Scott's Build Thread- 85 CJ7 - Page 38 - JeepForum.com

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post #556 of 1546 Old 03-10-2013, 06:54 PM
Scott3140
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I would use the red locktite. It would hold good and you could still get it out if you have to.

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post #557 of 1546 Old 03-10-2013, 07:44 PM
lucdog
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My first thought is to take the manifold and have a slug tig welded into a larger hole. So what I mean is drill a 3/4" hole in the manifold, and use 3/4" aluminum bar stock 1" long. Then redrilled and tap the bar stock 5/8" deep.

The fix to this needs to be permanent. The last thing you want is taking the manifold off because JB weld , or loctite didn't work. I say this because the threaded hole is only 3/8" deep, that's not a lot of sealing area on the threads.

If you were to JB weld the threads, and bolt the bracket on, does the pulley line up with the crank/water pump pulleys?

On edit, a 3/8" bolt only needs 3/8" of thread to hold torque, that's in cast, or steel. I imagine aluminum would require twice that.

Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
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post #558 of 1546 Old 03-10-2013, 08:15 PM
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Words not required.

Bill

image-2212241607.jpg

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #559 of 1546 Old 03-10-2013, 08:34 PM Thread Starter
Skerr
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Quote:
Originally Posted by Scott3140 View Post
I would use the red locktite. It would hold good and you could still get it out if you have to.
That is an option. I believe all I need is some kind of sealant around the threads to prevent leakage, so this might work. Still, I'm wondering about hi-temp RTV??

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My first thought is to take the manifold and have a slug tig welded into a larger hole. So what I mean is drill a 3/4" hole in the manifold, and use 3/4" aluminum bar stock 1" long. Then redrilled and tap the bar stock 5/8" deep.

The fix to this needs to be permanent. The last thing you want is taking the manifold off because JB weld , or loctite didn't work. I say this because the threaded hole is only 3/8" deep, that's not a lot of sealing area on the threads.

If you were to JB weld the threads, and bolt the bracket on, does the pulley line up with the crank/water pump pulleys?

On edit, a 3/8" bolt only needs 3/8" of thread to hold torque, that's in cast, or steel. I imagine aluminum would require twice that.

Bill
This is probably the best idea, and I already talked to Clay about taking it to the school to do it. We were talking about welding it up from the inside, and Clay said they don't have the special rotating TIG head to do it, but we didn't talk about a slug welded in place. I'll cover that with him too.

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Words not required.

Bill

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post #560 of 1546 Old 03-10-2013, 08:51 PM
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And dessert also.



image-3457925591.jpg

Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #561 of 1546 Old 03-11-2013, 10:00 AM
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I'm bumping this for the intake manifold problem on page 37, starting on page 551.

Ideas?

Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #562 of 1546 Old 03-11-2013, 12:10 PM
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Looks like you are not alone Scott. http://jeepsunlimited.com/forums//sh...d.php?t=508122

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post #563 of 1546 Old 03-11-2013, 05:09 PM
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Scott I would not weld that hole up. The best fix is to drill and tap it for a tapered pipe plug, they're used elsewhere in engines. I think you could get by with a 1/8" tapered pipe tap for that size hole and most every hardware and allot of parts stores sells them. Use a brass plug if you can get it and seal it with some teflon paste sealer. Easy fix.
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post #564 of 1546 Old 03-11-2013, 06:17 PM
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Quote:
Originally Posted by Jim1611
Scott I would not weld that hole up. The best fix is to drill and tap it for a tapered pipe plug, they're used elsewhere in engines. I think you could get by with a 1/8" tapered pipe tap for that size hole and most every hardware and allot of parts stores sells them. Use a brass plug if you can get it and seal it with some teflon paste sealer. Easy fix.
Jim, he needs the hole for the power steering mounting bracket. Are you saying install the plug and then drill and tap the plug?

Bill

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #565 of 1546 Old 03-11-2013, 09:14 PM Thread Starter
Skerr
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No... the pipe plugs tighten up in a tapered hole, and they are shallow. Possible to get it to hang at the end of the hole, but I may not have enough thread left for the mounting bolt. I will investigate that.

Any problems with having a bolt or plug sticking out into the air channel on the intake? Will it disrupt airflow, etc?


Thanks, Jim. That's along the lines of what I was calling you about. I will touch bases with you at some point, but I am busy as all get out this week.

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post #566 of 1546 Old 03-12-2013, 05:40 AM
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Quote:
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Any problems with having a bolt or plug sticking out into the air channel on the intake? Will it disrupt airflow, etc?
Plug it and Dremel the inside flush?

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post #567 of 1546 Old 03-12-2013, 10:04 AM
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You run the risk of a vacuum leak but I think that is all. I would bolt it on and use a quality thread sealer. Just make a mental note if the pump bracket is ever removed to use more thread sealant on that bolt.

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post #568 of 1546 Old 03-12-2013, 10:05 AM
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Any problems with having a bolt or plug sticking out into the air channel on the intake? Will it disrupt airflow, etc?
I think your race qualified 258 will forgive a little air flow disruption.

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post #569 of 1546 Old 03-12-2013, 10:08 AM
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I have an intake I'd sell ya cheap that already has the power steering bracket holes. That would fix your problem easy

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post #570 of 1546 Old 03-12-2013, 02:40 PM
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So Skipper Scott lemme see if I got this correct? In the past gremlins came into your shop and moved bolt holes now they have increased the level of no goodness and stole a bolt hole from you intake manifold and stolen the threads from Clays steering box. Gawd this gremlins are getting serious!

Skipper here is what I would do if I were you, just weld up the bolt hole and not worry about bolt on your power steering bracket. Structurally you will be good with out it and trying to weld a boss to the manifold will be problematic.
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