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Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

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Old 11-23-2012, 06:41 PM   #21 (permalink)
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Well, that is fair enough! I don't think about classic Triumphs that much to be fair as I've never had one.

Mine is a mashup and I have a stainless tank. Nothing to worry about there, my tank is always perfect!

Yeah, the top tube being exposed to air probably means a filter off the bottom is a good idea. Even so, I'd still probably just whack a metal screen in then filter post engine.

Do you actually get rust in the top tube then? Surely you'd have an oil mist stopping that?
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Old 11-23-2012, 07:01 PM   #22 (permalink)
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Well here's my thinking, mad or sane: Most Jap bikes, European bikes, cars & truck wear their engines out at a noticeably slower rate than most British bikes. Most Jap bikes, European bikes, cars & trucks pump their engine oil through a decent filter before it goes into the crank etc. That's what the KR system does, and that's why I like it...
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Old 11-23-2012, 07:31 PM   #23 (permalink)
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It doesn't matter much whether you put yer filter on the return or feed line, as long as you put one in somewhere. Theory dictates the feed line is best, except in my opinion I would not want the restriction of cold oil thru the filter at startup. So I go with a return filter, which I reckon covers most of the filtration needs in a simple way.
One then uses modern detergent oils, and I'd suggest oil and filter changes at 2000 mls max
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Old 11-23-2012, 07:46 PM   #24 (permalink)
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But where do these other engines pump? Do they have a wet sump? Do the pumps suck from the tank?

Putting a filter in pre pump could restrict flow.

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Old 11-23-2012, 07:48 PM   #25 (permalink)
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Quote:
except in my opinion I would not want the restriction of cold oil thru the filter at startup.
Agree with this when a brand-new filter needs to be saturated with oil before it will flow.

Other than that, I disagree!
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Old 11-23-2012, 08:25 PM   #26 (permalink)
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Agreed. Of course, a well tended machine ought not have any filth anyway, so whether one mounts it fore or aft ought not matter much. The biggest concern I would have (as was previously noted with mounting a filter on the supply line) would be whether it is restricting the needs of high RPM oil supply. I'd want to fit a proper analogue oil pressure guage (not simply an idiot light) to ensure adequate flow.

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I can't see how this method could possibly be better than cleaning oil on the return line though?

Surely, as somebody else said (can't find the post to quote for a second) if you put clean oil in the tank, there's no crap in the tank. If you put the filter after the tank but before the crank, you are cleaning clean oil. The crank/engine in general is then making the oil dirty and dumping it back in the tank. Now you have a dirty tank which NEEDS cleaning before it enters the engine. It's basically a solution for a problem that wouldn't exist if the filter was on the return (due to oil being as soon as it's dirty rather than let it sit in a tank).

Engineering wise it's cool. Looks nice, something different etc. Practically it's no different other than having the tank as a "dirty" part of the loop.
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Old 11-23-2012, 08:42 PM   #27 (permalink)
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I am currently engaged in a full frame-off resto on a mate's 1979 T140D. Despite the bike's questionable history and the tremendous amount of sludge I found in the oil-bearing main tube (and a fully clogged screen that had ripped open) there is surprisingly little rust inside, and no scale to speak of. That said, the fact that over time small particules will enter into the engine without taking necessary steps to prevent this are prominent. I've been mulling the idea of mounting strong computer hard drive magnets in the main tube, and had initially thought that in order to avoid clearance issues, I might fit a filter boss INSIDE the main tube, enabling a spin-on filter to mount flush with the bottom of the frame. If I were a better metal fabricater, I'd do just that, but sadly I'm not, and will need to make use of bits and bobs commercially available. Either way, I've not gone to this much trouble not to mount something up, but I've got to decide the best route.
This is a fully enthralling thread.
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Originally Posted by loxx101 View Post
Well, that is fair enough! I don't think about classic Triumphs that much to be fair as I've never had one.

Mine is a mashup and I have a stainless tank. Nothing to worry about there, my tank is always perfect!

Yeah, the top tube being exposed to air probably means a filter off the bottom is a good idea. Even so, I'd still probably just whack a metal screen in then filter post engine.

Do you actually get rust in the top tube then? Surely you'd have an oil mist stopping that?
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Old 11-24-2012, 04:46 AM   #28 (permalink)
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Quote:
Originally Posted by shoegaze View Post
I am currently engaged in a full frame-off resto on a mate's 1979 T140D. Despite the bike's questionable history and the tremendous amount of sludge I found in the oil-bearing main tube (and a fully clogged screen that had ripped open) there is surprisingly little rust inside, and no scale to speak of. That said, the fact that over time small particules will enter into the engine without taking necessary steps to prevent this are prominent. I've been mulling the idea of mounting strong computer hard drive magnets in the main tube, and had initially thought that in order to avoid clearance issues, I might fit a filter boss INSIDE the main tube, enabling a spin-on filter to mount flush with the bottom of the frame. If I were a better metal fabricater, I'd do just that, but sadly I'm not, and will need to make use of bits and bobs commercially available. Either way, I've not gone to this much trouble not to mount something up, but I've got to decide the best route.
This is a fully enthralling thread.
Cheers-
If I were on the filter on the feed line kind of guy I would totally steal this idea! Sounds ace.

You could easily just buy a bit of tube, weld a plate to the top of it and weld a fitting in the middle of the plate facing into the tube. Cut the bottom of the existing oil feed bit off the bike and whack it in! Would be fairly easy really.

As I say though, I worry about oil feed so I'll do it on the return.

Just to note, I have a fitting where the bloke before me had a pressure gauge coming off of where I believe there used to be an oil pressure switch? Looks pretty cool down there. Nice cheap mod
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Old 11-24-2012, 08:49 AM   #29 (permalink)
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what you're suggesting is exactly what a "Charlie's" filter is.

It's a B25 filter (that was considered for the T120'40 apparently) shoved up the bottom of the tube.

I had an incident (partly my fault) where the rust from the unused part of the frame was washed down into the main tank. The Charlies filter caught the stuff but a post pump filter would have been too late.
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Old 11-24-2012, 03:57 PM   #30 (permalink)
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Worrying stuff! I'm not rather pleased that I am using a stainless tank...
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