Anyone running a real ported TB? Not polished. Any issues getting it to idle afterwards?

TIA,
k2

You haven't done it yet? ;)

I just "cleaned" mine up a bit.

- Alex

I've been very lazy. My buddy has been trying to get me to bring mine down so he can port it. t's my only ride though...I'll prolly do it in January. I 'll have the car down for a few days (FMIC,turbo, header etc.) so I'll do it then.

How much of a difference will be seen by porting the TB and how is it done?

Will an uppipe and Vishnu or Samco hoses make the difference bigger?

It'll be good for 12hp +/- 2hp, at all parts of the power band. And it'll reduce spool up.

k2

Thanks.

Is there any problem with early spooling on a cold engine? I'm more concerned with warm-up time during winter months in New England rather than redlining it at the end of the driveway.

Never boost on a cold engine. Simple as that. You will destroy your motor prematurely.

k2

Can someone post pics of what to dring and where?

So this is one of those "free" mods you can do? I am also interested. How much is a new TB if I hack my stock one. Plus instructions for porting.

/\rcanum

I look at it this way, every little helps. Plus, this is free and easy to do. How much HP? No one knows. But it should add some benifit and once again, it is FREE. ;)

- Alex

i am going to be dynoing my car with and without a ported and polished throttle body. unfortunately this will not take place until febuary. i will keep everyone posted on it.

Instructions for this are on scoobymods.com right? Any possible harm to the car because of this? Or perhaps any disadvantages?

I searched scoobymods.com, they don't seem to have any write-ups on this topic. Anyone?


Ray

Ray,

get a die-grinder and port it yourself! hehe j/k

Cal

quantum racing offers a ported and polsihed TB for those who dont want to do it themselves.

Originally posted by stealth-wrx
quantum racing offers a ported and polsihed TB for those who dont want to do it themselves.

only bad thing about this is you have to send them your TB. i've asked them if i could pay a core charge, have the tb sent to me, then send them my tb and get refunded but they wouldnt respond...

Quantum racing TB is kind of expensive...$425...

If you are going to do it yourself, just be careful and patient.

Originally posted by nqwan
only bad thing about this is you have to send them your TB. i've asked them if i could pay a core charge, have the tb sent to me, then send them my tb and get refunded but they wouldnt respond...

hrm...just checked their site. i guess they updated the way they handle the swap...

The quantum tb is not truely ported. It's blended from the edge to the plate. Smoothed. I mean a straight porting of the TB. The stock ID (internal diameter) is 60.5mm on the outer edge, and 60 mm on the manifold inlet side. I mean porting that out to say, 65 or 66mm. Straight across. Let me ask you guys a question, if I could sell these, for say $200 with core and say a 1 week turn around, who would be down? I mean right now. Tell me, we can make this happen. 5 max to start out.

k2

Does that come with a larger plate? D-Speed, 200 is alot more reasonable than 4something, fabbing a new plate would be the hard part but not that hard, machining round things is always hard for me :p

.

Originally posted by DeliciouSpeed
The quantum tb is not truely ported. It's blended from the edge to the plate. Smoothed. I mean a straight porting of the TB. The stock ID (internal diameter) is 60.5mm on the outer edge, and 60 mm on the manifold inlet side. I mean porting that out to say, 65 or 66mm. Straight across. Let me ask you guys a question, if I could sell these, for say $200 with core and say a 1 week turn around, who would be down? I mean right now. Tell me, we can make this happen. 5 max to start out.

k2

i'm up for it, depending on the quality of the final product :)

I'm thinking of just putting my car down for a few days to have mine done. Then I can take before and after picks. I just may do that. I'll have to look into other arrangements though, my wrx is my only car.

k2

Please do Delicious. I would be very interested to see this happening, for the WRX community as a whole.

FYI, the Quantum Racing TB polishing service is $175, you get $250 back with your core.

Tim

that would be cool if a company made a throttle body for our cars. i know accufab custom made one for someone. just forget who it was though.

Do you think there'd be any issues with part throttle? What else is needed to make the whole intake tract bigger so this is a benefit? thanx

The intake manifold would need to be port matched. No biggie, just use a die grinder.

Ok, here's the deal. Next Saturday. We will pull, and port my TB. We will discuss pricing after he has a better idea of how much work each will be. I will be taking before and after pics. Manifold porting pics and so on.

k2

I'm glad someone finally had the initiative here to do this. Delicouspeed, if you can beat QR's prices I will definitely be up for buying one from you.

Ray

Yea, I can't wait to see the pics.

Please include removing and reinstalling pics as well.

Update. The TB has been ported-65.5mm taper to 64mm straight back. Went well. It is a little more labor intensive than your typical honda TB, about 4hrs labor. I have the ported unit installed on my car right now. The manifold isn't matched yet, but the car is definetly more responsive and making more hp. The idle is perfect. I will be doing some baseline runs this week(Stock TB), and dynoing the ported TB and manifold next week for comparison. We will have pics up soon. Comparison pics will be posted at the end of this week(When I have a stocker in hand). Sorry I forgot my cam, the only pics we have now are of the ported unit.

