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Fuel pump/ system...

8015 Views 32 Replies 8 Participants Last post by  Glenn B, 
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HogV8 said:
Olaf,
I don't have a Carter fuel pump , I have a Holley Red and it will fit between the carb and the Dist. I am not going to use the mounting bracket that came with the pump, I am going to make my own that will bolt to the two rear carb mounting bolts and to the botton of the fuel pump . I will have spacers between the bracket and the bottom of the fuel pump to raise ithe pump as high as I can to keep it as cool as possible. I think the Carter is much larger than the Holley so I'm not sure if it will fit between the Carb and the dist. and with the top mounting bracket it may be difficult to mount.
Good luck,
Jack
Click to expand...
Hmmm....now that you say it....you are right - I will have to fabricate a new bracket, too - but even then it will be hard to mount. But I've heard that the Holley pump need the use of a pressure regulator. That was the reason my decision felt to the 5psi Carter pump. Hope I didn't made a mistake. What are the dimensions (diameter, height) of the Holley pump you use, Jack? The Carter pump is 5.5" high, but I can reduce her about 3/4" if I take flat head allens instead of the long mounting studs who come with it.

I also want to change all fuel lines to stainless braided Aeroquip hoses with Aeroquip connectors. I ordered a Quadrajet adapter fitting (1" to 6AN male), a 90 degree coupler (6AN female to 6AN female), and a fuel gauge adapter (6AN male/6AN male with 1/8" tread for fuel gauge). Now - not really "now", because I just ordered the parts, and they will need at least 3 weeks over the pond- now my carb's fuel "entrance" has a pressure gauge and shows in drivers direction. I'll have to choose either the left way around the carb, or the right way around the carb- back to the pump. On the right side is very much room while the left side would provide a much cleaner look, but there is the throttle linkage, and therefore very few room....decisions, decisions...

The very best way would be a tube instead of a hose from the front of the carb to the pump (rear of the carb). A tube would take less room. But how can I make these 37 degree seats at the end(s) of the tube? Is there a tool available to make these AN tube ends? If so- someone have a part # for me?

Also - how do I seal NPT adapters for fuel lines (reserve tank, fuel pump, fuel tank crossover hose) best? I use to seal oil line treads with teflon tape, but teflon tape particles are like poison for any carb. In the past I used it (very carefully) for fuel lines, too- but there must be something better available.

Our whole fuel system has 3/8" diameter connections - the carb, the stock pump, the main and reserve tank- except the fuel selector valve. This valve has 5/16" fuel line connections. The first time my bike had a 5/16" fuel line from the petcock to the FSV. Fits perfectly on the valve, but it was a pain in the ass to get the hose on/off the petcock. Most of the time it ended with bloody fingers, an angry Loaf, and an inch shorter hose, cause it was destroyed, and I had to cut it off.
:roll:

Then I took a 3/8" hose - fits perfectly at the petcock, but brought me a leaking connection at the selector valve from time to time, cause it's too big...grrrrrrrrrr!!!! :? Is this damn valve somewhere available with 3/8" hose barb connections? Or better - an all-brass, fuel resistant valve with 1/4 NPT treads for AN adapters? Sorry...I was dreaming.

Oh, and the petcock....don't know who it was, but someone posted about 2 years ago better not to use 5/16" hose for the fuel system. 3/8" would be better for flow reasons. I measured the petcock opening yesterday. We can use 5/16", and don't worry about flow - because the barb of the petcock sure is for a 3/8" fuel hose....but it has monster sized walls. The inner diameter is as large as 1/4"....heheheh...so a 5/16 hose shouldn't hurt- it's an improvement! Hehehe.... :lol:

I know a lot of you guys have AN hoses/connections at your fuel systems. I would be glad about some pictures. Especially the area around the carb.
Post them, or email them to me, please - [email protected]
I appreciate every good suggestion.

