Hi,
I know there have been threads in the past that talk about lowing the overall RPM's of the 825i Gator, and how to lower the exhaust noise level. I have recently done both and thought I would share my information. I have Kanati Mongrel 28" tires installed.
Exhaust noise:
I purchased a Silent Rider brand muffler for the 825i. As advertised, it immediately lowered the exhaust noise. From idle to wide open, you no longer get that "raspy" exhaust note. You can actually hear your tires and engine's mechanical noise at cruising speed (20 mph). I believe it gives a little more torque down low, but gives up a little top end punch.
Lowering the primary clutch engagement RPM:
I purchased the weights from a 2013 855D primary clutch (AM140452 $5), and the Team Industries 30-810005 primary spring ($25). This spring is red with a purple stripe (55/155 lbs). The diesel weights will need to be shortened 1/4" to fit into the 825i clutch basket. These weights are hardened to the 1/4" stock removal will need to be removed with a mill or cut off wheel.
Results:
Clutch starts engaging at 1400 rpm.
2000 rpm = 5 mph
2500 rpm = 9 mph
3000 rpm = 17 mph
3500 rpm = 25 mph
4000 rpm = 29 mph
I do not have a straight and flat enough area to test over 4000 rpm. Low end towing power is great. I hope this helps everyone.
Attachment 483
I know there have been threads in the past that talk about lowing the overall RPM's of the 825i Gator, and how to lower the exhaust noise level. I have recently done both and thought I would share my information. I have Kanati Mongrel 28" tires installed.
Exhaust noise:
I purchased a Silent Rider brand muffler for the 825i. As advertised, it immediately lowered the exhaust noise. From idle to wide open, you no longer get that "raspy" exhaust note. You can actually hear your tires and engine's mechanical noise at cruising speed (20 mph). I believe it gives a little more torque down low, but gives up a little top end punch.
Lowering the primary clutch engagement RPM:
I purchased the weights from a 2013 855D primary clutch (AM140452 $5), and the Team Industries 30-810005 primary spring ($25). This spring is red with a purple stripe (55/155 lbs). The diesel weights will need to be shortened 1/4" to fit into the 825i clutch basket. These weights are hardened to the 1/4" stock removal will need to be removed with a mill or cut off wheel.
Results:
Clutch starts engaging at 1400 rpm.
2000 rpm = 5 mph
2500 rpm = 9 mph
3000 rpm = 17 mph
3500 rpm = 25 mph
4000 rpm = 29 mph
I do not have a straight and flat enough area to test over 4000 rpm. Low end towing power is great. I hope this helps everyone.
Attachment 483