Exhaust gasket

Hi,

When I removed the mufflers it was two gasket for each outlet. One thin, see attached photo and then a thick.

These:


And these:



Is there any point having two ? I was thinking only have the one of each (last picture) ?

The thick was used so It was thinner then the picture, but I don`t have picture of it....
Is there any reasons to use two gaskets ?

The exhaust gaskets squished flat by the first use, (one time use only). Some exhaust ports had a lot of carbon on the sealing surface and are uneven. To be sealing the blow by hot gases it is a common "mod" to get the gap closed on the exhaust port and exhaust header with a second used or new gasket.
Suzuki for example use better exhaust gaskets with a thicker crush component range.



Michael

Thank you.

So to be 100% sure there is noleak, I can use two new gasket?

I already have 4 kawa oem, need to purchase 4 more then.

Clean the port gasket surface first from carbon and use only one gasket.

Will do and take it from there.

Thank you again

...and don´t over tighten the bolts!!!!!

1 new gasket, and I always use some High Temp RTV sealant. (Red or Black Silicone)

I use two with my V/H exhaust. One is not enough.
Steve

In all the years I have had Kawasaki bikes, I have NEVER had to use more than one exhaust gasket. Even on my Suzuki bikes, I only needed one exhaust gasket to do the job. I only use O.E.M. factory exhaust gaskets in everything I own or owned over the years.

I just make sure the area where the gasket sits is completely free of carbon. I use a little dab of grease to hold them in place, and tighten down the collars down evenly on both sides. Never had a problem with exhaust leaks there on any of my bikes.

On my 750 with OEM exhaust I spent a LOT of time trying to get the exhaust to seal with only one gasket but failed on a couple of ports. I kept telling myself that I must be doing something wrong but the same thing kept happening. I finally installed a second gasket and the pipes sealed up beautifully. The OEM Kawasaki gaskets are thin and it doesn't take much misalignment to result in a leak. As mentioned, Suzuki gaskets are much thicker, almost twice as thick. That should tell you something right there.

So, if one were to want to use the much thicker Suzuki gasket...anyone have that part number??

BOOM_FIST wrote: So, if one were to want to use the much thicker Suzuki gasket...anyone have that part number??

They are generic whichever style you buy, Ebay is a good source for both types, i believe the 900/1000 use 42mm ones, i have only had problems with sealing on one exhaust system, that was a shark racing system i had on a 750 Zephyr, it had no lip on the headers, i resolved this by making aluminum top hat inserts for the headers which increased the area of the mating surfaces, nuts evenly tightened on the collars and not overdone .