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| Heater Take Off Studs https://www.ausmini.com/forums/viewtopic.php?f=2&t=79296 |
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| Author: | 1275LS [ Sat Nov 24, 2012 6:58 pm ] |
| Post subject: | Heater Take Off Studs |
Ok so one of the heater take off studs is cactus leading to a little leak there. Are these easy to remove and replace? Any tricks? They are 1/4 UNF. Can I replace them with bolts? Thanks guys. |
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| Author: | Mick [ Sat Nov 24, 2012 7:09 pm ] |
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You sure can replace them with bolts, 1/4" UNC. You may have a bit of trouble removing the stud remnants however depending on the rust. You might be able to catch the top of the old stud with a pair of pliers or vice-grips, otherwise you will need a fine easy out. |
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| Author: | drmini in aust [ Sat Nov 24, 2012 7:57 pm ] |
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These 2 studs into the head are 1/4" UNF, not UNC. Sure, bolts are less hassle. 
If you need to drill it out and retap, do it properly; use a bench drill or milling machine.... I have a 1275 head here where somebody didn't- the drill wandered and finished up into the water jacket and out the side of the head! I fixed it by boring the head for an insert, but it wasn't easy. |
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| Author: | 1275LS [ Sat Nov 24, 2012 8:25 pm ] |
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As it happens I bought a small easy out the other weekend. ... Thanks guys |
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| Author: | drmini in aust [ Sat Nov 24, 2012 8:52 pm ] |
| Post subject: | |
If the stud is broken off be careful with that Ezy-out. They are hardened and brittle. If it breaks in there it will not be `Ezy' to get `out'.
I am a fitter/machinist by trade, and have removed many busted and corroded studs from car engines and outboard motors. No way will I use an ezy-out on small studs, they break too easy. The correct engineering method is drill a concentric hole in the stud to the tapping size of the thread (in your case, 5.5mm) then screw a 1/4 UNF tap in. It will pick up the thread remains and they will come out with the tap. The thread should be undamaged.
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| Author: | 1275LS [ Sat Nov 24, 2012 10:21 pm ] |
| Post subject: | |
The stud is there still and I should be able to get it out. I would have left the ezy out till last but as you say the tap is the go. Thanks for the heads up in any case. |
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| Author: | adamstuart [ Sun Nov 25, 2012 3:09 pm ] |
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I would sooner weld a nut onto the stub of a stud than I would try using an easy out. Weld on a nut, and you've got a bolt. And the heat from welding likely loosened it up. |
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| Author: | drmini in aust [ Sun Nov 25, 2012 3:41 pm ] |
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It's only a 1/4" stud, can't be that tight. Yep welding a nut on is fine. A pair of vice grips will get it if there's enough sticking out to grab onto. Warming the head up a bit helps too. |
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