Allis B muffler replacement help
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=180426
Printed Date: 19 Apr 2024 at 7:43am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Allis B muffler replacement help
Posted By: BraedonAllisB
Subject: Allis B muffler replacement help
Date Posted: 09 May 2021 at 1:13am
Hey quick question, I'm looking to replace the exhaust on my Allis B with a new exhaust with muffler to make it a bit quieter. I was looking and are there any bolts holding the exhaust on. Or should it just pull out. Thanks for any help. Might just be rust welded maybe? 
|
Replies:
Posted By: PaulB
Date Posted: 09 May 2021 at 7:13am
|
When you look where the muffler joins the manifold. there is a lock bolt the is most likely rust welded. This may or may not be threaded in the manifold. For that style muffler your looking at a through pinch bolt is how it will be attached. However as you already have the large hole in you hood, I'd suggest getting the later style Nelson from Alex here on the forum. It will have a flange on the bottom of the muffler that extends down the manifold to be secured with 2 bolts into the manifold. The Nelson muffler will cost more and it will also outlast the one you'll get for TSC. ------------- If it was fun to pull in LOW gear, I could have a John Deere. If you can't make it GO... make it SHINY |
Posted By: steve(ill)
Date Posted: 09 May 2021 at 8:21am
|
Look at your straight pipe and see how it is attached... Does it slide INTO the manifold ? Some manifolds have been MODIFIED by threading the hole and adding a pipe nipple, then the new muffler slides OVER the nipple with a regular muffler clamp.. Make sure what you have before you buy. ------------- Like them all, but love the "B"s. |
Posted By: Dusty MI
Date Posted: 09 May 2021 at 8:58am
|
Be carful how high it goes, low tree limbs are hard on exhaust pipes & manifolds. Dusty ------------- 917 H, '48 G, '65 D-10 series III "Allis Express" |
Posted By: C in Concord
Date Posted: 09 May 2021 at 11:37am
There should be a clamp bolt that engages with an open slot in the bottom of the muffler, as shown below. As another option, you could go with a thru-type muffler (left item #4 above). The thru-type looks a little better, in my opinion, but wasn't available from TSC or Fleet Farm last I checked. I got mine from here: https://www.jensales.com/products/allis-chalmers-muffler-thru-hood-vertical-round-body-acs103.html" rel="nofollow - Allis Chalmers Muffler Thru Hood - Vertical Round Body | ACS103 (jensales.com) The Nelson equivalent from Alex is available here: https://www.ebay.com/itm/224305178149?hash=item3439a16625:g:KHAAAOSwOOhf89Fg" rel="nofollow - Allis-Chalmers B C CA D10 D12 D14 D15 Tractor OEM NELSON MUFFLER 233450 USA! | eBay Ben ------------- Leave things better than you found them. 1941 Model C (restored 2020) |
Posted By: BraedonAllisB
Date Posted: 09 May 2021 at 4:15pm
I'm geussing this is the bolt I need to take out...or what's left of a bolt... It's hard to see but it's at the top of the manifold 
|
Posted By: steve(ill)
Date Posted: 09 May 2021 at 4:33pm
YEA... that wont be coming out anytime soon !!... You can grind flush, drill it out , if it wont PUNCH out .......replace it or thread a pipe nipple inside for the exhaust to set OVER.. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 09 May 2021 at 4:37pm
|
you might even want to cut the exhaust pipe off FLUSH so you can see inside and help grab the bolt head.
another possibility is to cut the pipe off with 2 inches sticking out... Then buy a muffler that will slide OVER the old pipe ( assuming the pipe is still good).... I actually have a tractor like that, i slide a 90 degree elbow over it that goes thru the hood and points forward to the left side of radiator. Mounted the muffler horizontal so it dont catch braches under the trees.  ------------- Like them all, but love the "B"s. |
Posted By: HD6GTOM
Date Posted: 09 May 2021 at 9:38pm
| Mine has the pipe cut off just above the hood. Dad bought a new muffler for a JD 420 Utility tractor he owned. The muffler hung on the wall in the milking barn for years. It slid over the protruding pipe on the B. Works good and gets the exhaust out of my face. |
Posted By: Steve in NJ
Date Posted: 10 May 2021 at 6:57am
Underhood mufflers are cool, but two problems there. Paint peels off the hood eventually from the heat, and the exhaust is constantly in yer' face. Upright version is better providing you don't have a lot of tree's to go under like Steve does. When I first started restoring my B 20 years ago, my manifold looked just like yours with the bolt rusted off. I did just what Steve explained, I ground the bolt flush, found center and drilled my butt off. I actually got to the threads and saved the threads in the manifold! I was amazed myself that it came out that good! I used a lot of Antisieze on the new bolt when I re-installed the new muffler....  Steve@B&B ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |
Posted By: DSeries4
Date Posted: 10 May 2021 at 9:29pm
Use brass bolts. They will not rust like regular carbon steel bolts. ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Steve in NJ wrote:Posted By: Steve in NJ
Date Posted: 11 May 2021 at 7:04am
|
The problem with Brass bolts is they can fracture in a high vibration area and fail. I wouldn't think that particular area would be good spot for a Brass bolt. JMHO. I used a grade 5 S/S bolt in my B, and antiseized the snot outta' it.... LOL! Steve@B&B ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |
Posted By: AC since 12
Date Posted: 11 May 2021 at 9:08am
| My 40 B has a bolt that threaded thru from the front of the manifold where the muffler sits down on it. The bolt came out "pretty easy" and I slipped the new muffler on and tightened it up. No big deal. |
Posted By: PaulB
Date Posted: 12 May 2021 at 6:58am
when you have a problem with low hanging branches, use loppers to trim everything you can reach while mowing I carry a pair on the CA that I mow with. It's foolish to have the same branch smack you in the face every week  ------------- If it was fun to pull in LOW gear, I could have a John Deere. If you can't make it GO... make it SHINY |