Edelbrock Elbow
07-22-2009, 08:14 AM
#1
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Edelbrock Elbow Has anyone used an Edelbrock low profile elbow. Does it clear the cowl like the intakeelbows.com elbow. I am getting ready to do a Vic Jr on my car.
07-22-2009, 10:57 AM
#3
Nasty, got any data to support this claim? Even if it were the restriction(only the ultra-low profiles are at all btw)....it's a FI motor...and once it's pressurized, all bets are pretty much off.
I'm looking forward to your data to support your claim though! What did you get on the flowbench vs a intakeelbows.com setup?
07-22-2009, 11:38 AM
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Also, two things to think bout.
If you creat a restriction that causes a pressure rise, as the air passes through the restriction it expands as it moves to teh low pressure side and gets colder because of the expansion.
Second......ever see a power plate that is on almost every turbo buick on the planet by now? It appears to be a HUGE restriction but in every case the car goes quicker....huh.
If you creat a restriction that causes a pressure rise, as the air passes through the restriction it expands as it moves to teh low pressure side and gets colder because of the expansion.
Second......ever see a power plate that is on almost every turbo buick on the planet by now? It appears to be a HUGE restriction but in every case the car goes quicker....huh.
07-22-2009, 11:40 AM
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I was thinking of doing the low profile not the ultra low. It looks about the same measurements as the intakeelbows.com one. I like the idea of a cast piece.
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07-22-2009, 12:55 PM
#9
The ultra low fits with no modifications whatsoever and clears stock hoods. The low profile is REALLY close to the metal part of the cowl facing forward, but i think you'll run into hood clearance issues. the high flow profile will require ALOT of cutting. I run the low profile backwards with the cowl cut back and re-fabricated.
07-22-2009, 01:45 PM
#10
Nasty, got any data to support this claim? Even if it were the restriction(only the ultra-low profiles are at all btw)....it's a FI motor...and once it's pressurized, all bets are pretty much off.
I'm looking forward to your data to support your claim though! What did you get on the flowbench vs a intakeelbows.com setup?
I'm looking forward to your data to support your claim though! What did you get on the flowbench vs a intakeelbows.com setup?
https://ls1tech.com/forums/10634828-post7.html
https://ls1tech.com/forums/10660153-post19.html
https://ls1tech.com/forums/10660796-post23.html
https://ls1tech.com/forums/10668160-post28.html
https://ls1tech.com/forums/11216234-post64.html
ok guys i like this thread... so bought a vic jr and edel elbow it killed my car. at the time my built heads cam 346 dynoed 360hp 306 tq .. i see now where it all went (in the elbow)... but one other problem i had... when tuning them to 12.5 to 13 to 1 they were fine ran great... but over time they kill plugs. and went rich... almost like they were developing vacuum leaks? has anyone had this problem? i tried this on two diff cars and both of them had same problem.. i was ready to throw this thing in trash... so do u guys think i should buy another elbow or throttle body and will fix my problem and pick up hp over my ls6 this time on my current set up in my sig... i really hate to throw any more money into this paper weight.. unless it works this time
07-22-2009, 02:06 PM
#11
[QUOTE=nastychevelle;11947782]these are what i was referring to
You used this guys results for three of your refrences, so i'll make it simpler and just reply to it all at once. They are speaking about an ultra-low, not a low. Two different animals with very different cfm flow rates. The OP was not asking about a ultra-low. Again, no real data other than a claim of 90hp improvement. If you think a 500rwhp picked up 90rwhp just from a elbow restriction....I have a shamwow to sell you. MAYBE if we're talking a 1800rwhp car, but that's just completely unrealistic to be THAT huge of a restriction. Remember that was not a FI car either. I do not doubt however, that the ultra low did not perform as well as the intakeelbows.com version. They are not an even comparison. Try comparing a low profile version to the intakeelbows.com one though. Much more comprable in my opinion. But, opinions are worthless right?
That's an opinion with no supported research. No different than you saying that.
Any elbow does that, the edelbrock just has a divider to better ditribute the airflow. If anything, the Edelbrock is the better option according to that quote. This post was also a opinion, not data.
Let's throw some real data out there to inspire this thread a little. Lets throw out the window that this is FI and not a Na/nitrous application(even though that should be a major point).
