MossRoad
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- Aug 31, 2001
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- 57,474
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- South Bend, Indiana (near)
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- Power Trac PT425 2001 Model Year
I'm fairly certain I'd damage that muffler outside the machine like that in no time.
Anyone with the new 425...
- Thread starter marrt
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joshlee
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- Beaver Springs, PA
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- Power Trac PT1430 Year made 2016
I see in the top picture that it has a in-line fuel shut off valve. It used to be that you had to put that valve in yourself, it did not come with the machine.
MossRoad
Super Moderator
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- Aug 31, 2001
- Messages
- 57,474
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- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
Yeah, I put one on mine, too.
ernemats
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- Bolivar, pa.
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- power trac 422, and agco-allis 5660, ,1845 power trac Greenworks CRT 426
I put one on mine also but seldom use it.
cqaigy2
Super Member
I put one on my Robin's after i flooded the crankcase with gas, and kept it with the re-engined kohler.
agjones
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- Rk55HC, Kubota kx040, power-trac 425d, Bobcat L23, Yanmar 401w, bx1880, IHI 30 and Fiori D40 dumpers, Magnatrac mh5000, Dew-eze ATM72LC Slope Mower, Terramite t6 4wd, DR Power brush mower
I had to get rid of the stock muffler for several reasons. Prime among them, no spark arrestor = no federal land work. And there was no way to add a spark arrestor when the double 90 design turned the whole muffler into a glowing ignition device!
OP
marrt
Platinum Member
Mossroad, thank you for posting the pictures.
+ I like the "Mossroad design," with the exhaust out the back much better.
+ I suspect this current design is used to save money (no front AND rear power take off) and to shift the center of gravity more toward the back.
+ The downside...a HUGE heat generator in the middle of the tub and right beside the battery. Battery's don't like excessive heat.
+ Even though the battery is easy to access (for infrequently changes), the hydraulic filter is hard to access (even though this filter is changed frequently).
+ I don't like a plastic gas tank. Doesn't seem as safe as a metal tank.
To me, the biggest problem is the muffler location. Cooling air flowing across the cylinders is combined with a hot muffler and then "forced" to turn 90 degrees in a small space to escape. This can't be an efficient design from an air flow perspective.
+ I like the "Mossroad design," with the exhaust out the back much better.
+ I suspect this current design is used to save money (no front AND rear power take off) and to shift the center of gravity more toward the back.
+ The downside...a HUGE heat generator in the middle of the tub and right beside the battery. Battery's don't like excessive heat.
+ Even though the battery is easy to access (for infrequently changes), the hydraulic filter is hard to access (even though this filter is changed frequently).
+ I don't like a plastic gas tank. Doesn't seem as safe as a metal tank.
To me, the biggest problem is the muffler location. Cooling air flowing across the cylinders is combined with a hot muffler and then "forced" to turn 90 degrees in a small space to escape. This can't be an efficient design from an air flow perspective.
MossRoad
Super Moderator
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- Aug 31, 2001
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- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
Agreed.
MossRoad
Super Moderator
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- Aug 31, 2001
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- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
If mine had a metal fuel tank and a better location for the battery, I'd be 100% happy. I've had to replace the battery 3 times in 18 years. Last time I broke an exhaust manifold bolt and that was aggravating. Got it out without too much problem (welded nut to the broken stud and removed easy), but still an aggravation.
OP
marrt
Platinum Member
On my 435 (still need to post some pictures), I cut the rear of the tub out, like to older PT's. I then fabricated a weldment that bolts on for rigidity. This allows much better access to the interior of the tub for maintenance. These days, you can buy a 50 amp plasma cutter on Amazon for $200, which is unbelievable. Makes doing this type of work painless.
