|
|
Post by cocacoladodge on May 27, 2012 9:57:27 GMT -5
I just got a Emip GT 4-tip exhaust from a guy on TheSamba that is like new... So here is my problem, I sprayed down the nuts on the current exhaust and about 1/2 hour later I tried to loosen them. They all felt solidly rusted yet, except for one. 1/4 turn on one of the studs on the head and snap, it finished breaking off. from the look of the dirt and buildup it was mostly twisted about break off years ago. It broke flush with the head...
Now before I proceed and possibly break off more, are those studs that screw into the head, or are they part of the head? And if they are part of the head, how deep can I drill into the head to put a stud in?
The other nuts are rusted on bad as well, any reccomendations?
|
|
Zmud
Junior Member
Posts: 57
|
Post by Zmud on May 27, 2012 10:58:30 GMT -5
Those are studs. They screw into the head about a 1/2"-3/4". I would recommend drilling them out and then get a easy-out if they all break on you or use a little heat..If you end up destroying it there is always helicoil..... it stinks but thats what you get with stuff 30+ years old.
|
|
|
|
Post by jspbtown on May 27, 2012 12:36:36 GMT -5
If I recall correctly the studs have an open area in the head behind them. So if you drill through them you drill into a space on the outer section of the head.
Its very common. There are several things you can do.
1. If there is some stud sticking proud of the stud (I know not this one but in case you snap another) you can mig weld a nut onto the stud. The heat from the welding often loosens the stud.
2. Cut it flush with the head and drill it out They make step studs you can use or what I have done is gotten some stainless or grade 8 bolts, cut the heads off and used them after you tap the head. You don't have to get all of the old stud out. You can just run a tap through it for a slightly smaller SAE stud if you like.
|
|
|
|
Post by cocacoladodge on May 27, 2012 21:21:24 GMT -5
Well, I got all the top nuts off fine, as well as the little ones for the intake heater tube thingys. Only two at the bottom broke off, the first I mentioned before was flush with the motorhead, and the second broke off at the bolthead. I have the new exhaust set in place and it sounds nice. The only time it backfired and shot flames out between the system and the engine was when I was playing with the throttle.
Tuesday, if nothing else comes up, I'll be drilling and taping one stud and welding a nut onto the other.
Thanks for the help guys, it was very helpful info.
|
|
