| Author |
Message |
    
Roverzfan
| | Posted on Saturday, September 14, 2002 - 10:02 pm: | 
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Anyone replaced an exhaust manifold before. I have a 98 Disco that cracked the right side manifold. I found a used one that I will be putting on next week. Just wondering if there were any gotchas to look out for. I figure - undo the nuts. Pull off the old one. Replace gaskets. Put on new one. Thanks. |
Ron
| | Posted on Saturday, September 14, 2002 - 10:55 pm: |
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Break stud, break exhaust manifold bolts. Braze in new stud, pull head to drill and tap out exhaust manifold bolt . . .
BUY NEW BOLTS! and coat in high temp anti seize for next time.
Ron |
Brian
| | Posted on Saturday, September 14, 2002 - 10:58 pm: |
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I have replaced both of mine before. The passengers' side was actually broken and caused my '97 D1 to sound like a very large lawnmower. The drivers' side looked to be in the same deteriorated shape so I replaced both. Just remember to apply Loctite on the NEW EXHAUST PIPE STUDS (not the head mounting bolts) or they will work their way out eventually. Yes, I said 'new' studs. You will probably either break and/or remove the old studs complete with the nuts still attached (through no fault of your own). I believe in paying the $3 for a new set of studs and nuts, it is much easier and cleaner. And get ready to lay on your back under the vehicle to get at those exhaust pipe stud nuts. |
Ron
| | Posted on Saturday, September 14, 2002 - 11:10 pm: |
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Oh and the bolt set up is better than the stud set up to mount them to the head, if somewhat more time consuming to install (I have used both).
Yes new exhaust studs is smart though I would not loctite them as if they snap (which they sometimes do) you are fawked the next go around.
Ron |
Roverzfan
| | Posted on Sunday, September 15, 2002 - 07:48 am: |
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Why would bolts be more time consuming than studs? and why would you braze in a new stud? My mechanical skill is basically - If I can take it off I can put it back on, and I can genrally figure out how to take it off. :-) but I might miss some of the finer details that is why I use great resources like Disco Web. :-) |
Ron
| | Posted on Sunday, September 15, 2002 - 06:31 pm: |
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Bolts are more time consuming because you have to use locking tabs which take some creativity to bend over. The studs I believe are stretch and do not use locking tabs and thus are quicker.
You would braze in a new stud when you break an old stud and have to drill it out.
Ron |
Bill Bettridge (Billb)
| | Posted on Monday, September 16, 2002 - 08:25 am: |
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Use the DII manifold bolt kit on your D1 - much updated and improved.
Bill |
Brian
| | Posted on Monday, September 16, 2002 - 12:18 pm: |
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I know these posts are confusing. Yes, it is a simple procedure. Take off old, put on new. Simple. |
Bill Bettridge (Billb)
| | Posted on Monday, September 16, 2002 - 12:37 pm: |
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Also - saw that you're putting on a used manifold - it's probably worth the $25 to have "faced"
(ie: sealing surface machined true) - might save you some headache down the road.
Bill |
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