Re: Valley Pan Inverted
[Re: 3hundred]
#2820876
09/14/20 11:36 PM
09/14/20 11:36 PM
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FuriousMopar1968
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The breather locks were bent and it is very loose/wiggly now in the tower. So it’s possible if it was just a push in it might of done that, but the pressure did have to make it through the cover baffle first too. First thing in the path is that valley pan and it’s got a lot of surface area, but I really have No idea haha.
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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Re: Valley Pan Inverted
[Re: calrobb2000]
#2820877
09/14/20 11:37 PM
09/14/20 11:37 PM
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FuriousMopar1968
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That’s the odd thing I thought I’d see some lack of performance after, but it’s still a ball of fire. Did you compression test it?
Last edited by FuriousMopar1968; 09/14/20 11:38 PM.
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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Re: Valley Pan Inverted
[Re: FuriousMopar1968]
#2820916
09/15/20 03:17 AM
09/15/20 03:17 AM
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hp383
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Do you think I should open up the flap on bottom and lose the baffle? I always opened the slits in the breathers all the way to 90° on my dual 4bbl 383. Never had a valley pan grow into a hill pan.
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Re: Valley Pan Inverted
[Re: hp383]
#2820993
09/15/20 10:38 AM
09/15/20 10:38 AM
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FuriousMopar1968
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Yeah I think I’m just gonna open up the breather/baffles and run it. From what I hear I may have been somewhat lucky, though I do think I want to limit my Revs going forward haha. Does anyone know of a Rev Limiter set up that works with the orange box and OEM style Mopar Distributer? It definitely winds to quick for me to mechanically regulate with the 4.10 rear she’s got.
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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Re: Valley Pan Inverted
[Re: FuriousMopar1968]
#2821001
09/15/20 10:45 AM
09/15/20 10:45 AM
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hp383
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There's a cpuple companies that make an ignition box with a rev limiter built in.
FBO is one, Rev-n-nator is another.
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Re: Valley Pan Inverted
[Re: calrobb2000]
#2821023
09/15/20 11:46 AM
09/15/20 11:46 AM
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4406bbl
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hi
have not did comp test yet .
gona do all the easy stuff first ecu, dist change out ect as heders will be blocking some plug acces .
happened on race day 2 time runs at 109 mph, eliminations 1 st round big backfire with smoke out all sides of hood and filled driver compartment then suddenly takes off and runs 108 mph ?
3/4 sec. off my dial ?
now not running normal and exhaust not sounding right ???
If it has cast pistons I would be looking for broken ring lands on the pistons.
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Re: Valley Pan Inverted
[Re: hp383]
#2821058
09/15/20 12:47 PM
09/15/20 12:47 PM
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FuriousMopar1968
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There's a cpuple companies that make an ignition box with a rev limiter built in.
FBO is one, Rev-n-nator is another.
Do you know if the Rev N Nator is still being made? It says out of stock on the site unfortunately. The issue with the FBO is that it doesn’t have the ability to limit lower than 5200 RPM. Does anyone know if the “Pertronix 600 Digital Rev Limiter” would work inline with the orange box?
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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Re: Valley Pan Inverted
[Re: FuriousMopar1968]
#2821102
09/15/20 01:56 PM
09/15/20 01:56 PM
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Cab_Burge
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On your deal having excessive crankcase pressure I would do a leak down test also now to see if it is possibly ring seal, especially after doing a good compression test Crankcase pressure ( a lot of it) is the only thing that will cause that to happen, invert the intake valley pan
Last edited by Cab_Burge; 09/15/20 01:57 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Valley Pan Inverted
[Re: Cab_Burge]
#2821126
09/15/20 02:50 PM
09/15/20 02:50 PM
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FuriousMopar1968
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On your deal having excessive crankcase pressure I would do a leak down test also now to see if it is possibly ring seal, especially after doing a good compression test Crankcase pressure ( a lot of it) is the only thing that will cause that to happen, invert the intake valley pan Hey every bit of change is useful to me with this issue haha. Thanks everyone for you help with this! Unfortunately there’s no access to air at the unit it’s at so it’s gonna be difficult to perform a leak down on her, and on top of that it’s not Insured/reg’d since it’s been sitting for over a year thinking I had a blown engine. Wouldn’t the grade A compression readings indicate good ring sealing?
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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Re: Valley Pan Inverted
[Re: Cab_Burge]
#2821130
09/15/20 02:54 PM
09/15/20 02:54 PM
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A Crankcase Evacuation System before the mufflers will do that also ! LOL AKA as a crankcase pressure system with mufflers on Also she’s running single chamber Super 10 Flowmasters, do you think a Crankcase Evac to the header extensions would still build too much pressure? Those are barely even mufflers haha.
Last edited by FuriousMopar1968; 09/15/20 02:55 PM.
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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Re: Valley Pan Inverted
[Re: FuriousMopar1968]
#2821159
09/15/20 04:13 PM
09/15/20 04:13 PM
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GomangoCuda
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The issue with the FBO is that it doesn’t have the ability to limit lower than 5200 RPM.
Why would you want a limit lower than that?
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Valley Pan Inverted
[Re: FuriousMopar1968]
#2821165
09/15/20 04:27 PM
09/15/20 04:27 PM
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GomangoCuda
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Does anyone know of a Rev Limiter set up that works with the orange box and OEM style Mopar Distributer? It definitely winds to quick for me to mechanically regulate with the 4.10 rear she’s got. Any rev limiter that says it will work with an inductive ignition will work. MSD 8728 is an example but a bit pricey. There should be others still available. Just don't get one that is made for any kind of CD ignition.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Valley Pan Inverted
[Re: GomangoCuda]
#2821171
09/15/20 04:39 PM
09/15/20 04:39 PM
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FuriousMopar1968
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The issue with the FBO is that it doesn’t have the ability to limit lower than 5200 RPM.
Why would you want a limit lower than that? I’d have it set to 4000ish RPM as a right foot limiter during break in process haha. Its all to easy to go light years past that just cruising with the low rear it has in it. Going 65mph on the highway on my way to work it would be spinning 3500 RPM, one accidental down shift from partial throttle kickdown and it would scream immediately. I know this current engine is already broken in, but in the worse case of something failing I want to not worry about the next one.
1968 Plymouth Fury - 440 Dual Quad Tunnel Ram
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