Quoting: Incursus
I need cheapish stuff cos its about 8m. Needs to be good enough for the new engine/fuel pump though
Ditto - I think (http://www.mkb.cc/forum/smileys/dunce.gif)
Quoting: Jamieg285
and then braided for when it becomes visible
I thought braided was important for below the car to protect the pipe?
me (http://www.mkb.cc/forum/smileys/dunce.gif) as well? (http://www.mkb.cc/forum/smileys/smirk.gif)
Quoting: 55starchief
Guys 8mm or 3/8 hose aint gonna be big enough on your motors min recomended fuel line from tank to pump and pump to regulator is 12.5mm or 1/2" for performance motors
OK, good call. Might as well get it right from the start.
What that in - AN? -8 ?
Quoting: Incursus
I thought braided was important for below the car to protect the pipe?
Nah, it's more for show on a street car.
Quoting: Roadkill
1/2" ???
Would've thought 7/16 or 10mm I/D would be O.K . . . .
See, it's all too confusing?
8-9-10-12??? How do we work it out?
Won't a fatter pipe affect the pressure?
Quoting: Roadkill
1/2" ???
Would've thought 7/16 or 10mm I/D would be O.K . . . .
most carbs have the facility to dual fuel so in order to keep good pressure from the regulator on twin lines the main line needs to be twice the output lines to the carb.
So if you were gonna run 3/8 lines from the regulator to carb a 1/2" main line would be about right.
Also its recomeded that you avoid using 90 and 45 angle to get from and to the cardb etc. If you must use bends use the tube style 90s
Quoting: Jamieg285
See, it's all too confusing?
8-9-10-12??? How do we work it out?
Won't a fatter pipe affect the pressure?
not really mate
-8 or jic 8 is 3/8 hose the 8 being the tube size
there is no -9 only -3 and -5 are odd numbers used for brakes and clutch
A fatter pipe wont affect pressure but will aid the flow of fuel. The pressure is regulated at the end of the line before you split to the carb. the regulaor should be as close to the carb as posible
http://www.holley.com/data/Products/Technical/Fuel %20Pump%20Tech%20Info.pdf
Kinda helpfull
FUEL LINE SYSTEM
The fuel line system should be routed to avoid running near hot spots, such as
various exhaust system components, and designed to promote maximum fuel
flow. Most factory stock fuel systems utilize 5/16" fuel lines. This size works
well on street applications with stock engines. When the horsepower requirements
go up, however, the inadequacy of this line size soon becomes apparent.
A #6 (3/8") line size is sufficient for all street performance applications
and some racing applications. #8 (1/2") fuel lines are used on everything
else, including alcohol applications. Avoid using rubber fuel lines, or use
them sparingly, for two reasons. First, rubber is more resistant to the flow of
fuel than any hard line. An actual pressure loss can be measured over distance.
Second, for safety’s sake, it’s not a good idea to use rubber fuel line,
especially when using a high pressure performance fuel pump.
Quoting: 55starchief
most carbs have the facility to dual fuel so in order to keep good pressure from the regulator on twin lines the main line needs to be twice the output lines to the carb.
So if you were gonna run 3/8 lines from the regulator to carb a 1/2" main line would be about right.
Also its recomeded that you avoid using 90 and 45 angle to get from and to the cardb etc. If you must use bends use the tube style 90s
My carb only has single feed.
However, in the future I will be swapping to Pro-Flo EFI, but I don't know the fuel requirements for that yet, apart from it will need higher pressure and therefore a different pump.
Quoting: Jamieg285
How do the following match up to mm and inches?
-4
-6
-8
-10
-12
-4 = 5.56mm
-6 = 8.73mm
-8 = 11.12mm
-10 = 14.27mm
-12 = 17.47mm
-3 and -4 are mainly brake and clutch sizes unless your in the F1 industry when they use -6
Quoting: Jamieg285
My carb only has single feed.
what carb is it ?
here is a link to a suppler of goodridge hose, 200 and 600 are braided 5s6 is not. I will go for the 536 as everything under my hood will be blue silicone also i have had good results with the 536 before
http://www.performancecentre.co.uk
Quoting: Jamieg285
Carb is the Edelbrock 1411 - Performer 750cfm elec choke
Am pretty sure this can be dual fueled with the addition of a second fuel nipple on the second otherside of the carb
Quoting: Incursus
Part No. FHO15
Car Universal
Description Black cotton overbraid
Int. dia. 12mm
Price (per metre) £3.60
Looks like the stuff....
No way would i run that , but hey its your car. If your on a tight budget run a length of s/steel tube or aluminium tube its about the same price as that stuff but a lot better
Quoting: 55starchief
Am pretty sure this can be dual fueled with the addition of a second fuel nipple on the second otherside of the carb
Not sure on that, not seen anything about it on the sites I have been visiting.
Would be intrested to know if it can be done though.
Quoting: 55starchief
Quoting: Incursus
Part No. FHO15
Car Universal
Description Black cotton overbraid
Int. dia. 12mm
Price (per metre) £3.60
Looks like the stuff....
