Cartridge type oil filter for a Model 99

I mounted mine just above the front engine plates using a lightweight scaffolding clamp. After a few years, I got rid of the thing and reverted to standard. The reason? The one on my wife's A10 had an oil line come adrift from the filter and siezed. I reckon it's just as well to stick to the standard set-up and regular oil changes. Gordon.

Gordon,

Is the filter piped into the supply or return line??

Thanks in advance

Tony

A Commando filter and mount would seem the way to go if you want to do this. The filter is always in the return line.

Norvil makes a set up for the pre commando bikes & includes a commando filter mount & all hardware needed. See: http://www.norvilmotorcycle.co.uk/techtalk13.htm

Skip Brolund

Skip,

Excellent, thank you for the link and info

Tony

I hadn't considered this before, as I do not intend fitting a filter, but, why fit it on the return line? I would have thought it better to supply the engine with clean, filtered, oil. No criticism, just asking! John.

John, this is an easy one and a common misunderstanding. If a filter in the return line becomes blocked, oil leaks will be the result, and the rider can stop and investigate. If a filter in the feed line becomes blocked, the engine will be starved of oil and seize. Any particles to be filtered out will come from the engine, so a filter in the return line will filter them out before the oil is returned to the tank and re-circulated.

On this same topic - I fitted a filter some years ago. Two issues that annoy me.

One is the LONG time it takes to see any oil returning to the tank after re-assembling an engine. Logic dictates that the oil gets in where it is needed very quickly but there is a worryingly long time to wait for evidence that it's all going where it should....and all that time there is nothing going to the valve gear. Although until thelater singles nothing apart from oil mist went there anyway...

The other is the untidy rat's nest of pipework. I often checking that the pipe has not worn through somewhere (e.g. on the gear box adjuster).

And there did not seem to be long enough tubes inthe kit so I had to find some more (of suitable type).

Previously wrote:

On this same topic - I fitted a filter some years ago. Two issues that annoy me.

One is the LONG time it takes to see any oil returning to the tank after re-assembling an engine. Logic dictates that the oil gets in where it is needed very quickly but there is a worryingly long time to wait for evidence that it's all going where it should....and all that time there is nothing going to the valve gear. Although until thelater singles nothing apart from oil mist went there anyway...

The other is the untidy rat's nest of pipework. I often checking that the pipe has not worn through somewhere (e.g. on the gear box adjuster).

And there did not seem to be long enough tubes inthe kit so I had to find some more (of suitable type).

Hi

Dont know if you would be interested in this but i found an extra oil filter ( car type ) mounted in the tool tray ofmy 650 Manxman, the oil return pipe came up to the tool tray into the filter and back down to oil tank return.

The only thing that Iam worried about is the sharpe edge of the tool tray cuting the rubber oil line.

Geoff

A filter in the oil system is generally a really smart move for prolonging engine life. The use of the return feed line for a Norton set-up is not the best arrangement but will help take heaps of rubbish out of the oil. Especially when running-in a newly rebuilt engine.

However, there can be a downside to these gizmos if the plumbing lets you down. Check out my attachment........an expensive problem to solve as a consequence...... it happened on the run back from this year's Begonia.

As mentioned in my earlier post, the consequences of a failure in the filter plumbing are dire. Which is why I removed mine. Gordon.

Previously wrote:

As mentioned in my earlier post, the consequences of a failure in the filter plumbing are dire. Which is why I removed mine. Gordon.

Thank for the info Gordon and Phil will remove this extra filter to be on the safe side, never had a problem with theoil systm on my old dominators.

Geoff

Ihave mounted car type (small - Toyota) oil filters behind the gearbox, bolted to the engine mounting plates on my es2 and mercury return feeds with good results. Lots of space and doesn't compromise the pipework. With suitable oil friendly pressure hose and the correct hose fittings there should be no problems with leaks. The advantage is being able to use new detergent type oil which definitely stays cleaner for longer.

