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9Likes
07-11-2016, 06:09 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,307
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Not Ranked
Do 8 Stack EFI or Weber Carbs Run Good On The Street?
Below is a artical I found while searching the web. This is only one.....websites review.
I've always liked the look, of stacked injection, especially with Cobras and GT-40's, but even with computers controling the system, how are these on the street ?
Why wouldn't these work as well as our daily drivers, are the aftermarket computers just not up to the task, ....yet, or it just depends on the company's computer software ?
Do 8 Stack EFI or Weber Carbs Run Good On The Street?
__________________
Regards,
Kevin
Last edited by FUNFER2; 07-11-2016 at 06:26 PM..
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07-11-2016, 06:34 PM
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CC Member
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Join Date: Dec 2010
Location: Tempe,AZ-High Point,NC,
AZ
Cobra Make, Engine: Kirkham #684, 482FE, Mike Mccluskey build
Posts: 2,520
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Not Ranked
Webber carbs every one says no. Efi works awesome as long as it's a multi port system.
__________________
PRIDEnJOY
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07-11-2016, 06:57 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,307
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Not Ranked
Carbs no, electronics stacked EFI yes ?
__________________
Regards,
Kevin
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07-11-2016, 07:05 PM
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CC Member
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Join Date: Dec 2010
Location: Tempe,AZ-High Point,NC,
AZ
Cobra Make, Engine: Kirkham #684, 482FE, Mike Mccluskey build
Posts: 2,520
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Not Ranked
I was advised to stay away from webers. Efi if it's a multi port system can be set up to run awesome. Just need an efi tuner who understands efi. The self learning I don't like.
__________________
PRIDEnJOY
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07-11-2016, 07:18 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,307
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Not Ranked
I'm confused. The type made by TWM/Borla is a webber carbed system, but compurterized, correct or am I missing to many brain cells ?
Since the fuel injectors are contained inside the throttle bodies, unlike other similar products.
__________________
Regards,
Kevin
Last edited by FUNFER2; 07-11-2016 at 07:23 PM..
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07-11-2016, 07:36 PM
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CC Member
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Join Date: Dec 2010
Location: Tempe,AZ-High Point,NC,
AZ
Cobra Make, Engine: Kirkham #684, 482FE, Mike Mccluskey build
Posts: 2,520
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Not Ranked
Webers are a type of carb. The Borla is efi that looks like weber carbs.
__________________
PRIDEnJOY
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07-11-2016, 10:19 PM
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CC Member
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Join Date: Jun 2001
Location: Mesa,
AZ
Cobra Make, Engine: ERA #2119 289FIA
Posts: 5,380
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Not Ranked
I've been running Weber 44 IDFs on my tiny SBF, I've put 14,000 miles on in 15 months of driving and once they were set up, have had no problems. Easy starting, great response, and a lot oh "holy sheetz" when the hood is open and people take a look. I've had it at sea level and at 10,000ft. elevation. Did notice less power at elevation, but not enough to worry me. Just had to be a bit more judicious in my passing decisions. That being said, I've never had stack injection (except the Crower mechanical on a C Altered 57 CHEVY, 45 years ago) I'd think the electronic stack would be the best of both worlds with its tune-ability and its uber cool appearance.
__________________
Karlos
"In the Land of the Pigs, The Butcher is King"
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07-11-2016, 11:15 PM
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CC Member
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Join Date: Dec 2010
Location: Tempe,AZ-High Point,NC,
AZ
Cobra Make, Engine: Kirkham #684, 482FE, Mike Mccluskey build
Posts: 2,520
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Not Ranked
A lot of guys with big blocks the 48 Ida is too small. I think the efi stack guys run bigger trumpets to get big power.
__________________
PRIDEnJOY
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07-11-2016, 11:25 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,794
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Not Ranked
Quote:
Originally Posted by fordracing65
A lot of guys with big blocks the 48 Ida is too small. I think the efi stack guys run bigger trumpets to get big power.
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Yes the 48 is too small, but you can buy 58 or 60 IDAs from Gene Berg.
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07-12-2016, 03:34 AM
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CC Member
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Join Date: Apr 2008
Location: Melbourne,
Vic
Cobra Make, Engine: Some polish thing... With some old engine
Posts: 2,286
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Not Ranked
Quote:
Originally Posted by Gaz64
Yes the 48 is too small, but you can buy 58 or 60 IDAs from Gene Berg.
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Hey Gaz,
Is it not true that:
48s are suitably sized for street on an FE, even a big bore FE.
The limitation here however is that 48s will choke the engine starving it of air at high rpm. Therefore they are at their best in midrange power delivery, street flowing circuit type course use, as opposed to drag racing or oval track.
The 58s from Gene Berg that cost a motza (and are out of stock) shift the power to a higher rpm range, and intact could adversely affect street driving in the common low to middle band experienced in street driving, by reducing air velocity.
Or is my humble research ill informed?
Are you able to kindly clarify this?
On another note: I believe webers ARE workable for a street engine. EFI or otherwise. The only limitation is the the time energy money and inclination one has to invest it them. For a car that's driven as infrequently as most Cobras are, I've placed them in the who could be farked category, for now. As I'm unlikely to drive them often enough and far enough to resolve and sort the issues.
That said I still do find myself tempted. :
Thanks in advance.
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07-12-2016, 03:36 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Shasta Lake,
CA
Cobra Make, Engine:
Posts: 26,564
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Not Ranked
I have the Mega Squirt fuel injection on my Coupe and like it. I did have the power cut back on the engine when I quit racing it and it works very well on the street and in our mountain roads.