Thanks for reading,
Loaf
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H
Olaf ,

The Holley is about 5 1/4" high x 3 3/4 " wide at the base and 3 " deep at the base . The height of the pump is not a problem . There is plenty of room , but the clearance around the pump is kinda tight that's why I'm going to make a bracket to mount the pump from the base instead of the clamp bracket that comes with the pump. I think the Carter may fit in this area but may be more difficult to mount .

I have never heard that the Holley needs a pressure regulator but I am going to install a in line pressure gauge so I can see what the pressure is between the pump and the carb. and a see thru gas filter between the tank and the pump .

I'm not going to use any fancy fuel lines , just rubber . If they were exposed , that would be a different story .

They make a teflon paste or sealer if you don't trust the tape .

Jack
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N
I use the Holley Red pump and it does not require a regulator but the Holley Blue does if I'm not mistaken.

Chris
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H
Hey Loafer!!!

I mounted my Carter pump below my seat bracket. That is, in between the bell housing and the battery. Works great there and fits good too.


Hossie
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H
Hoss,

You forgot to mention that you have the small 680 battery that gave you the extra space .

Jack
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V
Wag & I both mounted the Carter on the cross tube under the seat with the stock batteries, they were tight but it worked and there is no heat transfer there. We then went to the large Odessy batts and got a bit more room.

Tim
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H
Olaf,

I have all the sheet metal off my Boss and I've tried fitting the Holley fuel pump in every nook and cranny it will fit . I've come to the conclusion the best place to mount it at least on my Boss is behind the left side cover , just above the front pulley , up close to the battery box . I will make a plate bolted to the side of the battery box base and bolt the bottom of the fuel pump to the plate . I'll make the plate large enough to hold the fuel pump relay. Also there will be room enough for my filter and pressure gauge in this area .

Jack
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H
Olaf,

I have all the sheet metal off my Boss and I've tried fitting the Holley fuel pump in every nook and cranny it will fit . I've come to the conclusion the best place to mount it at least on my Boss is behind the left side cover , just above the front pulley , up close to the battery box . I will make a plate bolted to the side of the battery box base and bolt the bottom of the fuel pump to the plate . I'll make the plate large enough to hold the fuel pump relay. Also there will be room enough for my filter and pressure gauge in this area .

Jack
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V
hossman said:
Hey Loafer!!!
I mounted my Carter pump below my seat bracket. That is, in between the bell housing and the battery. Works great there and fits good too.
Hossie
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Hossie,
this is the best place to mount it, but unfortunatly I already mounted my main solenoid right there. :?

HogV8 said:
Olaf,
I have all the sheet metal off my Boss and I've tried fitting the Holley fuel pump in every nook and cranny it will fit . I've come to the conclusion the best place to mount it at least on my Boss is behind the left side cover , just above the front pulley , up close to the battery box . I will make a plate bolted to the side of the battery box base and bolt the bottom of the fuel pump to the plate . I'll make the plate large enough to hold the fuel pump relay. Also there will be room enough for my filter and pressure gauge in this area .
Jack
Click to expand...
Jack,
there's very much room above the front pulley, but this is the place where I mounted my overflow cannister. Oh God - seems like I'm running out of room. My sheet metal is off the Boss, too. Including the tank. I will give my best to make the pump fit between dist and carb- hopefully with success...hehehehe...

Thanks for your replies. I'll let you know later how the story ended. First I'll have to have patience, because there is -as usual- one part in my Summit order backordered. Hope I get the parcel before Christmas :lol:

Loafster
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H
Olaf ,

My biggest concerns with mounting to pump between the dist. and the carb. are these . number 1 , heat from the engine , number 2 , it's so close to the petcock , there isn't much room for a in line filter between the petcock and the pump { I don't have the reserve tank or switch } and number 3 , if I ever have a problem with the pump it is not easily accessible under the tank . By mounting the pump above the pulley I will have room in this area for my pump relay, in line filter , in line pressure gauge and if the pump ever goes bad I can easily slip the old pump on because I will carry it just in case .

