The Ford Barn

Jason in TX · 04-07-2012, 09:05 PM

Hi. Firing up a good 1940 flathead. Before it ran fine. I changed the front pulley to a double belt and put my McCullough supercharger on it. Now it's puking out oil from the front bottom road draft tube.

We did pull the engine a couple times and the tail hung down pretty steeply and some oil came out of the bellhousing but I just thought it was because of the steep angle. And advise?

G.M. · 04-07-2012, 09:12 PM

Sounds like air pressure from the charger is putting pressure in the pan?? See if you have air comming out of the dipstick or oil filler. G.M.

Jason in TX · 04-07-2012, 09:19 PM

Another factoid. The supercharger fills up with oil from the oil line on the block, and then returns to the valve valley through a brass fitting that I drilled into the top center of the intake about 1.5 inches behind the generator mounting pad. Could I have drilled in the wrong spot and the oil is dumping right over the road draft tube in the block? Is that possible?

Mike in AZ · 04-07-2012, 09:26 PM

your factoid about drilling the oil return hole could be what is causing your problem....just like you think....just my guess....Mike

Jason in TX · 04-07-2012, 10:01 PM

BINGO!!!!! The intake gasket is a solid centered gasket with only holes for the road draft tube, etc. My oil return line was dumping right on top of the solid gasket and then out the road draft tube. Basically the same idea as putting Seran Wrap on a toilet seat!

Cutting out some of the front center of the Gasket right now and then I'll report back.

26 lakes · 04-07-2012, 10:44 PM

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It may have a 24 hour flu bug. I know you didn't need the humor.

Mike in AZ · 04-07-2012, 10:59 PM

cool...hope that will fix it....maybe a shield to divert the flow??....Mike

Barry WNY · 04-08-2012, 05:27 AM

I put my oil filter return line in the fuel pump stand since my pan dod not have a fitting, works OK.

G.M. · 04-08-2012, 09:05 AM

Oil filter return is OK through the fuel pump or distributor bolt but the blower bearings need a LARGE flow of oil to and from them. G.M.

Jason in TX · 04-08-2012, 01:11 PM

That was the fix. No more BP oil spills under the car!

KGS · 04-10-2012, 07:13 AM

Jason, Is it back in the car? How's it run? Ken

04-07-2012, 09:05 PM	#1
Jason in TX Senior Member Join Date: May 2010 Location: ⓉⒺXⒶⓈ Posts: 2,047	Oil puking out of road draft tube on 1940 flathead Hi. Firing up a good 1940 flathead. Before it ran fine. I changed the front pulley to a double belt and put my McCullough supercharger on it. Now it's puking out oil from the front bottom road draft tube. We did pull the engine a couple times and the tail hung down pretty steeply and some oil came out of the bellhousing but I just thought it was because of the steep angle. And advise? __________________ -------------- Drive it like you know how to fix it! DMAFC / OILERS CC-MC

04-07-2012, 09:12 PM	#2
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: Oil puking out of road draft tube on 1940 flathead Sounds like air pressure from the charger is putting pressure in the pan?? See if you have air comming out of the dipstick or oil filler. G.M. __________________ www.fordcollector.com

04-07-2012, 09:19 PM	#3
Jason in TX Senior Member Join Date: May 2010 Location: ⓉⒺXⒶⓈ Posts: 2,047	Re: Oil puking out of road draft tube on 1940 flathead Another factoid. The supercharger fills up with oil from the oil line on the block, and then returns to the valve valley through a brass fitting that I drilled into the top center of the intake about 1.5 inches behind the generator mounting pad. Could I have drilled in the wrong spot and the oil is dumping right over the road draft tube in the block? Is that possible? __________________ -------------- Drive it like you know how to fix it! DMAFC / OILERS CC-MC

04-07-2012, 09:26 PM	#4
Mike in AZ Senior Member Join Date: May 2010 Location: Waddell, AZ Posts: 2,540	Re: Oil puking out of road draft tube on 1940 flathead your factoid about drilling the oil return hole could be what is causing your problem....just like you think....just my guess....Mike

04-07-2012, 10:01 PM	#5
Jason in TX Senior Member Join Date: May 2010 Location: ⓉⒺXⒶⓈ Posts: 2,047	Re: Oil puking out of road draft tube on 1940 flathead BINGO!!!!! The intake gasket is a solid centered gasket with only holes for the road draft tube, etc. My oil return line was dumping right on top of the solid gasket and then out the road draft tube. Basically the same idea as putting Seran Wrap on a toilet seat! Cutting out some of the front center of the Gasket right now and then I'll report back. __________________ -------------- Drive it like you know how to fix it! DMAFC / OILERS CC-MC

04-07-2012, 10:44 PM	#6
26 lakes Senior Member Join Date: May 2010 Location: Lee's Summit, Mo Posts: 338	Re: Oil puking out of road draft tube on 1940 flathead Sponsored Links (Register now to hide all advertisements) It may have a 24 hour flu bug. I know you didn't need the humor.

04-07-2012, 10:59 PM	#7
Mike in AZ Senior Member Join Date: May 2010 Location: Waddell, AZ Posts: 2,540	Re: Oil puking out of road draft tube on 1940 flathead cool...hope that will fix it....maybe a shield to divert the flow??....Mike

04-08-2012, 05:27 AM	#8
Barry WNY Senior Member Join Date: May 2010 Location: Sinclairville NY Posts: 230	Re: Oil puking out of road draft tube on 1940 flathead I put my oil filter return line in the fuel pump stand since my pan dod not have a fitting, works OK.

04-08-2012, 09:05 AM	#9
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: Oil puking out of road draft tube on 1940 flathead Oil filter return is OK through the fuel pump or distributor bolt but the blower bearings need a LARGE flow of oil to and from them. G.M. __________________ www.fordcollector.com

04-08-2012, 01:11 PM	#10
Jason in TX Senior Member Join Date: May 2010 Location: ⓉⒺXⒶⓈ Posts: 2,047	Re: Oil puking out of road draft tube on 1940 flathead That was the fix. No more BP oil spills under the car! __________________ -------------- Drive it like you know how to fix it! DMAFC / OILERS CC-MC

04-10-2012, 07:13 AM	#11
KGS Senior Member Join Date: May 2010 Location: Schooley's Mountain Posts: 530	Re: Oil puking out of road draft tube on 1940 flathead Jason, Is it back in the car? How's it run? Ken