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Old 07/21/21, 03:48 PM   #31
Rustytruck
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honest the bolder ran under me

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PvC hose from valve cover to the air cleaner. you will need the vacuum hoses to the vacuum thermostat to close off the snorkel and the water temperature vacuum switch at the front of the intake.

1974, stock 302, C4, BFG KM2 33x12.5x15, 8in rim, detroit rear, trutrac front 4.11 gearing, Warflairs,2.5" lift, chevy disc conversion, Hydraboost, owned since Christmas Eve 1977
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Old 07/21/21, 09:34 PM   #32
m_m70
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Quote:
Originally Posted by chrlsful View Post
"Gotta figure out how to go from round (3 inch) to 2X4 rectangle now tho...
not really clear on what you're looking for but you could probably use something like this to fab up what you need....or work with these guys.

https://restomodair.com/shopproducts...tor-4in-x-2in/

'70 302, TFS 170s, Holley 4160 carb, weiand stealth intake, LnL long tube headers, true duals, quick ratio power steering, power front disk, 2-1/2" suspension lift, Bilsteins on the corners, 1" body lift, 411 gears, 33 X 12.5 ATs
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Old 07/22/21, 07:36 AM   #33
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yup, dasts da idear.

Chad - '70 LUEB 1/2 cab on '77 frame (ie D44, PS, 4.11 BB trapezoidal 9"), 4.2L, RBS carb, DSII ign, NV 3550 / 'T' D20/PTO, 2" SL, 1" BL, 4 discs, 33x9.5x15, tool boxes, etc. Seeking: Hydraulic Gear Motor for Koenig PTO, chrlsful@aol.com
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Old 07/26/21, 09:16 AM   #34
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I am trying to piece back together my OE air cleaner. I have some oil spilling out of the oil breather (hoping its not my rings!) and the other valve cover on the passenger side. What am I missing here? I figure I am missing a grommet on the air cleaner itself where this PVC would fit in as it is just a bare metal hole after sand blasting and PC it, but what else do I need? Any idea on where to source the parts? I keep searching for PVC's and grommets but cant find any...maybe they are just generic which is why I cant find them when looking at the Bronco vendors or Summit when specifically searching for Bronco parts.
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Old 07/26/21, 06:19 PM   #35
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sounds almost like 'blow by'.
The system is a "closed pvc system". U need a Y/M/M specific pvc (back of motor helps on crankcase top offs) that goes to manifold not ported vac (ie below throttle plate). 2nd hose goes to a/c housing from center of 'fill cap' @ frnt of motor thus a closed AND clean system & easy top offs.
The rear hasa 'gromet' that presses into the V/C (top/bottom lips encase v/c inside/outside) and the PVC is just a friction 'jab' into it. Harder to explain then do ~

Chad - '70 LUEB 1/2 cab on '77 frame (ie D44, PS, 4.11 BB trapezoidal 9"), 4.2L, RBS carb, DSII ign, NV 3550 / 'T' D20/PTO, 2" SL, 1" BL, 4 discs, 33x9.5x15, tool boxes, etc. Seeking: Hydraulic Gear Motor for Koenig PTO, chrlsful@aol.com
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Old 07/26/21, 07:49 PM   #36
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Quote:
Originally Posted by clinem03 View Post
I have some oil spilling out of the oil breather (hoping its not my rings!)
Quote:
Originally Posted by clinem03 View Post
I figure I am missing a grommet on the air cleaner itself where this PVC would fit in as it is just a bare metal hole after sand blasting and PC it, but what else do I need?
It's common for that particular design to build up oil and have it seep out as you drive over time. You can clean it up, seal the tube-to-plastic elbow interfaces better (so more of the oil drips back into the engine instead of out on top of it) and make sure that your other valve cover has a good PCV valve in it to suck most out.
The side you have pictured is just an elbow with a tube for clean air to flow back into the engine from the air cleaner. It's not the PCV valve which would be in the other cover.
Where you have it in the second pic there is a hole under the air cleaner housing. If it's just a hole, you're missing the rubber grommet that the elbow presses in to. Like you were thinking
That holds it in pretty securely.

Quote:
Originally Posted by clinem03 View Post
and the other valve cover on the passenger side.
You mean the driver's side?

Quote:
Originally Posted by clinem03 View Post
What am I missing here?
Can't tell yet. Need to see pics of the underside of the air cleaner and the driver's side of the air cleaner, and the driver's side valve cover.
But it sounds like you only need the grommet. I believe they are generic, but can't say for certain as I've never had to replace the one in the air cleaner housing before. But they sell PCV grommets of many descriptions at most parts sources.

