Must replace copper gasket?

Titan777
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Titan777
Edited Date/Time 7/24/2019 12:15am
Hi guys, I'm installing my new FMF and wanted to know if I must replace the copper exhaust gasket?
Can't even take it out, it's stuck.

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Paul_Pitzonka
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Paul_Pitzonka 7/1/2019 9:37am
7/1/2019 9:37am
It’s a good idea, it’s a crush gasket designed for one time use... sometimes when they’re stuck you can get the out with a pick or very carefully with a screwdriver and a small hammer
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Titan777
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Titan777 7/1/2019 9:55am
7/1/2019 9:55am
Paul_Pitzonka wrote:
It’s a good idea, it’s a crush gasket designed for one time use... sometimes when they’re stuck you can get the out with a pick or...
It’s a good idea, it’s a crush gasket designed for one time use... sometimes when they’re stuck you can get the out with a pick or very carefully with a screwdriver and a small hammer
Thanks!
Do I need to put some grease on the copper gasket? (Permatex Aluminum Anti-Seize?).
I know I should put some on the engine/exhaust port bolts.
nage0139
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nage0139 7/1/2019 10:42am
7/1/2019 10:42am
You don't need anything with copper gaskets, just throw them on and torque to spec. But yes, replace it, you don't want an exhaust leak.
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kb228
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kb228 7/1/2019 11:05am
7/1/2019 11:05am
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper gasket.
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Titan777
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Titan777 7/1/2019 11:49am
7/1/2019 11:49am
kb228 wrote:
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper...
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper gasket.
I thought that's where I need to put copper silicone.
Can you show me by photos where to put the anti seize and where the copper silicone?
kb228
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kb228 7/1/2019 12:38pm
7/1/2019 12:38pm
kb228 wrote:
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper...
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper gasket.
Titan777 wrote:
I thought that's where I need to put copper silicone. Can you show me by photos where to put the anti seize and where the copper...
I thought that's where I need to put copper silicone.
Can you show me by photos where to put the anti seize and where the copper silicone?
You can use either. I think copper silicone is the best option of the two. You just smear a thin coat about 1/2” down the pipe where the pipes meet so they dont get stuck together.
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Paw Paw 271
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Paw Paw 271 7/1/2019 1:14pm
7/1/2019 1:14pm
If you don't replace that gasket , you will have a decal pop due to a lean condition created by that gasket leaking.

Paw Paw
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Titan777
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Titan777 7/1/2019 6:12pm
7/1/2019 6:12pm
Thanks guys.

And the aluminum anti-seize grease will go where the bolts get hot, right?
Titan777
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Titan777 7/8/2019 1:18pm
7/8/2019 1:18pm
kb228 wrote:
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper...
yes replace the gasket. I usually put a thin coat of anti seize between the header, mid pipe, and muffler connections. But not by the copper gasket.
Titan777 wrote:
I thought that's where I need to put copper silicone. Can you show me by photos where to put the anti seize and where the copper...
I thought that's where I need to put copper silicone.
Can you show me by photos where to put the anti seize and where the copper silicone?
kb228 wrote:
You can use either. I think copper silicone is the best option of the two. You just smear a thin coat about 1/2” down the pipe...
You can use either. I think copper silicone is the best option of the two. You just smear a thin coat about 1/2” down the pipe where the pipes meet so they dont get stuck together.
There's no room for the oem rubber mount that goes into the muffler mounting bolt. How do I install it properly?
Just use the oem bolt? (I don't have any washers, etc..) Seems kind of weird.
Titan777
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Titan777 7/8/2019 1:41pm
7/8/2019 1:41pm
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part.
The manual just says to put a new copper gasket and that's it.
kb228
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kb228 7/8/2019 1:44pm
7/8/2019 1:44pm
Titan777 wrote:
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part...
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part.
The manual just says to put a new copper gasket and that's it.
The manual is correct. Copper sealant is between the joints in the pipe only. Not at the head. Thats what the crush washer is for
Titan777
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Titan777 7/8/2019 2:38pm
7/8/2019 2:38pm
Titan777 wrote:
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part...
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part.
The manual just says to put a new copper gasket and that's it.
kb228 wrote:
The manual is correct. Copper sealant is between the joints in the pipe only. Not at the head. Thats what the crush washer is for
Great!
What about the muffler mounting bolt? It doesn't have rubber / washers. I hope it won't vibrate and damage my frame like the KX450.
kb228
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kb228 7/8/2019 2:45pm
7/8/2019 2:45pm
Titan777 wrote:
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part...
By the way do I need to put any high temp silicone where the pipe connects to the engine? Couldn't find any info about that part.
The manual just says to put a new copper gasket and that's it.
kb228 wrote:
The manual is correct. Copper sealant is between the joints in the pipe only. Not at the head. Thats what the crush washer is for
Titan777 wrote:
Great!
What about the muffler mounting bolt? It doesn't have rubber / washers. I hope it won't vibrate and damage my frame like the KX450.
Should be fine. The Ti5 pipe on my kx450 is completely hard mounted and theres no issues. Put the pipe on and ride man. Dont worry so much.
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Titan777
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Titan777 7/8/2019 4:16pm
7/8/2019 4:16pm
kb228 wrote:
Should be fine. The Ti5 pipe on my kx450 is completely hard mounted and theres no issues. Put the pipe on and ride man. Dont worry...
Should be fine. The Ti5 pipe on my kx450 is completely hard mounted and theres no issues. Put the pipe on and ride man. Dont worry so much.
Finally ready to ride 😍😍😍



