Head Bolts

[RusticoRay]

My Ne-5 head bolts keep loosening up. I torque to the proper specs and three times I have takin the motor off to do it. Its the only way I feel that I can get them all at the proper torque. Upon suggestion Im going to use loctite wondering what type. Does this look like the right stuff? Thanks in Advance Ray http://www.adhesivesandsealants.com/article.mvc/New-Loctite-High-Temperature-Threadlockers-0001?VNETCOOKIE=NO

 

[bill green]

Hi what year is you NE5...Bill

 

[Quenton Guenther]

Hi Ray,

Several have tried the Loctite and report good success.

Have fun,

 

[RusticoRay]

Leeonardo is a 2008. I pulled the motor out in preparation of Loctite application, anything here I should be worried about. The exhaust pipe is pitted feels like the crust on the intake valve and seat.

 

[Quenton Guenther]

Hi Ray,

What grade of gas are you using?
You might want to check the head for level. You can resurface the head on a flat surface with #220 sandpaper.

Keep me posted, and let me know how the Loctite works out.

The late 2007 and 2008 cylinders were problematic due to metal curing issues, but normally the metal works OK after they are reheated.

Have fun,

 

[RusticoRay]

Im using the good low grade 86 or 87 depending on the service station. The whizzer was running well just at startup when cold it would leak a little fuel out of the head on the intake side. Id let it warm up and rode on. Lately it started leaking air on the exhaust side. Thats where the exhaust pipe was getting pitted I think. Picture was April 28th.

 

[Hal the Elder]

HEY RAY:

It sure sounds like your head is not a perfect plane surface, with both intake and exhaust leaks!

Send it to Quenton for head resurfacing/milling and combustion chamber scooping, and get a copper head gasket in the package deal!

That's what I did and I'm sure happy with the results!

HAL, 2005 NE5, "OSCAR"

 

[RusticoRay]

Hello Hal, Quenton saved this whizzer "Lee"anardo from a four pound hammer or worst. Bike was dead at 350miles. The head bolts keep backing off and then produce leaks. Im going to use 220grit and a piece of granite stone that looks like a piece of glass and flattin it out and reuse the copper gasket and Loctite.Hopefully I'll be putting more mileage on the bike.

 

[Quenton Guenther]

Hi Ray,

Because of Whizzers use of 2 different size headbolts, it is very easy to "warp" the head, and the brittle threads on the late 2007 and 2008 motors adds more to the problem. Although re-curing the cylinder metal has helped, it may necessary to do it again[325 degrees for 2 hours in oven and let cool normally]. I would make sure the head is level, and try the Loctite. Of course you can send the head to me if it needs to be re-leveled [no charge, you just need to pay shipping cost both ways].

Let me know how I can help.

Have fun,

 

[RusticoRay]

Hi Quenton, Does this mean I'd have to breakdown to the cylinder to recure it or is their another way? I think I can relevel the head with the sandpaper and a chunk of granite.