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Unread 02-18-2013, 02:58 PM   #1546
MoC
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Not yet Matt. I have a dedicated port put just have not hooked it up yet, planning on doing it tomorrow when I start tuning on it.

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Unread 02-18-2013, 02:58 PM   #1547
lucdog
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Quote:
Originally Posted by Matt1981CJ7
Yep ^^^^

MoC have you put a vac gauge on a manifold source, yet? What's your idle pressure?

Matt
Instead of plugging the vacuum line, hook a vacuum gauge to the manifold vac. carb port. It will serve the same function as a plug in the line .


Bill
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1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 02-18-2013, 07:38 PM   #1548
commadore64
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Sounds awsome MoC... makes me wish I was that far along!!!
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My build thread: http://www.jeepforum.com/forum/f8/bo...j-5-a-1290405/

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Unread 02-18-2013, 10:52 PM   #1549
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Way to go! When you get the bugs ironed out, I have a feeling you're gonna be a happy boy!

I use manifold vacuum, as well. Mine runs good timed at 14 degrees BTDC. I use a vacuum gauge to set the timing, and the carb.

Rich
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Unread 02-19-2013, 10:49 AM   #1550
drespecki
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Quote:
Originally Posted by MoC View Post
Well for lack of anything better to do today I started another little jeep project. A while ago Paul posted a picture of a fab job he had someone do on his factory air cleaner to fit on to the 2100 and I decided "I can do that" so off to thinking I went.



Bought some 30g ducting from lowes.



My plans are to cut it down to about 3 inches tall and then weld it to the base of the 2100 filter plate I have been using.



Then I am going to cut a hole in the top of the 2100 filter plate I have been using for the original air cleaner horn to fit in to.



Then weld it to the factory air cleaner and then to the lower piece.

No problem!



Thanks for the detailed writeup! Do you have a link to Paul's modification? I want to do this and the more info I get, the better..
..
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Unread 02-19-2013, 01:46 PM   #1551
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Quote:
Originally Posted by MoC View Post
It was running on manifold in the video. I had 15 min just now to play with it. Heres what I know. The only way it will stay running at idle is with the idle speed turned all the way up and the advance pushed off the scale. I am thinking I have to have a vac problem somewhere which is allowing it to suck air. Thinking with idle speed all the way up and advance up its compensating for the air leak. Mixture screws are 2.5 turns out and all 8 are firing.

Going to tune on it tomorrow and plug all the vac lines and see what I get.

Matt, question about tuning with manifold vac. With ported you are supposed to plug the advance line when setting the timing. I would imagine with manifold you leave it connected when tuning since it effects your timing at idle, correct? Do you still set your initial time it like you do with ported?
Hey Moc,

Couldn't you test for a vacuum leak by covering your carb up at the choke plate. If it still runs you have a vacuum leak if it dies you don't?

If it does still run when covered up then you can start playing with all the lines to see where the leak is.

SC
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Unread 02-19-2013, 03:35 PM   #1552
Matt1981CJ7
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Having watched MoC's meticulous habits on this build, I'd be surprised if he has a large enough leak to prevent the engine from running.

I'm thinking ignition/timing.....

Hopefully MoC will have a happy report for us, soon.

Matt
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Unread 02-19-2013, 03:43 PM   #1553
lucdog
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Quote:
Originally Posted by Matt1981CJ7
Having watched MoC's meticulous habits on this build, I'd be surprised if he has a large enough leak to prevent the engine from running.

I'm thinking ignition/timing.....

Hopefully MoC will have a happy report for us, soon.

Matt
Nope, it's not ign. or timing. It's my very well educated guess its the thick gasket under the carb. I imagine we'll know fairly soon.
Steve, he did what you suggested, it ran mucho better with his hand over the top of the carb.
I leave the rest to MoC.
Bill
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1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 02-19-2013, 03:48 PM   #1554
Matt1981CJ7
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So, RPMs increased with the hand cupped over the carb, eh? That's surely a leak. Good call, Steve and Bill.

I guess MoC did mention it ran while warming up, so it liked being choked, but then died once warm.

Matt
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Unread 02-19-2013, 03:54 PM   #1555
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Quote:
Originally Posted by ASteve

Hey Moc,

Couldn't you test for a vacuum leak by covering your carb up at the choke plate. If it still runs you have a vacuum leak if it dies you don't?

If it does still run when covered up then you can start playing with all the lines to see where the leak is.

SC
Yup, that's the first thing I did this am. With hand over the carb is smooths out and idles so its a vac leak. Yanked the PVC & brake booster and it still ran... So it's either the carb or manifold. Pulled the carb and waiting in a gasket. Under that suspicion I had one ordered to autozone but the sent the wrong one.
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Unread 02-19-2013, 03:55 PM   #1556
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Quote:
Originally Posted by Matt1981CJ7
So, RPMs increased with the hand cupped over the carb, eh? That's surely a leak. Good call, Steve and Bill.

I guess MoC did mention it ran while warming up, so it liked being choked, but then died once warm.

Matt
It wasn't really a guess on my part,after talking and a couple texts with MoC yesterday and this morning. I cheated a little.
My hope is he and his out of town friend are at the muffler shop right know. Could be wrong about that though.
Bill
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1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 02-19-2013, 04:01 PM   #1557
Matt1981CJ7
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Quote:
Originally Posted by lucdog View Post
It wasn't really a guess on my part,after talking and a couple texts with MoC yesterday and this morning. I cheated a little.
My hope is he and his out of town friend are at the muffler shop right know. Could be wrong about that though.
Bill
Ahhh....going all "behind the scenes" on us, eh? I see how you operate.

I hate carb gaskets.....

Matt
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Unread 02-19-2013, 04:24 PM   #1558
ASteve
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Quote:
Originally Posted by lucdog View Post
Nope, it's not ign. or timing. It's my very well educated guess its the thick gasket under the carb. I imagine we'll know fairly soon.
Steve, he did what you suggested, it ran mucho better with his hand over the top of the carb.
I leave the rest to MoC.
Bill
Hey Bill,

I didn't see where he did this....or is this one of those behind the scenes phone call / text
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Unread 02-19-2013, 04:37 PM   #1559
lucdog
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Quote:
Originally Posted by ASteve

Hey Bill,

I didn't see where he did this....or is this one of those behind the scenes phone call / text
I talked to MoC right after he did it.
__________________
1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 02-19-2013, 05:42 PM   #1560
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Dang, MoC... that sounds almost as good as Clay's 258 with uncorked headers!

ATTA BOY!

I am officially caught up.
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Clay's Build Thread
http://www.jeepforum.com/forum/f8/cl...hread-1061897/
Scott's Build Thread
http://www.jeepforum.com/forum/f8/sc...5-cj7-1147913/
Fallon (and Dad) Build Thread
http://www.jeepforum.com/forum/f11/f...-okee-1445206/
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