8
San Buenaventura 7/24/2019 12:15am
7/24/2019 12:15am
Titan777 wrote:
Finally ready to ride 😍😍😍 [img]https://p.vitalmx.com/photos/forums/2019/07/08/359009/s1200_20190709_003258.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/07/08/359008/s1200_20190709_020942.jpg[/img]
Finally ready to ride 😍😍😍



Nice looking pipe. What FMF pipe is that? Didn’t know the megabombs came that blue’d
Titan777
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Titan777 7/25/2019 2:37pm
7/25/2019 2:37pm
Titan777 wrote:
Finally ready to ride 😍😍😍 [img]https://p.vitalmx.com/photos/forums/2019/07/08/359009/s1200_20190709_003258.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/07/08/359008/s1200_20190709_020942.jpg[/img]
Finally ready to ride 😍😍😍



San Buenaventura wrote:
Nice looking pipe. What FMF pipe is that? Didn’t know the megabombs came that blue’d
Thanks! It doesn't come like that.
It comes like this:


And i made it like this:




2
pkiczuk
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pkiczuk 7/26/2019 5:03am
7/26/2019 5:03am
She sure is pretty! Nice work man!
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kb228
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kb228 7/26/2019 5:08am
7/26/2019 5:08am
Titan777 wrote:
Finally ready to ride 😍😍😍 [img]https://p.vitalmx.com/photos/forums/2019/07/08/359009/s1200_20190709_003258.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/07/08/359008/s1200_20190709_020942.jpg[/img]
Finally ready to ride 😍😍😍



San Buenaventura wrote:
Nice looking pipe. What FMF pipe is that? Didn’t know the megabombs came that blue’d
Titan777 wrote:
Thanks! It doesn't come like that. It comes like this: [img]https://p.vitalmx.com/photos/forums/2019/07/25/362636/s1200_SmartSelect_20190620_013614_Gallery.jpg[/img] And i made it like this: [img]https://p.vitalmx.com/photos/forums/2019/07/25/362637/s1200_20190709_223543.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/07/25/362639/s1200_LRM_EXPORT_486747593716841_20190709_201400425.jpg[/img] [img]https://p.vitalmx.com/photos/forums/2019/07/25/362638/s1200_LRM_EXPORT_592079398617806_20190712_042943978.jpg[/img]
Thanks! It doesn't come like that.
It comes like this:


And i made it like this:




How did you get it to blue so evenly? When i did mine its nowhere near that even.

1
Titan777
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Titan777 7/26/2019 10:29am
7/26/2019 10:29am
kb228 wrote:
How did you get it to blue so evenly? When i did mine its nowhere near that even. [img]https://p.vitalmx.com/photos/forums/2019/07/26/362710/s1200_F6AA445A_F6B6_4365_9960_BECDBDA963DD.jpg[/img]
How did you get it to blue so evenly? When i did mine its nowhere near that even.

I had in my mind the image of how I wanted the colors to spread, once I was done polishing I went to the heating stage and just tried to heat each part evenly until it was light gold and kept heating in the parts I wanted purple and blue. Need to be careful with the heat, I felt like I was paint brushing with heat and that's about it (heating from different distance so it won't leave spots and look like a dalmatian pipe.
After purple it can get to blue real fast and even turn bright blue and you can't change it back, happened to me once but I managed to make it blend in. This is my first time doing something like this.
(I'm a professional graphic designer so I guess it helps with the touch lol).

By the way, the head pipe that goes into the engine went all bright blue after 2-3 rides. Kind of a bummer but I knew it will happen from the heat.

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