Tech: Cleaning up the oil
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Tech: Cleaning up the oil
Cleaning Up the Oil
Installing a Canton/Mecca cartridge oil filter
by Adrian Teo
06/01/2002
Conventional Filter Limitations
Most oil filters, even the larger Fram HP race filters, flow up to 10gpm (gallons per minute) when new and this falls off as the filter gets clogged. However a Honda engine uses a smaller oil filter and it has an even lower flow rate, since the effective surface area of the filter element is smaller. However, at 7000 rpm, a healthy B-series engine pumps over 70 lpm (liters per minute) of oil through the oil system. That works out to over 17gpm, so how does the regular filter work in these conditions?
The typical automotive oil filter features a pressure sensitive bypass valve. This bypass valve opens up when the oil flow rate increases beyond what the filter is capable of handling. This allows unfiltered oil to flow around in the oil system, increasing the wear rate of the engine.
I found the Canton/Mecca (C/M) oil filters some time ago, but they were impractial to install due to the tight spaces behind the engine. However after I installed the oil cooler and remote oil filter, this allowed me to install the C/M race oil filter almost anywhere.
The C/M Oil Filter
The C/M filter is a cartridge-type oil filter and is commonly used in IMSA, SCCA, CART and IRL engines, and it's a favourite for many BMW enthusiasts. The key feature in the C/M filters is that it does not feature a bypass valve because of it's high flow rate (40gpm@1psi drop for the 4 5/8" filter). This means that 100% filtered oil is always delivered to the engine. On top of that, the C/M filter element traps particles down to 8 microns in a synthetic matrix. Most conventional filters use a paper element which traps elements down to 15microns or so. The filter is rated to have a 10,000-mile life, and it drops oil pressures by only 3-4 psi when it's "clogged". Combined with an oil pressure gauge, this becomes a good indicator when to replace the filter.
The C/M filter is made out of extruded aluminium with CNC machined top and bottom caps. Burst pressure for the filter is rated at 1000psi, that way more than any filter I know of. The price of the filter is $75 and it includes a mounting clamp/strap and one filter element. New elements cost $13 each, compared to FRAM HP-1 race filters (arounr $10 each) they were reasonably priced and last twice as long.
Installation
Installing the filter in the car was an easy task as it already had a remote oil filter. 10-AN fittings (left over from a previous project) were installed on the new filter and it was ready to go into the car.
First, the remote il filter was disconnected and then the mounting new strap/clamp was mounted to the same frame rail. The oil lines connected without any hassle.
C/M filter with 10AN connectors installed
C/M filter replacement seal kit
Old remote filter mount with FRAM HP1/TG8 Filter
C/M Filter Installed
Modifications
To retain the oil pressure sensor, an 8.2mm hole was drilled onto the body of the filter and tapped to 1/8" NPT. It was relatively easy to tap the aluminum body of the filter. this allows the pressure to be monitored, giving an indication of the health of the filter cartridge.
The oil pressure sensor hole is drilled to allow the oil sensor to be installed on the side of the filter body
Another angle of the oil pressure sensor
With everthing installed, and the engine running, the pressure is at a static 30psi (measured after the filter) at 1500 rpm and it rises up to 75psi (warm). The pressure is governed by the oil pressure regulator/valve at the oil pump.
Resource List
* Canton/Mecca
(http://www.cmfilters.com)
(203)481-9460
info@cmfilters.com
* Hybrid Garage - the official Hybrid Store
(http://store.hybridgarage.com)
(480)TEAM-HGR
info@hybridgarage.com
Source: http://tech.hybridgarage.com/tech/cmfilter/index.html
Installing a Canton/Mecca cartridge oil filter
by Adrian Teo
06/01/2002
Conventional Filter Limitations
Most oil filters, even the larger Fram HP race filters, flow up to 10gpm (gallons per minute) when new and this falls off as the filter gets clogged. However a Honda engine uses a smaller oil filter and it has an even lower flow rate, since the effective surface area of the filter element is smaller. However, at 7000 rpm, a healthy B-series engine pumps over 70 lpm (liters per minute) of oil through the oil system. That works out to over 17gpm, so how does the regular filter work in these conditions?
The typical automotive oil filter features a pressure sensitive bypass valve. This bypass valve opens up when the oil flow rate increases beyond what the filter is capable of handling. This allows unfiltered oil to flow around in the oil system, increasing the wear rate of the engine.
I found the Canton/Mecca (C/M) oil filters some time ago, but they were impractial to install due to the tight spaces behind the engine. However after I installed the oil cooler and remote oil filter, this allowed me to install the C/M race oil filter almost anywhere.
The C/M Oil Filter
The C/M filter is a cartridge-type oil filter and is commonly used in IMSA, SCCA, CART and IRL engines, and it's a favourite for many BMW enthusiasts. The key feature in the C/M filters is that it does not feature a bypass valve because of it's high flow rate (40gpm@1psi drop for the 4 5/8" filter). This means that 100% filtered oil is always delivered to the engine. On top of that, the C/M filter element traps particles down to 8 microns in a synthetic matrix. Most conventional filters use a paper element which traps elements down to 15microns or so. The filter is rated to have a 10,000-mile life, and it drops oil pressures by only 3-4 psi when it's "clogged". Combined with an oil pressure gauge, this becomes a good indicator when to replace the filter.
The C/M filter is made out of extruded aluminium with CNC machined top and bottom caps. Burst pressure for the filter is rated at 1000psi, that way more than any filter I know of. The price of the filter is $75 and it includes a mounting clamp/strap and one filter element. New elements cost $13 each, compared to FRAM HP-1 race filters (arounr $10 each) they were reasonably priced and last twice as long.
Installation
Installing the filter in the car was an easy task as it already had a remote oil filter. 10-AN fittings (left over from a previous project) were installed on the new filter and it was ready to go into the car.
First, the remote il filter was disconnected and then the mounting new strap/clamp was mounted to the same frame rail. The oil lines connected without any hassle.
C/M filter with 10AN connectors installed
C/M filter replacement seal kit
Old remote filter mount with FRAM HP1/TG8 Filter
C/M Filter Installed
Modifications
To retain the oil pressure sensor, an 8.2mm hole was drilled onto the body of the filter and tapped to 1/8" NPT. It was relatively easy to tap the aluminum body of the filter. this allows the pressure to be monitored, giving an indication of the health of the filter cartridge.
The oil pressure sensor hole is drilled to allow the oil sensor to be installed on the side of the filter body
Another angle of the oil pressure sensor
With everthing installed, and the engine running, the pressure is at a static 30psi (measured after the filter) at 1500 rpm and it rises up to 75psi (warm). The pressure is governed by the oil pressure regulator/valve at the oil pump.
Resource List
* Canton/Mecca
(http://www.cmfilters.com)
(203)481-9460
info@cmfilters.com
* Hybrid Garage - the official Hybrid Store
(http://store.hybridgarage.com)
(480)TEAM-HGR
info@hybridgarage.com
Source: http://tech.hybridgarage.com/tech/cmfilter/index.html
