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Re: Hilborn EFI 512 Charger [Re: Stanton] #2674068
07/04/19 01:49 PM
07/04/19 01:49 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Originally Posted by Stanton
Originally Posted by Bad340fish
Originally Posted by Stanton
Quote
And so would the inlet air temps.


like almost every other car out there !! Besides, an efi adjusts for all that.


That it does, but it still reduces air density and therefore power.


The car has a/c, I doubt the small loss of power would be a concern. Personal experience tells me to keep everything under the hood and out of plain sight. Nothing attracts destructive morons than stuff peeking out of the hood. You never know when you're going to have to park it somewhere unattended for a while !!


When I sealed the cowl hood to the carb the car ran SO much better, especially in the summer heat 100* days,, A/C ON smile [ drivability, power] AFR's were more stable, the length of the runners is VERY important to my combination, 24" from the back of the intake valve to the end of runner, so yes it will stick out of the hood. I have surgery tomorrow so progress will stop for awhile.

Last edited by csk; 07/04/19 02:06 PM.

LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2674077
07/04/19 02:06 PM
07/04/19 02:06 PM
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Posts: 12,505
So. Burlington, Vt.
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fast68plymouth Offline
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What rpm is 24” tuned to on your combo?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2674088
07/04/19 02:23 PM
07/04/19 02:23 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Originally Posted by fast68plymouth
What rpm is 24” tuned to on your combo?


This has shown to be pretty close if the csa is close to correct from my dyno time. there are 3 pulses that can be used,
Bowling's Intake Runner Computator
Computation Results:
Input length is 24 inches
For 2nd harmonic, RPM range is from 4895 to 5940 with a pulse strength of 10 percent
For 3rd harmonic, RPM range is from 3678 to 4203 with a pulse strength of 7 percent
For 4th harmonic, RPM range is from 2867 to 3207 with a pulse strength of 4 percent


LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2676826
07/12/19 01:19 PM
07/12/19 01:19 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Don't work on the Charger after surgery they said, I can't help it lol 😁 injectors are now bolted on & starting to wire it all up.

efi30.jpgefi32.jpgefi33.jpg

LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2676830
07/12/19 01:33 PM
07/12/19 01:33 PM
Joined: Jan 2003
Posts: 12,505
So. Burlington, Vt.
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fast68plymouth Offline
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Makes a great visual statement smoke


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2677082
07/13/19 01:15 PM
07/13/19 01:15 PM
Joined: Sep 2003
Posts: 11,985
north of coder
moparx Offline
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Originally Posted by fast68plymouth
Makes a great visual statement smoke


you got that right ! up
beer

Re: Hilborn EFI 512 Charger [Re: moparx] #2678569
07/18/19 08:06 AM
07/18/19 08:06 AM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Short crappy video, but hey, it runs smile
https://youtu.be/_vVnfax2RQY


LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2678637
07/18/19 10:57 AM
07/18/19 10:57 AM
Joined: Sep 2003
Posts: 11,985
north of coder
moparx Offline
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did you jump on it any ? if so, how did it respond ?
or haven't you done any tuning ?
does sound good. up
beer

Re: Hilborn EFI 512 Charger [Re: moparx] #2678655
07/18/19 11:45 AM
07/18/19 11:45 AM
Joined: Jan 2003
Posts: 12,505
So. Burlington, Vt.
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fast68plymouth Offline
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Wow!!

Runs........ And .... drives!! up


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: moparx] #2678663
07/18/19 11:57 AM
07/18/19 11:57 AM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Originally Posted by moparx
did you jump on it any ? if so, how did it respond ?
or haven't you done any tuning ?
does sound good. up
beer


No tuning yet, will keep y'all posted.


LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2681001
07/24/19 05:04 PM
07/24/19 05:04 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Been doing some tuning, if you EVER go with EFI get the Dash/tuner, hand held ECT,,,,, the one I need is only$ 800.00 YEEHAAAA :), I also had to shorten the ram tubes, it was VERY hard to drive & see LMBO,, I will now use the 3rd & 4th intake pulse for power, total runner is now 17" long.

efi34.jpg

LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2688128
08/15/19 03:45 PM
08/15/19 03:45 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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I officially hate my hood now,a lot of hindsight AFTER the hole was cut, BUT I really had no choice. I'll get use to it maybe ,,,.to me it looks better without a hood.

efi37.jpg

LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2688132
08/15/19 04:01 PM
08/15/19 04:01 PM
Joined: Jan 2003
Posts: 12,505
So. Burlington, Vt.
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fast68plymouth Offline
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Honestly, I don’t love it.

I think a hole in a flat hood would look better.

On another note...... how’s the tuning going?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2688141
08/15/19 04:21 PM
08/15/19 04:21 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Originally Posted by fast68plymouth
Honestly, I don’t love it.

