JD 3005 exhaust mods/replacement

[dieselcrawler]

After 3 years of use, the exhaust on my 3005 has turned the back of the loader bucket black. A minor issue, but I see no reason to send it out the lower corner, Im sure it contributes to the chaff and gunk that gets blown around into the radiator screen. And its tiny. Any motor can breath better... So Im gonna try something...

Remove the stock muffler and exhaust pipe, save it, intact. I may decide it is better than my redneck hotrod tractor junk I come up with.

So here is what it is in stock form:





So far I have made a plate to fit the manifold below the muffler, into which I will weld the new, larger pipe.





The general plan is to follow the route of the stock exhaust, out under the side panel in the stock location, and then up along the grill guard and limb riser to over the canopy of my ROPS/FOPS cage. Straight pipe? Perhaps. Might be obnoxiously loud... If so, I will devise a muffler, or just fit in the smallest glasspack I can find. The pipe will be about half an inch larger diameter than stock. Which will be huge for the 1.3L motor!

 

[Rustyiron]

How about a motorcycle muffler? Small and the right shape. Many Harley dealers have a pile of new factory pipe's in more or less a junk pile from when they install a performance set up. A little chrome would really "redneck hotrod" things up:laughing:

 

[ovrszd]

Thanks for the link and thread Greg. Following.

 

[andy1981]

Does John Deere make a vertical exhaust kit as an accessory for your model, I know they do for a lot of the 3 & 4 thousand series tractors they actually have a spot un the underside of the hood were to cut out for the stack and they still use the factory muffler

 

[ovrszd]

I don't see any turbo stuff, is it non-turbo? If so, yeah it may be a bit obnoxious without a muffler.

 

[spruce Deere]

I ran my 790, wich is a 3005 with 790 stickers without a muffner when I did the valves. It was not that obnoxious right out of the manifold like that

 

[ovrszd]

He might get by then. Adding pipe diameter and running it the route he's choosing should help as well.

 

[dieselcrawler]

There is a factory vertical system available. Im a cheap ba$t@rd, I'll likely have less than $10 invested in this... Ive got all the pipe 'in stock'! *grin*

No turbo, yet... Thats phase 2... That IS gonna cost a few bucks. But I'm also concerned about trying to make a 35 hp tractor out of one designed for its stock 27 hp. I run it hard as it is... What I really need is a bigger tractor.

 

[sixdogs]

Years ago there was talk that running without a muffler can burn valves. Is that an old wive's tale?

 

[RoyJackson]

Years ago there was talk that running without a muffler can burn valves. Is that an old wive's tale?

Can't say anything about diesels, but running a gas engine with a free flow exhaust could cause the engine to run lean...and hotter then it should which could result in burned valves.. In the days of carburetors, it was a matter of adjustment to make the mixture a bit richer or re-jetting.

 

[bigtiller]

I ran my 790, wich is a 3005 with 790 stickers without a muffner when I did the valves. It was not that obnoxious right out of the manifold like that

Did you drive it on Sunday mornings?

http://www.tractorbynet.com/forums/rural-living/371374-sunday-noise.html

 

[dieselcrawler]

Ohhh.... Yer slick... A little inter-thread reference... *grin*

Im not often out early enough on a sunday to bother anybody, but I plan to muffle the sound somehow, if needed. Currently, my lil tractor isnt much louder than my grandma's Singer sewing machine. (RIP Grandma, thanks for the sewing machine!)

 

[dieselcrawler]

A few quick cuts with a chop saw... Gives you an idea of how this will shape up.



This is just scd 40 pipe, intentionally using heavywall close to the manifold, due to the highest heat will be there, immediately going into a bend.

 

[ovrszd]

I wondered how you were gonna do that. I have a very good electric/hydraulic pipe bender. Not sure it could make that bend that short. Nice work!!

 

[dieselcrawler]

I havent welded the pieces together yet, and you're right, no bender is likely to go that tight on a cold bend, with seamed pipe. I have a bender, and might use it on one of the bends in the thin wall tube Im using for the longer sections.

 

[sixdogs]

I did something similar and used a dragster exhaust mandrel bend pipe. It fit and looked perfect, cost under $20 and was a perfect bend as sharp as your potential bend. I think I bought it a Summit Racing. If it could take a couple thousand horsepower (or whatever) four inches from the head, it could take my 30 HP tractor.

 

[ovrszd]

I did something similar and used a dragster exhaust mandrel bend pipe. It fit and looked perfect, cost under $20 and was a perfect bend as sharp as your potential bend. I think I bought it a Summit Racing. If it could take a couple thousand horsepower (or whatever) four inches from the head, it could take my 30 HP tractor.

Good idea. I hadn't thought of that route!!!!

 

[dieselcrawler]

6dogs, that would be an excellent source for exhaust tube... They offer a wide range of pre-bent elbows in many sizes.

However... Im doing this low-buck... Im using 1.5" scd 40 pipe and EMT conduit that I have on hand. This will kind of be a trial run, see it it works thing... If I like the results, and when it rusts out in a few years, I'll rebuilt it with actual exhaust pipe, which resists rust much better than the EMT. (I've used it before, on my truck muffler delete, lasted about 4 years) Im sure the scd 40 will last longer.

 

[ovrszd]

Your little tractor won't generate a LOT of heat. I think this will last a long time.

 

[RoyJackson]

Your little tractor won't generate a LOT of heat. I think this will last a long time.

No, it won't...Yanmar engines (I've had three Yanmar powered Deeres) do tend to run cool...great starting in cold weather though! I'd still recommend a block heater though..just easier on the engine.