Broken intake bolt 93 5.0l

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Broken intake bolt 93 5.0l

Post  jasonf on June 1st 2016, 10:33 pm

Working on my 93 LX 5.0l. It has always used a little coolant so I finally decided to take the intake off and have a look. I broke the passenger rear bolt off. The other rear corner bolt was all carboned up but I managed to get it out. There is not enough sticking up to get vice grips on. I heated the bolt and soaked it with PB blaster several times. THen I welded a bolt on top but it still won't budge. I soaked it some more and I am going to let it set till morning. If it won't budge I was thinking of heating it up again. At some point I will probably have to drill it out but that is going to be a bugger against the firewall.

Does anyone have any better ideas?





While you are here... Is it normal to have this much oil in the port? I assume it is from the egr. The car has 92k miles. It doesn't smoke or use oil.



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Re: Broken intake bolt 93 5.0l

Post  FalconEh on June 1st 2016, 10:41 pm

You have the bolt welded already, try heating it with a torch and use a candle to hold against it, the wax will melt and run down the threads and act as a lubricant when it cools, I have done this many times on exhaust manifolds with success to the point I keep a candle in the tool box for this purpose. Wink
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Re: Broken intake bolt 93 5.0l

Post  crittersf1 on July 20th 2016, 10:48 am

Looks like you found where the coolant was going
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Re: Broken intake bolt 93 5.0l

Post  jasonf on July 20th 2016, 3:03 pm

I let it sit overnight and it came right out in the morning. The PBS Blaster worked it's magic.
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Re: Broken intake bolt 93 5.0l

Post  DILLIGASDAVE on July 21st 2016, 3:44 am

jasonf wrote:.......The PBS Blaster worked it's magic.

PB Blaster is some damn useful stuff. It surprised me how fast it will knock down corrosion on battery posts.
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Re: Broken intake bolt 93 5.0l

Post  maverick on July 22nd 2016, 5:37 pm

Glad it worked out for you. Cool

If any of you guys are looking for the best penetrating lube for jobs like this...try a 50/50 mix of acetone and ATF. Wink
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Re: Broken intake bolt 93 5.0l

Post  crittersf1 on September 15th 2016, 11:34 am

maverick wrote:Glad it worked out for you. Cool

If any of you guys are looking for the best penetrating lube for jobs like this...try a 50/50 mix of acetone and ATF. Wink
Use it all the time!
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Re: Broken intake bolt 93 5.0l

Post  rmcomprandy on September 15th 2016, 7:06 pm

crittersf1 wrote:
maverick wrote:Glad it worked out for you. Cool

If any of you guys are looking for the best penetrating lube for jobs like this...try a 50/50 mix of acetone and ATF. Wink
  Use it all the time!

I recently tried some stuff called "Kroil" with pine oil in it. Seems to work OK for loosening corroded bolt threads.

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Re: Broken intake bolt 93 5.0l

Post  jbozzelle on September 17th 2016, 11:06 am

I haven't been able to find Kroil for years. My dad had that stuff for years growing up and worked like a champ

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Re: Broken intake bolt 93 5.0l

Post  DFI429 on September 17th 2016, 12:32 pm

Lol.. my buddy's dad used to boast about Kroil 25 years ago.. we thought he was brewing it up in the basement pirat
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Re: Broken intake bolt 93 5.0l

Post  Wayne Pearce on September 18th 2016, 7:55 am

Hey, guy's - just did a little online search for "Kroil", it's available from Amazon as well as others. Amazon offers an 8 ounce can for 15.95 (best price I found in my brief search). So this miracle rust busting concoction is still available, hope that was helpful.

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Re: Broken intake bolt 93 5.0l

Post  tornado on September 18th 2016, 12:51 pm

I use it and keep it on hand.  Good stuff.  You can order it directly from the Kroil people too.

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Re: Broken intake bolt 93 5.0l

Post  res0rli9 on September 18th 2016, 3:10 pm

I've been using Kroil on my guns for yrs.

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