I think a hole in a flat hood would look better.

On another note...... how’s the tuning going?


I agree on the flat hood, as always its a money thing.
Tuning is going ok, the Holley HP is really not the correct choice for a Hilborn set up even though that is what they sell with the injector assy, it only has 1 o2 sensor to tune the ECU, it really should have at LEAST a bank one & bank two base fuel map that the ecu runs on. when the engine heats up all those throttle blades move & changes the calibration, I hooked up my Innovate wideband through a channel on the Holley ecu so I can at least datalog both o2's side by side & can manually tune the right bank to match the left bank Holley ECU wideband. wide open throttle is not a problem, its all the very light throttle low rpm areas that are tough to tune with 8 throttles & one o2 LOL. it idles like a stock cam 440 hp, can run 1500 rpms in overdrive & lock up the converter,,,, smooth as glass. the Dominator Holley ECU has two o2 sensors but you can only pick left or right or average of the 2 sensors for the ECU to tune off of.


LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2688152
08/15/19 04:48 PM
08/15/19 04:48 PM
Joined: Jan 2003
Posts: 12,505
So. Burlington, Vt.
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fast68plymouth Offline
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Planning on hitting the track in the fall?

How does the power “feel” compared to the old combo?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Hilborn EFI 512 Charger [Re: fast68plymouth] #2688156
08/15/19 04:58 PM
08/15/19 04:58 PM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Originally Posted by fast68plymouth
Planning on hitting the track in the fall?

How does the power “feel” compared to the old combo?


Yes when it gets cooler, we have been over 100deg its BRUTAL.
The but dyno says its pulling MUCH harder, even in the 100deg heat, my converter used to flash about 4200, now you nail it & its 5000. I hope the trans & or the converter are ok smile it does not feel like its slipping it just PULLS

Last edited by csk; 08/15/19 06:53 PM.

LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2688278
08/16/19 12:10 AM
08/16/19 12:10 AM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Doing some Data logging, its only 103deg, Love my A/C

Last edited by csk; 08/16/19 12:13 AM.

LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2688307
08/16/19 07:12 AM
08/16/19 07:12 AM
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Posts: 6,445
Tulsa OK
Bad340fish Offline
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Does the HP setup have a setting for the individual throttle blade system? I know my Megasquirt system has a mode for that individual throttle blades but I don't know what makes that different. What do you do for vacuum signal to the ECU? you have the cylinders all hooked together for an average or does it just read one cylinder?

I am a little surprised the HP system can't at least do some kind of modification bank to bank, how different are your readings side to side?

I feel you on the hood, when I went to a tunnel ram I went back and forth. Nobody could provide me with the measurements I needed to make sure things worked right(Hemi scoop or cowl). In the end I got a flat hood and cut a hole in it. I like the way it looks without the hood but it goes a little faster with the hood on.


68 Barracuda Formula S 340
Re: Hilborn EFI 512 Charger [Re: Bad340fish] #2688327
08/16/19 08:17 AM
08/16/19 08:17 AM
Joined: Aug 2011
Posts: 1,663
KATY TEXAS
csk Offline OP
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Originally Posted by Bad340fish
Does the HP setup have a setting for the individual throttle blade system? I know my Megasquirt system has a mode for that individual throttle blades but I don't know what makes that different. What do you do for vacuum signal to the ECU? you have the cylinders all hooked together for an average or does it just read one cylinder?

I am a little surprised the HP system can't at least do some kind of modification bank to bank, how different are your readings side to side?

I feel you on the hood, when I went to a tunnel ram I went back and forth. Nobody could provide me with the measurements I needed to make sure things worked right(Hemi scoop or cowl). In the end I got a flat hood and cut a hole in it. I like the way it looks without the hood but it goes a little faster with the hood on.


The o2 reads one bank, from cold to operating temp the engine & everything grows, it causes the throttle linkage to change from side to side, in my case it causes the pass side to start running leaner the warmer it gets so I have to run that side a little richer, The HP has sequential individual cyl tuning, but as far as closed loop the pass side is on its own, so I set it up for closed loop after 1800rpm. on the vacuum there is a little manifold block that has small lines from each cyl to it.


LINK TO MY STORY http://www.onallcylinders.com/2015/...s-to-build-brilliant-1968-dodge-charger/

512ci 9.7, Stealth heads, 3.54gear 4050lb,11.09@123.4 full street car trim.
Re: Hilborn EFI 512 Charger [Re: csk] #2688341
08/16/19 08:49 AM
08/16/19 08:49 AM
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S.E. Michigan
ZIPPY Offline
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Sounds and looks cool, good luck with it up

I wonder if a taller cowl wouldn't look okay.

PS. I noticed a slight change in the social media feed, it was expected long ago and no problem.
See you around here. wave


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