L3940 HSTC

[kuboman]

It has to have something to do with the way these things are set up, our L5740 is like everyone else s, but out L5030 didn't smoke nearly as much and started much smoother.

They are set up different now. The engine timing has been retarded for emissions. Retarding the timing effectively lowers combustion temps which lowers nitrous oxide levels. Bump the timing up and it gets rid of the annoying smoke on start up.

 

[TripleR]

They are set up different now. The engine timing has been retarded for emissions. Retarding the timing effectively lowers combustion temps which lowers nitrous oxide levels. Bump the timing up and it gets rid of the annoying smoke on start up.

My mechanical abilities do not extend beyond routine maintenance, but my brother's do and it's out at his shop right now getting a new seat; what would you recommend as a setting?

Thanks

 

[The Fred]

It's tricky to set. Manual shows in full detail changing shims around under the fuel rack. Time consuming unlike moving the distributor in the Chivvy tree-50. Those were the days.

Fred, still testing.

 

[TripleR]

It's tricky to set. Manual shows in full detail changing shims around under the fuel rack. Time consuming unlike moving the distributor in the Chivvy tree-50. Those were the days.

Fred, still testing.

Thanks, I will order a WSM for it. Yeah I remember the good old days and use to work on my own cars and trucks as well as help my brother, now all I can do is stare and scratch my head while he spends an hour or more just getting enough shrouds and such to actually get to the engine in a car.

 

[milkman]

All you hear is the freeeking hydro whining worse than me obsessing over the whiny hydro. You can only hear the turbo at idle or high idle.
The straight pipe is temporary. I like quiet and will get it right, I need a muffler of some type.

I put a vertical exhaust on my BX2200 and used an IH Cub muffler, way too loud so finally found a muffler for "97 Honda Civic that is small and quiet. 1.5" in and out so might be too small for yours.

 

[wmonroe]

<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=352622"/> I put a vertical exhaust on my BX2200 and used an IH Cub muffler, way too loud so finally found a muffler for "97 Honda Civic that is small and quiet. 1.5" in and out so might be too small for yours.

Very cool BX. Never seen front and rear dual on a scut, are they for stability or low ground compaction?

 

[Chilly807]

It has to have something to do with the way these things are set up, our L5740 is like everyone else s, but out L5030 didn't smoke nearly as much and started much smoother.

If mine smoked like that on startup, I wouldn't be able to keep it in an attached garage like I do now. Incomplete combustion in a cold engine is what causes grey smoke like that. Might be worth fiddling with timing a bit, my only concern is what effect it would have on the egr over long term. That's the trouble with tuning, is knowing what else was changed when something like an egr, dpf, or turbo was added to a given engine. Could be different pistons, cooling jets, cam duration and timing, valve material, fuel volume and timing... list goes on and on.
We've learned the hard way at work about inadvertently changing injection timing by changing injector nozzles and opening pressure at the suggestion of the OEM. When a V-16 twin turbo diesel breaks rods and spits pieces through the side of the block it gets interesting. We lost 6 engines, I think, before someone figured out what was happening. Turns out combustion was starting BEFORE tdc, not after.. very hard on an engine.
I doubt the engines we have in our tractors are that touchy, but still...

Sean

 

[TripleR]

If mine smoked like that on startup, I wouldn't be able to keep it in an attached garage like I do now. Incomplete combustion in a cold engine is what causes grey smoke like that. Might be worth fiddling with timing a bit, my only concern is what effect it would have on the egr over long term. That's the trouble with tuning, is knowing what else was changed when something like an egr, dpf, or turbo was added to a given engine. Could be different pistons, cooling jets, cam duration and timing, valve material, fuel volume and timing... list goes on and on.
We've learned the hard way at work about inadvertently changing injection timing by changing injector nozzles and opening pressure at the suggestion of the OEM. When a V-16 twin turbo diesel breaks rods and spits pieces through the side of the block it gets interesting. We lost 6 engines, I think, before someone figured out what was happening. Turns out combustion was starting BEFORE tdc, not after.. very hard on an engine.
I doubt the engines we have in our tractors are that touchy, but still...

Sean

Thanks for the heads up, my tractors live in barns and sheds, so maybe I need to leave it alone, I have a good relationship with our dealer's shop foreman, so I will run it by him before doing anything.

 

[Member]

Holy smoke.. literally. I remember seeing another GL starting, and it was similar I think, but it's been a while.

[...]

It may have been me:

L4240 White Smoke and Stumbling Idle on Cold Start - YouTube

It's still doing it, only in winter. Power Service doesn't help. If you figure it out I'd love to hear about it.

 

[milkman]

Very cool BX. Never seen front and rear dual on a scut, are they for stability or low ground compaction?

Getting wood on my hillsides.