Valley Pan
Thread Starter
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Laughing Gas
Joined: Jan 2003
Posts: 1,019
Likes: 2
From: Georgetown, Ky
Valley Pan
Okay I just swapped cams in my 390, and got the motor reassembled cleaned, and painted (see the 73-79 forum for photos) but it was late and I was in a hurry when I dropped the intake on, and didnt install the valley pan, is this something that really HAS to be there or will I be okay without it?
Elder User
Joined: Feb 2004
Posts: 909
Likes: 9
From: San Luis Obispo, CA
One of the things the valley sheet metal does is to keep oil off the heat riser part of the intake. There is also a small sheet metal shield attached to most manifolds right under the carb, but the passage runs all the way across the manifold. Oil that splashes on the hot parts of the manifold "cokes" in to carbon deposits which slowly build up. I do not think this will cause much serious problem in the short run, but eventually it will get into the pan.
I think you can get by, but will be interested if anyone has anything else to add. (I'll bet this piece is left out on purpose by many mechanics that do not like "extra parts".)
I think you can get by, but will be interested if anyone has anything else to add. (I'll bet this piece is left out on purpose by many mechanics that do not like "extra parts".)
Logistics Pro
Joined: Oct 2005
Posts: 3,785
Likes: 4
From: Mddl A MexCans
I'd say depending on use you may want it in there. 4 wheeling, traffic, slow high temp use will probably end up being an issue. Highway miles at smooth temps probably ok for a while ? Not sure really but ...it was there for a reason. And mine was covered in crap I thank god was not in the pan/bearings/oil galleries/etc...
!["Beemer Nut"'s Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%23bc5285' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>"</text></svg>)
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
Eventually the oil will coke up, should small particles break off and go downstairs the oil filter will collect them so bearings will be fine.
The oil pump will be the one that will get the damage from crunching
up those particles.
Back in 69 I finished an all night assembly then went to bed, later that morning dad placed the valley heat shield on top of the engine stand for me to see. Made me feel bad as dad always waited for me to screw up (again) as this was his replacement motor, I blew the last one up and it was dad's truck.
Now this was without bier.
The oil pump will be the one that will get the damage from crunching
up those particles.
Back in 69 I finished an all night assembly then went to bed, later that morning dad placed the valley heat shield on top of the engine stand for me to see. Made me feel bad as dad always waited for me to screw up (again) as this was his replacement motor, I blew the last one up and it was dad's truck.
Now this was without bier.
Thread Starter
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Laughing Gas
Joined: Jan 2003
Posts: 1,019
Likes: 2
From: Georgetown, Ky
I guess I'll cut the intake off.. Heres why im really not wanting too:
http://usera.imagecave.com/4StarCstm...r/IMG_4020.JPG
http://usera.imagecave.com/4StarCstm...r/IMG_4020.JPG
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Senior User
Joined: Sep 2006
Posts: 261
Likes: 0
From: Heart of Ga.
Don't they look good before they start up! Nice lookin motor! Just finished mine and she is sweet lookin to.
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Elder User
Joined: Feb 2004
Posts: 909
Likes: 9
From: San Luis Obispo, CA
Beemer has jogged my memory. His logic is correct - the problem is that the oil pump does have a "first-line of defense" against these particles: the pickup screen, which passes particles small enough for the oil pump to "crunch" and stops those that are too big. The problem is that, after a while, the big particles clog the pickup srceen and this is NOT GOOD! I have seen such screens & you don't want one.
Now you have a good reason to pull that manifold (+ all those pushrods).
Now you have a good reason to pull that manifold (+ all those pushrods).
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
arctic; I was waiting for someone to ask that same paint question.
Maybe if the motors installed backwards for the dizzy in the rear it will look normal.
Hey arctic, I got ya beat in age by exactly two months to the day.
Maybe if the motors installed backwards for the dizzy in the rear it will look normal.
Hey arctic, I got ya beat in age by exactly two months to the day.
Cargo Master
Joined: Apr 2004
Posts: 2,574
Likes: 4
From: Golden, CO
Man! A guy just can't catch a break around here! OK, OK, so he understands the correlation between color and power, and he didn't want to suffer the same fate as Burg460 (56K beware):
http://www.rmftc.com/forums/showthread.php?t=3353
I don't blame ya there Scott. If it's running just long enough to get on and off the trailer at a show or two I wouldn't think twice about it. At that rate you'd be doing something else with it next winter anyway. LOL If you want to drive it...now is a good time to fix it. Somehow I think you'll do fine with the touch-up.
