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02:33:07 - 12/29/2024
Dakota Performance
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CW
GenIII
 
9/21/2002
23:17:28
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 Subject: Ideas, suggestions...
IP: Logged
Message:
I got bored and cut the end off the old intake manifold to my 4.7. I wanted suggestions as to how to mod it. I was thinking about shortening the runners and maybe filling in the plenum some.
I do have a pic of the inside of the intake after I cut the end off. You can see in the pic where the runner starts. The runner ends on the outside at the same point. That is a 360° turn. Even worse than the 5.2 and 5.9 that benifits from the M-1.
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.
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Clevite 77
GenIII
9/21/2002
23:46:29
|  RE: Ideas, suggestions...
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Message:
Your pic dosen't want to work, so I hunted it down, and made a link to the site
CW's Intake Pic
"If my calculations are correct, when this baby hits 88 miles per hour, you're gonna see some serious shit."
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POWER HUNGRY
Dodge Dakota
JOIN HERE
9/22/2002
02:42:23
|  RE: Ideas, suggestions...
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Message:
Is it made of plastic, if so you could epoxy a piece of plexiglass down the middle vertically and turn it into a dual plane manifold. Who know maybe with the long runners it will boost the torque like a edelbrock performer Rpm?
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xplikt
GenIII
9/22/2002
02:59:51
| RE: Ideas, suggestions...
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Message:
Port match?
2002 2WD RC SLT 4.7L 5spd 3.92 LSD
MBRP Single in/out, straight piped 3rd cat, turndown tip
Hotchkis swaybars and springs
Bilstein custom tuned shocks
Roadmaster Active Suspension
Shaved emblems and antennae
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sandman
Dodge Dakota
JOIN HERE
9/22/2002
11:59:38
| RE: Ideas, suggestions...
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Message:
Well you could make one out of aluminum if Hp is the only goal! You can weld one up and dyno it in the same week. You must have alot of free time on your hands! I thought that those northern girls were susposed to keep their boyfriends warm at night???LOL Have you tried calling KRC? They might have an early prototype you can play with!
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sandman
Dodge Dakota
JOIN HERE
9/22/2002
12:00:06
| RE: Ideas, suggestions...
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Message:
Well you could make one out of aluminum if Hp is the only goal! You can weld one up and dyno it in the same week. You must have alot of free time on your hands! I thought that those northern girls were susposed to keep their boyfriends warm at night???LOL Have you tried calling KRC? They might have an early prototype you can play with!
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CW
GenIII
9/22/2002
12:04:02
| RE: Ideas, suggestions...
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Message:
Thanks clevite 77. DTW must have it blocked.
Yes the manifold is good for torque because it is the stock unit. I want something that will let it pull easily in the upper RPM like the M-1.
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.
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CW
GenIII
9/22/2002
15:55:44
| RE: Ideas, suggestions...
IP: Logged
Message:
The whole idea of this was cheap. I had thought of making my own manifold but that would take alot of work and is out of my range of capibilitys as I can't weld anything like aliminum. I did email marty but it will probably take him a long time to get back to me. I am thinking I will reduce the runner length to about 12 inches.
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.
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CW
GenIII
9/22/2002
18:55:23
| RE: Ideas, suggestions...
IP: Logged
Message:
Alright never mind I screwed up on my measurments and ended up with a 10" runner which is way to short. Might still try it for the hell of it.
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.
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Fubar512
Dodge Dakota
JOIN HERE
9/22/2002
19:40:58
| RE: Ideas, suggestions...
IP: Logged
Message:
Please don't take offense, CW. You must have meant that the manifold runner takes "a 90 degree turn", as opposed to a 360 degree one. If it was a 360 degree turn, it would be a loop...that, I'd like to see!
Let us know how it performs with the 10" runners, though.
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CW
GenIII
9/22/2002
21:24:07
| RE: Ideas, suggestions...
IP: Logged
Message:
No unfortunately it is a 360° turn. In the pic you cand see where the runner starts, it ends on the outside of the manifold in the same spot. Sucks and I am trying to improve upon it. I may buy another used manifold off of someone who has done the HO swap if this one is a total flop.
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.
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Fubar512
Dodge Dakota
JOIN HERE
9/22/2002
21:30:33
| RE: Ideas, suggestions...
IP: Logged
Message:
My bad, CW. I thought it was a shot taken down a runner, not through the inside, or, "valley", of the manifold.
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CW
GenIII
9/22/2002
22:39:21
| RE: Ideas, suggestions...
