Shifter cover leak

[Rat Rice]

I have an issue with my shifter cover leaking at the bottom of the cover. I've changed the gasket twice now. Yes the sealing surfaces are clean and dry. They're as flat as I can tell. I'm thinking about using case sealer to glue two gaskets together and seeing if that will fill the gap. Thoughts, suggestions, ideas??? She's not a old Harley and shouldn't be marking her spot every time I park her .

 

[dirtdigger]

Cant be flat if its clean and dry or you are overtorquing the cover. Im guessing its not flat and has raised areas around the bolt holes on the gasket surface. Some cheap gaskets are also too thin, the oem honda gaskets have a little thickness to them, never had an oem one leak.

 

[Rat Rice]

I used a straight edge and a feeler gauge to check flat of the cover, it's flat within.001. Yes there a very small bit of distortion around the bolt holes on the lower case. But the leak seems to be along the bottom of the cover at the center 3 bolts. The gasket I used I bought it on CB750, it does seem a bit thin compared to the "old" Honda gaskets. I don't and won't use RTV or any other "rubber" sealents as I've seen a couple of single cams torn up by a random piece getting in an oil galley. My thought is to use 2 of the gaskets that I just ordered from here and glueing them together and using that to fill what ever void there is. That should provide enough thickness compared to a stock gasket. Thoughts?

 

[hinksy]

I thought mine was also , then I realised the o-ring on the neutral switch had failed . So everytime I parked it , it left a small oil stain on the floor and the frame rail and case had some oil on it

 

[Rat Rice]

I'm happy to report that I have solved the issue. I did use case sealer to glue two gaskets together and it has sealed the drip. I still have the factory gasket, I miked it up to compare it to the replacement gasket. The stock Honda gasket is 0.5 mm thicker than the aftermarket gasket. It's also a fiber gasket whereas the aftermarket gasket is press cut from gasket paper. The two glued together gaskets miked up at 0.11 mm stock Honda at 0.10 mm and the aftermarket gasket at 0.05 mm.

 

[stosh]

I have an issue with my shifter cover leaking at the bottom of the cover. I've changed the gasket twice now. Yes the sealing surfaces are clean and dry. They're as flat as I can tell. I'm thinking about using case sealer to glue two gaskets together and seeing if that will fill the gap. Thoughts, suggestions, ideas??? She's not a old Harley and shouldn't be marking her spot every time I park her .

You will not like this but toyota makes a gasket sealer that works great, it costs adout 25.00 it it black in color and comes in a white tube with a took to roll it from bottom to top. It can be bought on amazon.
Its called
toyota seal packing 103 (FIPG)
P/n:00295-00103

 

[stosh]

I restore old bikes and some times gaskets tear and i can not find one.
I use this on the torn gasket on both sides and i have no leaks.
Try it.

 

[Rat Rice]

Stosh, I actually do like it. Although I'm adverse to using sealers because I've seen a couple of CB engines destroyed because of a piece of RTV getting loose and plugging an oil orifice, I will be taking a look at your suggestion. For sealing engine cases I use Yamabond made by, you guessed it, Yamaha. Works great. Thank you for the response and the recommendation.