No way would i run that , but hey its your car. If your on a tight budget run a length of s/steel tube or aluminium tube its about the same price as that stuff but a lot better
Well what do most people use? mines got rubber hose on at the moment... (http://www.mkb.cc/forum/smileys/dontknow.gif)
Quoting: Incursus
Well what do most people use? mines got rubber hose on at the moment...
Most people would run either a braided/high performance line or a steel/s/steel/aluminium line under the car then either a rubber hose or braided/hi-perf to the carb
Quoting: 55starchief
Looks good mate, I would ask andy for a price on the fuel pump and filter, he might also be able to get the other stuff seeing as he is a racer your choice.
That is the plan at the moment. First I want to make sure I have the full list of requirements.
Quoting: 55starchief
I wouldnt bother with a Red pump mate the flow rate is to low for your motor especialy if you plan on doing any updates soon. I would look at a Blue minimum but a black if the budget is there. I have an aeromotive fuel pump and regulator that flows 150 gph+
According to the Holley page that Chris posted :-
500bhp(more than I will ever be going) = 250 lbs/hour
250/6 = 41 gallons/hour.
Red more than covers that, so why would I need to go higher? At this stage the carb needs to be limited to 5.5 psi, and when I go EFI I will need a different pump anyway. Am I missing something?
Quoting: Jamieg285
- Hard line (1/2 inch) 25' length, so plenty spare (Chris )
(http://www.mkb.cc/forum/smileys/up.gif)
Quoting: 55starchief
I wouldnt bother with a Red pump mate the flow rate is to low for your motor especialy if you plan on doing any updates soon. I would look at a Blue minimum but a black if the budget is there
Yeah looking at black top for mine I think. though blue should do it.
Quoting: 55starchief
Can you not get away with a straight conector to the carb mate? seems a shame to restrict the flow as it enters the carb
That comes with the carb, however the instructions (and past experience) show that there might be clearance problems with the air cleaner.
It's not definitely going to be used, but ready to hand 'just in case'.
Quoting: Roadkill
Can someone recommend a Swirl-pot for the Camaro ?
Above my head mate. Sorry.
Quoting: Jamieg285
Red more than covers that, so why would I need to go higher?
Im a belt and braces man mate, I would rather have a bigger pump and it work at half its capacity than a smaller pump working almost to its max
Quoting: Barry Grant
Can a fuel system that is too large hurt performance? No, it assures your combination will reach its full potential: the needles and seats will shut when the float bowls are full. Conversely, if your fuel system is marginal, fluctuations in battery voltage will cause fuel flow changes from run-to-run which affects the float levels in the carburetors and out-the-window goes your consistency! So how do you know if your volume is adequate?
Quoting: Jamieg285
show that there might be clearance problems with the air cleaner.
Use a hammer to re-adjust the shape of the pan. (http://www.mkb.cc/forum/smileys/wink.gif)
Quoting: Jamieg285
- -6AN braided hose for between regulator and carb
Thats the norm mate, i will run twin -6 lines to my mightydemon from my dual output regulator
Quoting: Jamieg285
That comes with the carb, however the instructions (and past experience) show that there might be clearance problems with the air cleaner.
could always make a spacer ring like dean has for his paperweight
Quoting: 55starchief
could always make a spacer ring like dean has for his paperweight
I do have a spare collar . . . . (http://www.mkb.cc/forum/smileys/chiny.gif)
Or
Quoting: Roadkill
Use a hammer to re-adjust the shape of the pan.
(http://www.mkb.cc/forum/smileys/roll.gif)
Quoting: Roadkill
While on the subject of fuel fittings . . .
Can someone recommend a Swirl-pot for the Camaro ?
(http://www.nfauto.co.uk/images/april_2005/fuel_surge_tank.jpg)
FUEL SWIRL POT
1.5 ltr Prevents misfiring and fuel surge in fuel injected engines during hard cornering and braking. Feed this tank with a low pressure electric pump from the main tank .Top breather take off, feed and return take offs and main outlet at the bottom.
http://www.nfauto.co.uk/fuel_swirl_pot.htm
Quoting: 55starchief
1.5 ltr Prevents misfiring and fuel surge in fuel
injected engines during hard cornering and braking
Are we sure this is the problem with mine ?
And what the F*ck are those 4 outlets for ? (http://www.mkb.cc/forum/smileys/shame.gif)
Quoting: Roadkill
Are we sure this is the problem with mine ?
I am pretty sure your fuel tank isnt baffled and its fuel surge and wash thats causing the cut out. This would stop that by having a small tank at the end of the fuel line at a constant pressure.
One way to check would be to install that blue top pump thats sat on the shelf in your garage and test again before buying a swirl pot.
Ypu could also look on fleabay and see if you can get a cheaper swirl pot now you know what it looks like. Dont get a water one though they look the same but have a rad cap on top
Quoting: Roadkill
nd what the F*ck are those 4 outlets for ?