Jack
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Z
Loafy...What is the part number for the Carter pump you are using. Summit or Jegs. No pressure regulator required..correct? I still have my stock 2000 pump which has never let me down...YET and would like to go to a more reliable unit anyway.
Joe
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H
I don't know if the Holley Red is any better than the Carter , but I've seen them both and I think the Holley is a bet smaller and has more mounting options than the Carter . And no , the Holley Red does not need a regulator or a pressure gauge . I am installing a pressure gauge for my own satisfaction .

Jack
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V
Joe,
the Carter pump I ordered is #P4070:
http://store.summitracing.com/partdetai ... 70&FROM=MG

Jack is this the one, you have?:
Holley# HLY-12-801-1?
HLY-12-801-1
http://store.summitracing.com/partdetai ... holley+red

In fact - this one would be much easier to mount, cause it has
the fuel connections at the bottom, and not on the top- and
the electrical connections at the top - not like the Carter, which has
the wires at the bottom, what gives you a good chance for
a short circuit. The Holley is - without any doubts the better
choice. Seems like I ordered too fast. Sometimes it's better
to ask first. I'll sell the Carter in Ebay, and buy the Holley, too.
Jack- is it a must to wire it thru a relay? They claim it only
draws 2 amps. I would like to have not more electrical ****
in my bike than absolute required...

Loaf
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H
Olaf ,

Yes , that is the Holley Red that I have # HYL-12-801-1 . It does not require a relay but in the instructions they show how to wire it both ways , with and without a relay . However they do say wired with a relay is the preferred way to wire it . Again the reason I'm wiring mine thru a relay and installing a pressure gauge is for my own sastisfaction . Should work fine without either . Today I fabricated a mounting bracket or plate for the Holley and I think it is going to work great mounted above the front pulley .


Don't feel bad about not using everything you order . I wish I had a nickel for everything I've ordered and either sent back or not used . I have a attic full or Harley parts I either didn't use or used and didn't like . Every once in a while I gather up some of this **** and take it to a swap meet and unbelievably sell a lot of it .

Buy the Holley , I think you'll like it . I got to stop playing and start hunting . Been seeing a lot of big Bucks .


Jack
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V
Done - I sent an email to the Summit customer support,
and told them to delete the Carter pump, and add the
Holley HLY-12-801-1 to my order. I really hope that wasn't a too
fast decision again....

Loaf
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V
Jack,
I see you answered very fast. I'm glad that you have the HYL-12-801-1, too. So it seems like I didn't made a mistake again.

I ordered ton's of parts in the last couple of years. I don't need a lot
of them, but - that's funny- I don't wanna sell most of them... :lol:

Some parts are rare, and hard to find. My garage is like a Boss Hoss junk yard. Lot's of really nice parts from the beginning of Boss Hoss -the two old style bobbed fenders (like you have on your Boss), old style tanks, seats, some radiators, couple of different style side covers, wheels, brake rotors, and so on, and so on. I hope to be able to buy a cheap second "garage fire" or accident damaged Boss Hoss someday. :wink:

Loaf
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Z
I understand the Holley Red fuel pump has to be mounted upright. Does this mean actually at 90 degrees to the ground or can it be on a tilt? If this is a stupid question...it won't be the first or the last....Joe
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H
Joe ,

I'm not sure it has to be mounted perfectly vertical but take a look at the area behind your left side cover just above your front pulley . There is plenty of room to mount the Holley vertical here . I simply made a flat 1/8" alum . plate with a angle on one side and bolted the angle side of the plate to the side of the battery box . I then drilled holes in the plate to line up with the screws on the bottom of the pump , fits perfect . This may not be necessary but I made my mounting plate large enough to also mount a fuel pump relay and circuit breaker on the same plate . All it takes is a little careful measuring . I think it came out real nice and like I said before , if I were to ever have a problem everything will be right there very easy to get at .

Jack
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B
Jack,
Any chance of seeing a picture of the new setup? :wink:
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H
Here is a picture of my fuel pump and relay set up.

Jack
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