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mufflerboltz 
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Joined: 03 Oct 2012
Location: New Glarus, Wi
Points: 371
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 Topic: straight pipe inlet o.d.?
Posted: 05 Sep 2013 at 10:01pm |
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Making a straight pipe for a friends wd45 and do not have a muffler or manifold close by to measure to find out the out side diameter of the inlet pipe that inserts into the manifold, so if anyone could help me out with the size would be greatly appreciated! Thanks.
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patrickmull
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Joined: 11 Jan 2011
Location: Casey IL
Points: 893
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Posted: 06 Sep 2013 at 5:08am |
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I made mine out of thin wall stainless tubing I used 3" it went over the outside of the manifold i bored out the manifold so it would breath i welded a strap on it and bolted it to the hole in the manifold
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mufflerboltz
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Joined: 03 Oct 2012
Location: New Glarus, Wi
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Posted: 06 Sep 2013 at 6:21am |
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i need to make this so he can change it back to a muffler if he wants to. I know the easiest way to do it would be to hack the bottom side of a muffler off and stick a chrome pipe on it and weld away but i have a crap load of exhaust pipe at work that is cheaper and easier for access then going to buy a muffler to cut up.
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Charlie175
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Joined: 11 Sep 2009
Location: Shenandoah, VA
Points: 6357
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Posted: 06 Sep 2013 at 8:22am |
should be 1 5/8" inlet
If possible make a drip edge for it so water won't run in the manifold
Edited by Charlie175 - 06 Sep 2013 at 8:23am
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Gary
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Joined: 13 Sep 2009
Location: Peterborough,On
Points: 5323
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Posted: 07 Sep 2013 at 5:08am |
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Allis Muffler is #70229531.
Here is a link to 'aftermarket' muffler AC-4.
It's I/D shows as 1 5/8", O/D "could be" 1 3/4"
Gary
http://www.tractorsupply.com/en/store/muffler-aliss-chalmers-mfg-ac-4
PS note the aliss LOL
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mufflerboltz
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Joined: 03 Oct 2012
Location: New Glarus, Wi
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Posted: 07 Sep 2013 at 6:55am |
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thanks Gary, I tried to research it but all I get in the I.D. of 1 5/8''. I have a muffler to go off of now so I'll just take that to the shop and make it all according to the measurements of the muffler.
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wi50
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Joined: 24 Sep 2010
Location: weegieland
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Posted: 07 Sep 2013 at 9:45am |
I just measured some manifolds I have for parts, 1.75" is the bore size of the manifold outlet.
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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"
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mufflerboltz
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Posted: 07 Sep 2013 at 6:38pm |
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yup ended up using 1.75 pipe that i bell flared and the bendix bender and then weld a 18'' long by 3'' wide exhaust tip, after that i took a 4'' section of 3'' pipe and expanded on end to 3.5'' and welded that to the bottom end of the tip for the clamp to bite against. Turned out nice and bolted on solid, kinda of thinking of making a few to sell.
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