Re: small block oil leak by front intake/timing chain cover
[Re: ef8Cuda340]
#1866723
07/08/15 04:59 PM
07/08/15 04:59 PM
|
Joined: Mar 2005
Posts: 1,373 Rancho Cucamonga, CA
D_C
pro stock
|
pro stock
Joined: Mar 2005
Posts: 1,373
Rancho Cucamonga, CA
|
You might try applying some (regulated) compressed air to the crankcase and spray some soapy water on suspected areas then watch for bubbles to detect the leaks. You will need to seal off breathers, PCV inlets, etc, and keep the air pressure fairly low or else you'll do damage to other seals.
It could be blow-by and excessive crankcase pressure that pushed out a seal. Have the rings seated yet? I like to run a Pan-Evac to reduce crankcase pressure, improve ring-seal and crankcase windage.
If it is the intake, perhaps New gaskets and some sealer in the problem area will solve it, or you may need to have parts machined to correct.
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: D_C]
#1866739
07/08/15 05:17 PM
07/08/15 05:17 PM
|
Joined: Sep 2006
Posts: 202 Texas
ef8Cuda340
OP
enthusiast
|
OP
enthusiast
Joined: Sep 2006
Posts: 202
Texas
|
Have the rings seated yet? Motor has about 200 miles since new.
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: ef8Cuda340]
#1866809
07/08/15 07:09 PM
07/08/15 07:09 PM
|
Joined: Jul 2003
Posts: 2,112 New Jersey, US of A
PlumCrazy73Dodge
top fuel
|
top fuel
Joined: Jul 2003
Posts: 2,112
New Jersey, US of A
|
I have had the same thing for a bit on a 318 I assumed it was the valve cover gaskets just dripping over to that flat spot. I have not swapped them out yet to see. I do not think its the intake cause you can see that seal pretty good although only true way to tell is leak down as above.
73 plumcrazy challenger - 318/904, edelbrock performer 600cfm carb, performer intake and cam. Eddy Alum. Heads 3.91 locker, Doug's headers, accurate ltd. exhaust 73 Cuda - Triple Black 340 4 speed MIKE
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: PlumCrazy73Dodge]
#1866916
07/08/15 09:50 PM
07/08/15 09:50 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
pull the intake & get a new gasket set & check it as some of the front/rear cork seals are too thick (tall) mockup the intake side gaskets & see what you have for gap (front/rear) & compare that to the cork gasket heights. with that resolved make sure you use some cement in the corners where the sideways ends of the cork gaskets meet the front/rear ends of the main side gaskets & as you know that includes the manifold corners right there also
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: ef8Cuda340]
#1866954
07/08/15 10:59 PM
07/08/15 10:59 PM
|
Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
|
master
Joined: Jan 2003
Posts: 9,826
las vegas
|
clean the area with some brake cleaner...put some RTV on your finger and squeeze it into the gap...
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: 70AARcuda]
#1866961
07/08/15 11:05 PM
07/08/15 11:05 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
clean the area with some brake cleaner...put some RTV on your finger and squeeze it into the gap... Definitely try that first
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: shorthorse]
#1867146
07/09/15 12:10 PM
07/09/15 12:10 PM
|
Joined: Sep 2006
Posts: 202 Texas
ef8Cuda340
OP
enthusiast
|
OP
enthusiast
Joined: Sep 2006
Posts: 202
Texas
|
...Might sound crazy but we had issues so we scrapped the front & rear gaskets and used "The Right Stuff" gasket maker. No leaks and easy clean up when removing the intake... Spoke with engine builder and he suggested the same thing you did. He says he'll do that if I take the car in, but I'll do all or some of the leak check suggestions listed here first. thanks!
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: ef8Cuda340]
#1867183
07/09/15 01:39 PM
07/09/15 01:39 PM
|
Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
|
the even worse problem is that with alot of the cork gaskets are too tall it keeps the intake from being pulled down properly so that over time the two front cooling ports at the head/intake junction start to leak. You want the clamping to be on the side gaskets not so much on the end corks. I agree on tossing the corks & using the right stuff. Just clean the metal sqeeky clean with brake kleen so it wont come undone
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: small block oil leak by front intake/timing chain cover
[Re: ef8Cuda340]
#1867187
07/09/15 01:44 PM
07/09/15 01:44 PM
|
Joined: Jan 2005
Posts: 3,699 Newport, Mi
Evil Spirit
master
|
master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
|
Nobody has mentioned yet one of the more common reasons for small block end seal leakage. Did you use the end rail gasket retaining/locating pins & is the intake drilled to receive them? Many aftermarket intakes don't have the receiver holes drilled in the end rails, so the intake sits on top of the pins and doesn't compress the end seals.
Personally, I do as others have mentioned and omit the end seals and use Right Stuff to seal the ends, or at least a premium silicon. I wipe the end rail areas with rubbing alcohol several times and dry thoroughly before applying sealant.
Free advice and worth every penny... Factory trained Slinky rewinder.........
|
|
|
|
|