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What do I do with this???? clogged head? carbon?
#314595
05/11/09 01:14 PM
05/11/09 01:14 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
OP
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OP
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
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OK, as I always say, I am no mechanic. I love the body and paint work but hate mechanics. I am restoring this 67 power wagon and am changing the the 2BBl for a 4 BBL intake, new barn and electronic ignition. when I pulled the 2BBL intake I found this clogged port???? Ywo questions? Can I just break it out and if so, how do I keep the mess from going inside the engine and causing issues. And, what causes this, should I check further into the motor or do I need to fix something while I am in there????? Its only clogged on one side.  Thanks Dave
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Re: What do I do with this???? clogged head? carbon?
[Re: RUMBLON]
#314596
05/11/09 01:17 PM
05/11/09 01:17 PM
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Joined: Jan 2003
Posts: 17,861
albany ny
05dakota
I Live Here
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I Live Here
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Posts: 17,861
albany ny
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thats the exhaust cross over
5549 post on old board
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Re: What do I do with this???? clogged head? carbon?
[Re: 05dakota]
#314597
05/11/09 01:19 PM
05/11/09 01:19 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
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OP
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Cambridge Idaho
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Quote:
thats the exhaust cross over
Ok, does that mean that I can simply break it inwards and it will be blown out the tail pipe? and any idea if something wrong is causing it, or is it normal??
Thanks Dave
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Re: What do I do with this???? clogged head? carbon?
[Re: Jim_Lusk]
#314599
05/11/09 01:35 PM
05/11/09 01:35 PM
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Joined: Jan 2003
Posts: 9,982
Ansonia, CT
CJK440
master
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master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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Stab at it with a shop vac nozzle nearby.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: What do I do with this???? clogged head? carbon?
[Re: 71 FJ6 Charger]
#314602
05/11/09 02:08 PM
05/11/09 02:08 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
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OP
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
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I had to drill it out  Its approx 70 percent open at this point. Made sure nothing got into the valley and used the vacume anyways. all I need now in the intake gaskets, valve cover gaskets, new fuel pump and thermostat and its mostly ready to go. Now, I just need to repair the radiator support and install and I can get these painted fenders off of the ground  Lots of days work left. Dave thanks
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Re: What do I do with this???? clogged head? carbon?
[Re: RUMBLON]
#314603
05/11/09 02:29 PM
05/11/09 02:29 PM
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Joined: Apr 2007
Posts: 2,826
NY usa
540challenger
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master
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Posts: 2,826
NY usa
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Quote:
I had to drill it out Its approx 70 percent open at this point. Made sure nothing got into the valley and used the vacume anyways.
all I need now in the intake gaskets, valve cover gaskets, new fuel pump and thermostat and its mostly ready to go.
Now, I just need to repair the radiator support and install and I can get these painted fenders off of the ground
Lots of days work left.
Dave
thanks
What 4BBl manifold are you putting on there alot of the aftermarket intake's don't used the crossover
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Re: What do I do with this???? clogged head? carbon?
[Re: RUMBLON]
#314604
05/11/09 02:31 PM
05/11/09 02:31 PM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
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master
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Indiana
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As mentioned, the easiest way to clean it is with a shopvac nozzle sucking the particles up as you go.
The heat crossover heats the manifold so that the divorced choke will operate properly (in concert with the heat riser in the exhaust manifold) and it also helps keep the carb warm to atomize fuel better.
From my experience, even if the engine will start/run with a blocked crossover, you’re still losing MPG and washing your cylinders with fuel due to a choke that might not open fully. The effects of this vary with the climate you live in.
It’s also been my experience that this is a smallblock issue. I’ve had two 318s do this to me (one did it twice) but I’ve not yet had (or seen) a bigblock plug this passage.
Blocking/not blocking the crossover can be a heated discussion (pun intended) but IMO the closer to stock the engine is, the better off you are to maintain its function.
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
Send a PM.
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Re: What do I do with this???? clogged head? carbon?
[Re: 540challenger]
#314605
05/11/09 04:31 PM
05/11/09 04:31 PM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
OP
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OP
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Cambridge Idaho
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Quote:
Quote:
I had to drill it out Its approx 70 percent open at this point. Made sure nothing got into the valley and used the vacume anyways.
all I need now in the intake gaskets, valve cover gaskets, new fuel pump and thermostat and its mostly ready to go.
