| From | Message |
4.7on-nitrous
Dodge Dakota
JOIN HERE
9/20/2002
18:58:34
|
 Subject: info on 4.7 throttle body porting?
IP: Logged
Message:
i have a 4.7 2000 dak on 75 horse shot of nitrous.would i benefit from a home port job?i'm sure not as much as an head port job,but where is there some info on doing a dremel job on it?i saw a 5.2 throttle body port in a post,but not for a 4.7. have access to a mach. shop at work.
thanks
|
4.7on-nitrous
Dodge Dakota
JOIN HERE
9/21/2002
05:01:12
|  RE: info on 4.7 throttle body porting?
IP: Logged
Message:
oh,forgot to mention i really did not want to buy
one all ready from flowmetrics or something,if i could do the same myself.
|
sandman
Dodge Dakota
JOIN HERE
9/21/2002
09:43:38
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
I am going to piggyback your question with another question on topic. If the 4.7 liter engine has a TB that out flows the 5.9 and the 5.9 makes more HP and Tq. then 4.7 why enlarge the 4.7 TB at all?? It seems to me to be a money maker more then anything?
|
CW
GenIII
9/21/2002
10:30:55
|  RE: info on 4.7 throttle body porting?
IP: Logged
Message:
I would have to agree if I hadn't heard from a couple of reliable sources about the larger TB. One thine you have to do to get the 4.7 to run is a free flowing exahust and I don't mean a cat back I mean high flow cat. If you port the step off of the TB above the blade then it will sharpen throttle response greatly and make it a true 65mm TB.
2001 4.7 5sp 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" Z-tube, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams, Robert shaw 180 therm, HO intake manifold.
|
handi2
GenIII
9/21/2002
10:46:06
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
Curtis,
I have one of the 02 4.7's with only one cat. Will replacing it with a high flow affect my torque.
http://photos.yahoo.com/handi254310
2002 Quad Cab SLT Plus 4.7 Every Available Option
Access Tonnoue Cover/Bedrug/360 Air Intakez/
180 Robertshaw/Roadmaster Active Suspension
Street Scene Grill Inserts/HO Cams
|
D
GenIII
9/21/2002
13:00:46
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
take the TB off, dremel the lip out of the inside.
dont remove any material from around the
throttle blade. polish it with a polishing wheel.
I used 2 sanding wheels, and one polishing
wheel to get the job done, approx 1 hour from
removing the TB to reinstalling. the TB is just
attached with 3 bolts, remove the stock airhat,
and unbolt the TB. Good luck. I have pics of
my finished TB on my site.
http://photos.yahoo.com/bc/p0intless/lst?.dir=/
01 4.7 CC auto 3.92 LS
Dynomax 3" catback, dumped
HO cams, HO intake manifold
ported-polished 68mm TB
180 stat, no clutch fan
airaid intake, DJMdrop 3-6
|
CW
GenIII
9/21/2002
18:14:11
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
On my truck at first yes but after about 300 miles it is all back and then some.
2001 4.7 5sp 3.92 LSD
Ported 68mm TB, IAT adjuster, 3" flowmaster cat back, TPS @ .76V, 4" Z-tube, Roadmaster active suspention, Removed Third cat, Electric fan Convertion, HO cams, Robert shaw 180 therm, HO intake manifold.
|
Rob W.
Dodge Dakota
JOIN HERE
9/21/2002
18:36:41
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
hey D what type of compound did you use for policsihng it i have a 5.2 with the tbi on it and i would like to polish it but dont know what to do
|
4.7on-nitrous
Dodge Dakota
JOIN HERE
9/21/2002
23:46:30
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
thanks for the input.i have a 3"exhaust into a ravin with dual 2 1/2 " exits,one fact. cat.soon to replace with a high flow cat and custom larger diameter y pipe.my local exhaust guy is awesome.i wanted to do the throttle body to help out my nitrous set up.i'll take the lip off,and polish the blades.think i,ll try to locate a 68mm off a 2001,02 and do the same to it over the winter.
any more info,just pass it on? thanks
|
sandman
Dodge Dakota
JOIN HERE
9/22/2002
11:08:18
| RE: info on 4.7 throttle body porting?
IP: Logged
Message:
Increaseing air flow will not help NO2 system at all. The O2 in NO2 stands for 2 molacues of oxygen for ever molacue of nitrogen. So you are basicly injecting oxygen into you engine when you do this. NO2 is an oxidizer(adds oxygen)and acts as a catalyst to combustion. It is also not worth while to do cold air kit with NO2 as NO2 will cool the hell out of the intake charge as it is sprayed. In the old days it was rather common to have solinoids freeze over. With a NO2 set up the pistons, rings, heads crank and rods are were your money is best spent.
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