Quote:
Originally Posted by clinem03 View Post
Any idea on where to source the parts? I keep searching for PVC's and grommets but cant find any...maybe they are just generic which is why I cant find them when looking at the Bronco vendors or Summit when specifically searching for Bronco parts.
Yeah, not sure why they're not coming up. But maybe someone has some good search-kung-fu to help.

Paul

'71 Wagon, 3.5" WH, F150 disc brakes and steering, 4.11 33x11.50 Thornbirds, Kayline soft top, Hanson bumpers. "Built, not bought"

'68 LUBR, 2.5 + 1 WH, 31x10.50, 4.56, Explorer and 4R70w by EFI Guy, WH disc brakes, Hanson front bumper, Warn winch. "Bought, not built"

www.wildhorses4x4.com
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Old 07/26/21, 08:41 PM   #37
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No "search kung-fu" needed......

search PCV and PCV Grommet instead of PVC and you'll get all the info you need.

'70 302, TFS 170s, Holley 4160 carb, weiand stealth intake, LnL long tube headers, true duals, quick ratio power steering, power front disk, 2-1/2" suspension lift, Bilsteins on the corners, 1" body lift, 411 gears, 33 X 12.5 ATs
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Old 07/27/21, 03:57 AM   #38
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Originally Posted by m_m70 View Post
No "search kung-fu" needed......

search PCV and PCV Grommet instead of PVC and you'll get all the info you need.
Insert face palm here. This is the exact reason I canít find it! Hahaha
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Old 07/27/21, 03:59 AM   #39
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Quote:
Originally Posted by DirtDonk View Post
It's common for that particular design to build up oil and have it seep out as you drive over time. You can clean it up, seal the tube-to-plastic elbow interfaces better (so more of the oil drips back into the engine instead of out on top of it) and make sure that your other valve cover has a good PCV valve in it to suck most out.
The side you have pictured is just an elbow with a tube for clean air to flow back into the engine from the air cleaner. It's not the PCV valve which would be in the other cover.
Where you have it in the second pic there is a hole under the air cleaner housing. If it's just a hole, you're missing the rubber grommet that the elbow presses in to. Like you were thinking
That holds it in pretty securely.



You mean the driver's side?



Can't tell yet. Need to see pics of the underside of the air cleaner and the driver's side of the air cleaner, and the driver's side valve cover.
But it sounds like you only need the grommet. I believe they are generic, but can't say for certain as I've never had to replace the one in the air cleaner housing before. But they sell PCV grommets of many descriptions at most parts sources.



Yeah, not sure why they're not coming up. But maybe someone has some good search-kung-fu to help.

Paul
Super helpful, as always, Paul! Iíve got some parts to order and some tinkering to doÖ
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Old 07/27/21, 10:03 AM   #40
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There is a spectrum of auto parts suppliers.
At one end R some pretty esoteric suppliers that few of us hear of. Dwn the other end is the kind of places I frequent, work at, or are known to most of us. At the opposite end, still a lill familiar to us R all "the typical bronk vendors".
I stay away from that whole end as it is the most expensive (the items often going thru more 'middle men'), my self a near 40 yr owner & sometimes prts retailer (we call big box stores). Since the early '90s I've frequented these "on-line clubs' of bronks. Here I've learned abt specific oem replacement prts that fit for upgrades (shelby drop, Chuck's explanation of the cj & el dorado rear disc exchange). "Bronco Brothers" as a grp know so much more that I as a single individual. Some know the 'drop ship' vendors too.
They offer comradeship and tips that save me time'n money. Again, I'd suggest beginning at the neighborhood desk jockey (some 1 who just became employed as prts retailer, may not even B an enthusiast, only knows what a puter tell him/her) ina big bx store (AutoZone, advance, PepBoys, o reilly's). They have these parts. Money'n time/mail costs unimportant? go up the scale - to 'typical vendor'. If more than a '60s tv star
https://www.youtube.com/watch?v=y6PqrTZsho0
U may want to have a full listing of suppliers who can meet ur needs for long term ownership and daily driving. Nota recreation user, but some one who needed my "woods wrk truck" 8, 9 mo/yr, sometime 7/d/wk for wks @ a time 35 yrs - I needed to 'get 'er done' so needed something a lill different. HTH ~

Chad - '70 LUEB 1/2 cab on '77 frame (ie D44, PS, 4.11 BB trapezoidal 9"), 4.2L, RBS carb, DSII ign, NV 3550 / 'T' D20/PTO, 2" SL, 1" BL, 4 discs, 33x9.5x15, tool boxes, etc. Seeking: Hydraulic Gear Motor for Koenig PTO, chrlsful@aol.com
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