Previously wrote:

Ihave mounted car type (small - Toyota) oil filters behind the gearbox, bolted to the engine mounting plates on my es2 and mercury return feeds with good results. Lots of space and doesn't compromise the pipework. With suitable oil friendly pressure hose and the correct hose fittings there should be no problems with leaks. The advantage is being able to use new detergent type oil which definitely stays cleaner for longer.

yes this is the best place to mount one , the other way is to fit a exter fine mesh in the sump filter one inside the other you need a really good sir clip and make sure its in right there should be a alloy washer in there to , or the other place is to fit it in-between the oil tank and battery box on a good bracket , yours AJD

Previously wrote:

A filter in the oil system is generally a really smart move for prolonging engine life. The use of the return feed line for a Norton set-up is not the best arrangement but will help take heaps of rubbish out of the oil. Especially when running-in a newly rebuilt engine.

However, there can be a downside to these gizmos if the plumbing lets you down. Check out my attachment........an expensive problem to solve as a consequence...... it happened on the run back from this year's Begonia.

Phil, the failed item is stamped RGM, was that the supplier and if so is the Norvil part the same. Wondering if its a Chinese or Indian copy.

Hopefully you should have some redress with whoever supplied it. Not fit for purpose, so a small claim in the County Court might be necessary if the supplier is not forthcoming.

Harry.... you are quite correct with your RGM observation.

Problem was, I bought the bike with it already fitted and had no problems in the previous 3 years. I had recently purchased a filter kit, from RGM for another bike,and noticed that the the casting is now slightly different and the oil tube connectors appear to be slightly rifled where they enter the casting.

From previous experience, trying to claim compensation, due to failure of components, is not easy. There are so many factors which can be used as an excuse. eg were the parts fitted by a competent andqualified engineer? Were the parts regularly serviced? Was the component originally fitted to the vehicle from new? and so on.......

The units I use have the inlet and outlet feeds screwed in and not pressed in (locally made). Hopefully without your resulting expensive problem Phil.

Previously wrote:

The units I use have the inlet and outlet feeds screwed in and not pressed in (locally made). Hopefully without your resulting expensive problem Phil.

Are they generally available Dominic, if so can you give me contact details and prices. Thanks.

Hi there Harry

I can get an oil filter housing/boss with screw in fittings the same as the one on my mercury (takes a small toyota car oil filter) for about 17/18 pounds. Its about 225 ZAR from the supplier here in south africa (he does it as a service not as a business). Obviously the postage to you will have to be added on. I would be happy to send it to you.

let me know.

regards

Dominic

Previously wrote:

Hi there Harry

I can get an oil filter housing/boss with screw in fittings the same as the one on my mercury (takes a small toyota car oil filter) for about 17/18 pounds. Its about 225 ZAR from the supplier here in south africa (he does it as a service not as a business). Obviously the postage to you will have to be added on. I would be happy to send it to you.

let me know.

regards

Dominic

Hello Dominic,

Thanks very much for this. I did not realise that you were in South Africa. Possibly the cost of currency conversion, with the postage and our Customs VAT bill will perhaps make your kind offer a no go.

I much appreciate your offer andI will check on the best way to send you rands directly, to minimise any hassle to you.

Thanks again.

Harry

Hello Dominic,

I've been experimenting withoil filter housings myself,due to the distance between us.

I have taken a car housing with a good amount of metal around the stub pipes. I have currently drilled out these pipes and have tapped the holes with a fine thread. I've bought hydraulic pipe adaptor pieces and modified one end to a male thread to match the holes. The other end has a screwed male connection for the connecting pipe. The connecting rubberpipes fitted with a nut union will now screw directly onto thehousing. This long winded performance prevents the pipes coming off the housing,which would not be noticed until too late.

Any small hydraulic comany will make up the pipe with fittings for me.

Regards,

Harry

Previously wrote:

Hi there Harry

I can get an oil filter housing/boss with screw in fittings the same as the one on my mercury (takes a small toyota car oil filter) for about 17/18 pounds. Its about 225 ZAR from the supplier here in south africa (he does it as a service not as a business). Obviously the postage to you will have to be added on. I would be happy to send it to you.

let me know.

regards

Dominic