I accidentally deleted the original post so here's another one.
I meant pictures and numbers for the design on the bottom.
Here are some pic's of the blower that I just ported along with a ported accufab plenum. If anyone has any questions just ask in the thread or pm me.
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------------------------Check out the 1/4 mile numbers below this.-------------
Last edited by Posi Performance; 01-09-2008 at 10:47 AM..
Vehicle: 2004 Cobra Vert with Auto
HP: 648
TQ: 650
1/4 Mile: 9.99@ 133.70
It helps to have a drill press or even a mill but it can be done with the tools listed. If anyone needs any other pictures just let me know. Also this isn't a contest of whose port is better than whose it's just something for us to go off of. Please add any pictures that anyone might have of their port.
Also thanks goes out to Strats03svt for letting me R&D on his perfectly good blower. Let's just hope the dyno/track treats him good.
I forgot if anyone wants to port their lower then this is what I did. It's just as easy and only takes a little time. The radii that's running along the bottom and up to the ports was made a lot larger. Factory was probably around 3/16 and not it's about a 5/16 plus polished. Then where that leads to I made it to where the air hits and goes both ways. The first picture below is the stock lower and you can compare how the air hopefully moves better after the port. There was a lot of work done around the fuel injector bosses and between the ports.
This is on my car now and hopefully along with doing some work to my Whipple will help it also. I ported the Whipple's plenum only where it bolts onto the back of the Rotor Case and I'm going to remove the humps where the intercooler bolts onto it also. I've allways said if I think there's a chance it might hurt power then I won't do it. With the things I'm doing on the Whipple I don't think there is even a remote chance it will hurt anything.
Last edited by Posi Performance; 12-21-2007 at 08:31 AM..
on the plenum did you weld the iac is or did you just port the internal part also how did you do the TB cuz im bored and interessted in trying this
I just ground the bumps off for the IAC with the carbide cutter. Then the bolts just need to be shortened. Then the throttle body was just ground away the the carbide cutter also and smoothened out with the flapper. They make some pretty small diameters so you can get into the corners. Also use the wire wheel like you were saying it's just I didn't know about it and have yet to try it. Between all the home porters I bet we can get a great port design.
Note to everyone! DO NOT USE GRINDING STONES TO DO THIS! THEY WILL LOAD UP AND YOU WILL TAKE A CHANCE OF IT EXPLODING IN YOUR FACE WHILE GRINDING. I don't think that's something anyone wants to chance. Only cut using a "cutter" and not a stone.
im wondering if i do this will it require a retune? also did you notice any better throttle response?
If your car is already tuned for a ported blower then for just the TB/plenum port I don't see why you'd need a retune. And yes in the past I've noticed better throttle response when I ported Throttle Bodies. That even goes with my 97 Cobra that I had. This is my second blower but I've done a few more throttle bodies.
True, normally you don't. But occasionally you do. I was one of those exceptions because when I installed my ported blowe I went about a half a point lean. It's always a smart idea to check your A/F after any motor mod just to be safe.
This is interesting I think I could handle it. I have all the equipment. I think the hardest part for me would be removing the blower haha.I'll keep this thread in mind for after I get the car paid off and i have some Dyno tune and mod money. I love the sound of a ported blower sounds mean
Believe me removing and then putting the blower back on is the hardest thing to do here! The blower is back to his owner and hopefully on the car this weekend. Stay tuned for comments and dyno session. It's pretty much out of my hands now but Strats03svt will post everything in the best/honest way possible. Now we just need some numbers.
Im working on my plenum now. I have already removed the iac bosses and the one small indent in it. I think because of the size of the plenum it will probably be the hardest part to do. It's hard to get to the middle of it and work on the large indent.
Nice job on the port but do you have a flow bench to verify the work you did is going to increase your horsepower rather then hurt it. You really need some kind of a baseline to work against when porting in my opinion but then again I'm no expert
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2003 Redfire SVT Cobra Mac SS prochamber, Magnaflow Catback, JLT Rai, Billetflow IRS Brace, MGW shifter, MMFLSC, BF 2.76 pulley & 4piece idler kit, 26 Spline Liberty Input Shaft, Spec 3+ Clutch, Spec Aluminum Flywheel, Afco HE, Fulltilt Complete Bushing Kit for IRS, Fulltilt HD rear toe links, HR Race Springs, NGK TR6IX plugs, Nitto DR's 315/35/R17, Tuned by JDM
True, normally you don't. But occasionally you do. I was one of those exceptions because when I installed my ported blowe I went about a half a point lean. It's always a smart idea to check your A/F after any motor mod just to be safe.
Mine also went lean after the port.
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! DO NOT USE GRINDING STONES TO DO THIS! THEY WILL LOAD UP AND YOU WILL TAKE A CHANCE OF IT EXPLODING IN YOUR FACE WHILE GRINDING. I don't think that's something anyone wants to chance. Only cut using a "cutter" and not a stone.
Mac SS prochamber, Magnaflow Catback, JLT Rai, Billetflow IRS Brace, MGW shifter, MMFLSC, BF 2.76 pulley & 4piece idler kit, 26 Spline Liberty Input Shaft, Spec 3+ Clutch, Spec Aluminum Flywheel, Afco HE, Fulltilt Complete Bushing Kit for IRS, Fulltilt HD rear toe links, HR Race Springs, NGK TR6IX plugs, Nitto DR's 315/35/R17, Tuned by JDM
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