars with good success.

SpudRider · 08-02-2012, 02:57 PM

Quote:

Originally Posted by Weldangrind

PBlaster is an excellent product, but it's designed to be used cold. If you need to heat the stud to remove it, get it as hot as you can (holding the flame on the stud), remove the heat and give it a quick shot of WD-40 around the perimeter of the stud.

The idea is to expand the stud with heat and then quickly quench it with WD-40. The stud immediately contracts and then the WD-40 wicks into the thread, usually allowing it to unscrew easily with whatever Vise Grips you have. Expect smoke when you spray WD-40 on the hot surface, and wear gloves and eye protection.

I've used this method for nasty rusted shock bolts on cars with good success.

Wow! As always, thanks for posting the excellent advice, Weld.

In the future, I will reserve the PB Blaster for overnight soaking before I resort to the heat treatment you specified.

Spud

katoranger · 08-02-2012, 02:59 PM

That is an excellent tip.

Zombieking · 08-03-2012, 01:29 PM

Alright I'm going to try it today, thanks for all the tips!

Zombieking · 08-03-2012, 03:41 PM

WOOOOOooo, Turned out i didn't even need heat just a little wd-40 and a new pair of vice grips. Bought a 6mm stud and bolt. Now it's good as new. Thank you all for your help!

MICRider · 08-03-2012, 03:48 PM

Quote:

Originally Posted by Zombieking

WOOOOOooo, Turned out i didn't even need heat just a little wd-40 and a new pair of vice grips. Bought a 6mm stud and bolt. Now it's good as new. Thank you all for your help!

Excellent! Glad to hear you got it sorted out, vice grips are handy beasty's!

FastDoc · 08-03-2012, 04:14 PM

Git 'er done! 8)

Vise-Grips are one of the tools where the cheap knock-offs are not nearly as good as the real thing. I have MANY cheap Chinese tools but my Vise-Grips are the real thing. :wink:

katoranger · 08-03-2012, 06:41 PM

Quote:

Originally Posted by FastDoc

Git 'er done! 8)

Vise-Grips are one of the tools where the cheap knock-offs are not nearly as good as the real thing. I have MANY cheap Chinese tools but my Vise-Grips are the real thing. :wink:

x2. Channel Locks too.

FastDoc · 08-03-2012, 06:50 PM

Yes! That's another good example.

At the risk of diverting the thread more (but that's what we do :wink: ) I add to the list the Leatherman tool. Knockoffs are simply not as good. 8)

driller · 08-04-2012, 12:40 AM

And the end all of tools the mighty Professional grade cordless drill. Yes it is worth $200 don't mess around with cheap drills trust me the good ones pay for themselves.

katoranger · 08-04-2012, 01:54 AM

I have been very happy with my craftsman drills.

SpudRider · 08-04-2012, 02:12 AM

Quote:

Originally Posted by Zombieking

WOOOOOooo, Turned out i didn't even need heat just a little wd-40 and a new pair of vice grips. Bought a 6mm stud and bolt. Now it's good as new. Thank you all for your help!

Good for you, ZK!

Spud

08-02-2012, 03:02 AM	#17
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	I recommend PB Blaster; it's an excellent penetrating oil. As long as you don't melt the aluminum, you will be fine. I replaced the studs with bolts on my Zongshen exhaust header. Spud __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
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08-02-2012, 03:35 AM	#18
Wild_Alaskan Join Date: Dec 2009 Location: Alaska Posts: 914	WD-40 is better than nothing, but as spud suggests pb blaster is much better. The aluminum wont turn red when it is hot, just heat it about 1-2 mins while avoiding heating the bolt. you will need to get the vice grips on and turning quickly because the aluminum will cool rapidly. Basically what you are trying to do is expand the aluminum more than the steel so the stud has a looser fit and allows you to break the bolt free. __________________ Dune buggy build http://chinariders.net/modules.php?n...wtopic&t=14470 400cc lifan build vid: http://youtu.be/20HoU8OK_Y0 other fun: http://tinyurl.com/wildalaskan
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08-02-2012, 02:40 PM	#19
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	PBlaster is an excellent product, but it's designed to be used cold. If you need to heat the stud to remove it, get it as hot as you can (holding the flame on the stud), remove the heat and give it a quick shot of WD-40 around the perimeter of the stud. The idea is to expand the stud with heat and then quickly quench it with WD-40. The stud immediately contracts and then the WD-40 wicks into the thread, usually allowing it to unscrew easily with whatever Vise Grips you have. Expect smoke when you spray WD-40 on the hot surface, and wear gloves and eye protection. I've used this method for nasty rusted shock bolts on cars with good success. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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08-02-2012, 02:59 PM	#21
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	That is an excellent tip. __________________ You meet the nicest people on a Honda Clone.
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08-03-2012, 04:14 PM	#25
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Git 'er done! 8) Vise-Grips are one of the tools where the cheap knock-offs are not nearly as good as the real thing. I have MANY cheap Chinese tools but my Vise-Grips are the real thing. :wink: __________________ Happy to serve.
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08-02-2012, 12:57 AM	#16
Zombieking Join Date: May 2012 Location: Wisconsin Posts: 30	Alright, do you think WD-40 would do the job? Also how hot should I get it, Red hot?
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08-03-2012, 01:29 PM	#22
Zombieking Join Date: May 2012 Location: Wisconsin Posts: 30	Alright I'm going to try it today, thanks for all the tips!
	0

08-03-2012, 03:41 PM	#23
Zombieking Join Date: May 2012 Location: Wisconsin Posts: 30	WOOOOOooo, Turned out i didn't even need heat just a little wd-40 and a new pair of vice grips. Bought a 6mm stud and bolt. Now it's good as new. Thank you all for your help!
	0

08-03-2012, 06:50 PM	#27
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Yes! That's another good example. At the risk of diverting the thread more (but that's what we do :wink: ) I add to the list the Leatherman tool. Knockoffs are simply not as good. 8) __________________ Happy to serve.
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08-04-2012, 12:40 AM	#28
driller Join Date: Jul 2007 Location: Lawrence, Ks. Posts: 195	And the end all of tools the mighty Professional grade cordless drill. Yes it is worth $200 don't mess around with cheap drills trust me the good ones pay for themselves.
	0

08-04-2012, 01:54 AM	#29
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I have been very happy with my craftsman drills. __________________ You meet the nicest people on a Honda Clone.
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