home ported throttle body = hole in header
11-09-2004, 10:08 AM
#1
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home ported throttle body = hole in header Hey guys, a buddie of mine has a head & cam car and a friend of ours ported his throtttle body. Well he was riding around yesterday and heard a loud noise under the hood. He thought it was a broken valve spring, he has the PP golds.His cam is a g5x3 so he calls up Patriot Performance and guess what they tell him. With that big of a cam he will KEEP breaking them!
Those were rated at 650 lift right? Well come to find out it wasnt a valve spring which is good because patriot sounded like they were trying to get out of giving him a new spring. He was looking around and found a hole in the first header tube on the drivers side about the size of a quarter. After making a few phone calls he was told his motor was way to lean because of his throttle body was ported wrong. So guys be careful if you home port yours!
Those were rated at 650 lift right? Well come to find out it wasnt a valve spring which is good because patriot sounded like they were trying to get out of giving him a new spring. He was looking around and found a hole in the first header tube on the drivers side about the size of a quarter. After making a few phone calls he was told his motor was way to lean because of his throttle body was ported wrong. So guys be careful if you home port yours! 
11-09-2004, 10:27 AM
#2
Let me start by saying that even the worst ported throttle body can in no way cause you to run that lean. Even if it did, it wouldn't cause you to blow a hole in the headers man. Don't know who you've been talking to but they were smokin' some good ****.
Those springs are fine for that cam. But they probably won't last more than 20k-30k miles at best.
Sounds like the AIR fitting that is welded to the header tube just broke off.
Those springs are fine for that cam. But they probably won't last more than 20k-30k miles at best.
Sounds like the AIR fitting that is welded to the header tube just broke off.
11-09-2004, 10:48 AM
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I dont see how in the hell a Ported throttle Body no matter How much it was ported could ever Flow enough to create the car to lean out, to the point where it even mattered.
im gonna say problem has nothing to do with the throttle body.
im gonna say problem has nothing to do with the throttle body.
11-09-2004, 10:58 AM
#6
that's 100% BS.....unless there is a path for air to get AROUND the MAF (a leak), the MAF will pickup the increased flow and will add fuel.......
a) Hooker has had A LOT of people's AIR tubes brake off like that.....
b) if it really is lean the guy the tuned it didn't tune the car right and is trying to cover his ***.....
a) Hooker has had A LOT of people's AIR tubes brake off like that.....
b) if it really is lean the guy the tuned it didn't tune the car right and is trying to cover his ***.....
11-09-2004, 11:23 AM
#7
Its pretty hard to believe that both of these people would come up with the same complete and outright lie. A throttle body does not dictate the a:f in any way. Its like saying your shifter clogged your air filter. Like others already said, it was proably the air or EGR fitting that broke off.
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11-09-2004, 11:30 AM
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I agree, I have been around this stuff since I was 14 and if its anyones fault on running lean its the guy that tuned it to a point. If all he did was port the TB after the tune was done it was too lean to begin with.
11-09-2004, 11:36 AM
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so basically what i'm expected to believe is if i put a bbk throtle body on my car after my tune i'm gunna run so lean i'm gunna melt headers?? i don't think so.. can some one raise the B.S. flag here
11-09-2004, 12:34 PM
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I port tb's(not just my own), and even when they're opened up nice and wide, they can't flow enough to lean up a car. Your tuner is covering his ***, so is Hooker. Those AIR fittings have snapped off a couple times for numerous different people. Your buddy just needs to get Hooker to replace that or have someone weld that up for him.
11-09-2004, 01:16 PM
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well ill tell you guys what, call hooker headers and tell them that. thats what they told him. i told him i didnt think so either but after he called the guy that tuned it (Jeff at carolina auto masters) told him the throttle body was the problem. the hole is on the first tube on the drivers side near the head.i dont know what caused it but two people told him the same thing. the guy at hooker told him it has happened before. maybe they are trying to cover their ***.
11-09-2004, 01:19 PM
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Yeah umm that is right where the riser tube is. They are being dumbasses. Just have the hole welded up. That is what i did. Unless you need the AIR connection which apparently he is not using.
11-09-2004, 01:21 PM
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No matter how big you make the through-hole,
if it's drawing it all through the MAF there is no
mixture error (aside from what's tuned in or comes
from the sensors). Only a side-leak (PCV, IAC,
shaft) can contribute unmetered air into the TB.
And given the gross size differences that is going
to be a nit, at wide open or even half throttle.
More likely is dumb construction (butt welded tube
to tube on thin-wall mild steel, temp-cycled all to
hell daily) that is born to fail. Even -if- there were
no exhaust gas oxygen, to chew on the mild steel
at yellow heat.
if it's drawing it all through the MAF there is no
mixture error (aside from what's tuned in or comes
from the sensors). Only a side-leak (PCV, IAC,
shaft) can contribute unmetered air into the TB.
And given the gross size differences that is going
to be a nit, at wide open or even half throttle.
More likely is dumb construction (butt welded tube
to tube on thin-wall mild steel, temp-cycled all to
hell daily) that is born to fail. Even -if- there were
no exhaust gas oxygen, to chew on the mild steel
at yellow heat.
11-09-2004, 01:23 PM
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He found a shop that will weld it up. I hope it didnt mess anything else up. They told him to check and see if the piston was messed up, so we will see.
11-09-2004, 01:24 PM
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Originally Posted by cyphur_traq
I port tb's(not just my own), and even when they're opened up nice and wide, they can't flow enough to lean up a car. Your tuner is covering his ***, so is Hooker. Those AIR fittings have snapped off a couple times for numerous different people. Your buddy just needs to get Hooker to replace that or have someone weld that up for him.
booster hose off.This is going off the deep end ....has your car been tuned? If not headers typically make ls1 cars run rich.And to add to the post you would have to have a consistant ltft of above 30 positive!!!!!
11-09-2004, 01:26 PM
#19
Originally Posted by silverbeast
well ill tell you guys what, call hooker headers and tell them that. thats what they told him. i told him i didnt think so either but after he called the guy that tuned it (Jeff at carolina auto masters) told him the throttle body was the problem. the hole is on the first tube on the drivers side near the head.i dont know what caused it but two people told him the same thing. the guy at hooker told him it has happened before. maybe they are trying to cover their ***.
-T
Last edited by GuitsBoy; 11-09-2004 at 01:33 PM.
11-09-2004, 01:31 PM
#20
Originally Posted by silverbeast
They told him to check and see if the piston was messed up, so we will see.
The easiest and cheapest fix for him is simply to find a place that will weld it up while its still on the car. Hopefully, theyll weld it up correctly and he wont have to worry about the crappy factory welds failing again. He's on the right track.