HELP for grinding a weld

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

Guys I need any pointers You have for grinding a weld down inside my exhaust pipe. I'm using a dremel tool and I have a couple different wheels. Looking for advice on what to use ! Or is this just going to take forever !!!

Subject: Re: HELP for grinding a weld Tue Apr 16, 2013 11:30 pm

metal bur bit in a die grinder

Subject: Re: HELP for grinding a weld Tue Apr 16, 2013 11:40 pm

X2 they work awesome just be careful they can remove a lot if your not careful

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

You guys are my Hero's !!! I have actually used those before, just forgot about them ! Thanks a bunch !

On my exhaust welds, should I go completely flat or leave a little and round them off ?

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 12:50 am

Completely flat would flow better Id be worried about it breaking at the welds if you went too much maybe james or someone will chime in but i might just take some off and round it to be safe.. i never had stock exhaust so not sure how much id take. my .02

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

Yea, I'm thinking I better leave a little for strength

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 10:46 am

weld it on the outside then it cant break...i think thats what i did when i ran a slip on in 09

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

Brilliant idea !!!

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 11:25 am

KJrhino wrote:: Completely flat would flow better Id be worried about it breaking at the welds if you went too much maybe james or someone will chime in but i might just take some off and round it to be safe.. i never had stock exhaust so not sure how much id take. my .02

I went flush, being very careful not to take any material away from the tubing, just bead material.

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 12:57 pm

rotary file in die grinder, X2 on the outside weld, on the next weld if you leave a small crack for your weld to penetrate you should have very little clean up on the inside an a stronger weld also a flapper disc on a small 4" grinder does great on clean up where it will reach

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 6:50 pm

x2 small bead on the outside did you take any pics of the weld in the heaser tube

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 7:06 pm

let us know how it works out i my try it this weekend, do you need new gaskets as well?

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

I had an order sitting at JBS waiting to ship, so I just had Him add donuts gaskets to it. After I got it out tho, I didn't need them. I'm still waiting on diff seal, so It will be a little bit before I put it back together.

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 7:38 pm

cool maybe i should order some to be safe?

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

Most people say You will not need them, But I didn't want to get it tore down and then need them.

Subject: Re: HELP for grinding a weld Wed Apr 17, 2013 8:27 pm

cool if need be my local yamaha deal might have them in stock

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 6:51 pm

looks good gona rain fri think i'm gona give it a try since im only working 4 12's now thanks to omamas coal hatin Evil or Very Mad

Posts : 1337 Join date : 2013-03-10 Location : Arkansas

Can't wait to fire mine up and see how much difference it makes. Was very surprised at how big the weld was.

I did not not grind mine completely flat. I left just a little hump, then rounded it off and polished.

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 8:19 pm

sounds good let us know when your up and runnin

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 8:31 pm

Are you going to rejet Firefighter?

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 8:49 pm

i wouldn't think you would need to

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 8:50 pm

also did you weld around the outside of the flange or leave it alone

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 9:01 pm

That's what I want to hear! Twisted Evil

Subject: Re: HELP for grinding a weld Thu Apr 18, 2013 9:02 pm

The part that's like a little coupling, I welded it all up because mine was backfiring, no problems since!

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