BBK throttlebody spring tention
Thread Starter
Drifting
Joined: Dec 2001
Posts: 1,313
Likes: 1
From: providence ut
BBK throttlebody spring tention
I've got a BBK throttlebody and it takes a leadfoot to feather the clutch from a stop.......the spring pressure is way to high......anyway to lower it?
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Are you sure it's the spring, or are the blades sticking in the bores a bit at idle?
I have this problem with my stock TB, makes it a bitch to ease into the clutch, or to autocross it. Raising the idle set screw a bit can help, but there's only so far you can go without effing up the idle speed.
I have this problem with my stock TB, makes it a bitch to ease into the clutch, or to autocross it. Raising the idle set screw a bit can help, but there's only so far you can go without effing up the idle speed.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Don't turn it by hand, the throttle cable doesn't turn it, it pulls on it on one side. This cause the shaft to move rearward if there's any slop whatsoever. This is where mine sticks. Works great just pivoting by hand though. Also when the car is running, it's pulling vacuum and this can make it even worse.
Start the car and go under hood and pull on the throttle cable by hand in the manner the gas pedal does. This will tell you what you need to know. I've seen others mentions the BBK blades sticking, but no reports of issues with high spring tension.
On a second note, if it is spring tension, they should have double throttle springs in there, it's a safety feature. You could try removing one, but I'd recommend installing an external spring in is place to maintain that safety feature. All racetracks require double throttle springs, and for good reason.
Start the car and go under hood and pull on the throttle cable by hand in the manner the gas pedal does. This will tell you what you need to know. I've seen others mentions the BBK blades sticking, but no reports of issues with high spring tension.
On a second note, if it is spring tension, they should have double throttle springs in there, it's a safety feature. You could try removing one, but I'd recommend installing an external spring in is place to maintain that safety feature. All racetracks require double throttle springs, and for good reason.
