is this correct or B.S.
03-24-2006, 12:04 PM
#11
5th Gear Member
Join Date: Jul 2004
Location: Pittsburgh/Dayton
Posts: 3,062
RE: is this correct or B.S.
I see this crap over and over. People bring it up and start to believe it. I've seen dyno charts over and over... and the LT's make MUCH more power. The only thing is it loses 2-3 hp under 3000 rpms (where you shouldnt be racing in the first place).
03-24-2006, 12:41 PM
#14
RE: is this correct or B.S.
ORIGINAL: Chopper
Every dyno chart I have ever seen shows that long tubes outperform shorties by 15-20 HP.Stock engines also show similar gains.
Shorties are no easier to install than long tubes or mid-lengths.
Backpressure is a hinderance to performance at all levels.What most people refer to as backpressure are actually reversion waves.
Every material has mass.This is true for exhaust gas as well.Exhaust gas that has mass also has inertia whether it's sitting still or shooting out the exhaust.The exhaust gas will continue to shoot out the exhaust untill it either hits something or gets to the end of the pipe.When it hits something whether it's a bend in the system or an O2 sensor it causes part of the flow to be sent back toward the cylinder.This is a reversion wave.They can be used to pull part of the unburned mixture out of the cylinder into the exhaust,making room for more fuel air mix.When the wave comes back toward the cylinder and the valve is still open,the fuel air mix that was in the header tube will be forced back into the cylinder,sort of supercharging the engine.This improves volumetric efficiency of the engine and has a marked effect on power.Anyone who has ridden a two stroke dirt bike has felt the extra performance of reversion wave tuning.
Every dyno chart I have ever seen shows that long tubes outperform shorties by 15-20 HP.Stock engines also show similar gains.
Shorties are no easier to install than long tubes or mid-lengths.
Backpressure is a hinderance to performance at all levels.What most people refer to as backpressure are actually reversion waves.
Every material has mass.This is true for exhaust gas as well.Exhaust gas that has mass also has inertia whether it's sitting still or shooting out the exhaust.The exhaust gas will continue to shoot out the exhaust untill it either hits something or gets to the end of the pipe.When it hits something whether it's a bend in the system or an O2 sensor it causes part of the flow to be sent back toward the cylinder.This is a reversion wave.They can be used to pull part of the unburned mixture out of the cylinder into the exhaust,making room for more fuel air mix.When the wave comes back toward the cylinder and the valve is still open,the fuel air mix that was in the header tube will be forced back into the cylinder,sort of supercharging the engine.This improves volumetric efficiency of the engine and has a marked effect on power.Anyone who has ridden a two stroke dirt bike has felt the extra performance of reversion wave tuning.
03-24-2006, 01:58 PM
#18
6th Gear Member
Join Date: Sep 2005
Location:
Posts: 5,128
RE: is this correct or B.S.
what I've always understood is regular oil, change the dang oil every 3000 miles or 3 months, and if you run synthetic it's like 5000 miles but still 3 months
Just don't let your engine run for 20k miles and then realize you needed an oil change after the engine blows.... saw a mustang that had that done to it at my work... made me sad
George
Just don't let your engine run for 20k miles and then realize you needed an oil change after the engine blows.... saw a mustang that had that done to it at my work... made me sad
George
03-24-2006, 02:31 PM
#19
3rd Gear Member
Join Date: Feb 2005
Location:
Posts: 724
RE: is this correct or B.S.
+1... How can people not change their oil, i mean thats like one of the single most important things you do for your car.
ORIGINAL: monkeydude3
what I've always understood is regular oil, change the dang oil every 3000 miles or 3 months, and if you run synthetic it's like 5000 miles but still 3 months
Just don't let your engine run for 20k miles and then realize you needed an oil change after the engine blows.... saw a mustang that had that done to it at my work... made me sad
George
what I've always understood is regular oil, change the dang oil every 3000 miles or 3 months, and if you run synthetic it's like 5000 miles but still 3 months
Just don't let your engine run for 20k miles and then realize you needed an oil change after the engine blows.... saw a mustang that had that done to it at my work... made me sad
George
