Oil pump, full flow, help please...

[bschulze]

Do you know if any one makes a Motor City Flathead style full flow oil filter kit?

Goller's lists one on their web site but no answer.

Flathead Speed and Machine also lists an improved model but again no response.

Can you help?

I'm thinking of forgetting about filtration and just changing the oil a lot. The stock part time filters don't interest me a lot.

Thanks, Bob in Council Bluffs Iowa

[tubman]

I would rethink my thoughts on the original bypass filters. With the use and maintenance the great majority of these cars receive today, they are actually the best filtration option. Now if you're going to do some serious racing or off-roading, it may make some sense to go to the complications of a full (or partial full) flow system, but they are completely unnecessary for ordinary use.

[bschulze]

Still looking for a full flow oil filter/oil pump as was sold by :

Motor City Flathead,
Flathead Speed and Machine,
Goller's Hot Rods.

These outlets seem inactive.

Have you heard of anyone else picking up the flag and offering this conversion?

Thank you,
Bob Schulze, Council Bluffs, Iowa

[tubman]

You may want to consider why such setups are so difficult to find.

[ford38v8]

This is another subject that has been discussed many times here on the Barn, with opinions all over the place. One fact that is not debated is the comparative effectiveness of the two different systems, particularly with the use of modern lubricants:
An original bypass system will filter 90% of your oil in a 15 minute drive, the time it takes to fully warm up your engine from a cold start.
A full flow system (or the easier 95% conversion which provides filtered oil to all but the rear main bearing), will never, I repeat NEVER, filter the finest of particles (I forget the micron value) that a bypass system provides.
In addition to that fact is the existence of a bypass valve within all spin-on filters, purposely designed to release (bypass) unfiltered oil when oil pressure rises too high within the filter.
A bypass filter system has no such excess pressure valve, and will simply slow the flow if the filter becomes clogged, which has no effect on oil delivery to bearings, because, of course, it is a bypass system.

[bschulze]

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Still looking for a 100% full flow oil filter, Motor City Flathead (MCF) style.

I'm not sure how this system can only be 95%? I put one of the late Mark Kirby's kits, MCF, in my 46 Sedan Coupe. (1953 Mercury 3-3/8 bore engine)

As I recall, the engine oil was picked up from the oil pan by the oil pump, directed out the side of the pan to a spin on oil filter, then to the back of the block into the oiling system. Simple and neat, 100%, and I liked it a bunch. Clean filtered oil to my priceless flat head V8.

What's not to like.

Thank you,
Bob Schulze, Council Bluffs, Iowa
[email protected]

[Ronnieroadster]

Unfortunately no one is offering anything like that conversion. The only hope you have is if someone has one of the MCF kits they never used and offers it for sale.
Ronnieroadster

[ford38v8]

Bob, you are correct, and I edited my post. The Kirby system routes directly from the pump rather than above the rear main. Good catch.

[flatjack9]

If the bypass system is so good, why do all modern engines use a full flow system?

[tubman]

Originally Posted by flatjack9

If the bypass system is so good, why do all modern engines use a full flow system?

Notice that I said "With the use and maintenance the great majority of these cars receive today". The maintenance is almost anal-retentive, oil change intervals are usually in the hundreds (rather than thousands) of miles, they are stored under impeccable conditions, not used in any kind of foul weather, etc. etc. etc. Contrast this to the average daily driver that is abused, ignored, and yet expected to soldier on through all kinds of conditions. Different methods for different conditions. I also believe that most over the road semi-trucks use both bypass and full flow filtration. I still believe that the finer filtration provided is worth it in this particular case.