Fuel hose size reduction


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
User avatar
1200Doug
Posts: 30
Joined: Wed Jul 15, 2015 4:56 pm
Location: Long Island, NY
Motorcycle: 1986 GL1200 Interstate

Fuel hose size reduction

Postby 1200Doug » Fri Aug 21, 2015 11:48 pm



I'm trying to fit new fuel hose on my 86 GL1200. Every search results in the answer being 1/4" but that results in a not very snug fit and it's difficult getting a hose clamp under the #4 carb. The barb and casting tolerances are very tight.

Can I use 3/16" instead? I'm being careful to avoid kinks and it snugs onto the barbs better.

I was concerned the 3/16" might restrict fuel pump pressure too much and cause it to burn out?


It's a fine line between hobby and mental illness

User avatar
1200Doug
Posts: 30
Joined: Wed Jul 15, 2015 4:56 pm
Location: Long Island, NY
Motorcycle: 1986 GL1200 Interstate

Re: Fuel hose size reduction

Postby 1200Doug » Fri Aug 21, 2015 11:54 pm

Comparing T-fitting size with 3/16 and 1/4
Attachments
It's a fine line between hobby and mental illness

User avatar
spiralout
Posts: 1050
Joined: Sun Feb 17, 2013 6:41 pm
Location: Alabama
Motorcycle: 1975 GL1000 (gone)
1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: Fuel hose size reduction

Postby spiralout » Sat Aug 22, 2015 2:35 am

No advice on the restriction affecting the pump but the correct line size is 5.5mm. The fractional equivalent would be 7/32". Your 3/16" is 4.7mm and the 1/4" is 6.3mm.

User avatar
1200Doug
Posts: 30
Joined: Wed Jul 15, 2015 4:56 pm
Location: Long Island, NY
Motorcycle: 1986 GL1200 Interstate

Re: Fuel hose size reduction

Postby 1200Doug » Sat Aug 22, 2015 8:16 pm

Thanks Spiralout... Keep going:)
I used the 1/4" hose on the lines to and from the fuel pump to ease servicing later. The ones on the carbs will prob get ripped up removing them later.
It's a fine line between hobby and mental illness

User avatar
spiralout
Posts: 1050
Joined: Sun Feb 17, 2013 6:41 pm
Location: Alabama
Motorcycle: 1975 GL1000 (gone)
1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: Fuel hose size reduction

Postby spiralout » Sat Aug 22, 2015 11:48 pm

1200Doug wrote:I used the 1/4" hose on the lines to and from the fuel pump to ease servicing later. The ones on the carbs will prob get ripped up removing them later.

Ehh, I wasn't much help but your welcome.
1200Doug wrote:Thanks Spiralout... Keep going:)

I never expected anyone on a Goldwing forum to actually make that connection :shock:

User avatar
1200Doug
Posts: 30
Joined: Wed Jul 15, 2015 4:56 pm
Location: Long Island, NY
Motorcycle: 1986 GL1200 Interstate

Re: Fuel hose size reduction

Postby 1200Doug » Sat Aug 22, 2015 11:52 pm

See rear glass on CRV lol
Attachments
It's a fine line between hobby and mental illness

User avatar
spiralout
Posts: 1050
Joined: Sun Feb 17, 2013 6:41 pm
Location: Alabama
Motorcycle: 1975 GL1000 (gone)
1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: Fuel hose size reduction

Postby spiralout » Sun Aug 23, 2015 3:00 pm

1200Doug wrote:See rear glass on CRV lol

Nice. And I'm betting you're the only person on the GW forums to have that sticker on your Honda. We're probably at the younger end of the range of wing riders

User avatar
WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fuel hose size reduction

Postby WingAdmin » Sun Aug 23, 2015 10:51 pm

I replaced the fuel lines on my 1100 with 1/4" with no issues. I replaced the clamps as well, and just tightened them down well. No leaks, and easily replaced.

See: viewtopic.php?f=11&t=4163

User avatar
spiralout
Posts: 1050
Joined: Sun Feb 17, 2013 6:41 pm
Location: Alabama
Motorcycle: 1975 GL1000 (gone)
1980 GL1100I (with '77 1000 engine)
1996 GL1500 SE

Re: Fuel hose size reduction

Postby spiralout » Sun Aug 23, 2015 11:06 pm

WingAdmin wrote:I replaced the fuel lines on my 1100 with 1/4" with no issues. I replaced the clamps as well, and just tightened them down well. No leaks, and easily replaced.

See: viewtopic.php?f=11&t=4163

Same here but I searched around some and it seems lots have OP's problem with the wall thickness of 1/4" line on the 1200 carbs, there's not as much clearance between the barb and casting as on the 1000s and 1100s.

User avatar
mrtwowheel
Posts: 83
Joined: Fri Oct 25, 2013 12:09 am
Location: Camden, Michigan
Motorcycle: 1986 GL1200I

Re: Fuel hose size reduction

Postby mrtwowheel » Wed Aug 26, 2015 7:42 am

I've been using a different clamp on hoses. I don't much like the original Honda type or the conventional type hose clamps that chew up the hose and is rarely reusable. I've been using "Fuel Injection Hose Clamps". Ideal makes these and they are available in different sizes and individually at my local auto parts store. These are worth checking out with your looser fit. These clamps have a nice look, always an easy install and reusable, good finish too. Don't know if they are zinc or stainless, but they never rust. I cut the screws shorter.

Scott

User avatar
WingAdmin
Site Admin
Posts: 17050
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Fuel hose size reduction

Postby WingAdmin » Wed Aug 26, 2015 8:43 am

mrtwowheel wrote:I've been using a different clamp on hoses. I don't much like the original Honda type or the conventional type hose clamps that chew up the hose and is rarely reusable. I've been using "Fuel Injection Hose Clamps". Ideal makes these and they are available in different sizes and individually at my local auto parts store. These are worth checking out with your looser fit. These clamps have a nice look, always an easy install and reusable, good finish too. Don't know if they are zinc or stainless, but they never rust. I cut the screws shorter.

Scott


I use these as well. They present a smooth, solid surface to the hose (unlike the worm-drive screw clamps that like you say, chew up the hose) and clamp tightly, preventing leaks.


Old Fogey
Posts: 724
Joined: Fri Oct 30, 2009 2:09 am
Location: Glasgow Scotland
Motorcycle: 1976 GL1000
1979 GL1000
Contact:

Re: Fuel hose size reduction

Postby Old Fogey » Tue Sep 15, 2015 10:44 am

I have 5.5mm braided line kits in stock for the 1200.
But I only have 9 sets left that have the OEM outer diameter. My supplier is now stocking pipe that is 10.5mm outer instead of the 11.5mm. I cannot find anyone else with the larger one. Only 1mm but it makes a difference.
These 9 will come with zinc plated clips instead of the stainless ones in the advert.

At the moment I am out of the GL1000/1100 kits

http://www.wingovations.com/index/4586592813


Image Image

'Impossible' is just a level of difficulty! The only stupid question is the one you didn't ask first!


Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: Google Adsense [Bot] and 2 guests