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i know this has been discussed many times but can you just add a remote filter to a 54/235 engine with out any modification? simple answer please. ron

Please do asearch on this subject as there are many posts on it and even a Tech Tip.

The common factory remote filter is only a bypass filter.
Simple to add, even covered in your service manual.

did a search but wanted a more up to date answer, thank you!

The up to date answer is, as stated in other posts, you can convert the engine to full FLOW oil filtration at the time of rebuild by following the instructions in the tech tip.

Without modification you can only use a 'bypass filter' which, unlike full flow filtration, only filters about 10% of the oil.

The shortest answer to your question is:

Yes, you can add a bypass filter without modfying the engine. (this is what Grigg already said).

Is it true that a bypass will only filter 10% of the oil? You're breaking my heart!

I think 10% is an arbitrary number. All of the oil get filtered, just not every trip through the engine. I'm a believer that some trips through the filter are better than no filtration at all.

simple answer:bypass filter=yes....newer filter=no, not without modification

Ron,

Tiny's answer is important. In a by-pass system, all the oil gets filtered, eventually. The by-pass oil filter system works fine. A full-flow filtration system is probably better but is it worth the effort, unless you are setting up your old engine for high-performance operation?

As stated above, the simple answer to your question is: yes, can you just add a remote filter to a 54/235 engine without any modification.

Tim

Big rigs use both full flow and bypass filters for best protection.

Full flow filters only trap the 'larger' particles (20-40 microns and larger) to keep the oil flowing without pressure loss.
These filter systems require a bypass valve either on the filter or engine.
Prevents starving from lack of oil, when the filter gets clogged.

Bypass/remote filters take care of all the very small particles, the full flow filter ignores.
Takes only a few minutes for the entire oil to pass through the filter.
Oil flow is tapped and metered by a small hole at the output, hence the 10-20% amount of flow through it.

Best remote filter is the Frantz system using toilet paper as the element, trapping particles as small as 1 micron !
In business since the 50s with the exact same product.

My new 261 will use the full flow and Frantz filter, for longest engine life.

Even if you change your oil very often - I would recommend to always use clean filters and detergent oil with sufficient zinc content.

While you are at it - tap into the air cleaner bottom as the crankcase breather filter and use a closed valve cover.
The very common breather caps with foam are not very efficient and contaminate clean oil quickly.
The early slotted valve covers give zero protection.

I have trouble believing the toilet paper thing will catch 1 micron particles. I use a bypass setup with an Amsoil filter. The filter is guaranteed to catch particles to 2 micron absolute. Only 10% of the oil is going thru my filter at any one time but it is 200% cleaner than a full flow filter. I have spin on convenience,no pressure loss,and no block modifications.

Curt B.

What impresses me about the Frantz Filter system is the low-tech, cheap and effective principle and that they have been in business for decades with the same product.

Turns out TP filter efficiency is even higher than I remembered.

From the Frantz FAQ page:

It has the ability to remove any Solid Particle down to 1/10 of a micron (.000039")and up to 6 ounces of Water.

I bet there are tests/filter shoot-outs online, proving and disproving claims.
Only personal long-term use will show what works best.
Just good to see the primitive Frantz system on the market unchanged for decades.

Well you got me on the cheap part. An Amsoil spin on bypass filter cost me $40.00. Worth it to me as even soot is removed leaving the oil always looking like it was freshly changed.

Sounds like both products give very similar results.
The TP also removes water from the oil, which is very nice during the cold months.
If the amsoil filter is washable and reusable for life, the price is alright and beats the price of a new frantz system.
I bought mine NOS and very cheap.

I bought my first Frantz system in 1963 and installed it on my 1955 chevy 265. It worked beautifuly and I will be putting one on my 350 if I ever get it running.
http://www.wefilterit.com/orders/100/index.htm

thanks all. ron