Please Help... i need advise!

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KONA77

New member
go online and go to Northern Tool,  not the highest quality....  but better than Harbor Frieght....  if i needed something they would be my first start....    but let me say this,  drilling something out that small any drill bit is going to snap,  need a variable drill and drill at the slowest speed possible,  and with using a hand drill.... most guaranteed to break a bit.... MOST GO SLOW AND TRUE....  GOOD LUCK
 
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NescherMonty17

New member
i spoke with another machine shop... and he said to try a carbide bit to eat the titanium bit.  and said he would charge 160 bucks to take the screw out.  uuugh... i hate this boat, i want my chris craft back.... lol
 
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outlawjet

New member
Get a good carbide bit, Lowes carries Erwin easy outs, there is a set of five, drill it slowly with a varable speed drill, oil liberally the put in your easy out and back it out.
 
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outlawjet

New member
take your time, use plenty of oil, and don't put the bit in a bind, carbide bits are very hard, but they are also brittle, they dont like to be in a bind, and if you break it off...whell you know your screwed arter that, just go slow, and don't rush it
 
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ChryslerJet

New member
mrgoslow said:
sorry i didnt c sooner. after the first bit broke, you should have set a nut over the top and welded the bolt to the nut. its tricky but can be done. good luck. ps insure it before you go "boating" :smile30:
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I would have done this first.  This is usually my first attempt now since it is so much easier only time it doesn't work is if the bolt broke of down in the hole. 

In your current situation you can use a hand drill but it will take a long time going slow and with light pressure do not press down hard let the bit do the work of slowly cutting.  If you press you chance it binding and breaking off then your screwed.  Or you chance putting a bend in it which leads to breaking. 

If it were me at this point I would use a set of aluminum covers which are stiffer and a ton of silicone in that area and not worry about a boat for now until you get a chance to save the money to pull it and get it fixed right by the machine shop or out of the boat yourself working at an angle on the boat is never easy to do.

Just my 2 cents
 
Patchman

Patchman

Administrator
Staff member
mrgoslow said:
sorry i didnt c sooner. after the first bit broke, you should have set a nut over the top and welded the bolt to the nut. its tricky but can be done. good luck. ps insure it before you go "boating" :smile30:
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This is the way to do it! Find you someone with a mig welder. Done it many times myself. Oh and the left hand drill bits are usually on the tool trucks! Snap-on, Mac and so on. :smile30:
 
jroberts88

jroberts88

New member
I've.broken many of.drills in metal but here's what to do and this is coming from a machinist.

Make sure the surface is flat as possible aka grinding it if nessary. Use a small drill and piolet the flat surface. Then using the carbide bit drill out the old one. If never using carbide bits before get a couple. If one breaks it may come out easy you can use a hammer and punch to chip out the carbide bit or just drill out the carbide with another carbide bit.
Any questions please let me know.

As far as lube you can use wd40 or just some old oil. But be warned it will get messy and keep a wet towel around
 
Last Mohecian

Last Mohecian

Administrator
Damn dude.  You can't win for loosing.  I'd push back from the table and take that thing to someone who can get it out.  For that matter SBC heads are pretty cheap these days on CL.
 
Last Mohecian

Last Mohecian

Administrator
ChryslerJet said:
If it were me at this point I would use a set of aluminum covers which are stiffer and a ton of silicone in that area and not worry about a boat for now until you get a chance to save the money to pull it and get it fixed right by the machine shop or out of the boat yourself working at an angle on the boat is never easy to do.

Just my 2 cents
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It's a traditional SBC.  With only 4 bolts in the valve cover that thing will leak oil like a sieve.  Especially if it is one of the bottom bolts.  Those things are hard enough to get to seal with 4 bolts much less 3.
 
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jimsplace

Active member
I think the best option to get the bolt out at this point would be taking it to a good welder and centering a 1/4 nut over the bolt and weld inside center of the nut to the bolt.  Let it cool enough to try and get the bolt out with a wrench
at the welding shop.  If the weld doesn't hold the first time, they can be more aggressive with the second weld attempt. 

In my opinion, you will not get it out by drilling with a hand drill.
Good luck.
 
jroberts88

jroberts88

New member
KONA said:
definitely good info,  :smile16:  a machinist and uses zip ties,  liken it  :smile16:
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hey now this aint about me... crazy.gif i was just offering help. and bty the zip ties is to keep wiries nice an clean  :smile17:

Also what size is the thread i can find out what size drill you need and if you do it straight you could just use a flat bottom tap to clean the threads.
 
73 Sanger Flat

73 Sanger Flat

Active member
Where are you located at ? Maybe some one is in your area that could help you .. You can get  a pair of old used heads cheap .. ..

I would do like the other people said , take it to a good welder and have him burn a nut on it and then let it cool and then try and back it out .. My local muffler shop has done this for me a few times ..

The problem is , that you most likely bottom the bolt out in the head and twisted it into , so it will be in there tight ...

I had to drill and tap one out of my flywheel bolt on my new engine , just have to take your time , small drill bit and keep working your way up in bit size until you have it large enough to get a good ez out in it ..

A complet  gasket set is probable cheaper than what you have already spent on drill bits ..
 
C

ChryslerJet

New member
Last Mohican said:
ChryslerJet said:
If it were me at this point I would use a set of aluminum covers which are stiffer and a ton of silicone in that area and not worry about a boat for now until you get a chance to save the money to pull it and get it fixed right by the machine shop or out of the boat yourself working at an angle on the boat is never easy to do.

Just my 2 cents
Click to expand...

It's a traditional SBC.  With only 4 bolts in the valve cover that thing will leak oil like a sieve.  Especially if it is one of the bottom bolts.  Those things are hard enough to get to seal with 4 bolts much less 3.
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I forgot about that I am used to the 5 on my Chrysler Heads.  My point was though that if he cant afford to spend the money on pulling the head and getting it done at a machine shop right now to look for an alternative that can keep him on the water for now but then again he does have other water toys.

As far as welding goes it appears based on the pics that the bolt is down in the hole so I don't think welding a nut is going to work without the welder accidentally welding to the head as well.
 
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NescherMonty17

New member
spd500 said:
If you can't get thebolt out then just drill it bigger and helicoil it
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i can go bigger? ive been scared to so much as touch the actual head, i thought if i cut anything out of the original bolt hole i was screwed... i can chew at this with a larger bit. maybe eat it all the way out?
 
Last Mohecian

Last Mohecian

Administrator
Should be 1/4-20 for the bolt.  All good advise but if you have not extracted a bolt with a busted hardened tool broke off in it, I would save yourself all the time & frustration and take it somewhere to get it removed.  A heli-coil kit is going to cost as much as a head gasket for a SBC.  You are not saving any money at this point trying to fix it yourself.
 
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