Many Racers Take Them Off to Save Weight:
Don't Remove Your Heat Shields....
Or You'll Lose 10 Horsepower !!
THE R6 HEAT SHIELD
Think of it as 10 Free Horsepower !
Most bikes have
something like this behind the radiator.
Those black plastic / rubber pieces keep excess heat from getting to the carburetors / fuel injectors. The Yamaha R6 uses 2 different ones. The one pictured above covers the triangular space between the steering head and the frame spars to block out radiator heat. The 2nd one is the rubber blanket that goes between the carbs and the engine to shield rising engine heat.
If you want your bike to be
Don't Remove Them !!!
The Heat Shield is Missing.
What are they for ?? Well, imagine sitting on a starting grid (or at a stoplight). What would happen if you put on the choke ? Bad idea right ?? …the engine will load up with fuel and run bad. The same thing happens when the heat shields are missing. As you wait on the grid, the float bowls heat up, the fuel vaporizes, and your fuel / air ratio becomes too rich. When its time to go, the bike will be noticeably slower.
Once you get
moving it only gets worse, because now hot air from the radiator is BLASTING
directly at your carburetor’s float bowls! Finding the correct jetting is impossible, since even if you set up the carburetors perfectly on a dyno, the
fuel air ratio will always be controlled by how much extra heat the carbs get.
Think of it as Reverse Ram Air
…the faster you go, the less power you’ll have.
Heat Shields are Cool !!