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03-22-2008, 02:04 PM
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CC Member
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Join Date: Jun 2006
Location: Calgary,
AB
Cobra Make, Engine: Butler Racing/427 side oiler
Posts: 371
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Not Ranked
whats going on?
Ok second time into the motor ...valve guides are good ...going through a little oil but tough to tell due to side oiler 427 marking its territory a little much.
Question I have is where is all the oil thats on the back of both the intake and exhaust valves coming from?
They were spotless going in and now there coated with oil and sludge. This is after about 1500 miles
I will post pics in a bit |
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03-22-2008, 02:20 PM
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CC Member
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Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,601
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Not Ranked
Has to be the valve guide seals!
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03-22-2008, 02:28 PM
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CC Member
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Join Date: Jun 2006
Location: Calgary,
AB
Cobra Make, Engine: Butler Racing/427 side oiler
Posts: 371
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Not Ranked
I put on brand new good teflon ones?
I dont get it
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03-22-2008, 02:38 PM
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CC Member
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Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,601
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Not Ranked
What about the crankcase ventilation system?? Do you have a PCV valve?
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03-22-2008, 03:02 PM
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CC Member
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Join Date: Jun 2006
Location: Calgary,
AB
Cobra Make, Engine: Butler Racing/427 side oiler
Posts: 371
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Not Ranked
ya I do ...but Im wondering if I have a little too much CCV actually ...hummmm Maybe Im sucking in too much oil from the PCV through the carb ...but You would think that would burn off? |
03-22-2008, 04:01 PM
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CC Member
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Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,601
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Not Ranked
Often times if there is not a baffle in the valve cover under both the PCV and the breather this can happen.No baffle and the intake just sucks the oil through the PCV into the carb. |
03-22-2008, 04:19 PM
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CC Member
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Join Date: Mar 2001
Location: E BRUNSWICK N.J. USA,
Posts: 3,841
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Not Ranked
The motor is new, and not broken in
Scufty Scuf if you have a chance in the future a first name would be nice.  You have a new motor with no miles on it, the rings and not broken in yet to start. Check this first, start the motor and get to operation temps. Unhook the hose to the carb for the PCV. At idle is there any smoke coming from the hose? If no, rev the motor to 2,000 rpm if no, there is no blowby on the rings. This doesn't mean that the oil rings couldn't be installed wrong with the ends gapped in the same spot or too much gap or no gap causing too much vacuum in the motor. Hook a vacuum gauge to the motor at the pvc valve and rev the motor, see if there is any more the 1-2 pounds of pressure. I forgot to ask are you running gapless rings? if yes they will pull oil from anywhere and burn it. There is special needs for these rings. I had the same problem with a pont 400 motor and sucking oil from the motor, ended up changing to moly rings and the problem stopped. If all the valves have oil on them, it is a PCV problem if only a couple of cylinders have the oil I would look at the valve stem seals. It is real easy to damage them on installation. You need to use the sleeve to slide the seals on. I use oil, not the dry way. Who's seals are they? Are they teflon with the 2 springs on them? Mic the valve stem and make sure you have the right ones. You could put 3/8" on 11/32 stems and they work but leak down. Whats the size of the valve stems? What size is the guide boss? There are 4 combos for the FE heads. K.I.S.S. ( keep it simple silly) Scuf try not to over think this, again the motor is NOT broken in.  Mic the parts and if you have a couple of pictures this would help. Rick L. Ps is it possible that you have problems with the drains from the heads because the gaskets can block upto 1/2 the openings. I have seen this more than once. This would cause an oiling problem with the PCV. Which intake are you running? All this info helps narrow down the problem. We will fix it  
Last edited by RICK LAKE; 03-22-2008 at 04:22 PM..
Reason: fingers get spazzed Brain too fast for hands
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03-22-2008, 07:10 PM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,284
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Not Ranked
A leaking intake gasket on a FE can suck oil down on top of the intake valve.
__________________
Too many toys?? never!
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03-22-2008, 08:00 PM
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CC Member
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Join Date: Jun 2002
Location: Omaha,
NE
Cobra Make, Engine: ERA, 496 Tunnel Wedge
Posts: 132
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Not Ranked
Leaky intake gasket, or even the teflon seals.
I really dont like teflon seals, old tech, they are relatively hard and sorta fussy, even during install. They do seal well when they are new, almost too well, and then as soon as the guide gets a little wear, they cant overcome even the slightest movement and dont seal at all.
I only use postively located Viton now, soft viton wiper that stays soft
__________________
1994 ERA Cobra, 496 Genesis FE TW (new addition to the stable)
70 Mustang Fastback, EFI 489 FE TKO-600, too much to list
71 F-100 4x4 EFI 461 FE restomod
Bullock's Power Service, LLC
Concours and performance engines by appointment only
https://www.facebook.com/BullocksPowerService
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03-22-2008, 09:02 PM
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CC Member
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Join Date: Mar 2006
Location: San Marcos california,
CA
Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive
Posts: 1,601
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Not Ranked
Quote:
Originally Posted by undy
A leaking intake gasket on a FE can suck oil down on top of the intake valve.
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Yep it could be a loose intake too. |
03-22-2008, 10:11 PM
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CC Member
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Join Date: Jun 2006
Location: Calgary,
AB
Cobra Make, Engine: Butler Racing/427 side oiler
Posts: 371
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Not Ranked
you guys rock ...let me get more info and pics and report back !
Cheers
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03-23-2008, 06:06 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,284
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Not Ranked
Quote:
Originally Posted by CHANMADD
Yep it could be a loose intake too.
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Getting a good seal on the intake is one of the most problematic portions of a FE rebuild due to it's design. If a "more" conventional engine (SBF, 385 serries, SBC, BBC) has an intake leak it merely sucks air. In a lot of cases the leak goes undetected due to "bandaid" fuel and timing adjustments. Since the connection between the intake and the head on a FE is constantly bathed in oil a "leak", a angular torqued mis-match or a gasket pushed out during the assembly process will end up with an undue amount of oil coming down on top of the intake valve. Sometimes this only becomes evident with a hard right or left hand turn, depending what side of the intake is leaking. Poor oil return from the heads (especially with a H/V oil pump) will exasperate this problem too. This will cause the oil seals, as well as a leaking intake gasket, to be bathed in oil and subsequantly cause more oil consumption.
Dave |
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