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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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 Posted: Thu Nov 26, 2009 12:48 pm Post subject: Hilborn throttle bodies and EFI |
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I have a set of hilborn throttle bodies ..thinking about adapting them to use EFI injectors.. has/can this be done?
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earthquake
Samba Member
Joined: January 10, 2008
Posts: 3984
Location: SANDY VALLEY, NEVADA
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| Posted: Thu Nov 26, 2009 1:15 pm Post subject: |
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Yes, it can be done. you have to machine the manifolds to accept new injectors, add a TPS [throttle position sensor] to one of the throttle shafts, make fuel rails to hold the injectors in place with a return to the fuel tank or build a surge tank [I like the surge tank idea because you dont have run a return line to the main fuel tank] and then you will need some sort of EFI system to control it all [SDS, Megasquirt, electamotive...]
It would make for a cool looking "60s style Old School Gasser" car.
Earthquake
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koolkarmakombi
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Joined: June 26, 2007
Posts: 238
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| Posted: Thu Nov 26, 2009 8:35 pm Post subject: |
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| or keep it mechanical! |
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Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20377
Location: Just a tiny bit west of Yosemite Valley
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| Posted: Thu Nov 26, 2009 9:28 pm Post subject: |
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Just do it...
Dale
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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| Posted: Thu Nov 26, 2009 10:42 pm Post subject: |
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If racing is the only intention, keep it mechanical. If it will be driven on the street, convert to EFI.
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Fri Nov 27, 2009 6:05 pm Post subject: |
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| miniman82 wrote: |
| If racing is the only intention, keep it mechanical. If it will be driven on the street, convert to EFI. |
Street car, this is why i wanna go EFI.. I have a CB hideaway turbo setup that i want to use too. however, the throttle shafts on the hilborns aren't very well sealed. i suppose it will only leak air though. |
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lostinbaja
Samba Member
Joined: December 19, 2004
Posts: 4036
Location: Frankfort, Illinois
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| Posted: Fri Nov 27, 2009 7:14 pm Post subject: |
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Machine the TB's for throttle shaft seals.
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Jerry...
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woodsbuggy
Samba Member
Joined: December 15, 2007
Posts: 210
Location: NE Indiana
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| Posted: Fri Nov 27, 2009 10:32 pm Post subject: |
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I realize that your your current system is not pristine. But you have a piece of history. Please do not destroy it. There are many other options, motorcycle, CB and many others. I do not know where to buy parts for mechanical fuel injection, but there are many places to buy parts for EFI. Dont't get me wrong, I think EFI is the way to go, but please don't trash a piece of history to do this.
Thanks
Kenric
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lostinbaja
Samba Member
Joined: December 19, 2004
Posts: 4036
Location: Frankfort, Illinois
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| Posted: Sat Nov 28, 2009 5:26 am Post subject: |
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I would bet there are more Hilborn throttle bodys then Weber IDA's in this country. My neighbor races Midgets & Sprint cars and he has a big box of broken T/B's and a bigger box of good T/B's and every Midget shop I have been in with him, is the same way. You can keep them pristine so some day a Midget car mechanic will get his hands on and install it on a race car so it can get snapped off in a wreck and thrown in the big box of broken T/B's.
Convert them, use them and enjoy them.
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Jerry...
If it's being towed, it must be a trailer!
"Vee Grow Too Soon Oldt Und Too Late Schmardt"
RIP Morgan
My photos
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Mon Nov 30, 2009 2:33 pm Post subject: |
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| woodsbuggy wrote: |
I realize that your your current system is not pristine. But you have a piece of history. Please do not destroy it. There are many other options, motorcycle, CB and many others. I do not know where to buy parts for mechanical fuel injection, but there are many places to buy parts for EFI. Dont't get me wrong, I think EFI is the way to go, but please don't trash a piece of history to do this.
Thanks
Kenric |
buy me some efi throttle bodies and you can have these. 
| lostinbaja wrote: |
would bet there are more Hilborn throttle bodys then Weber IDA's in this country. My neighbor races Midgets & Sprint cars and he has a big box of broken T/B's and a bigger box of good T/B's and every Midget shop I have been in with him, is the same way. You can keep them pristine so some day a Midget car mechanic will get his hands on and install it on a race car so it can get snapped off in a wreck and thrown in the big box of broken T/B's.
Convert them, use them and enjoy them. |
actually, i got these in a parts deal from a vintage midget racer.
anyone know where i can get some fuel injector bungs to weld in? |
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Mr. Electric Wizard
Samba Member
Joined: August 07, 2003
Posts: 2846
Location: Smyrna, TN
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| Posted: Mon Nov 30, 2009 2:42 pm Post subject: |
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Damn, back when I was hot and heavy into designing my EFI setup I found a place that had the weld in bungs.
Can't friggin remember for the life of me where it was though...
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Stripped66
Samba Member
Joined: May 31, 2005
Posts: 3469
Location: Charleston, SC
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| Posted: Mon Nov 30, 2009 3:03 pm Post subject: |
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| Mr. Electric Wizard wrote: |
Damn, back when I was hot and heavy into designing my EFI setup I found a place that had the weld in bungs.
Can't friggin remember for the life of me where it was though... |
Jegs, Summit, EBay, just about any shop that has tubing and flanges for custom intake/exhaust fabrication.
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| 66brm wrote: |
| Bodacious wrote: |
| Why not just make a custom set of wires with a Y splice in them. Then you could just run one distributor. |
I don't think electrickery works that way |
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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elturbobug
Samba Member
Joined: December 04, 2008
Posts: 6
Location: Hell Yeah Texas
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| Posted: Tue Dec 01, 2009 3:58 am Post subject: |
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There is a good chance that you can just have a machine shop machine the existing bungs out to the correct configuration. I was able to do it on my CROWER injection manifolds. Then you just have to make a fuel rail and retainer.
[/img]
Rob |
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risk
Samba Member
Joined: June 24, 2004
Posts: 710
Location: Stumpbroke, Arkansas
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| Posted: Tue Dec 01, 2009 7:34 am Post subject: |
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| elturbobug wrote: |
There is a good chance that you can just have a machine shop machine the existing bungs out to the correct configuration. I was able to do it on my CROWER injection manifolds. Then you just have to make a fuel rail and retainer.
Rob |
Is that a turbo hat? |
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