Vmax4creed
VIP Member
Apex S/C grass sled going to be racing grass & cooling off with a cool down cart, on an Apex should the thermostat be removed completely or modify one to restrict flow & slow down rate of coolant flow? Anyone racing grass or asphalt?
- Joined
- Apr 14, 2003
- Messages
- 6,539
- Location
- Hessel, Michigan
- Country
- USA
- Snowmobile
- Sidewinder, SR Viper XTX, SR Viper XTX, 2016 Apex XTX and Pro-Line Pro Stock 1000
I have been racing Yamaha 4 strokes since they came out in 2003. RX1's, Apex's, Nytro's, Viper and now Winders.
If you plan on driving the sled up to the lanes and driving back to the pits, I recommend modifying the thermostat. Take the thermostat out, cut the 2 pieces that hold the spring and remove the inner mechanicals leaving the round metal and rubber ring to put back in. This is of course better when using a cool down.
Most asphalt racers are using fans to cool down the engine now between runs and not removing the thermostat. A 4 wheeler brings us up and pulls us back so we keep the temps down as it gets hard to cool down when running rounds. Make the 4 wheeler work, but also need someone to drive it.
If you plan on driving the sled up to the lanes and driving back to the pits, I recommend modifying the thermostat. Take the thermostat out, cut the 2 pieces that hold the spring and remove the inner mechanicals leaving the round metal and rubber ring to put back in. This is of course better when using a cool down.
Most asphalt racers are using fans to cool down the engine now between runs and not removing the thermostat. A 4 wheeler brings us up and pulls us back so we keep the temps down as it gets hard to cool down when running rounds. Make the 4 wheeler work, but also need someone to drive it.
Vmax4creed
VIP Member
Awesome thanks NOS-PRO for the reply, i will modify the thermostat.
