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> Seized engine sheet metal screws, Better ask before I break out the drill
MrHyde
post Sep 27 2011, 04:24 PM
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So.... in order to get a bit more room in the garage after the move, so I can start welding on the body i figured I'd work on getting the engine up on a stand an off to the side for a little bit... I have the tranny off and wires/FI stripped off and boxed up and have been taking the sheet metal screws off.. I have 4 that are totally seized on... 3 of them at the intake ports and one on the fan shroud.. I've soaked them with pb blaster and all i've managed to do it mangle the slot in the screw a bit..
I'm inclined to just drill out the screws and tap them afterwards...

Before I do this, does anyone have any time tested suggestions to get these buggers off?? If not, does anyone know off hand what size the tap / drill I'll need to use ?

Thanks !
Mike
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VaccaRabite
post Sep 27 2011, 04:29 PM
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if you have an impact driver you could try tapping them with it. Don't wail on them though. or use a torch and heat them up.

Don't drill them out. If you mess up you could hurt the case.

Zach
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nathansnathan
post Sep 27 2011, 04:32 PM
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I would try grabbing the head with vise grips before I tried drilling them out. I've loosened stuck tin screws with a propane torch, too. If you do have to drill and tap they are 6mmx1.0.
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Jeffs9146
post Sep 27 2011, 04:33 PM
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I had the same problem and after 3 days of PB I heated them with a torch and used a pair of Vice Grip Plyers and the screw driver at the same time using the wrench more than the screw driver!

3 came out no problem but one broke off in the head. I gave the heads away any way so I never looked at them again!

So try the torch heat and vice grip method and take your time letting the PB soak in!
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tradisrad
post Sep 27 2011, 04:37 PM
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A big screw driver that does not slip/strip out always helps. Bolt extractor set may be helpful.
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Eric_Shea
post Sep 27 2011, 04:42 PM
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MAPP Torch.
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MrHyde
post Sep 27 2011, 04:51 PM
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I just sprayed them (again ) with PB Blaster.. I'll let them soak another night and get some oxygen for my maap torch tomorrow... thanks for the ideas
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wingnut86
post Sep 27 2011, 05:54 PM
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I love PB, it runs through my veins nowadays (IMG:style_emoticons/default/aktion035.gif)

Mapp for sure...
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bigkensteele
post Sep 27 2011, 05:55 PM
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I just went through this a couple of weeks ago. I found that using a QUALITY screwdriver and a wrench on the screwdriver for torque made them much easier to remove. On the ones that were mangled, I was able to use vice grips of various sizes/styles to get them out. I did not have to resort to heat, but that would have been my next option. The last thing that I would want to do is retap them.

Hopefully, I will be putting it all back together this weekend. There will be anti-sieze on the shiny new ones.
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r_towle
post Sep 27 2011, 06:11 PM
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Impact screw driver was invented to take out slotted cheese head screws from VW engines.
Get one.

http://www.harborfreight.com/impact-screwd...case-37530.html

Rich
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Dave_Darling
post Sep 27 2011, 09:56 PM
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I found that having the actual correct size of screwdriver made a huge difference. The largest size flat-head screwdriver that my local Sears carried was the correct size. It's a big mother, and it fits the screws very well. Lean on that and twist it, and they pop loose right away!

--DD
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majkos
post Sep 27 2011, 10:10 PM
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QUOTE(Dave_Darling @ Sep 27 2011, 07:56 PM) *

I found that having the actual correct size of screwdriver made a huge difference. The largest size flat-head screwdriver that my local Sears carried was the correct size. It's a big mother, and it fits the screws very well. Lean on that and twist it, and they pop loose right away!

--DD

(IMG:style_emoticons/default/agree.gif) Mapp is very good too.
One extra step to really break the hold? Ice
right after mapp torch heat treatment,ice.
Please use sound judgement,there will be snap,crackle and pop,
and we're not talking about melting ice, (IMG:style_emoticons/default/biggrin.gif)

I don't even want to think about drilling,sucess rate, low
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TheCabinetmaker
post Sep 28 2011, 04:53 AM
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I'm another for the impact. If you dont have one, your toolbox is incomplete.
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Gint
post Sep 28 2011, 05:45 AM
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Last time I removed tin, and impact screwdriver got every one of them out. No PB Blaster, no torch, no fuss, no muss. Just out and done.
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larss
post Sep 28 2011, 07:41 AM
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Had the same problem some weeks ago, a heat gun worked fine for me.


/Lars S
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sean_v8_914
post Sep 28 2011, 07:53 AM
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most of the advice above is solid. patience is the key. proper size driver, soak w PB.
...and what Curt said
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dlestep
post Sep 28 2011, 08:33 AM
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...I have a special tool just for that. A B I G fucking screwdriver. I press down with my hand at the top as I slowly twist, and a wooden flat (to keep it from slipping off the screwhead). Sometimes I may need a pair of plyers to grip the square screwdriver shaft as I turn on the stubborn ones. Haven't had one I couldn't remove. Hate those bastards with their stupid single slot. I replace them with real fasteners.
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mikea100
post Sep 28 2011, 08:50 AM
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I had the same problem. It took 2 people, my buddy was using vise grips and I was using screw driver at the same time.
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sean_v8_914
post Sep 28 2011, 09:04 AM
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teamwork! love it
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GeorgeRud
post Sep 28 2011, 11:13 AM
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I've also had better luck using Kroil as a penetranting liquid. Give it time to work overnight, then heat and patience are your friends.

Anti seize when reassembling is also a nice touch to make the next repair easier.
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