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Jacob
Dodge Dakota
JOIN HERE
2/05/2002
11:59:14
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 Subject: Ported TB ?'s
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Message:
I have a 2001 4.7l, and wanted to make one thing certain. What size is the stock TB on this? And what kind of performance can i expect from just porting and polishing the stock TB??? thanks
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CW
GenIII
2/05/2002
14:24:16
|  RE: Ported TB ?'s
IP: Logged
Message:
68mm. No numbers but you will feel it.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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Chrys
Dodge Dakota
JOIN HERE
2/05/2002
20:30:55
|  RE: Ported TB ?'s
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Message:
CW, just curios. I'm thinking of porting my throttle body on my 01 Dak 4.7 Exactly how did you do it. What the process?
Thanx
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CW
GenIII
2/05/2002
20:51:53
| RE: Ported TB ?'s
IP: Logged
Message:
The key to porting the throttle body is to not remove any material from around the throttle blade when it is closed. Remove the lip that is in front of the throttle blade so that it is the size of the throttle blade. It is quite a narrowing compared to the size of the throttle blade. I used a dremel with sanding drums at 60 grit so as not to remove to much material to quickly. I didn't remove the throttle blade or anyting. Just removed the throttle body from the engine.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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Chrys
Dodge Dakota
JOIN HERE
2/05/2002
21:28:50
| RE: Ported TB ?'s
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Message:
Thanx for the info I think that I will probably attempt this mod.
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Chrys
Dodge Dakota
JOIN HERE
2/05/2002
21:54:10
| RE: Ported TB ?'s
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Message:
One last question on the stock throttle body. What is the purpose of the lip that we need to take off and what does it do to performance?
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CW
GenIII
2/05/2002
22:48:33
| RE: Ported TB ?'s
IP: Logged
Message:
No idea on the lip. Bernd might be able to answer that one.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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bernd
*GenIII*
2/05/2002
22:51:18
| RE: Ported TB ?'s
IP: Logged
Message:
It's known as a "Torque Step". It allegedly builds better bottom end TQ but has a nasty effect upon quick acceleration from idle to WOT...it's stumbles a bit. Removing the step not only cleans up the bores but also smooths the airflow (adds to the CFM and performance capability of the TB).
1997 Dodge Dakota SLT - V6
Supercharged/Intercooled @ 10# w/Nitrous
14.55 @ 96.01mph
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scat pack
GenIII
2/06/2002
17:32:36
| RE: Ported TB ?'s
IP: Logged
Message:
Has anyone towing with this lip removed noticed a loss of low end torque ?
2K RC 4.7 4x4
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Dr Q
DakotaEnthusiast
2/06/2002
18:12:49
| RE: Ported TB ?'s
IP: Logged
Message:
Cw I think we mighta started somthin' with this tb port and polish deal. Jeez it all started with Lesley taking an emery cloth to her tb. I think it helped to grind down the screws flush with the shaft and taper the rim at the entrance. I don't think it's hurt the bottom end but it screams from 3000-5000. It's hard to say how much it helped my performance I was pretty much learning to drive when I did it, also I placed a k&N drop in fernco elbow ground the baffles out of the stock air box and cut the front outta it, and placed lakewoods. I real happy with the performance, my brother and his mustang aren't!
Q
Dr.Q
'01 Patriot Blue SLT RC 4.7 5sp 3.92 pegleg
0-60 @ 6.20sec.
1/4mi @ 14.75@97.1
Home Brew Airbox
K&N Drop In
Lakewood Traction Bars
Dremel TB Port and Polish
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CW
GenIII
2/06/2002
20:33:35
| RE: Ported TB ?'s
IP: Logged
Message:
Yeah. I did it on my '97 but I think it made more of a diff on my '01 .I have a note pad in my documents with the info for the TB port I just cut and paste it into here. I will have to add the grinding the throttle shafts and screws. I have done it soooo many times.
We pretty much got our trucks at the same time Q you started modding your truck and then stopped did you run out a money there bud. You have to get rid of that third cat. If you can get away with it.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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BlackDak02
*GenIII*
2/06/2002
21:40:50
| RE: Ported TB ?'s
IP: Logged
Message:
Yeah, CW, I figured you had that reply handy, it looked awful familiar, LOL.
2002 Black CC SLT 4x4
4.7L 45RFE 3.55 LSRD
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Dr Q
DakotaEnthusiast
2/07/2002
00:46:03
| RE: Ported TB ?'s
IP: Logged
Message:
Naw man actually I never had much money to start with I think every thing I did cost less than $100.00. I'm getting divorced so I'm holding back til I find out what the divvy is gonna be. If I keep the truck and get rid of the Ole Lady I will definatly be having some fun on this truck. If I gotta get rid of it I might hold out for a 2003. We'll see I got a lot of things up in the air for now. But I really want to know how those cams work out. What do you think of KRC's head port and polish? Would it be worth the cashish?
