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Throttle body not opening all the way?

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Old Mar 13, 2011 | 03:04 AM
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Default Throttle body not opening all the way?

I had my girl sit in my car and floor it when I was lookin at my throttle body and I noticed the butterfly opened like 75%??? Is it susposssed to open to the little metal peace???? Or is it supposed to open 75%???? For sure it's not opening all the way??? Pls help Thanks
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Old Mar 13, 2011 | 03:39 AM
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thats how the throttlebody is built..alot of guys and aftermarket manufacturers grind about an eight of an inch (where that metal part is that stops the assembly) down so the t/b can open 100%
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Old Mar 13, 2011 | 04:34 AM
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bought a PP TB that had that mod done to it
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Old Mar 13, 2011 | 04:40 AM
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What I'm sayin is my throttle doesn't even touch that little stopper it's basically full throttle with and half an inch left to really be full throttle and touch that stopper
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Old Mar 13, 2011 | 08:51 AM
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^ Yeah, it should touch the "stopper." If you rock the TB open all the way, look where it hits, or should.

You can kind of see it here.
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Old Mar 13, 2011 | 09:29 AM
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Your TB when closed should rotate up 90 deg. to be @ 100% open.
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Old Mar 13, 2011 | 09:36 AM
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mine did the same thing till i ground off that nub. before the grind, EFI Live said it only opened up 75% and after it was 98%
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Old Mar 13, 2011 | 09:57 AM
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Adjust your throttle cable until it is actually hitting the stop. There is an adjustment in the middle of the cable between the TB and the firewall.
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Old Mar 13, 2011 | 10:36 AM
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Bump Stop delete is what ya need to do
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Old Mar 13, 2011 | 11:01 AM
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Originally Posted by DaveX
Adjust your throttle cable until it is actually hitting the stop. There is an adjustment in the middle of the cable between the TB and the firewall.
Do this.


Ignore the fools telling you to mess with the throttle stop.
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Old Mar 13, 2011 | 11:09 AM
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agree adjust throttle cable its very easy
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Old Mar 13, 2011 | 01:00 PM
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does grinding that off help alot or is it even worth it?
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Old Mar 13, 2011 | 01:17 PM
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Originally Posted by Marc 85Z28
Do this.


Ignore the fools telling you to mess with the throttle stop.
Fools huh....so the bump stop mod is a waste of time there champ?
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Old Mar 13, 2011 | 03:26 PM
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Really when I ported mine I just grinded down the stop a lil and it was fine,fools I don't think so champ,there is a reason a lot have done this,agree can adjust the cable but when porting it takes like 2 seconds
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Old Mar 13, 2011 | 04:03 PM
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Lol so u guys are saying my car hasn't even had full throttle yet?
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Old Mar 13, 2011 | 05:08 PM
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Originally Posted by Marc 85Z28
Do this.


Ignore the fools telling you to mess with the throttle stop.
Speaking of fools. Take a long hard look in the mirror and then punch yourself.

Originally Posted by LS1TAUTO
Lol so u guys are saying my car hasn't even had full throttle yet?
All OEM LS1 TB's only opened roughly 75% from the factory. Delete the bump stop delete like mentioned and you are good to go. Don't listen to that dipshit marc.
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Old Mar 13, 2011 | 05:14 PM
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Ya but my throttle Isn't even touching the stopper I would understand if it touched it but there's like 25% left to touch the stopper
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Old Mar 13, 2011 | 05:23 PM
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Originally Posted by *02WS6TURK*
Fools huh....so the bump stop mod is a waste of time there champ?
It would be a waste of time for him since his TB is currently not touching the bump stop with the pedal on the floor. How is grinding down the stop going to change anything if it isn't even touching it?

It sounds to me like the cable needs to be adjusted and then you can do the bump stop mod if you want to.
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Old Mar 13, 2011 | 05:34 PM
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From: Oregon Grown
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Originally Posted by DaveX
It would be a waste of time for him since his TB is currently not touching the bump stop with the pedal on the floor. How is grinding down the stop going to change anything if it isn't even touching it?

It sounds to me like the cable needs to be adjusted and then you can do the bump stop mod if you want to.
I failed to see that he had mentioned it didn't touch, so with that said the cable obviously needs to be addressed. You guys act like doing the bump stop mod is radical or something...lmao
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Old Mar 13, 2011 | 05:40 PM
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and if he even still wants 100% throttle he will need to grind that bumpstop down after he adresses his cable slack.
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