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Old 08-12-2011, 01:44 PM   #1
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Default Fuel line routing

Gents,

Hope you can help me here,

Im looking for how you have run your fuel line in your buggy when using fuel filters, gas coolers etc...

Cheers
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Old 08-12-2011, 02:06 PM   #2
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Honestly i have always based mine on having a clunk tank or not. If I have a clunk i run it short as possible. I currently run a fuel filter and a lot of line on my mbx6 so i don't flame after being on my lid which is quite often lol.
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Old 08-12-2011, 06:16 PM   #3
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There are many different ways to run them and it all depends which car and the type of tank whether it runs, a clunk type filter or external filter. If it's clunk the length of your line is not so important, but if it's external you want to run the longest possible line you can as to prevent stalling when the car is on its lid (also remember not to go over the 125cc for sanctioned events).

I see many different ways guys run their lines. Best thing to do is hit a gallery like http://gallery.neobuggy.net/. Pick one of the latest events and see how the pros are routing their lines on the same car you drive. Some really high quality pics there that you can pick up on a lot of little things the pros do differently. Pick a method and try it.

Personally I try and avoid my lines from touching any part of the engine case or head. Also make sure they are secured and not flopping about rubbing anywhere or having a chance to get snagged on anything and tear/pop off during a race.
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Old 08-13-2011, 06:05 PM   #4
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Here's an idea I had. On my rc8b. Anyway I ran my fuel line it was kinked or way too long. So my answer was... I took a 3/16 piece of steel brake line for cars, bent it the way I wanted it, and just used silicone fuel line on the ends. Works like a charm, a lot cheaper to replace. Because the hoses are only a couple inches long on the ends, and also it's fixed out of the way of everything.
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Old 08-13-2011, 06:16 PM   #5
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Here's how I used to route mine when I ran my RC8/RC8T. I used to run a fuel and exhaust filter stacked on one-another using zip-ties, with 2 holes reamed into my tank shield :
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Old 08-13-2011, 09:46 PM   #6
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thats the lines on my mugen ..


Fuel line routing-imgp6049.jpg
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Old 08-13-2011, 10:47 PM   #7
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Quote:
Originally Posted by NitroFreakManHo View Post
Here's how I used to route mine when I ran my RC8/RC8T. I used to run a fuel and exhaust filter stacked on one-another using zip-ties, with 2 holes reamed into my tank shield
Shouldn't the gas cooler be in the pressure line?

Last year I used a very long fuel line to get very close to 125 ml of fuel in the system. (30 cm of fuel line = approximate 1,5 ml).

This spring I notised, the engine ran quite lean when the tank was nearly empty (20 ml left). I could turn the HSN 1/6 of a turn out without the engine ran too rich. After refueling the tune was waaaay too rich.

I redused the line with 41 cm! Then I had to lean the HSN 1/2 of a turn before the engine ran smoothly on the top!!! Talking about too much resistance in a long piece of fuel line!!!!!

Now I uses two empty fuel filters in the fuel line to get approximate 124,5 ml of fuel in the system.

How to route the line: Away from the pipe to prevent the fuel to be heatet up, and pay close attension NOT TO HAVE ANY LINES CLOSE TO THE FLYWHEEL!!!!!
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Old 08-13-2011, 10:53 PM   #8
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I forgot, that's an old pic, I actually have two coolers, one on each line, stacked on each other ( the other cooler I put under the one in the pic. I also forgot to mention, that's a Jammin tank.
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Old 08-13-2011, 11:53 PM   #9
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Quote:
Originally Posted by Lille-bror View Post
Shouldn't the gas cooler be in the pressure line?
I was thinking the same thing.

I like the pictures of the setups above guys. Very neat indeed.

Last edited by John.; 08-14-2011 at 07:07 PM.
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Old 08-14-2011, 02:50 AM   #10
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This is how I route mine. I want the pressure line as short as possible.
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Old 08-14-2011, 11:54 PM   #11
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Default my fuel line

same as ram... except placed on top of engine carb.
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Old 08-15-2011, 01:15 AM   #12
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Quote:
Originally Posted by sly6t View Post
thats the lines on my mugen ..


Attachment 794749
Thats one weird lookin Mugen?
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Old 08-15-2011, 05:31 AM   #13
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Quote:
Originally Posted by NitroXray80809 View Post
Thats one weird lookin Mugen?
looks like a mbx5 with truggy front tower home made rear
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Old 08-15-2011, 01:27 PM   #14
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Quote:
Originally Posted by NitroXray80809 View Post
Thats one weird lookin Mugen?
its like canadian club n cola lol .... " similar but different"

its a 5R-prospec ... cbf upgrading to a 6 so i just pimped out my 5r .. its got a full carbon fiber chassis and alot of other mods .. different shocks and yes a 5t front shock mount cos of the way the pins come through them i needed the right thickness , so instead of making it, i just bought the 5T carbon one and trimmed the ears down a lil so it looks ok .. and it was cheap being for a 5t. the 5r never had carbon shock towers as a option. the buggy is extreamly light , the use of very thin carbon/kevlar worked out great and kept up the strength. to all the haters when i first posted the pics a few months back said it would snap and the rear shock tower was to weak being so thin .. well iv put a heaps of tanks through this and its still "all gravy , baby " have not re-made any part. the only thing i did was to switch to a one piece CNC engine mount for added stiffness around the engine ..
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Old 08-16-2011, 05:53 PM   #15
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Here's 2 pics of my MBX6, 1 with standard tank & the other with clunk tank -




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