Ron
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07-12-2016, 05:14 AM
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CC Member
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Join Date: Dec 2012
Cobra Make, Engine:
Posts: 973
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Not Ranked
I'm just going to put this lil' photo here. Lot's left to do before this engine is where I want it, but for now it starts easy, idles at 6-700 RPM and is super easy off the line and put putting around town. Pretty much the opposite of what the article suggests. Hell, I don't even use 1st gear unless trying to go up a hill off idle. The article talks mostly about Weber carbs as opposed to EFI, though.
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07-12-2016, 05:42 AM
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CC Member
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Join Date: May 2008
Location: Wilmington,
DE
Cobra Make, Engine: Classic Roadster, 302, roller cam, Holley 650
Posts: 553
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Not Ranked
All you need to do is drive the car harder. The webers do not like to be dogged around town. An occasional "Italian" valve job does wonders.
__________________
The one line never heard in heaven; "Gee, I wish I had spent more time in the office."
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07-12-2016, 07:00 AM
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CC Member
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Join Date: Sep 2013
Location: Memphis,
TN
Cobra Make, Engine: SPF#1867 , KC427
Posts: 429
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Not Ranked
There is a company name Fitech that has been in the EFI background on the OEM side. I read many of their reviews on different forums and have found almost nothing but positive reviews.....that is strange. These guys don't have a EFI version of stack injection but they offer many throttle body EFI setups and are releasing a multi-port setup. This may be an option you want to check out.
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07-12-2016, 09:02 AM
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CC Member
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Join Date: Sep 2008
Cobra Make, Engine: csx4163 full comp alu. body
Posts: 368
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Not Ranked
Any engine has to have all the parts working together. Know many who use T.W.M 8 stack including two I have running. Have had one in csx car for 8 years on road, idles 700 rpm and takes off from stop as good as zo6. Just had in parade for hour hauling Gene Winfield, stop and go for miles. Engine is 468 f.e. built by Kroyer in Las Vegas. Know of at least 12 more engines built by them with same injection setup. Just picked up engine from Rex Racing and putting in Bennett car now. Had engine freshened up and put older T.W.M. setup I had on engine, makes over 500 lbs torque at 2500 rpm up to limit of 6500, will fine tune on dyno and street. Expect second car to run as good as first. Csx car has Motec controller and Rex Engines likes to use Holley controller. Ran good on Engine dyno, will see how works on street, don't expect any problems.
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07-12-2016, 01:53 PM
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CC Member
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Join Date: Aug 2013
Location: Los Altos Hills,
CA
Cobra Make, Engine: Superformance MkIII (2995), Ford 460/521, Ted Taormina build
Posts: 118
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Not Ranked
I'm very happy with the Webers (four 48IDA's) on my 521 big block. Once we got them dialed in (about two years and 5000 miles ago) they have been great since. I would not go back to the single Holley that they replaced. Throttle response is quicker, car feels faster, starts right up hot or cold, and it doesn't suffer from the run-on (dieseling) I got with the Holley.
Quote:
Originally Posted by FUNFER2
Below is a artical I found while searching the web. This is only one.....websites review.
I've always liked the look, of stacked injection, especially with Cobras and GT-40's, but even with computers controling the system, how are these on the street ?
Why wouldn't these work as well as our daily drivers, are the aftermarket computers just not up to the task, ....yet, or it just depends on the company's computer software ?
Do 8 Stack EFI or Weber Carbs Run Good On The Street?
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07-12-2016, 02:08 PM
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CC Member
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Join Date: Jan 2009
Location: Las Vegas,
NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
Posts: 5,535
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Not Ranked
Quote:
Originally Posted by Gary(SF)
I'm very happy with the Webers (four 48IDA's) on my 521 big block. Once we got them dialed in (about two years and 5000 miles ago) they have been great since. I would not go back to the single Holley that they replaced. Throttle response is quicker, car feels faster, starts right up hot or cold, and it doesn't suffer from the run-on (dieseling) I got with the Holley.
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Do you find the linkages to be stable? I've heard that many folks have to rebalance them frequently. A friend, not a tinkerer, eventually gave up trying to set them up but I think he was using a cheap vacuum cap.
__________________
Cheers,
Tony
CSX4005LA
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07-12-2016, 02:19 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,307
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Not Ranked
Can you run a big cam, with little in the way of vacuum ?
__________________
Regards,
Kevin
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07-12-2016, 03:06 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,794
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Not Ranked
I've built a few weber carbed engines of different capacities from 75 - 360 CI.
Each one runs smoother and pulls from lower rpm better than anticipated.
One was so smooth, almost EFI like with a 245 @ .050 camshaft.
It is all about combination.
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07-12-2016, 03:17 PM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,794
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Not Ranked
Quote:
Originally Posted by Dimis
Hey Gaz,
Is it not true that:
48s are suitably sized for street on an FE, even a big bore FE.
The limitation here however is that 48s will choke the engine starving it of air at high rpm. Therefore they are at their best in midrange power delivery, street flowing circuit type course use, as opposed to drag racing or oval track.
The 58s from Gene Berg that cost a motza (and are out of stock) shift the power to a higher rpm range, and intact could adversely affect street driving in the common low to middle band experienced in street driving, by reducing air velocity.
Or is my humble research ill informed?
Are you able to kindly clarify this?
On another note: I believe webers ARE workable for a street engine. EFI or otherwise. The only limitation is the the time energy money and inclination one has to invest it them. For a car that's driven as infrequently as most Cobras are, I've placed them in the who could be farked category, for now. As I'm unlikely to drive them often enough and far enough to resolve and sort the issues.
That said I still do find myself tempted. :
Thanks in advance.
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Yes all true, up to a point.
I agree the 48s are good for mild to slight aggressive street manners, but on a big engine will limit top end.
Here is some beautiful 58s of a fellow member:
58 mm Berg IDA Carbs--Here They Are
Gary
Last edited by Gaz64; 07-12-2016 at 03:25 PM..
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