630 muffler-VH4D engine

[ancomcabs]

Any ideas for a replacement other than the dealer?

 

[6brnorma]

On my 610s (same engine) I use a NAPA #22769. I always weld on two gussets (very roughly 3 x 4) on either side for support, leave enough room for the clamp. They last us years....sorry I haven't done a price comparison for probably 15 years.

 

[ancomcabs]

On my 610s (same engine) I use a NAPA #22769. I always weld on two gussets (very roughly 3 x 4) on either side for support, leave enough room for the clamp. They last us years....sorry I haven't done a price comparison for probably 15 years.

Hey thanks for the tip, can you post or send a picture? ancomcabs at gmail dot com

 

[OldMachinist]

On my 610s (same engine) I use a NAPA #22769. I always weld on two gussets (very roughly 3 x 4) on either side for support, leave enough room for the clamp. They last us years....sorry I haven't done a price comparison for probably 15 years.

The triangle note says the its arc welded.

 

[Tigerhaze]

The triangle note says the its arc welded.

I'm guessing if someone went this NAPA route, it wouldn't be a spark arresting muffler so may have issues if working in National Forest or states that require a spark arrestor?

 

[ancomcabs]

I'm guessing if someone went this NAPA route, it wouldn't be a spark arresting muffler so may have issues if working in National Forest or states that require a spark arrestor?

I'm with you there but I use this for my parking lot snow removal and misc work around my house

 

[ancomcabs]

I'm with you there but I use this for my parking lot snow removal and misc work around my house

6brnorma any other modifications? at 65 bucks the Napa unit is worth a try but my existing muffler looks like it mounts with a flange to the manifold and the exit thru the top screen is not close to what the Napa dimensions show?

 

[6brnorma]

I'm with you there but I use this for my parking lot snow removal and misc work around my house

ancomcabs.......I wouldn't dare post a pic of my welding here.....it would be hard on the hearts of actual welders. I just measured one of the new mufflers and it has a very short 2" (in length) inlet neck. We weld the gusset (roughly 3" x4") down about 1 1/4" onto the neck leaving enough room for the clamp and then about 4" on the body of the muffler.....one on each side. Not using the gussets will lead to early failure at the neck due to vibration. Wire feed works best for me or you need to be a much better 'stick' man then myself. I'm not familiar with a 630 but on a 610 the muffler sits horizontal with the outlet pointed out the back.

 

[Tigerhaze]

ancomcabs.......I wouldn't dare post a pic of my welding here.....it would be hard on the hearts of actual welders. I just measured one of the new mufflers and it has a very short 2" (in length) inlet neck. We weld the gusset (roughly 3" x4") down about 1 1/4" onto the neck leaving enough room for the clamp and then about 4" on the body of the muffler.....one on each side. Not using the gussets will lead to early failure at the neck due to vibration. Wire feed works best for me or you need to be a much better 'stick' man then myself. I'm not familiar with a 630 but on a 610 the muffler sits horizontal with the outlet pointed out the back.

The 610s and 630s use a different muffler (I own both). On the 610, the muffler outlet can be anywhere because it has an open rear and on mine the muffler outlet faces back, With the 630, as described the nuffler inlet bolts directly to the exhaust manifold and the outlet is offset near the right side to discharge out the opening within the closed rear. They are defnitely two different muffler setups, even though they are the same base motor.

 

[flyerdan]

ancomcabs.......I wouldn't dare post a pic of my welding here.....it would be hard on the hearts of actual welders. I just measured one of the new mufflers and it has a very short 2" (in length) inlet neck. We weld the gusset (roughly 3" x4") down about 1 1/4" onto the neck leaving enough room for the clamp and then about 4" on the body of the muffler.....one on each side. Not using the gussets will lead to early failure at the neck due to vibration. Wire feed works best for me or you need to be a much better 'stick' man then myself. I'm not familiar with a 630 but on a 610 the muffler sits horizontal with the outlet pointed out the back.

I think when mine needs replaced I'll get some stainless tubing and sheet from the scrap yard and tig one up. Would like to see one autopsied to get the layout. Shouldn't cost more than $30-40 for used materials and it should last forever.
Ebay yields up a Wisconsin muffler that could be adapted for Bobcat use fairly easily if it isn't too long. Cut the exit down and weld a 90 degree sweep to point to the rear and reuse the mounting flange.

 

[6brnorma]

I think when mine needs replaced I'll get some stainless tubing and sheet from the scrap yard and tig one up. Would like to see one autopsied to get the layout. Shouldn't cost more than $30-40 for used materials and it should last forever.
Ebay yields up a Wisconsin muffler that could be adapted for Bobcat use fairly easily if it isn't too long. Cut the exit down and weld a 90 degree sweep to point to the rear and reuse the mounting flange.

This muffler is not going to work for you. Sounds like you may have too bite the bullet.

 

[ancomcabs]

This muffler is not going to work for you. Sounds like you may have too bite the bullet.

This is what mine looks like, quick patches and all: http://screencast.com/t/6hcOoiTR

 

[ancomcabs]

This is what mine looks like, quick patches and all: http://screencast.com/t/6hcOoiTR

http://screencast.com/t/6hcOoiTR

 

[Tazza]

http://screencast.com/t/6hcOoiTR

As long as it does the job. I have been toying with the idea of making one or two from exhaust tubing to replace two sad ones i have.
With your links, put a space before them and they should go blue which means they will work. Its easy for the mods to fix if they refuse to work still.

 

[Tigerhaze]

As long as it does the job. I have been toying with the idea of making one or two from exhaust tubing to replace two sad ones i have.
With your links, put a space before them and they should go blue which means they will work. Its easy for the mods to fix if they refuse to work still.

Hey Anacombs- my muffler is blown out on the left end (closest end in the photo). Want to swap halves? lol

 

[Tigerhaze]

Hey Anacombs- my muffler is blown out on the left end (closest end in the photo). Want to swap halves? lol

I'm not wanting to pull the trigger with biting that bullet. My local dealer (KC Bobcat) quoted $380+ tax for the muffler on my 630. I tried IM Bobcat and they could save a whole $10 over my local delaer, before shipping.
I think I will try a custom muffler shop- I am not set up to manufacture my own mufflers at this time. At this point I would be happy if I could get a muffler made for under $250.

 

[ancomcabs]

Hey Anacombs- my muffler is blown out on the left end (closest end in the photo). Want to swap halves? lol

Sure as long as I get the two good halves! My welding skills are limited and I could not tackle a custom muffler, no mig welder anyways Looks like the $242.97 price I got from the dealer may be my best option

 

[anti]

Hey Anacombs- my muffler is blown out on the left end (closest end in the photo). Want to swap halves? lol

My right side end had blown out too. I cut out a round piece of 1/16" thich sheet metal to match the end diameter and borrowed a friends MIG welder to seal it to the end. It looks horrible, but it looks like it saved me some cash!