eddiethefish

I mean the pressure line, by the way. he he he

manokgt4

I run mine really short like my 1/8......check it out.

eddiethefish

any problem when refuel?

sausage_link

yeah my pressure line is really short to

is that problem?

popsracer

Manticore;

the ONLY thing that I disagree with is that the fuel/pressure line length can have a DRASTIC effect on engine performance. A 1" inch diffrence would hardly be noticable, BUT a 4" to 6" difference sure would. The better you have your engine tuned the more noticable the difference in line lengths.
Too Short of a pressure line can cause fuel foaming in the tank.

popsracer

Manokgt4;

I don't know how many of us that are so grateful to Associated for adding a pipe mounting nub on the end of their pipes. I used to HATE having to use the wire wrapped around the pipe thing.

Nice Car. Looks like a racer to me.

TheRagunCajun

I found that my nrs4 2 had bubbles in the line due to a pressure line too short. Thats why i now have a foot of tubing but ill soon change it to about 8". I think ill go to the hardware store and pick up some o-rings to go under my tank screws as 1 isnt enough. My engines runs fine and doesnt over heat so i dunno. i might leave it along. But it cant hurt. The quicker engine response could be nice but my new engine(team STS MT12) is the first one i have with a slide carb and rear exaust so it's always a quick response.

eddiethefish

Hello popsracer,

What would you think that I have shorten the pressure line to 8" long and still put the fuel filter in between the line. That is I don't use the fuel filter on the fuel line, but on the pressure line, instead.

Manticore

I myself use long fuel line (approx 12 inches) on the pipe side.

asd

roflmfao!

popsracer

Eddie;

Adding a fuel filter will do the same thing as having a long tubing line. You are increasing the volume of the pressure line so it would dampen the pulses. For any on-road car I just don't see it as nesessary. Generally you WANT a responsive engine in on-road.

Manticore;

If you need that length to control foaming in your fuel tank, then fine. But you will find that your engine is more responsive with a pressure line that is a few inches shorter. Be there done that.

Manticore

the long length of fuel line used is to reduce pulse effect (equalize) to the carb.

modellor

I agree with Manticore on this one. I also run between 10 and 12 inches on the pressure pipe.

popsracer

Your engine will STILL be more responsive with a shorter line. If you have never tried it, then why not. I HAVE tried the longer fuel and pressure lines, (most recently on my T-Maxx) and always go back to something shorter.

Fuel: As short as reasonably possible.
Pressure: One loop 6-8" total length.

I'm NOT trying to force anyone into doing something that they don't want to. But if you haven't experimented with the line lengths, there can be some benefit from doing so.

Sometimes, very, very small changes can add up to big gains in performance. Sometimes, you never know until you try.

jason102276

popsracer why do you say to run fuel feed as short as possible?

ive gotten into the habit of making one loop around the head and using a rather short exhaust tube like 6 inches maybe

if i shorten the fuel feed i would probably run richer?

and if i add a filter to ehaust leaner?