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Thread: Ported Throttle Body Testing
01-14-2010, 09:24 PM #1
Ported Throttle Body Testing
I finally did a few tests on some throttle bodies on my car last night. Was pretty surprised at one of the tb's and how it did. All testing was started with coolant temps at 180*'s and the blower just barely warm to the touch. Probably about 15 minutes in between each run. We didn't log IAT's and such just because I really didn't think it would show a whole lot. So here's what was tested....
1. Ported Dragon
2. Ported Accufab
3. Ported Stocker
4. I'm looking for a nonported Stock tb/plenum locally to put it on the car because it's still strapped down on the dyno before my blower comes off and the Project Eaton goes on.
__________Peak______bled down to
HP and TQ at 4700 rpm's
HP at 6200 rpm's
The Ported Stocker and the Accufab pretty much had identical graphs in that they both peaked lower than the Dragon and pretty much made the exact same numbers as you can see above. Pretty hard to believe but the car was cooled the same and we made 2 pulls with all of them and they repeated. The Dragon made the best numbers, most boost seen, peaked higher in the rpm's, and carried it out better than the other two. I thought the Accufab would pretty much dyno the exact same as the Dragon. Also that's my personal Accufab and it's ported as much as possible without any welding. Same for the Dragon and the Ported Stocker as in no welding.
Last edited by Posi; 01-14-2010 at 09:37 PM.VMP TVS. 2.8 from VMP and a 6lb Combo by Metco - JLT RAI - SCT Big Air 3000 - Dragon T/B - 80lb inj's - Single Modified FPDM - Twin GT pumps -bap- Afco dual pass H/E - LMM Air Bags in rear - High Boost Overlay - Kooks 1 5/8 Lt's - Kooks o/r x-pipe - Borla Catback - Head cooling mod - SCT X-Cal - 5 Gallon IC Resivoir - Fully Built 8.8 Solid Axle - Weld Wheels - 28" Mickey Thompson Stiff Walls - TF Victory Wheels- Posi ported lower intake - Autometer Phantom Boost & Fuel pressure gages-Built 4R70W by FB Performance-Transbrake...
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742hp through an Auto.
01-14-2010, 09:26 PM #2
Non Ported Stock tb/plenum
Peak was down 27hp and the torque was down 16ft. lbs compared to the Ported Dragon Peaked at about 5,800 also.
01-14-2010, 09:29 PM #3
Here's the Graph comparing the Accufab and the Dragon. I would assume you guys are as surprised at the outcome of this as me. I'm kind of baffled that the Accufab was this far behind.
01-14-2010, 09:30 PM #4
interesting....cant wait to see the rest!99 Rio Red Cobra-Built Eaton swapped Street Car
01-15-2010, 09:10 AM #5
Alright the last two graphs I have on this.
First one is just the non ported stock tb/plenum and then the second one is comparing the non ported stocker against the Ported Dragon tb/plenum to show that also.
01-15-2010, 12:16 PM #6
- Join Date
- November 2008
- Houston, TX
Brian when you note port stocker, what all is ported? Did you just polish up and TB and leave the blades alone, or did you pull the blades bore and add larger TB buterflys?
Also did you use the plenums for each TB, or just one and changed out the TB? Were the plenums ported as well? I assume so, but still wanted to check.
Any chance you going to test a BF TB and plenum?
Reason I ask I may ditch the idea of a BF TB and plenum and just go with the stock ported TB and welded/ported plenum I have.
To be honest I am not suprised how well the ported stocker worked, because another thing that few people consider in testing is velocity. Yes a SBTB will add CFM, but a ported stock TB will add some CFM, but maintain a higher velocity of air entering the engine due to the split TB openings.
Ask any professional that ports head, bigger is not always better if you not moving that air.
01-15-2010, 01:17 PM #7
Ported stocker consists of the Throttle Body being massaged for more flow the but the Bore's stay the same size as stock. Plenum is ported also.
Every throttle body was ran with it's own Plenum. Accufab tb with its plenum and so on.
Testing is over now because the Ported Eaton Project is going on the car. I guess I could test a Billet Flow but I'd have to find one, port it, and get before numbers off the new blower again. So I doubt I'll be testing one anytime soon.
01-15-2010, 05:59 PM #8
01-16-2010, 09:11 AM #9
If I can get the car back over there I'll send you a pm and try to test it. Then for you letting me borrow it if I saw anywhere to cut I'd port it some more before it went back out to you for free.
01-16-2010, 09:28 AM #10
I know when I first got the BF TB I couldn't believe that the plate wasn't the size of the opening like the Dragon is. I had the BBK twin 62mm on a stock elbow before. After I did a little math the BBK had the same surface area as the BF? In other words I the only thing I bought was a better elbow and better throttle response. The BBK was jumpy.
Though I have to admit I can't believe the accufab was that restrictive?
01-16-2010, 05:37 PM #11
^I'm baffled on the Accufab also as I'm sure a lot of other people are too.
If I can somehow figure out how to set some testing up again for the BF I'll pm you and let you know. After this week though I'm dyno'd out for a while.
01-17-2010, 11:32 AM #12
I am aware that Dragon is now making Terminator TB/ plenums
and it has the IAC underneath.
First, got any pics of one? The Dragon site does not really show it with the IAC installed.
Also, to what do you attribute the extra power over the others?
Thanks.100% Hand built 2004 Cobra (Body in white)
Boss 330 built 5.4 32V, Boss 290 lower, US/Aussie upper,
T56, 04 IRS, LT's, full interior and options
404 RWHP/ 387 RWTQ NA 26.56 MPG
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Developer of 5.4 32V NA swap kits for SN95 and New Edge
Change it back 2012......
01-18-2010, 11:45 AM #13
01-24-2010, 04:07 PM #14
did you have idle problems with dragon??? I cant get mine under 1300 rpm....In loving memory of Jenna Eades.
Cobra Mods:hp= new # torque=new #
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01-25-2010, 08:11 AM #15
Mine hasn't been on the car long enough to settle down. How many miles are on yours? If there aren't many then just drive it and see if it settles down. It could take 200 to 250 miles for it to do so. Also where did you buy it?
01-25-2010, 09:06 PM #16
- Join Date
- January 2010
What is the dragon who sells it? I'm intrested
01-26-2010, 01:29 PM #17
01-26-2010, 06:37 PM #18
01-30-2010, 01:08 AM #19
i know what i`m going to have to by for my car
born on 6-26-03/ 4634 of 5082 of verts & 955th of 2003 SVT 10th ANNIV
"Stupid is a thorough teacher..."
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02-25-2010, 03:03 PM #20
what pulley combo was on the car at time of testing?
02-25-2010, 04:12 PM #21
03-02-2010, 05:59 PM #22
03-02-2010, 06:00 PM #23
03-03-2010, 07:46 AM #24
03-03-2010, 08:05 AM #25'91 Black/Black Notch with '03 Terminator swap. Home Ported Eaton, E85 powered, 2.93/6lb lower, POSI Welded/Ported Dragon set up, Tuned by Pete @ Performance Dyno, Spec 3+, MGW, 3:27's, Bassani catted-X, Mac 3", Leathel Division-X Return system, MM 6-point cage....