Now, I just need to repair the radiator support and install and I can get these painted fenders off of the ground
Lots of days work left.
Dave
thanks
What 4BBl manifold are you putting on there alot of the aftermarket intake's don't used the crossover
this stock one but not the carb.
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Re: What do I do with this???? clogged head? carbon?
[Re: RUMBLON]
#314606
05/11/09 04:41 PM
05/11/09 04:41 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I would not chip away anything out of there & risk a hardened piece of carbon getting by you & into the oiling system and as said add an electric choke otherwise the choke wont open up near fast enough & the plugs will foul in short order plus the mileage/cyl wash.
live every 24 hour block of time like it's your last day on earth
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Re: What do I do with this???? clogged head? carbon?
[Re: buildanother]
#314608
05/12/09 09:45 AM
05/12/09 09:45 AM
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Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
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Posts: 14,610
Not2farfromNashville, TN
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This happened on my original 360 2bbl in my van. In 20 degree weather it would sputter when going slow around corners.
You need to pull the head IMO. Valve seals are probably shot. The valves are probably crudded up bad. Worn valve guides are often the reason.
"The only thing to do for triumph of evil is for good men to do nothing"
"NUNQUAM NON PARATUS!"
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Re: What do I do with this???? clogged head? carbon?
[Re: buildanother]
#314610
05/12/09 10:27 AM
05/12/09 10:27 AM
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Joined: Mar 2003
Posts: 15,478
the boonies
aarcuda
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I Live Here
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the boonies
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Quote:
Be aware that some of that crud will end up in 2 cylinders, as the other end of that channel of carbon is right at the exhaust bowls of the 2 cylinders. It will probably burn out of there anyway though, so just get as much out of there as you can. And the heat riser is probably no good, that's what makes that stuff pile up in there. The chevies also had the same problem and delayed choke opening etc.
 make sure the exhaust valve is closed for those cylinders (i believe they are 5 and 4. if not its 3 and 6. look at the hump in the cylinder and it will go to an exhaust port) or else hard carbon will slip past the exhaust valve and into the cylinder
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Re: What do I do with this???? clogged head? carbon?
[Re: MoparforLife]
#314611
05/12/09 10:58 AM
05/12/09 10:58 AM
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Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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Quote:
Like said above most of your after market performance manifolds are blocked any way so it would be of no advantage to go through the work to chip it out and risk getting carbon spread through the engine.
Not so! My holley SD, Eddie LD340, LD4B, Offy etc have exhaust crossovers. Your Crosswind, Airgap etc. don't. We are talking about a truck here, not a racecar.
I run with mine blocked off on my 360. It is an aluminum intake. It is OK even down to 2* But that is aluminum! Not iron! Gonna drive in the winter up there in Idaho, and Northern Nevada with an iron intake? Do the job right.
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Re: What do I do with this???? clogged head? carbon?
[Re: Rug_Trucker]
#314613
05/12/09 11:55 AM
05/12/09 11:55 AM
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
RUMBLON
OP
master
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OP
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Joined: Jan 2003
Posts: 9,857
Cambridge Idaho
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Quote:
This happened on my original 360 2bbl in my van. In 20 degree weather it would sputter when going slow around corners.
You need to pull the head IMO. Valve seals are probably shot. The valves are probably crudded up bad. Worn valve guides are often the reason.
Man, I didnt want to get into this engine that much. as stated above I drilled MOST of it out. The inside looks good, but I am no mechanic. So I should pull the heads and look at the valves seals. So, you mean it needs a valve job????
Dave
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Re: What do I do with this???? clogged head? carbon?
[Re: RUMBLON]
#314614
05/12/09 12:03 PM
05/12/09 12:03 PM
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Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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Quote:
Quote:
This happened on my original 360 2bbl in my van. In 20 degree weather it would sputter when going slow around corners.
You need to pull the head IMO. Valve seals are probably shot. The valves are probably crudded up bad. Worn valve guides are often the reason.
Man, I didnt want to get into this engine that much. as stated above I drilled MOST of it out. The inside looks good, but I am no mechanic. So I should pull the heads and look at the valves seals. So, you mean it needs a valve job????
Dave
It might. I pulled a slant head apart that had crud caked up on the valves from the guides and seals leaking. Just one side of the head and stem.
A wire wheel fixed that. The faces of the valves were fine. It was a wonder it could breath with tha much crap on them.
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