Exhaust modification

[yugo]

In the past, there have been discussions on the pros and cons of downsweep exhaust systems. We decided on the downsweep exhaust due to tree branches as well as the noise. So we went to the muffler shop, and got one ninety degree and one forty-five degree with long ends, two hangers, and a weld on manifold flange. Brought the pieces home, measured and cut, welded it together (and for you old timers - before the days of Mig & Tig welders, we welded it together with an acetaline torch & steel rod. We're not good at it, but it's together. Thank heaven for a grinder and good paint!) Then I installed an oversized and Ugly muffler. I'm very pleased with no exhaust noise - though I still have the diesel rattle, but the noise level is greatly reduced. P.S. We did save the old muffler in one piece, so it could be put back on the tractor. If interested, please see attachment. Yugo

 

[JerryG]

Good job, nice, clean and professional looking.

 

[Harrygoodwrench]

Looks like a great modification. I've been thinking about underbody exhaust too. Having the exhaust blow back in my face gets to me and sure as heck not healthy for you.

 

[Boltonpower]

"We're not good at it"???? What are you complaining about?
Thats a nicer looking job than the factory down pipe..

Regards
Graham /forums/images/graemlins/grin.gif

 

[bluechip]

Yes, very nice, you taking orders? Notice you have a filter on the suction side of your hydraulics, has that caused any problems with pump cavitation, etc?

 

[Affordable]

Excellent looking job Yugo,also your parts will go out Monday.thanks for the buisness

Tommy
Affordable Tractor

 

[TruChaos]

I like your down pipe better than the factory setup. It's clean and simple.

I ordered the downswept pipe with my tractor and discovered that it wouldn't fit with the FEL in place. So, I had to have a shorter manifold pipe made at a local muffler shop.

Take a look at the attached picture.

 

[billbill1]

That looks great William, if you find it missing someday, please don't come and look at my tractor. What did it cost (if you don't mind me asking)? I wonder if it would be out of the way of my FEL?

 

[yugo]

Hey, Billbill1 - I do know where you live. I made this exhaust system wide to clear the starter and hydraulic filter, so there wouldn't be any heat transfer. Probably wouldn't work with the FEL. And for the price - approximately $70, includes the $29.95 ugly muffler. Sure wanted one of those polished stainless steel Honda Zroom mufflers, but going for less noise, we opted for the Ugly muffler.

Truchaos - if you're reading this - If you would, please - tell us more about your system. Did you install the Ugly muffler? Was it worth the effort? We're sure pleased with ours.

P.S. Bill - this was a two six pack job, 1 to design it, and 1 to put it together!! Don't tell Dee. Yugo

 

[TruChaos]

Your setup is a steal ! Muffler and custom bent pipe for $70 can't be beat. You should make them and sell them on Ebay! Just factor in some profit and beer money and you're set. I'm pretty sure you could write off that beer money as operating expenses. It's an essential part of the manfacturing process correct? /forums/images/graemlins/smile.gif

If by the "ugly one" you mean the muffler that came with the tractor, yes that's the one I used.

The down swept muffler is the same as the vertical unit. The only difference is there's an extra pipe (long one) which connects the manifold pipe and muffler on the down swept setup.

I initially set mine up in the down swept position then had to flip it up so I could mount the FEL. All that noise and breathing the exhaust was quite a contrast. So I had the new manifold pipe made for $30. Not breathing all that diesel crap is worth 10 times that much in my opinion. After using the tractor for a few hours, my lungs felt scorched. Now, I'm breathing clear air. /forums/images/graemlins/cool.gif

 

[billbill1]

Yugo, I would call Dee right now but I can't call and be on the computer at the same time. @ six packs ain't nothing, what are you saying, bout an hour? Build me one and I'll give you the 2 six packs (better make it 4 six packs if I help) and I'll give you $75 and lots of good company.

 

[yugo]

Bluechip - I'll try to answer your question about the hydraulic filter. It's still in the testing and experimental stage. I installed it a year ago, at 140 hours on the tractor. We've just rolled over to 300 hours, it's ok so far ? We know enough about hydraulic systems to be dangerous!! I worked on forklifts for 30+ years, and we know you're not supposed to put a filter in the suction line, BUT we did remove the filter screen in the hydraulic tank to eliminate that hassle. I'll change the filter out way early, and open it up to see what's going on inside the filter. If the pump dies, I will be sure to post my OOPs. Thanks for asking - Yugo

 

[TruChaos]

I'm curious. I've heard that placing a filter on a suction line can damage the pump. Obviously, they can't be placed on the high pressure side, so why do they make and sell hydraulic filter assemblies if they cause damage???

 

[Soundguy]

Very nice job.. you are an artist.

Soundguy

 

[yugo]

Truechaos - To make a long story short, hydraulic filters are supposed to be installed in the return line not the inlet, or suction side. Any restriction will hamper the volume of flow to the pump. Normally, the rule of thumb, is the inlet to the pump is three sizes the diameter of the output, but these Jinma tractors are smaller than the norm. I'm not sure how they get away with using such small inlet tubing. But the punchline is: be sure to keep the screen in the hydraulic tank clean, to avoid any restrictions so the pump doesn't self destruct. Now that I have exhausted my knowledge have a great day. Yugo

 

[Soundguy]

</font><font color="blue" class="small">( hydraulic filters are supposed to be installed in the return line not the inlet )</font>

Though it's generally true, it's not a universal truth.

I've worked on many many hydraulic systems that are designed with inlet and suction side filters, and I'm not talking about just plain mesh screens either.

Soundguy