IP: Logged
Message:
Yeah that is the plenum area from the rear side of the manifold. I cut the end cap off so I could get in there and see what was what in there.
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.
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2THEXTRM
GenIII
9/22/2002
23:21:59
| RE: Ideas, suggestions...
IP: Logged
Message:
Your not happy with the HO intake CW? Hows the HO cam/intake package doin for ya? I should have mine this week and may install this weekend if I can.
Flowmaster cat back, Air Raid w/homemade TB connect, Poweraid TB Spacer, Splitfire Plugs
3 inch body and 1.5 Block Lift, 305 70-16 X-Terrains on AR Terons
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dweishaar
GenIII
9/23/2002
01:59:55
|  RE: Ideas, suggestions...
IP: Logged
Message:
Hey 2THEXTRM,
did you notice any difference with the TB spacer? I've heard that they're all junk and a waste of money.
One Eyed Fox
The Baja Dak
Have you jumped a dak..........lately?
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2THEXTRM
GenIII
9/23/2002
07:27:34
| RE: Ideas, suggestions...
IP: Logged
Message:
I "felt" that it gave me quicker throttle response, it made the air intake and exhaust a bit louder and did not reduce the performance at all.
Got mine off one of our members for $50, so I am happy with it. As for paying $100 for a new one, money could be better spent towards something else like a new TB unless you can find some dyno results from the addition of a TB spacer to know if actually changes the torque characteristics positively. Everyone has a theory on why it shouldn't make a difference or work as advertised on the 3.9, 5.2 and 5.9 due to intake design. If I remember correctly, Bernd did dyno his 3.9 Dak after adding a TB spacer and it showed no change. The 4.7 intake is different and it "may" work according to threads I have read, still no hard numbers have I seen. Maybe someone will read this and provide real results. Good-luck!
Flowmaster cat back, Air Raid w/homemade TB connect, Poweraid TB Spacer, Splitfire Plugs
3 inch body and 1.5 Block Lift, 305 70-16 X-Terrains on AR Terons
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CW
GenIII
9/23/2002
09:18:19
| RE: Ideas, suggestions...
IP: Logged
Message:
I am happy with the HO intake just looking for more thats all. Just a cheap experiment. The 4.7 intake has more of a turn in it than the 5.2/5.9. I can't see that being good for flow.
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.
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sandman
Dodge Dakota
JOIN HERE
9/23/2002
09:43:54
| RE: Ideas, suggestions...
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Message:
This seems to be a packageing trend in OEM intake manifolds. My Mom's Toyota Tundra is the same basic design as ours. Her intake looks like the air makes a 360 then travels down a varticle 5 inch straight into the heads. I can only guess that it is a packageing issue. Her intake is alot bigger then ours and it is aluminum instead of glass filled nylon. It will be interesting to see what Marty comes up with. My 4 Cylinder runners are only about 10" long and shaped like the letter J with a plenum box at the top.
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Canucker
Dodge Dakota
JOIN HERE
9/23/2002
10:58:49
| RE: Ideas, suggestions...
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Message:
CW ... well you know mine will be up for grabs soon, but I think I might disect it too and see what I can come up with ...
here's a thought, instead of shortening the runners, why not dremel a hole in them closer to where they exit? and effectively bypass the big long runner. Do you follow me? it would effectively give you a shorter runner, but keep the larger plenum and save you from having to try and cut and paste the whole thing togetehr ... I think that's what I'm going to try.
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CW
GenIII
9/23/2002
14:27:55
| RE: Ideas, suggestions...
IP: Logged
Message:
That is exactly what I did. I took a 1 3/4" hole saw and drilled from the out side All the way throught to the inside shortening up the runner. I got some plasic weld to seal up the holes in the out side. Walla shorter runners in about 10 mins. Now I will clean up the manifold with a dremel and seal it back up. I was hoping to do it this weekend but I am going to be working on my winter beater. I should take some pics I guess.
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.
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Canucker
Dodge Dakota
JOIN HERE
9/23/2002
14:39:45
| RE: Ideas, suggestions...
IP: Logged
Message:
cool .. always one step ahead of the game eh? let us know how it goes when you re-install it
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CW
GenIII
9/23/2002
21:23:18
| RE: Ideas, suggestions...
IP: Logged
Message:
Talked to Marty at KRC performance and he said "Peak torque for the factory 1.87 valve is 3200 rpm, which is 17.69 tuned intake". I ended up with about 15" total including the head. I wanted to be a little shorter to push the upper RPM better. It is a go for the modified intake.
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.
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