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Username Post: distributor oil leak        (Topic#276989)
abyars 
Contributor
Posts: 630
abyars
Age: 41
Loc: Decatur, Alabama
Reg: 06-01-04
02-25-12 08:11 PM - Post#2195244    

I have a 350 with an edelbrock performer eps manifold. I have a late 60's distributor. It's been converted to HEI by Dave's Smallbody HEI's.

My problem is I cannot keep oil from leaking at the point the distributor meets the manifold. I used a gasket. I even pulled the distributor once and put on a new gasket.

I checked the area behind the carb to day and it's covered in oil again. I have to degrese the area once a year.

Any ideas on how in the world to prevent this leak?
Anthony - 1955 4 door Sedan

http://www.picturetrail.com/gallery/view?p=999&am p...


 
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cnbell 
"11th Year" Silver Supporting Member
Posts: 8894
cnbell
Loc: So Cal
Reg: 04-14-04
02-26-12 07:23 AM - Post#2195351    
    In response to abyars

I had the same problem with an aluminum manifold and aftermarket distributor. I used two gaskets and the leak stopped.
Craig

http://www.picturetrail.com/cnbell


 
abyars 
Contributor
Posts: 630
abyars
Age: 41
Loc: Decatur, Alabama
Reg: 06-01-04
02-26-12 12:01 PM - Post#2195459    
    In response to cnbell

That's a good idea.
Anthony - 1955 4 door Sedan

http://www.picturetrail.com/gallery/view?p=999&am p...


 
george88gta 
"10th Year" Silver Supporting Member
Posts: 1757
george88gta
Loc: new york
Reg: 04-23-03
02-26-12 12:37 PM - Post#2195470    
    In response to abyars

One thing to verify, is the correct seating of the distributor. With the clamp a little snug, you should be able to move the rotor up and down a few thousandths. If the rotor is not able to move, then you have a condition where the drive gear to oil pump drive are out of spec. This can cause the distrinutor to sit up a bit high in the manifold and allowing oil to leak. If you do have a bind, check the drive gear to distributor housing clearance. If this is good, then you will probably have to add spacers between the distributor and the intake ( similar to the post where he added an extra gasket). Bottom line, is you need some vertical movement in the rotor and shaft with the distributor clamp tightened down. If there isnt any vertical movement, you need to get that fixed.

 
abyars 
Contributor
Posts: 630
abyars
Age: 41
Loc: Decatur, Alabama
Reg: 06-01-04
02-27-12 05:19 PM - Post#2196012    
    In response to george88gta

If I find I need a shim can I find them at the parts store? Does summit carry a shim? If I install a shim would I use form a gasket and seal it to the intake then use a regular gasket between the shim and the distributor?
Anthony - 1955 4 door Sedan

http://www.picturetrail.com/gallery/view?p=999&am p...


 
george88gta 
"10th Year" Silver Supporting Member
Posts: 1757
george88gta
Loc: new york
Reg: 04-23-03
02-27-12 05:55 PM - Post#2196025    
    In response to abyars

Yes, Summit carries both drive gear shims and distributor body to intake shims ( made by Moroso). You dont use any sealant, the shims and a gasket will seal up the intake to distributor gap. Here is some info ( stolen from Grumpyvette), it gives you a place to start.

"IF YOUR DISTRIBUTOR LEAKS OIL AROUND THE BASE GASKET..
it seems the distributor is not seating fully against the intake ring gasket and the distributor to oil pump drive is suspected of being a bit to long, there should be about .050 slack MINIMUM between the oil pump drive shaft and the distributor gear

Ive used moly grease for decades as a internal shaft lube


don,t confuse distributor end cam gear clearance (usually set at .007-.010) (how far the distributor gear can move on the distributor shaft and the clearance between the end of the oil pump drive drive shaft and the inside of the gear drive (usually set at .050) set when the distributor seats over the shaft and is clamped in the intake manifold."



Edited by george88gta on 02-27-12 06:14 PM. Reason for edit: No reason given.

 
abyars 
Contributor
Posts: 630
abyars
Age: 41
Loc: Decatur, Alabama
Reg: 06-01-04
02-27-12 06:30 PM - Post#2196045    
    In response to george88gta

Thanks
Anthony - 1955 4 door Sedan

http://www.picturetrail.com/gallery/view?p=999&am p...


 
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