Evaluation of Purflux Oil Filter (Ferrari PN 218429 used on 599) for use on TR/512TR

The Purflux 218429 Oil Filter is a very high-quality construction, full-flow filter for non-inverted applications that don’t require an anti-drainback valve nor standpipe. It does incorporate a high-quality, resettable, spring-loaded Bypass Valve. It is a very compact overall size that (like the Purflux 197654) has its filter media material pleated into a more complex 3D pattern (vs the usual 2D pattern of most oil filters) in order to maximize the amount of filter media in the small overall size.

Here are some details/facts/photos:

OUTER DIMENSIONS:
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FILTER MEDIA – As mentioned above, the Filter Media in the Purflux 218429 is pleated in a 3D pattern rather than the typical 2D pattern. The 3D pattern (cleverly) gets more Filter Media area into the same volume vs the typical 2D pattern:
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The 218429 Filter Media Cartridge is a few mm longer than the 197654 Filter Media Cartridge, but they are so similar (same diameter, same pleating pattern, same bypass valve, and has a feature needed only for a filter with a standpipe) that it would not surprise me at all if both filters used the exact same Filter Media Cartridge (it has been so many years since I looked at the 197654 filter that the internal design may have been tweaked since then):
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BYPASS VALVE – Exact same, high-quality, resettable, spring-loaded design like on the Purflux 197654. The movable plunger has a rubber coating on top so it’s fully sealed when closed with zero leakage. They did eliminate the separate metal screen that sits atop the 197654 bypass valve, but they also added some “bumps” to the end cap with the Bypass Valve (which I believe are there so that if the Filter Media Cartridge got shifted and pushed up against the inside of the Outer Case there would still be an open flow path for the oil to the Bypass Valve):
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Here’s the assembly sequence:

Step 1 – Front Plate
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Step 2 – Conical Rubber Gasket
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Step 3 – Filter Media Cartridge with Bypass Valve
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Step 4 – Coil Spring
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Step 5 – Outer Case
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Here are the numbers comparing the Purflux 218429 to the UFI 2319202 used on the TR. Even though the Outer Case is slightly thinner on the 218429, for the same internal pressure, the hoop stress in the Outer Case is actually lower on the 218429 due to the smaller Outer Case diameter of the 218429:
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My Comments/Observations/Conclusions (use at your own risk! ):

1. In the past, (automobile and oil filter) manufacturers were very conservative about the debris capacity that the oil filter needed to provide. This resulted in the rather large size oil filters for TR and 512TR and using two oil filters on the Boxers. In the past couple of decades, compactness has become a much more important thing so manufacturers have gone to much smaller oil filters. This 218429 oil filter that I cut open had just a very small amount of fine metal wear debris inside, and the only functional reason for changing it was to remove the old oil that was trapped inside it rather than anything else. I’m convinced that, for providing good filtering performance, it could have been used for a much longer time.

2. If the Purflux 218429 oil filter is OK for the 6.0L 599 engine, it’s OK for using on the 5.0L TR or 512TR engines.

3. If the Purflux 218429 oil filter is OK for use on the 5.0L TR or 512TR engines, the Baldwin B255 would also be OK for use on the 5.0L TR or 512TR engines.

My thanks to Chris (4heid) for providing and sending this Purflux 218429 sample to me for analysis.

 

Only if someone sends me a 512TR oil filter sample . However, I don't expect any big difference between the TR oil filter and the 512TR oil filter as they shortened the 512TR filter for better compactness (so it would only have less filter media inside than the TR filter).

You've misread that -- the Purflux 197654 and the Purflux 218429 have the exact same bypass valve. The TR UFI 2319202 filter does not have a bypass valve.

 

Because I had first done a similar analysis of the Purflux 197654 oil filter:

https://www.ferrarichat.com/forum/threads/evaluation-of-purflux-oil-filter-ferrari-pn-197654-as-used-on-348-355-360-f50.357549

I was just noting that the construction of 218429 shared a lot of similarity with the construction of 197654 (and that they might share many parts) -- 197654 has nothing to do with 218429 being used on a TR/512TR.

 

I didn't measure that, and agree that, the more filter material area, the more debris that a filter can hold before the flow is impeded. My point is that the debris capacity needed is not very large, and "If the Purflux 218429 oil filter is OK for the 6.0L 599 engine, it’s OK for using on the 5.0L TR or 512TR engines" -- can you explain why that is not a reasonable conclusion? Do you think that a TR/512TR engine generates a lot more debris than a (larger) 599 engine?

 

No, and I can't see why an oil filter that is OK for the 6.0L 599 engine would not be OK for the 5.0L TR/512TR engines. The oil pressure gauge in the dash measures the oil pressure at the outlet of the oil filter so, if something went wrong with the flow thru the filter, you would see a drop in pressure on the gauge. The person who sent me this 218429 filter removed it from his TR, and didn't report any problems; however, I'll repeat: these are "My Comments/Observations/Conclusions (use at your own risk!).

 

Please don't waste a new 512TR oil filter. Just let me know when you (or anyone else who would like to help out) have a used one available -- then we can hook up (there's no rush).

 

I've seen that SGP TR oil filter on the SuperformanceUK website, but know nothing about it.