Author Topic: Hilborn plumbing  (Read 9780 times)

Offline gasserx

  • Full Member
  • ***
  • Posts: 192
    • View Profile
  • Your Best Time: 1/4 - 9.08
  • Your Track: Gardermoen Raceway
  • Your Vehicle: 180" FED
Hilborn plumbing
« on: May 12, 2015, 01:38:49 PM »
Im close now...just need to make fuel-lines and figure out how do connect every thing.. :)

So; i have a mechanical stack injection from Hilborn. It was not complete when i got it, so i had to order a new pump and some accessories.
I got a device (by advice) that has a highspeed by-pass, shut of valves etc... All in all it has 5 outputs. Two for by-pass?, one inlet and two out? Then it also looks like there should be a by-pass from the metering valve? Why do i need three by-passes? And can i hook this up in a way to avoid welding additional bungs and adding "lots" of fuel lines.
Fuel tank has two outputs now, a large one for fuel out, and a smaller one that i guess was used for highspeed by-pass - since it had a fuelpump connected to it.
The shut of valve is supposed to be cable operated, right?

dreracecar

  • Guest
Re: Hilborn plumbing
« Reply #1 on: May 12, 2015, 02:55:04 PM »
One should be your seconadry bypass(poppet with a lite spring)
the other should be a jet holder with a heavier spring & poppet with some shim rings- that will be your hi-speed.
and the last one is your main jet can

 all three can be tied together and returned back to the tank or you can run the main jet seperate and the secondary and hi-speed combined (opperate at different times) back to the tank.

Your fuel pump shut-off should have an inlet and 2 outlets, the top being the main feed to the BV and the side should be tied to the main jet return so when the fuel is shut off the fuel circulates back to the tank instead off dead-heading the pump while the RPM comes down

Offline BK

  • Sr. Member
  • ****
  • Posts: 310
    • View Profile
  • Your Best Time: 8.45 / 5.30
  • Your Track: Empire Dagway
  • Your Vehicle: Late 70's FED
Re: Hilborn plumbing
« Reply #2 on: May 12, 2015, 07:15:51 PM »
The link should take you to a schematic of what your looking for. Its from the Kinsler web site. I buy all my FI stuff from FIE. But the Kinsler site has a lot of info. http://kinsler.com/images/CATALOG/Cat_32_Whole_PDF/Cat_32_4_09_WholeSec.pdf

Offline H.G. Wells

  • Full Member
  • ***
  • Posts: 116
    • View Profile
  • Your Engine: Mild 383 SBC or 498 blown BBC
  • Your Track: Currently San Antonio, past Amarillo, Ardmore OK, Noble OK
  • Your Vehicle: late 60's FED of unknown origin
Re: Hilborn plumbing
« Reply #3 on: May 12, 2015, 07:56:44 PM »
BK thanks for posting that, I looked for it earlier in response to this thread and could not find it.
That is exactly where I started with mine. Lots of good info there.
Racecar spelled backwards is racecaR

Offline Roger

  • Full Member
  • ***
  • Posts: 183
    • View Profile
  • Your Vehicle: 125 inch Altered
Re: Hilborn plumbing
« Reply #4 on: May 12, 2015, 08:04:02 PM »
Here's a couple of shots of my Hilborn unit. The main jet is closest to the pump and the hi-speed is furthest away. The seconday bypass is capped off at the metering block. The return from the main and hi-speed returns to the fuel inlet line just before the pump (it's out of the picture). Hope this helps.

Offline gasserx

  • Full Member
  • ***
  • Posts: 192
    • View Profile
  • Your Best Time: 1/4 - 9.08
  • Your Track: Gardermoen Raceway
  • Your Vehicle: 180" FED
Re: Hilborn plumbing
« Reply #5 on: May 13, 2015, 06:25:48 AM »
Thanks guys, but i got to get home and get overview before i can say i understand ;) I'll post a pic later.

Offline gasserx

  • Full Member
  • ***
  • Posts: 192
    • View Profile
  • Your Best Time: 1/4 - 9.08
  • Your Track: Gardermoen Raceway
  • Your Vehicle: 180" FED
Re: Hilborn plumbing
« Reply #6 on: May 13, 2015, 08:11:31 AM »
Here

Offline gasserx

  • Full Member
  • ***
  • Posts: 192
    • View Profile
  • Your Best Time: 1/4 - 9.08
  • Your Track: Gardermoen Raceway
  • Your Vehicle: 180" FED
Re: Hilborn plumbing
« Reply #7 on: May 14, 2015, 01:48:27 AM »
Here's a couple of shots of my Hilborn unit. The main jet is closest to the pump and the hi-speed is furthest away. The seconday bypass is capped off at the metering block. The return from the main and hi-speed returns to the fuel inlet line just before the pump (it's out of the picture). Hope this helps.

got any bigger pics Roger ? :) They are supersmall, even if i click on them...

Offline LZ

  • Full Member
  • ***
  • Posts: 210
    • View Profile
  • Your Engine: In progress
  • Your Track: Empire Dragway
  • Your Vehicle: 2010 225" S&W
Re: Hilborn plumbing
« Reply #8 on: May 14, 2015, 02:45:34 AM »
Gas way off topic but.....  :-[

How did you get such a lovely photo up like that??  I have trouble on this site getting good photos up. Ya I know Im a looser Glenn. But every time I resize them they get all chopped and grainy.

sorry and thanks
Luke
"I am not a number.... I am a free man."

Offline JeffV8

  • Sr. Member
  • ****
  • Posts: 259
    • View Profile
  • Your Track: Quaker city
  • Your Vehicle: 164" Woody Gilmore Flexie
Re: Hilborn plumbing
« Reply #9 on: May 14, 2015, 04:56:02 AM »

Offline Roger

  • Full Member
  • ***
  • Posts: 183
    • View Profile
  • Your Vehicle: 125 inch Altered
Re: Hilborn plumbing
« Reply #10 on: May 14, 2015, 07:07:00 AM »
Here's a larger picture.

Offline gasserx

  • Full Member
  • ***
  • Posts: 192
    • View Profile
  • Your Best Time: 1/4 - 9.08
  • Your Track: Gardermoen Raceway
  • Your Vehicle: 180" FED
Re: Hilborn plumbing
« Reply #11 on: May 19, 2015, 10:45:28 PM »
Gas way off topic but.....  :-[

How did you get such a lovely photo up like that??  I have trouble on this site getting good photos up. Ya I know Im a looser Glenn. But every time I resize them they get all chopped and grainy.

sorry and thanks
Luke

I upload my photos to my personal website, then just paste the URL into my post on here.

Offline gasserx

  • Full Member
  • ***
  • Posts: 192
    • View Profile
  • Your Best Time: 1/4 - 9.08
  • Your Track: Gardermoen Raceway
  • Your Vehicle: 180" FED
Re: Hilborn plumbing
« Reply #12 on: June 02, 2015, 10:38:54 PM »
I think i have the fuelsystem sorted now, just need to get a couple of bungs tig`ed together on the return and the fuel is in place!