Register Members List Member Map Media Calendar Garage Forum Home Mark Forums Read

Go Back > Technical > How To's and Q & A's
Forgot info?

Welcome to! You are currently viewing our forums as a guest which gives you limited access to the community. By joining our free community you will have access to great discounts from our sponsors, the ability to post topics, communicate privately with other members, respond to polls, upload content, free email, classifieds, and access many other special features. Registration is fast, simple and absolutely free, join our community!

Register Today!

If you have any problems with the registration process or your account login, please contact us.

Like us on Facebook! Regular shirt GIVEAWAYS and more


Share This Thread: 
Subscribe to this Thread Thread Tools
Old 07-19-2015, 10:21 AM   #1
gots2no's Avatar
Join Date: Feb 2012
Location: Pearland
Feedback Rating: (0)
Posts: 956

Experience: 10+ years
Trackdays: 10+

'94 Kawasaki ZX6
'78 Yamaha XS750E (sold)
'82 Yamaha Seca 750 (sold)
'82 Yamaha XT200 (sold)

Member Garage

Case sealing question

Getting ready to apply case sealant and have a question. I assume it should be applied on all mating surfaces to preserve even clearances on the case even if those areas do not need sealing?
Attached Thumbnails
Click image for larger version

Name:	Lower case.JPG
Views:	50
Size:	138.8 KB
ID:	87061  
gots2no is online now   Reply With Quote
Similar Topics
Thread Thread Starter Forum Replies Last Post
Case dismissed against Texas woman in salt poisoning case NewsBot Houston - Local News 0 04-09-2015 09:20 AM
Texas lawmakers prepare for worst case scenario amid Ebola case NewsBot Health 0 10-09-2014 02:10 PM
Help sealing my bead BuffaloRider13 How To's and Q & A's 3 04-12-2011 08:22 AM
Sealing a bead on a tubless tire with hair spray urbanXJ Off Topic 9 07-01-2010 12:13 PM
Just in case CarbonJames Taking it to the Track 5 06-13-2007 03:08 PM
Old 07-19-2015, 11:33 AM   #2
Resident 250 guru
cuong-nutz's Avatar
Join Date: Mar 2009
Feedback Rating: (9)
Posts: 4,662

Experience: 1-3 months

Ninjer 250

Most manuals will state not to apply sealant there near the main bearings and oil passages to prevent any sealant from coming loose and clogging up the oil galleys and pump filter causing oil starvation. Sealant is used to prevent stuff from leaking out and in. Those surfaces are inside the case so it doesn't even matter. You can put a very thin film there but that's totally up to your discretion. Motors have not exploded from gasket sealant not being present there out of the factory and this practice has been going for years.
250cc's of pure Nutz
Ninjette Stunt Life Stunt Ride
cuong-nutz is offline   Reply With Quote
Old 07-19-2015, 01:58 PM   #3
Senior Member
Join Date: Mar 2011
Feedback Rating: (0)
Posts: 911

Experience: 3 years

dont think you need sealant if there is a factory gasket but if you do use something like yamahalube or GS11, silicon swells much bigger and blocks oil pasages the other stuff doesn't and it also doesn't completely cure making it a good sealant.

My personal opinion is the only thing that needs sealant if a gasket is not present would be the outside of case, most definately do not put that on the caps like you have shown above. Proper measurement and clearances that are withinfactory tolerences should solve the comment above.
tbssowner is offline   Reply With Quote
Old 07-19-2015, 10:56 PM   #4
El Pachuco
Senior Member
El Pachuco's Avatar
Join Date: May 2012
Location: 30 miles south of downtown
Feedback Rating: (0)
Posts: 925

Experience: 10+ years
Trackdays: 10+

2003 Kawasaki ZRX 1200R
1975 Honda CB750K
1991 Suzuki DR

Originally Posted by gots2no View Post
Getting ready to apply case sealant and have a question. I assume it should be applied on all mating surfaces to preserve even clearances on the case even if those areas do not need sealing?
I would and have applied sealant there. As far as I'm concerned, it needs it there to seal oil from the bolts. I always apply it very thin. Just short of wiping it completely off, and that is for the entire mating surface.

Stay as far off of the bearings as possible while making sure there is enough to create a proper seal.
El Pachuco is offline   Reply With Quote

Thread Tools


All times are GMT -5. The time now is 09:14 PM. is not responsible for the content posted by users.
Privacy Policy