The Ford Barn

Adam/Mill Valley CA · 06-17-2021, 05:16 PM

Can any of the distributor experts confirm how the front and rear bushings for a 37-41 helmet distributor (with 68- advance unit) receive lubrication? I understand the rear bushing receives oil from the timing cover, there is a groove in the bushing seat that leads to two holes on the bottom of the distributor, but no hole in the bushing itself. I read somewhere that the bushing material is porous enough that oil goes through it, but that's a new concept for me. Similarly for the front bushing, there is no direct communication between the oil cup/feed tunnel and the inside of the bushing-is it the same idea?
Any good tips for removing the front bushing? The rear taps out easily.
Thanks,
Adam

Charlie ny · 06-17-2021, 10:00 PM

Porous bronze bushings, invented by Walter P Chrysler, absorb and transmit lubrication.

Even mild heat causes the 'cast in' lubrication to flow from the bushing to the rotor
shaft.
Charlie ny

Lawrie · 06-18-2021, 12:19 AM

to remove the front bushing tap it 1/2 NC ( I think)and thread in a long bolt or threaded rod, slip a plate with a hole in it over the body and the bolt and then pull the bush out easy.
Lawrie

BUBBAS IGNITION · 06-18-2021, 07:43 AM

Quote:

Originally Posted by Charlie ny

Porous bronze bushings, invented by Walter P Chrysler, absorb and transmit lubrication.

Even mild heat causes the 'cast in' lubrication to flow from the bushing to the rotor
shaft.
Charlie ny

AMEN CHARLIE !!!
Hardly EVER see a damaged bushing, have hundreds of cores on hand , they just seem to last forever. Every now and then you see a damaged front bushing but installing and fitting a new bushing is a real pain , in most cases i just use another core with a good busing .

Adam/Mill Valley CA · 06-18-2021, 07:51 AM

Thanks so much for the replies!
Adam

Adam/Mill Valley CA · 06-18-2021, 12:14 PM

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The clearance for the advance unit journals at the front bushing mic's out at .0015 and at the rear bushing .0025 does that seem acceptable?

VeryTangled · 06-18-2021, 02:54 PM

Quote:

Originally Posted by Adam/Mill Valley CA

I read somewhere that the bushing material is porous enough that oil goes through it, but that's a new concept for me. Thanks, Adam

If we stop learning we stop living!

06-17-2021, 05:16 PM	#1
Adam/Mill Valley CA Senior Member Join Date: May 2010 Location: Mill Valley,CA Posts: 275	Helmet distributor bushing lubrication Can any of the distributor experts confirm how the front and rear bushings for a 37-41 helmet distributor (with 68- advance unit) receive lubrication? I understand the rear bushing receives oil from the timing cover, there is a groove in the bushing seat that leads to two holes on the bottom of the distributor, but no hole in the bushing itself. I read somewhere that the bushing material is porous enough that oil goes through it, but that's a new concept for me. Similarly for the front bushing, there is no direct communication between the oil cup/feed tunnel and the inside of the bushing-is it the same idea? Any good tips for removing the front bushing? The rear taps out easily. Thanks, Adam __________________ 1936 pickup, stock, black 1965 Mustang coupe 289/4bbl, black/red 1971 Alfa Romeo GTV 1750 coupe, dark red/tan 1970 911E 2.2 litre dark blue/black 1968 BMW R50/2 US, black (m'cycle) 1967 Triumph TR6R , sea foam/cream (m'cycle) 2022 Royal Enfield Interceptor 650 red (m'cycle) 1974 Honda CB750 red (m'cycle) 2000 Kawasaki W650 blue/silver (m'cycle)

06-17-2021, 10:00 PM	#2
Charlie ny BANNED Join Date: May 2010 Posts: 3,019	Re: Helmet distributor bushing lubrication Porous bronze bushings, invented by Walter P Chrysler, absorb and transmit lubrication. Even mild heat causes the 'cast in' lubrication to flow from the bushing to the rotor shaft. Charlie ny

06-18-2021, 12:19 AM	#3
Lawrie Senior Member Join Date: May 2010 Location: Qld, Australia Posts: 4,215	Re: Helmet distributor bushing lubrication to remove the front bushing tap it 1/2 NC ( I think)and thread in a long bolt or threaded rod, slip a plate with a hole in it over the body and the bolt and then pull the bush out easy. Lawrie

06-18-2021, 07:51 AM	#5
Adam/Mill Valley CA Senior Member Join Date: May 2010 Location: Mill Valley,CA Posts: 275	Re: Helmet distributor bushing lubrication Thanks so much for the replies! Adam __________________ 1936 pickup, stock, black 1965 Mustang coupe 289/4bbl, black/red 1971 Alfa Romeo GTV 1750 coupe, dark red/tan 1970 911E 2.2 litre dark blue/black 1968 BMW R50/2 US, black (m'cycle) 1967 Triumph TR6R , sea foam/cream (m'cycle) 2022 Royal Enfield Interceptor 650 red (m'cycle) 1974 Honda CB750 red (m'cycle) 2000 Kawasaki W650 blue/silver (m'cycle)

06-18-2021, 12:14 PM	#6
Adam/Mill Valley CA Senior Member Join Date: May 2010 Location: Mill Valley,CA Posts: 275	Re: Helmet distributor bushing lubrication Sponsored Links (Register now to hide all advertisements) The clearance for the advance unit journals at the front bushing mic's out at .0015 and at the rear bushing .0025 does that seem acceptable? __________________ 1936 pickup, stock, black 1965 Mustang coupe 289/4bbl, black/red 1971 Alfa Romeo GTV 1750 coupe, dark red/tan 1970 911E 2.2 litre dark blue/black 1968 BMW R50/2 US, black (m'cycle) 1967 Triumph TR6R , sea foam/cream (m'cycle) 2022 Royal Enfield Interceptor 650 red (m'cycle) 1974 Honda CB750 red (m'cycle) 2000 Kawasaki W650 blue/silver (m'cycle)