Q
Dr.Q
'01 Patriot Blue SLT RC 4.7 5sp 3.92 pegleg
0-60 @ 6.20sec.
1/4mi @ 14.75@97.1
Home Brew Airbox
K&N Drop In
Lakewood Traction Bars
Dremel TB Port and Polish
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CW
GenIII
2/07/2002
08:59:55
| RE: Ported TB ?'s
IP: Logged
Message:
Ahhh sorry to hear about the divorce. On the port and polish I would like to see #s on the intake and exhaust. Might have to email Marty and see if he has those handy.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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Dr Q
DakotaEnthusiast
2/07/2002
16:02:55
| RE: Ported TB ?'s
IP: Logged
Message:
CW I'm thinkin' if you get the cams, heads ported and a flash-you just might be looking at 13's! WITHOUT a blower/n2o! Dude, once I get rid of the excess baggage I'm there with you brother!
Q
Dr.Q
'01 Patriot Blue SLT RC 4.7 5sp 3.92 pegleg
0-60 @ 6.20sec.
1/4mi @ 14.75@97.1
Home Brew Airbox
K&N Drop In
Lakewood Traction Bars
Dremel TB Port and Polish
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CW
GenIII
2/07/2002
20:41:28
| RE: Ported TB ?'s
IP: Logged
Message:
Yeah I am real tempted to see how far I can push this truck N/A. Been thinking about higher compression pistons but I like the turbo idea as well. Corrected 13s maybe but my town is at 3000+ feet and the track is at 3500+ feet. Not good for the ET. I know a guy and his lighning only runs 14.4. on a good day at that track.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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teamfast
Dodge Dakota
JOIN HERE
2/07/2002
22:43:02
| RE: Ported TB ?'s
IP: Logged
Message:
Is there an oxygen sensor near the third cat? Im
bolting on my second sytem and wondering what
kinds of gains this could hold. By the way, with
all your mods cw how has the trucks driveability
been? Cold weather starts, idle, check engine
light been on a few times i suppose. Your really
pushing it. Must be nice to work at a dealer. Any
word on those pesky DRLs?
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CW
GenIII
2/07/2002
23:13:08
| RE: Ported TB ?'s
IP: Logged
Message:
No drivability problems at all. Had all the mods listed and it was almost -40°F a little while ago. Never seen a check engine light on in this truck. I am sure I have gained and not lost torque with this engine. There is no o2 sensors to worry about when it comes to the third cat only the 2 in the Y-pipe.
Did you not get my e-mail response? Why would you want to get rid of them they have saved me a few times frome pulling out in front of someone when it is really hard to see out. Like wqhen the sun is in your eyes. I would leave them be as so other dumbasses will see you coming.
BTW I am just getting started. I am looking seroiusly into porting the heads. It sure feels like it could use more fuel because at this stage in my mods when I turn the IAT adjuster on and adjust it to a cooler setting it feels alot better.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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teamfast
Dodge Dakota
JOIN HERE
2/08/2002
23:36:22
|  RE: Ported TB ?'s
IP: Logged
Message:
are you lowering your truck? Dont you find the
handling sloppy? Just ordered the manual for
this thing so my imagination has some
foundation...Any dynos in your area that you
use? None really around here unless i go to
toronto...
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CW
GenIII
2/09/2002
00:17:52
| RE: Ported TB ?'s
IP: Logged
Message:
No, I am not going to lower my truck. It makes them just about useless, as a truck, then. I pull a 5000lb trailer with 450lbs of tounge weight. Then I load my KTM and riding gear on top of that. I pull over the scales at about 9500lbs GVW with trailer.
But yes I do find the handling a little sloppy but that is alright because I can pull off the road and down some trails to unload my bike. I like it that way. I drive gravel roads at least once a month as well. Not a good thing in a lower truck, not if you like the paint the way it is.
Unfortuantely the nearest dyno is 2hours away and they only dyno during the week. Unfortuantely I am at work then. I may do it for interest on my holidays. Think I will go the way of the G-tech to see how much I am improving my truck.
2001 RC 4.7 5sp 9.25" 3.92 LSD
Ported 68mm throttle body, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" cold air, Roadmaster active suspention, Removed Third cat. Electric fan Convertion, Awaiting HO cams.
Working on adjustable fuel pressure with return.
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01Motorsport
Dodge Dakota
JOIN HERE
9/25/2004
19:55:16
| RE: Ported TB ?'s
IP: Logged
Message:
I'm finally going to yank the 68mm TB off my '01 4.7 for the mod described by CW. Did Graphite Dak or someone else have a play-by-play post? '01 4.7 RC 5-spd 3:92; Flow 70 w/2 1/2"; HO cams; homebrew alloy intake-stock airbox-K&N-6"Fernco; Bosch 4118.
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