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Wrenchy61 · 08-18-2014, 11:14 PM

For your own information and a basis for your comments about automotive air filters, I would suggest Googling "K&N air filter myths." Google will list several websites with a broad range of comments most of which are hilarious.

The website by the Nissan Infinity Car Owners Club, NICO has the results of the ISO 5011 particle filtration test on several different brands of filters including the K&N filter. Maybe these test results will be convincing or will you wear out your Model A engine by not applying a filter or by applying an inefficient filter! The choice is yours.

Henry Ford wanted to sell cars and keep them priced real low during the Great Depression. What better way than to cut corners than to eliminate the air filter and allow the engine to wear out before its time?

My 1931 Model A pickup that my Dad bought new in May of 1931 was not equipped with an air filter. Despite the fact the pickup was driven on paved roads, an overhaul was required at 60,000 miles. New rings, valves. and knurling of the pistons was necessary. Knurling of the piston skirts was implemented to carry an oil film that would prevent piston slap in a worn cylinder bore and a worn skirt.

My '31 pickup has a conventional Air Maze paper filter fastened to the inlet of the carburetor. I am not worried about restriction, running rich, or having a fire. All these can be compromised with by a skilled mechanic.

Remember, poor air filtration allows particulate to contaminate the oil since the A engine has no filtration.

I watched an experienced auto mechanic who must have done a sloppy job on overhauling a Blue Flame Chevrolet six cylinder take a a tablespoon of BonAmi and slowly feed it in through the carburetor while the engine was running at about quarter throttle. In no time at all, the engine quit smoking as the piston rings were "seated" to the cylinder walls. Shocking? This same action occurs when driving a vehicle with poor filtration or no filtration of the combustion air of an engine. BonAmi is advertised as a no scratch cleaner.

If you don't believe any of this, conduct your own test. Run your Model A with and without an air filter for 5000 miles. Take an oil sample of each to your local Detroit Engine Dealer and have them do an oil analysis. You should be a believer!

If you still aren't a believer of all of the above, watch the film. "The Air You Breath". Then you Will be a believer.

08-18-2014, 11:14 PM	#69
Wrenchy61 Junior Member Join Date: Jun 2014 Posts: 21	Re: Air filter for Model A For your own information and a basis for your comments about automotive air filters, I would suggest Googling "K&N air filter myths." Google will list several websites with a broad range of comments most of which are hilarious. The website by the Nissan Infinity Car Owners Club, NICO has the results of the ISO 5011 particle filtration test on several different brands of filters including the K&N filter. Maybe these test results will be convincing or will you wear out your Model A engine by not applying a filter or by applying an inefficient filter! The choice is yours. Henry Ford wanted to sell cars and keep them priced real low during the Great Depression. What better way than to cut corners than to eliminate the air filter and allow the engine to wear out before its time? My 1931 Model A pickup that my Dad bought new in May of 1931 was not equipped with an air filter. Despite the fact the pickup was driven on paved roads, an overhaul was required at 60,000 miles. New rings, valves. and knurling of the pistons was necessary. Knurling of the piston skirts was implemented to carry an oil film that would prevent piston slap in a worn cylinder bore and a worn skirt. My '31 pickup has a conventional Air Maze paper filter fastened to the inlet of the carburetor. I am not worried about restriction, running rich, or having a fire. All these can be compromised with by a skilled mechanic. Remember, poor air filtration allows particulate to contaminate the oil since the A engine has no filtration. I watched an experienced auto mechanic who must have done a sloppy job on overhauling a Blue Flame Chevrolet six cylinder take a a tablespoon of BonAmi and slowly feed it in through the carburetor while the engine was running at about quarter throttle. In no time at all, the engine quit smoking as the piston rings were "seated" to the cylinder walls. Shocking? This same action occurs when driving a vehicle with poor filtration or no filtration of the combustion air of an engine. BonAmi is advertised as a no scratch cleaner. If you don't believe any of this, conduct your own test. Run your Model A with and without an air filter for 5000 miles. Take an oil sample of each to your local Detroit Engine Dealer and have them do an oil analysis. You should be a believer! If you still aren't a believer of all of the above, watch the film. "The Air You Breath". Then you Will be a believer.