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Kegger Intake Mod DIY
Administrator
Joined: Apr 2010
Posts: 87,453
Likes: 4,218
From: Clayton MI
There isn't a search box, but, there is a search link in the bar across the top. 
Aftermarket PCV valves are crap. I STILL had an oil consumption problem after doing my plenum..... traced it to the crappy PCV valve. Went to the dealer, got one from them, and I have zero oil consumption now. (with 165K on the clock) Gotta fix the leaks at the valve covers though.......
Blown Plenum will give you bad gas mileage, oil consumption. Fouled plugs, misfires, and various other things of that nature. If you have a 2nd gen dodge, with gas engine, you will have to fix the plenum at some point......
Aftermarket PCV valves are crap. I STILL had an oil consumption problem after doing my plenum..... traced it to the crappy PCV valve. Went to the dealer, got one from them, and I have zero oil consumption now. (with 165K on the clock) Gotta fix the leaks at the valve covers though.......
Blown Plenum will give you bad gas mileage, oil consumption. Fouled plugs, misfires, and various other things of that nature. If you have a 2nd gen dodge, with gas engine, you will have to fix the plenum at some point......
Grand Champion
Joined: Apr 2008
Posts: 7,055
Likes: 7
From: Lee County, North Carolina
I would try to just tighten those valve cover bolts to 95" lbs. first.
Mine have lost torque at every oil change.
A valve cover leak makes it easy to get the spark plug heat shields off so it isn't a terrible thing to have going on in the engine.
I ditched my heat shields on the last plug change though so I don't have to worry about them seizing any more.
Mine have lost torque at every oil change.
A valve cover leak makes it easy to get the spark plug heat shields off so it isn't a terrible thing to have going on in the engine.
I ditched my heat shields on the last plug change though so I don't have to worry about them seizing any more.
Thread Starter
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Grand Champion
Joined: Nov 2004
Posts: 6,099
Likes: 6
From: Colorado
Unknown. My guess is yes since nothing really changed. I think the reason we see it on the earlier models more is that they just have had more time since they where new to develop the problem. Just keep an eye on the inside of your intake from time to time and see if it changes. I used to look at mine every oil change until I started seeing the signs of oil in the intake.
Unknown. My guess is yes since nothing really changed. I think the reason we see it on the earlier models more is that they just have had more time since they where new to develop the problem. Just keep an eye on the inside of your intake from time to time and see if it changes. I used to look at mine every oil change until I started seeing the signs of oil in the intake.
Veteran
Joined: Feb 2011
Posts: 425
Likes: 2
From: New york
doing what you have done to the intake is OKAY, but the intake is not where the weakest airflow link is.
HINT: its allin the heads!
i think your observations werethe direct result of theplacebo effect. if you had a vacuum leak to begin with, you cant compare the truck before to the truck now. what you did to the intake was enlarge the openings of the runners which creates a lower velocity of the incoming air. while the effect is not as dramatic, what you are doing is essentially starting to convert a dual plane style intake into a single plane type.
had it been my engine, i would have left the intake alone and paid attention to the cylinder heads. the stock intake manifold flows plenty of cfm to supportthe vast majority ofstreet applications
HINT: its allin the heads!
i think your observations werethe direct result of theplacebo effect. if you had a vacuum leak to begin with, you cant compare the truck before to the truck now. what you did to the intake was enlarge the openings of the runners which creates a lower velocity of the incoming air. while the effect is not as dramatic, what you are doing is essentially starting to convert a dual plane style intake into a single plane type.
had it been my engine, i would have left the intake alone and paid attention to the cylinder heads. the stock intake manifold flows plenty of cfm to supportthe vast majority ofstreet applications
---> with the complete understanding that the vacume leak will cause a lean condition. I have changed the base plate gasket on my 1997 5.2 without doing any mods to the intake! im currently moding my spare intake i have a dyno in both 2x4 and 4x4 in 2x4 with 3.55 gears i got about 310 ph and 320 tc in 4x4 i got about 290 hp and 305 tc. Ill let ever one know how it goes after Silvers intake mods.
Grand Champion
Joined: Apr 2008
Posts: 7,055
Likes: 7
From: Lee County, North Carolina
That's what I want to know. Improved heads maybe?
I remember AlabamaRam claimed to get something like 70hp after putting new improved heads in his truck. He said it was tested on a dyno before and after the head swap but that seems like a lot for just new heads.
I remember AlabamaRam claimed to get something like 70hp after putting new improved heads in his truck. He said it was tested on a dyno before and after the head swap but that seems like a lot for just new heads.
Record Breaker
Joined: Feb 2009
Posts: 1,133
Likes: 18
I could see it. Was his first heads missing a valve or something? Too many unknowns. Was the rest of his engine still stock? Was it horsepower regained by doing maintenance such as head gasket fix or some efficiency enhancement over the oem design like compression bump and/or flow volume and velocity net increase?
