LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

"Darn" head stud is leaking coolant. I'm livid.

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Old Nov 21, 2004 | 09:19 PM
  #31  
chevyguy3's Avatar
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Re: "Darn" head stud is leaking coolant. I'm livid.

no problems, just need to clean the threads in the block before putting the studs back in next time, but you should tap the head bolt threads everytime the heads are off anyways.
Old Nov 21, 2004 | 09:20 PM
  #32  
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Re: "Darn" head stud is leaking coolant. I'm livid.

"Thread chaser" the same thing? Or an actual tap...
Old Nov 21, 2004 | 09:21 PM
  #33  
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Re: "Darn" head stud is leaking coolant. I'm livid.

thread chaser is the right thing to use
Old Nov 21, 2004 | 09:21 PM
  #34  
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Re: "Darn" head stud is leaking coolant. I'm livid.

Originally Posted by 97 RedSS
Then why would if come in cars straight from the factory if it did that???
because it only has to last 3 years or 50K miles. and i can think of none of them that came with a blower, turbo or nitrous. im just giving dave a heads up because he is a buddy of mine. what usually happens is on older cars where the HG are weakend from the dexcool, when you run a poweradder on them the HGs tend to blow.

Last edited by 93turbo5oh; Nov 21, 2004 at 09:25 PM.
Old Nov 21, 2004 | 09:33 PM
  #35  
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Re: "Darn" head stud is leaking coolant. I'm livid.

On another note, come to think of it...the only reason the passenger side may have oil in it is because that's where the fill cap is. :duh: So, I can't confirm if that's oiled due to getting oil, or from being where the oil fill cap is.
Old Nov 21, 2004 | 09:34 PM
  #36  
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Re: "Darn" head stud is leaking coolant. I'm livid.

that would make a lot more sense

what is your oil pressure reading?
Old Nov 21, 2004 | 09:35 PM
  #37  
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Re: "Darn" head stud is leaking coolant. I'm livid.

I don't know how accurate the stock gauges are, but it shows 70-75 PSI at idle.
Old Nov 21, 2004 | 09:37 PM
  #38  
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Re: "Darn" head stud is leaking coolant. I'm livid.

Here check this vid out:
http://paradox.shacknet.nu/dave88lx/...tall/runs4.mpg
Old Nov 21, 2004 | 09:42 PM
  #39  
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Re: "Darn" head stud is leaking coolant. I'm livid.

pull the intake, see if oil is getting to the lifters and cam lobes
Old Nov 21, 2004 | 09:48 PM
  #40  
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Re: "Darn" head stud is leaking coolant. I'm livid.

looking at the video, i would say something is clogged up or blocked off in the oiling system. the pressure shouldnt be that high at 500rpm, and also noticed it is holding some pressure when the engine isnt running
Old Nov 21, 2004 | 10:00 PM
  #41  
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Re: "Darn" head stud is leaking coolant. I'm livid.

Just see if I've got oil sitting up there? Ugh. I'm thinking time has come to drop this engine back out.

I thought 80PSI was rather high at idle too.
Old Nov 21, 2004 | 10:05 PM
  #42  
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Re: "Darn" head stud is leaking coolant. I'm livid.

I have a long block 383 stroker right now on an engine stand. When I put the heads on I used arp head bolts, when I installed and torqued the bolts I used the arp assembly lube. Is that lube a sealer or do I need to pull the bolts out and re-seal them? If I have to re-seal them what should I use?
Old Nov 21, 2004 | 10:13 PM
  #43  
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Re: "Darn" head stud is leaking coolant. I'm livid.

Correct me if I'm wrong, but the assembly lube is just used under the bolt head (nuts with studs) to provide reduced friction to give a correct torque reading. The thread sealant still needs to go on the threads of the bolts themselves.

From what I've read on here, a couple good things to use is Permatex's high-temp thread sealant, or this stuff here: http://partimages.genpt.com/partimages/9770.jpg thta has teflon in it.

It seems ARP has a thread sealant too, dunno how good it is. But yes you need to seal your threads. Or else you'll be where I'm at.
Old Nov 21, 2004 | 10:18 PM
  #44  
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Re: "Darn" head stud is leaking coolant. I'm livid.

Thats correct, the moly lube ARP provides is for the nuts ONLY .. for proper torque readings. However, I usually use it on the threads up top too (i just glob it on) and its never had any adverse effects on my car.
Old Nov 21, 2004 | 10:46 PM
  #45  
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Re: "Darn" head stud is leaking coolant. I'm livid.

Good luck Dave, I hope everything works out.

Let us know what you use to fix it.
I have a new engine I'm trying to finish and I've been worrying about something going wrong. Takes the fun out of it



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