THE VE PUMP AND YOU.......
#1
02-04-2008, 12:07 AM
THE VE PUMP AND YOU.......
I GOT BORED TONITE.....
IF YOU TURN THE PUMP UP TOO MUCH YOU MAY EXPERIENCE WHAT WE CALL RUN-AWAY, THAT IS WHEN YOU ADD SO MUCH FUEL THE MOTOR BEGINS TO CLIMB IN RPM'S SO FAST YOU CANT SHUT IT OFF EXCEPT TO KILL THE AIR TO THE ENGINE, SO HAVE A PIECE OF WOOD BIGGER THAN THE INDUCER (2X6 10 INCHES LONG) ON THE TURBO AND HAVE A FRIEND HOLD IT NEAR THE INDUCER IN CASE THE ENGINE RUNS AWAY, HE PLACES THE BOARD OVER THE INDUCER AND STOPS THE AIR FROM FLOWING AND KILLS THE ENGINE BEFORE IT CAN OVER REV AND BLOW UP..........NEVER, EVER, UNDER ANY CIRCUMSTANCES TRY AND USE YOUR HAND........THE TURBO WILL REMOVE YOUR FINGERS.........
What is a runaway?
A runaway can occur while turning up the fuel on the VE injection pump, the reason they run away is that the control collar can't move far enough towards the "defuel" end of the plunger (making the spill port area smaller), and the backpressure in the spill port becomes high enough that engine speed goes out of control. This is why they will idle OK but then hang at high RPM. At low RPM there's not enough backpressure to start the runaway.
How do u prevent a runaway?
With this procedure you can help prevent a runaway better then the old method of slow increments.
With every 1/2 turn of the fuel screw, snap the throttle. IF the throttle hangs in the upper RPM's before coming back down your on the edge of runaway, or if it will not comeback down to its prior RPM, back your fuel screw back out at least 1/2 turn.
How do u stop a runaway?
Remove an intake somewhere on the engine, if your doing this by yourself, open the intake on the driver side of the engine, if 2 people, remove the intake at the turbo and give your sidekick the board to cover the inlet into the turbo. What your doing is choking the engine should the runaway occur. This will the engine down.
You need to keep a sturdy board handy while your turning up the power, after all u dont want plywood sucked into your motor at 6000 RPM's do ya?
This is runaway, and thats how u can try to prevent it, and stop it. Still want to turn up the power??
IF YOU TURN THE PUMP UP TOO MUCH YOU MAY EXPERIENCE WHAT WE CALL RUN-AWAY, THAT IS WHEN YOU ADD SO MUCH FUEL THE MOTOR BEGINS TO CLIMB IN RPM'S SO FAST YOU CANT SHUT IT OFF EXCEPT TO KILL THE AIR TO THE ENGINE, SO HAVE A PIECE OF WOOD BIGGER THAN THE INDUCER (2X6 10 INCHES LONG) ON THE TURBO AND HAVE A FRIEND HOLD IT NEAR THE INDUCER IN CASE THE ENGINE RUNS AWAY, HE PLACES THE BOARD OVER THE INDUCER AND STOPS THE AIR FROM FLOWING AND KILLS THE ENGINE BEFORE IT CAN OVER REV AND BLOW UP..........NEVER, EVER, UNDER ANY CIRCUMSTANCES TRY AND USE YOUR HAND........THE TURBO WILL REMOVE YOUR FINGERS.........
What is a runaway?
A runaway can occur while turning up the fuel on the VE injection pump, the reason they run away is that the control collar can't move far enough towards the "defuel" end of the plunger (making the spill port area smaller), and the backpressure in the spill port becomes high enough that engine speed goes out of control. This is why they will idle OK but then hang at high RPM. At low RPM there's not enough backpressure to start the runaway.
How do u prevent a runaway?
With this procedure you can help prevent a runaway better then the old method of slow increments.
With every 1/2 turn of the fuel screw, snap the throttle. IF the throttle hangs in the upper RPM's before coming back down your on the edge of runaway, or if it will not comeback down to its prior RPM, back your fuel screw back out at least 1/2 turn.
How do u stop a runaway?
Remove an intake somewhere on the engine, if your doing this by yourself, open the intake on the driver side of the engine, if 2 people, remove the intake at the turbo and give your sidekick the board to cover the inlet into the turbo. What your doing is choking the engine should the runaway occur. This will the engine down.
You need to keep a sturdy board handy while your turning up the power, after all u dont want plywood sucked into your motor at 6000 RPM's do ya?
This is runaway, and thats how u can try to prevent it, and stop it. Still want to turn up the power??
Last edited by RSWORDS; 06-12-2009 at 08:45 AM.
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