GYRT Insert Disassembly?
Posted April 23, 2003 - 11:23 AM
I was mostly interested in getting the 2 pieces apart. Yamaha used some sort of green Loctite (648?) which I'm sure will be a bear to remove.
Posted April 24, 2003 - 04:53 AM
I made a brief attempt by setting the insert on the edge on an anvil and using a sledge hammer and large punch to try to knock out the steel tubes. It didn't budge after a few hard strikes so I quit trying as I thought I might damage the aluminum insert.
I couldn't see what was holding the tubes in place, but it was holding well!
Posted April 28, 2003 - 02:55 AM
I assumed it's a press fit so I was going to try heating the aluminum end with a heat gun before knocking the tube assembly out. I just wasn't sure about the bolt.
Posted April 28, 2003 - 04:03 AM
Posted April 28, 2003 - 08:56 AM
How did you get the bolt out? Heat it or just remove the bolt?
The heat gun shouldn't get hot enough to damage the aluminum. An oxy/acetalene torch probably can.
Well, I got the bolt out no problem. Tried to knock the tubing out like you tried to and it didn't budge. I used a heat gun on the aluminum again, and took a 3/4" drive with a 3/4" socket on the end and inserted it into the aluminum cap. 5 good hits and out it came. It's just pressed in.
I'm going to try running the bike with just the aluminum and see if it still fouls plugs. Hopefully, it's quieter than fully open.
Posted April 28, 2003 - 03:45 PM
Posted April 28, 2003 - 03:53 PM
I figure if it doesn't work, I'll stick the steel in the freezer and heat the aluminum and put them back together and play with the jetting until I get it right.
Posted April 29, 2003 - 04:04 AM
Where in Wyoming did you grow up?
Posted May 04, 2003 - 06:08 AM
Posted May 04, 2003 - 02:39 PM
Posted May 05, 2003 - 03:07 AM
Posted May 05, 2003 - 10:53 AM
I pulled the insert in and out while running to see if I could tell a difference and it is noticeable. Not as quiet as the full baffle but better.
Posted May 05, 2003 - 12:53 PM
If you need to put it back together, put the steel in the freezer and heat the aluminun. It was just a press fit.
Posted September 11, 2003 - 03:40 PM
Posted September 12, 2003 - 11:32 AM
With the pipes out, what db do you think its running? lower than 98? In Cali the law is 96 but... 97.5 is passing.
Posted September 12, 2003 - 11:44 AM
It's very easy to take apart. Pull the bolt and put the thing in the freezer. Take it out, heat the aluminum only with a hair drier or heat gun. Place a socket in the end and support the aluminum half, give it a small whack and out it pops.
To put it back, freeze the steel tubes, heat the aluminum and push it together. You can use a little WD-40 to make it slide easier. It's just a press fit.