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Old 12-28-2012   #1
alwayscode390
 
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Exclamation Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

I was out installing the "LT5" throttle body plate I bought.

Started the car and it was leaking from one of the bolts.

I went to tighten the bolt a little more to make the leak stop , and the bolt BROKE!!!

Now its pouring fluid out of the bolt hole.

What are my options here? Thanks ---
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Old 12-28-2012   #2
alwayscode390
 
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

If I install a throttle body bypass ... and tap out the bolt , everything should be fine, right?

Is it bad to drive it 5 miles up the street to my mechanic while it leaks a little bit?

Is there a risk of the car catching on fire? ---
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Old 12-28-2012   #3
WVZR-1
 
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

Can you NOT remove the rest of the bolts, the plate and THEN get a grip on the broken to remove it? New plate didn't come with hardware?

Last edited by WVZR-1; 12-28-2012 at 03:17 PM.
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Old 12-28-2012   #4
alwayscode390
 
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

I got the rest of the bolts removed, reinstalled the stock plate ... and its leaking out of the bolt hole that is broken.

Its pretty deep in there, I cant get ahold of it.

The new plate did NOT come with hardware or a gasket ---
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Old 12-28-2012   #5
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

Why not do a TB bypass and not even worry about the coolant in the TB. Also coolant is not flammable.

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Old 12-28-2012   #6
Paul Workman
 
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

Drill out the broken bolt and install a Helicoil?
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Old 12-28-2012   #7
alwayscode390
 
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

I found an eyeglass screwdriver set which has REAL small flatheads in it. I may be able to get the broken top of the bolt with one of those.

I will try that before I go the helicoil route.

Who sells the TB bypass kits on our cars? I see Haibeck has one for $25 ... is that the ticket?

Ive installed atleast 3 of these plates without issues before ... but I noticed the corrosion on the bolts when I took them out. I should have gotten new bolts.

I read that antifreeze IS flammable, but at a high temperature ... just wanted to make sure it wouldn't catch fire from the engine block heat.

Thanks ---
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Old 12-28-2012   #8
WVZR-1
 
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

Quote:
Originally Posted by alwayscode390 View Post
I found an eyeglass screwdriver set which has REAL small flatheads in it. I may be able to get the broken top of the bolt with one of those.
Thanks ---
I'd guess those are 4.5mm bolts and maybe a 3mm or 1/8" center-punch, 3mm drill bit and extremely small extractor!

I'd be interested in the size and pitch of the screw!

Last edited by WVZR-1; 12-28-2012 at 05:02 PM.
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Old 12-28-2012   #9
alwayscode390
 
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Thumbs up Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

Quote:
Originally Posted by WVZR-1 View Post
Can you NOT remove the rest of the bolts, the plate and THEN get a grip on the broken to remove it? New plate didn't come with hardware?

Thanks so much for the idea ... I couldn't leave it alone so I went back outside ... took off the old plate ... pulled up the old gasket and WALLAH!!! Just enough thread was poking out that I could grab it with a small set of needle nose plyers.

I just reinstalled the new plate with stainless bolts that I had already. These should be a lot stronger, have stampings in the head.

YAY!!! I appreciate it guys ... still may do the bypass so I don't have to worry about any leaks in the future. ---

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Old 12-28-2012   #10
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Default Re: Installing Throttle Body Plate, Broke a Bolt, now it leaks ---

Quote:
Originally Posted by WVZR-1 View Post
I'd guess those are 4.5mm bolts and maybe a 3mm or 1/8" center-punch, 3mm drill bit and extremely small extractor!

I'd be interested in the size and pitch of the screw!
Dave,
According to Jerry's handy LT5 fastener spreadsheet they are 4mm x 0.70, 14 mm long, T20 torx
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