Because of the amount of labor required. Ported TBs will be $250. Tapered TBs will be $125. Maniford port matching $50.

Ken

Ported Pics...

http://briefcase.yahoo.com/bc/deliciouspeed/lst?.dir=/Ported_TB&.src=bc&.view=

that looks nice

I'm glad someone thinks so.

http://www.temporalrifts.com/wrx/diymods.htm#18

Yes that is blending or tapering the TB, from the edge to the plate. We are porting the TB, the whole unit is enlarged. Not just before throttle plate. Though we offer that service as well. Quantum ( http://www.quantum-racing.com/Products.htm ) offers this as well, $175. We will port for $250, and taper for $125. Did you look at the pictures? What did you think?


ken

Stock

Ported

Ported TB rear shot

Any ideas of the cost?

Tapered $125
Ported for $250
Manifold porting $50

Ken

There is no way a ported Tb alone is good for 12 hp, or 10 or even 3 hp on this car.

This is forced induction, not NA...the motor is not sucking in air, air is being rammed into it. Granted, a smooth tract into the combustion chamber is beneficial, but unless the whole inlet tract is the same diameter, there will be no gains, only perceived ones. To do this properly, you would need a ported turbo, IC hose, TB and intake manifold, not to mention cleaning up the heads a bit as well....after all the effort is it worth it? MAYBE if everything is apart already and being reassembled, but by itself, not a chance.

Not trying to rain on anyone's parade, just trying to give it to people straight without the sales hype. This is a VERY VERY VERY worthwhile mod if you do it the right way....make everything the same diameter, from the turbo onwards. But unless you are skilled enough or have enough free time on your hands to do it, its not worth it.

My $0.02

Adam
Z-1 Performance
www.z1auto.com

We will see when the dyno figures get posted won't we. Why even do headwork if being FI negates improving flow in air passages.

Ken

The dyno results are all fine and well, and again, I am not dismissing this as a mod for someone...but to say that this part alone is a 12 hp gain, +/- 2 is just unrealistic at best as far as I see it. This is a worthwhile mod to do if you do it as part of a system (at least fromt he intercooler pipes onwards to the head).

As for headwork and FI, not sure what you are referring to? one has nothing to do with another.

As for dyno plots...well, I am a perpetually cynical about that stuff (as I have seen way too many examples of pure BS) and simply do not believe from anyone anymore...let alone from someone trying to sell something...that is NOT a crack on you at all, Ken. I respect the fact that you are trying to help out the community, and I am all for testing and trying new things to improve the heard.

The heads, the manifold, the turbo, the intake...all a part of a system. A system full of compromises. When making gains, what are we doing? Minimizing compromises and improving efficiency. I'll pass on the debate in favor of proof. I remember when the WRX came out, I got yelled at by a lot of people for suggesting the stock intake system was crap. And could be vastly improved upon. Some people think stock is best, I can't help them. Improvements are made with experimentation, trying the untried. But this isn't really a new thing is it. FI cars do upgrade TB sizing. Check it out.

Ken

this is also pointless

You won't get any pressure drop figures from us, but I should be able to show you a nice reduction in lag once I get the dyno figures. Before and after.

Ken

Many of the pics are too large to post. Here is a link to the photos:

http://briefcase.yahoo.com/bc/deliciouspeed/lst?.dir=/Ported_TB&.view=l

Many new pics added.

Ken

Tapered

looking good sir.

cant wait for dyno results.

GDA

I think that a TB on our cars COULD be of a great benefit. Especially to those of us with larger turbo's since there is only so much air (CFM) that a stock TB can pass. So, given that the turbo is pushing more CFMs, all that air gets backed up and our power curve "hits" the wall.

I am looking into a nice 80mm domestic TB I might be able to use. Since I don't have any stock ECU related stuff, using such TB with TEC III will be very simple, given I can just "attach" it to the manifold.

- Alex

Try it out and let us know how it works.

I installed my wifes tapered tb yesterday night. I drove her car this morning, just incase anything went wrong. Her mods:
MRT TMIC
DSBC
Blitz panel filter

I had to retune boost, it was over boosting by 3500rpm. The car feels much nicer. I think it was the bling bling polished option, lol.

Ken

ken, any word on being able to get some cores for an exchange? i'm still interested in this :D

walt

Unfortunatly we still havent been able to hammer down any cores. No recyclers have wanted to sell any. And the best new price I've gotten so far is $536.33. The hunt continues.

Ken

TB cores are a pain. Subaru won't sell anything but the entire assmebly. What you get is way more than you need.

Ken,
You have a PM...


areg

You Pm box is full. E-mail disabled. Sounds like a good Idea. Email me.

Ken

im very interested.

can you just sell me a new TB ported?

*bump*

Sounds interesting


Bill

up

This project has unfortunatly stalled due to my having an accident. I appologize for the delay. Please stand by.

Ken

Sorry to hear about you having a wreck. Was everyone ok?