Britbike forum Forums British motorcycles in general The triple forum Oil tank pipe alternative?

I just replaced the feed line from the tank to the engine.
It strikes me as poor engineering to have a straight pipe from the tank when the line must make an immediate 90 to get where it's going. Seems to me that pipe should be at least 45 degrees.
I presume that fitting is BSP. Maybe I can cobble something together using parts from Pegasus?

With some machine work, parts from Pegasus will work. You need a -6 tube nut and -6 male-male connector. From a plumbing supply a 5/16" compression ferrule. Make a tube sleeve to fit the nut and 5/16" pipe with the end chamfered for the ferrule and chamfer one end of the -6 connector. The left parts in the picture:

Slide the nut on the pipe, then sleeve and ferrule, tighten the connector and nut. The ferrule seals the connection.
Now get a -6 Socketless elbow of the angle you need and -6 hose. The -6 Socketless hose is 0.30" I.D. so it will fit on the engine pipe without further pieces. But if you want to plumb the whole bike with AN you can use one of these:

It clamps onto the engine pipes with AN-6 ends.

Pegasus lists a female BSP to 6AN male elbow in their catalog.
Might be easier to just have an auto shop make a 45, 60, or 90 degree pipe with the proper flare at one end.

A75 connection on the tank for the engine is a 5/16" pipe. I presume the male BSP is on the mesh screen filter on a T150? My Wenco frame oil tank had a mesh screen like that. I drilled and tapped it for a -6 o-ring junction.

Hi David

Early t160 uses a 5/16 outlet with a kick in it part number 83-5890 may help to ease the problem.

Best regards

Esme

Isn't 83-5890 the 3/8" feed pipe? Wouldn't the early T160 filter, 5/16" feed pipe and union nut be the same as the T150?

https://www.triumph-spares.co.uk/oil-feed-pipe-t160-83-5890

https://www.triumph-spares.co.uk/t150-oil-feed-pipe-83-5129

I'm struggling to understand where the apparent "poor engineering" and "immediate 90-degree" bend in the line is, assuming it's a standard T150 oil tank?

Hi L.A.B

Possibly, my bike is a fairly early 160 and the outlet spigot fitted is 5/16" with a slight kick it also has 5/16" inlet on the crankcase: The parts book I have only lists 83-5890 "I assumed" this would be the part number for the earlier 5/16 option as nothing else is listed. David said his bike had a "straight pipe".


Best regards

Esme

The T160 3/8" feed pipe modification was apparently introduced from serial number 03356.
Chain tensioner bolt 71-4251 was introduced at 04569 but that's also in the parts book and "Starter Motor (up to engine No. 05000 approx.).....Starter Motor (after engine No. 05000)" suggests the parts book has been revised.




Yes, F3655/82-3655 was straight which continued to the '1974 T150 Series 1' parts book.
https://www.triumph-spares.co.uk/oil-feed-pipe-t100-and-t120-82-3655

The 1974 'T150 CJ14610' parts book, however, lists 83-5129 which appears to be the angled 5/16" pipe presumably also used on pre-03356 T160s.

Perhaps I have the line routed incorrectly? I just followed the way the old line was fitted.
Maybe it's supposed to go directly down under the back of the gearbox? Looks to be a very tight squeeze to get it there and cross the return line.

I would say it was, even though I have a T160 with the 'kicked' 3/8" tube and not a T150.

T160:






I'd think it would still be an improvement on how it is now although the kicked 5/16" tube might help?




It shouldn't be a problem?
T160 again (feed line without the spring protector):



https://www.shannons.com.au/auction...winter-classic-auction/XBAC7E3UBD0JBWQE/


https://online.handh.co.uk/m/lot-details/index/catalog/112/lot/45071/?url=%2Fm%2Fview-auctions%2Fcatalog%2Fid%2F112%2F%3Fpage%3D2

Thanks! I'll re-route the feed line.
Not as if there's any hurry, it snowed today.