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Dingbatt

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#277151 29-Sep-2020 11:44
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We have a 1959 Ferguson 35 Petrol tractor that we use to tow and launch a boat off the beach. The muffler on the downswept exhaust has rusted out and needs to be replaced. I bought a proper Fergy muffler but it appears that a previous owner has fitted a non standard exhaust pipe between the manifold and muffler because the inlet to the new muffler is a totally different diameter.

 

So I now have two options. I can purchase the proper Fergy downswept exhaust kit, that isn’t too expensive, or I can fit a non-standard muffler to the existing exhaust.

 

My biggest concern with retro-fitting the original is being able to undo the flange bolts at the manifold. I doubt they have been moved in 20 years and the last thing I want to do is shear them off.

 

If I go with the non-standard, do I need to be careful what I fit? The reason being if it’s a car muffler (a Coby I suspect) then I would like to fit something quieter. I’m sure the neighbours would appreciate something quieter when we set out on our early morning fishing expeditions! I’m a little unsure how closely a muffler needs to be matched to the engine (back pressure and all that).

 

It is a utility vehicle rather than a show machine, so it being non-standard doesn’t worry me too much. Mind you once you start restoring something........





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wally22
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  #2575756 29-Sep-2020 11:56
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Did a quick search and there are several different sized mufflers and pipes for the 35 listed here(below). There is probably a club somewhere that has all the info. I found that downswept exhausts on other makes often used a smaller muffler than the upright ones. Presumably for space considerations.

 

Plus 1 for a quieter sound.

 

https://www.yesterdaystractors.com/cgi-bin/store/model_parts.cgi?SearchArea=Massey-Ferguson&&md=35&cat=Exhaust%20System&r=mcats


Dingbatt

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  #2575760 29-Sep-2020 12:11
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Yes. I have done the requisite web search for clubs, etc. I finally got in touch with the previous owner, the current exhaust is fabricated from steam pipe! So it’s not a standard car exhaust size either.

 

Makes me lean towards putting it back to original. Perhaps not super quiet, but better than the level it is at the moment with a 5cm hole in the muffler!





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MikeAqua
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  #2575796 29-Sep-2020 12:54
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It would be worth trying a good penetrating oil (and every other trick in the book up to and including witchcraft) on those flange bolts.  If you can the whole assembly off you could take it to a muffler shop.  Best option IMO unless you can tow the whole tractor to a muffler shop?

 

The other option is an exhaust flexi joiner from the steam pipe to a new muffler.  They come in a variety of sizes, sometime different sizes at each end https://www.sincocustoms.com/exhaust-flexi/ 

 

Photos would help if you have any handy.

 

I grew up launching boats with a Farmall tractor.





Mike


Dingbatt

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  #2575931 29-Sep-2020 15:32
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The exhaust is only mounted at the manifold, so a flexible coupling probably won’t be rigid enough (thanks for the suggestion though).

 

I have bitten the (financial) bullet and ordered the kit to put it back to original. It will make life simpler in the future to know it has standard parts. It will probably end up just as cheap as getting a stainless car muffler and modifying it to fit.
The most painful part is the tractor is located a 2+ hour drive away from home, there is no ‘local’ muffler shop and I don’t have a vehicle capable of towing something as heavy as even this little tractor on a trailer. It’s the worst feeling when you get there and something is the wrong size or a vital component is missing (or you forgot that ‘special’ tool).

 

The tractor is over 60 years old and spent a chunk of its life outside (garaged for the last 15) but is a testament to how well built it is that it is in such good condition.

 

I too used to drive a Farmall tractor when I was a kid. A Model H.





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