(http://www.mkb.cc/forum/smileys/rtfm.gif) It tells you in the description
Quoting: 55starchief
One way to check would be to install that blue top pump thats sat on the shelf in your garage and test again before buying a swirl pot.
Good idea.
Well volunteered. (http://www.mkb.cc/forum/smileys/tongue.gif)
Also I'm think of re-routing the fuel-line - it's all-over the place.
Quoting: Roadkill
b) It's a mix of particle AND bling.
particle (http://www.mkb.cc/forum/smileys/roll.gif)
Quoting: Roadkill
If I posted every time you made a spelling mistake I'd be on double my post count by now.
Thats exactly what you did yesterday (http://www.mkb.cc/forum/smileys/mad.gif)
Quoting: Roadkill
http://cgi.ebay.co.uk/ALLOY-FUEL-TANK-11-GALL-COMP -RACE-KIT-CAR-RALLY-OFFROAD_W0QQitemZ8056389638QQc ategoryZ43120QQtcZphotoQQssPageNameZWDVWQQrdZ1QQcm dZViewItem
That would be a soloution but i would probably still add a swirl pot for looks.
Quoting: 55starchief
That would be a soloution but i would probably still add a swirl pot for looks.
Location of a 11 Gal. tank would be an issue . . . . . . (http://www.mkb.cc/forum/smileys/chiny.gif)
Quoting: 55starchief
Im a belt and braces man mate, I would rather have a bigger pump and it work at half its capacity than a smaller pump working almost to its max
Makes sense. Annoying thing is the blue top comes with a regulator, which I don't want as I already have one.
Will re-consult the catalogue.
Quoting: Roadkill
Location of a 11 Gal. tank would be an issue . . . . . .
If we measure up in the trunk i can get a price to have one made. Should be able to make it fit in that bit behind the rear hump
Quoting: 55starchief
I have no idea what you mean
I do (http://www.mkb.cc/forum/smileys/devil.gif) (http://www.mkb.cc/forum/smileys/devill.gif) (http://www.mkb.cc/forum/smileys/devil.gif)
Quoting: Roadkill
Edited by: Moderator
Quoting: Jamieg285
Also a couple more questions...
Anyone know how the pipe attach at the fuel tank. I assume that there is a fixed hard line coming out of it, which you clamp a rubber hose to.
Also, is it OK to have the fuel pump attached directly to the hard line, or should it have a rubber hose both sides, before joining the hard line?
(http://www.mkb.cc/forum/smileys/bump.gif) I think this post might have been overlooked.
Quoting: Jamieg285
I think this post might have been overlooked.
ooops my bad
ok not a good idea to plumb hard line straight to the pump add a small flexable section just in case a) you need to remove the pump b) remove any added vibration and stress to the termination
You will find that the hard line coming out of the tank will probably have a connector to the main hard line running under the car. You can either find the thread and get an adaptor or cut it off and use a hard line to flex connector
Quoting: Roadkill
I'm kinda thinking of going shiny shiny braided too, now.
sell out
Quoting: 55starchief
ok not a good idea to plumb hard line straight to the pump add a small flexable section just in case a) you need to remove the pump b) remove any added vibration and stress to the termination
You will find that the hard line coming out of the tank will probably have a connector to the main hard line running under the car. You can either find the thread and get an adaptor or cut it off and use a hard line to flex connector
That's what I figured on both counts, but thought I'd better check first.
Quoting: Roadkill
Apparently it looks like (for mine at least) you put the pump as close to the tank as possible and the Regulator as close to the carb as possible . . .
I already stated this
Quoting: 55starchief on page 1
A fatter pipe wont affect pressure but will aid the flow of fuel. The pressure is regulated at the end of the line before you split to the carb. the regulaor should be as close to the carb as posible
Quoting: Roadkill
Yeah, but the position of the PUMP was never discussed . . .
thats cause no one asked me, besides yours is already at the back
Quoting: Roadkill
Kinda thinking of losing the boot space all together . . . make it easier to access it all.
It's a bit cramped where it is . . .
if the old tank is coming out no reason we couldnt cut the floor out and weld in a section for the new ebay found tank to fit. would look almost stock then
Quoting: Roadkill
Kinda thinking of losing the boot space all together . . . make it easier to access it all.
It's a bit cramped where it is . . .
Make a large trap door style floor, you can still use it for carting stff about then.
Quoting: Jamieg285
Make a large trap door style floor, you can still use it for carting stff about then.
Kinda the plan . . . I have a :redneck: flip-up shelf at the mo.
Thinking of using the space below . . . Quoting: 55starchief
if the old tank is coming out no reason we couldnt cut the floor out and weld in a section for the new ebay found tank to fit.
(http://www.mkb.cc/forum/smileys/chiny.gif)
Next stop - TUBS !!!
(http://www.mkb.cc/forum/smileys/shame.gif)
Quoting: Roadkill
Quoting: 55starchief
if the old tank is coming out no reason we couldnt cut the floor out and weld in a section for the new ebay found tank to fit.
Next stop - TUBS !!!
Come on mate i have the welder now (http://www.mkb.cc/forum/smileys/devil.gif)