View Full Version : Engine Brass bolt on mixture unit broken
DrWin
01-22-2022, 12:45 AM
Old injury, but I thought I'd take care of it now that the mixture unit is out of the car and I'm waiting for my induction heater:
67888
How do I get this miserable little bugger out?
Roberto
01-22-2022, 04:10 AM
67890
I have the same issue and reluctant to use easy out.
Going to try a different method - will let you know if it works...
dmcman73
01-22-2022, 06:40 AM
Old injury, but I thought I'd take care of it now that the mixture unit is out of the car and I'm waiting for my induction heater:
67888
How do I get this miserable little bugger out?
Us a sharp drill bit as the piece is brass (obviously) and use oil as you drill a hole in its center. Then slowly use an easy out, those brass bolts have an oring at the end of them that seals it which is why they are tough to get out, they are not corroded in. Don't use an induction heater on it.
I used an easy out on mine as the PO tried to adjust it and snapped it (it was also backed out a bit so it had to come out). Turning the easy out slowly extracted it cleanly with no issues, for me.
Bitsyncmaster
01-22-2022, 01:21 PM
Old injury, but I thought I'd take care of it now that the mixture unit is out of the car and I'm waiting for my induction heater:
67888
How do I get this miserable little bugger out?
I don't think an induction heater would work on brass or aluminum. Probably not even stainless steel.
David T
01-22-2022, 02:25 PM
An induction heater (or any kind of heat or spray) is not necessary because it is not stuck because of corrosion. All you need is some way to mechanically attach to it. Either try cutting a slot in it with a die grinder or Dremel to use a screwdriver or drilling into it to use an Ezy-Out or a reverse (left hand) drill or even drill and tap it and stick a bolt in it. As mentioned, it is hard to turn because of an "O" ring.
DMC-Ron
01-23-2022, 03:02 AM
I don't think an induction heater would work on brass or aluminum. Probably not even stainless steel.
Induction heaters will work on any metal that conducts electricity. There is an often heard misconception that induction heaters will only work on metal that can be magnetized. Not the case, any metal that can conduct electrical current can be heated. However, metals that have lower electrical resistance are more difficult to heat with induction. So copper, aluminum, and brass which present a lower resistance to electric current take longer for an induction heater to heat up. Steel has a higher resistance and will heat relatively quickly. Dave is right that aluminum or brass will not heat up as easily as steel. It will take longer for the induction heater to work with those materials. That's the reason cast iron pans are preferred for an induction stovetop.
No, I'm no induction heater expert. I was (and still am) considering getting an induction heater. I spent hours down the google rabbit-hole looking into this.
Ron
Since, as D:01:13 says, they are not used on a DeLorean, why not use epoxy...??
SS Spoiler
01-23-2022, 06:49 PM
I thought those were the bolts we're supposed to
leave tight. opened they will give you vacuum leaks....?
DrWin
01-25-2022, 03:52 PM
Used a diamond bur to cut a slot in the screw, and used a straight/flat screwdriver to screw it out. Relatively easy. :)
67947
Roberto
01-26-2022, 11:51 AM
Used a diamond bur to cut a slot in the screw, and used a straight/flat screwdriver to screw it out. Relatively easy. :)
67947
67948
I tried to secure a hex nut but that didn't work, but your suggestion did! Thanks.
Robert
Powered by vBulletin® Version 4.2.5 Copyright © 2026 vBulletin Solutions Inc. All rights reserved.