Triumphrat

GatorBait · 08-21-2006, 03:18 PM

I'm noticing that many of the gas and vacuum lines on my 1999 Legends are pretty well shot .. either cracked, split, or decomposing.

Has anyone gone through and replaced all of these lines on a triple classic?

Does anyone know the different diameter tubing that is required?

I think I want to use the transparent tubing for the gas lines when I replace mine, and use the black opaque stuff for the vacuum lines (to help distinguish between them).

And, where is a good place to source this stuff ... auto parts store?

jimmyj900 · 08-21-2006, 04:35 PM

I used the translucent yellow 'fuel rated' tygon tubing when I replaced my fuel line and if I remember correctly I bought it from McMaster:

www.mcmaster.com

The problem with most clear tubing is that it hardens as the gasoline gradually leaches out the softeners in the plastic. This is true of the yellow tygon and I had to replace it after about three years but that's much longer than the clear tygon.

Of course, now that they're adding oxygenators to fuels the tubing will harden up sooner.

One other potential problem with the clear (non reinforced) tubing is that it tends to kink easily. The cure for that is to buy an extension coil spring the same OD as the tubing ID and stretch it since that reduces the outside diameter a bit. Clip it to length, bend the ends in so they can't cut the tubing and slip it into the tube. No kinks and it helps the tube to retain the bend you put in it.

For the vent lines and such, just use vacuum tubing from the local auto parts store.

Jim

GatorBait · 08-21-2006, 11:30 PM

Good points Jimmy, thanks!

I guess the best bet would be to take down some of the old tubing or connectors and match them up.

MickMaguire · 08-22-2006, 07:57 AM

I bought some of the mcmaster stuff, its reasonably priced. However I wasnt to happy with the wall thickness so I ended up splashing from some in gray from Motion Pro. More expensive but much much thicker. For vent lines I would use the local hardware store or mcmaster if necessary

[ This message was edited by: MickMaguire on 2006-08-22 05:57 ]

TBSstunta · 08-22-2006, 09:10 AM

You can get the tubing from any autoparts store. Just bring some of the old stuff in and have them match it up. Make sure you get gas resistant stuff.

MickMaguire · 08-22-2006, 09:49 AM

Another couple of tips: avoid automotive gas line with webbing in it. The thickness and lack of lexibility can cause problems for routing - though if you can make it work its the strongest stuff around. Also, you might want to consider adding an inline fuel filter between the tank and carbs. This will mean you wont have to rely on or mess with the tiny filter in the T piece between the carbs (that often gets blocked).

GatorBait · 08-22-2006, 10:01 AM

Great tips! Thanks.

Anyone remember the diameter of the fuel & vacuum tubing that fits the T3s?

[ This message was edited by: GatorBait on 2006-08-22 08:02 ]