Fuel line replacement

[LugNut]

Got a sweet mint 42 year old bike here... Most everything looks great. But... Gonna go through whole brake system (getting new rubber lines made locally, rebuild calipers with SS pistons, rebuild MC front and rear etc)... Figured I'd also go through and replace fuel (and vacuum) lines. What size and how many feet would I need to have on hand? Haven't even started tearing it apart.... Did Yamaha use Corbin spring clamps, if not what specific "correct" style clamp
Any preference on brand of fuel/vacuum line for an authentic/stock build??

Thanks

[IanDMacDonald]

Hopefully not "rubber" lines, and instead S/S.

[LugNut]

Hopefully not "rubber" lines, and instead S/S.

Nope... Staying as original looking as possible... So new bubbler hises and may be able to reuse original banjos. This bike will get ridden 500 miles a year to vintage events and not ridden hard. Just my little vintage stocker... Got other bikes for real riding.

[LenB]

Onboard with you trying to keep things looking as 'original' as possible, but when technological advances can make you safer, there are compromises. Went with SS brake lines clad with black vinyl - look 'original' but are stronger, durable and more reliable. The kit also came with all the fresh hardware. Caliper, master cylinder rebuild kits and fresh pads were also part of the improvements. FRESH DOT3 brake fluid also important. That tin that's been sitting on your garage shelf for the last 20+ years is garbage. Have done most everything possible / affordable to make the beast GO, but it's just as, if not more important to make it STOP. Strange thing about accidents, they don't care how little you ride and statistics show most happen close to home. Add in a little rider skill and reaction time and you'll be around a little longer.

[cajun31]

Got a sweet mint 42 year old bike here... Most everything looks great. But... Gonna go through whole brake system (getting new rubber lines made locally, rebuild calipers with SS pistons, rebuild MC front and rear etc)... Figured I'd also go through and replace fuel (and vacuum) lines. What size and how many feet would I need to have on hand? Haven't even started tearing it apart.... Did Yamaha use Corbin spring clamps, if not what specific "correct" style clamp
Any preference on brand of fuel/vacuum line for an authentic/stock build??

Thanks

Although I agree that the brake lines should be upgraded to stainless clad in black vinyl you can get the fuel line from any reputable motorcycle dealer. Just carry a sample of the old line with you for comparison. I have a vintage cycle repair shop that I go to. He simply orders Honda line. You want to match the diameter because when you do the plumbing there are a lot of small cuts/lines in a tight area.

[oldyam80sg]

I bought Tygon fuel line on E Bay years ago. Very flexible when new. I'm thinking 1/4" ID but I also have PIngel fuel petcocks and a Pingel vacuum valve and the Tygon on there is tight to go on. But it won't come off easily.

[DiverRay]

OEM fittings need 6mm line. Not easy to find, but works better than 1/4", as it's slightly smaller ID. Online was the only way I could find it, but I don't remember who now...

[2WheelFun]

I think my original clamps were the wire spring clamps with the 2 hoops at the ends. I bought an assortment like this:

https://www.ebay.com/itm/23357165887...gaAv5nEALw_wcB

You should get several feet of hose, it also works on most small engines. I also purchased a couple of elbows because the new fuel line wanted to kink when I copied the routing and length of my original octy. There are 90° filters available since your petcock screens may be on the way out if they aren't beat already.

Mine was also a low mileage bike when I got it, 7200 miles when I woke it up. 500 miles a year should keep it running good. I look to buzz around on mine a couple of days per month during the season.

[dpotter58]

I picked up some hose made for outboard motors. Couldn't kink .

[oldyam80sg]

I just bought some on E Bay Thursday as my bike sits now in Mom's garage so I can do some work on it.