Pure CFM rates and air-flow charachteristics:
From Jason@Edelbrock:
Now, let's see some pretty pictures to support his claim of air distribution:
I wonder how well that sheetmetal one is doing of distributing air....Particularly in a NA application.
I see the above in bold as a concern for me just as much as the intake being a restriction. Sounds to me something wasn't set up right(maybe a vacuum leak somehow??) His problems suck indeed! I am happy he got them sorted out! If I were building a N/a or nitrous motor(which his screen name implies), there is no way I'd run a elbow of any sort, it would definately have a card style accufab or the likes and a hat-filter for street cruising.
Let's throw some real data out there to inspire this thread a little. Lets throw out the window that this is FI and not a Na/nitrous application(even though that should be a major point).
Pure CFM rates and air-flow charachteristics:
From Jason@Edelbrock:
The divider is in the elbow to appropriate the air in the plenum. These were engineered using computational fluid dynamics to look at airflow distribution. Air will follow the path of least resistance and without the divider the air will push to the back of the elbow and back of the intake.
Is it restrictive? Sure, kind of. This elbow will flow less air than the taller versions; we engineered it to flow as much air as possible while providing hood clearance - flow is 860cfm @ 20.5" h2o . Our taller versions flow more air; #3848 (950 cfm) and 3849 (1,050 cfm) with a 90mm throttle body.
Ultimately if you are pressurizing the intake manifold, your air distribution shouldn't be an issue. And again, the divider actually helps the airflow and distribution.
If you can get away with a taller version (hood change) than you will be able to flow more air and make more power with the mid or tall versions.
Is it restrictive? Sure, kind of. This elbow will flow less air than the taller versions; we engineered it to flow as much air as possible while providing hood clearance - flow is 860cfm @ 20.5" h2o . Our taller versions flow more air; #3848 (950 cfm) and 3849 (1,050 cfm) with a 90mm throttle body.
Ultimately if you are pressurizing the intake manifold, your air distribution shouldn't be an issue. And again, the divider actually helps the airflow and distribution.
If you can get away with a taller version (hood change) than you will be able to flow more air and make more power with the mid or tall versions.
Now, let's see some pretty pictures to support his claim of air distribution:
I cannot answer that question with any difinitive data. At 19 psi, when you go into boost that intake should be pressurized and pushing air through all runners.
The links below are actual cfd images of one of our new elbows with and without a divider; the difference is very clear.
The links below are actual cfd images of one of our new elbows with and without a divider; the difference is very clear.
I wonder how well that sheetmetal one is doing of distributing air....Particularly in a NA application.
ok guys i like this thread... so bought a vic jr and edel elbow it killed my car. at the time my built heads cam 346 dynoed 360hp 306 tq .. i see now where it all went (in the elbow)... but one other problem i had... when tuning them to 12.5 to 13 to 1 they were fine ran great... but over time they kill plugs. and went rich... almost like they were developing vacuum leaks? has anyone had this problem? i tried this on two diff cars and both of them had same problem.. i was ready to throw this thing in trash... so do u guys think i should buy another elbow or throttle body and will fix my problem and pick up hp over my ls6 this time on my current set up in my sig... i really hate to throw any more money into this paper weight.. unless it works this time
Last edited by tim99ws6; 07-22-2009 at 02:12 PM.
07-22-2009, 02:34 PM
#13
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Also Wilson claims the dividers help when I chatted with them on the phone. They say that they actually build up the inside of the manifold to get the same results as the divider. It is a must on Boosted applications to get even cylinder flow. This is what Wilsons told me.
So I just ordered the low profile elbow. Will let everyone know how it fits and works. I have a older WS6 hood so hood clearance should not be a problem. If it is its only like 100 bucks so who cares.
So I just ordered the low profile elbow. Will let everyone know how it fits and works. I have a older WS6 hood so hood clearance should not be a problem. If it is its only like 100 bucks so who cares.
07-22-2009, 03:09 PM
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Don't know if this helps or if anyone cares, but used the ultra low profile edelbrock on a Fi 408 and made close to 900rwhp prior to injector/beltslip/intercooler restriction/ issues.
Cleared a stock SS hood with no mods.
Cleared a stock SS hood with no mods.
