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Old Jan 30, 2024 | 07:15 PM
  #1  
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New intake plenums

I have a boost leak on my 2000 super duty. The Plenum has started to crush on the passenger side. I am looking at new Plenum now I was originally going to buy them from swag Diesel but I have found some on Amazon for like half the price. I didn’t know if anybody had any experience with them. They look about the same as the ones swag is selling

 
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Old Jan 30, 2024 | 07:27 PM
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I believe Adam ( @z31freakify ) has some experience with plenums similar to that.
 
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Old Jan 30, 2024 | 09:42 PM
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I have them on my 00, no problems to report they are sturdy. As for how they flow and all that scientific mombo jambo
 
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Old Jan 30, 2024 | 10:39 PM
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Originally Posted by z31freakify
I have them on my 00, no problems to report they are sturdy. As for how they flow and all that scientific mombo jambo
that’s all I’m worried about is if they are sturdy… my 2000 is basically all stock and will probably remain that way if I ever did change injectors I wouldn’t go bigger than 160/30
 
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Old Jan 31, 2024 | 06:12 AM
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I run them with no problems as well.
 
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Old Jan 31, 2024 | 07:09 AM
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Definitely going to go with them and save the money then
 
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Old Jan 31, 2024 | 08:55 AM
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Riff Raffs are the best. Buy once, cry once. Best on the market
 
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Old Jan 31, 2024 | 09:08 AM
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Originally Posted by cjfarm11
Riff Raffs are the best. Buy once, cry once. Best on the market
also 6x more expensive…. If these work fine it’s all good by me… only thing I like about riff raff is they use an oring. I have another question has anyone used the gaskets for these they sell instead of rtv seems like the gaskets would be easier to install
 
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Old Jan 31, 2024 | 09:52 AM
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Originally Posted by Jamon Norton
also 6x more expensive…. If these work fine it’s all good by me… only thing I like about riff raff is they use an oring. I have another question has anyone used the gaskets for these they sell instead of rtv seems like the gaskets would be easier to install
The question is flow, and there is a reason that Riffraff Diesel and Beans spend so much time on the design and they aren't just a flat plate. I can't find it right now but somewhere on this forum there is or was a thread about the terrible flow of the flat style plenums when compared even to stock not to mention an optimized billet option. I would sooner leave my stock ones on than go with something that flowed less and cause more turbulence since the whole point is to get more air into the engine more smoothly. Also price is indicative typically of quality and of course a flat piece of aluminum with a tube welded to it and made overseas would be very cheap.

Beans Diesel 7.3L Plenums

Riffraff Diesel 7.3 Billet Intake Plenum Kit
 
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Old Jan 31, 2024 | 10:23 AM
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Originally Posted by duck fan
The question is flow, and there is a reason that Riffraff Diesel and Beans spend so much time on the design and they aren't just a flat plate. I can't find it right now but somewhere on this forum there is or was a thread about the terrible flow of the flat style plenums when compared even to stock not to mention an optimized billet option. I would sooner leave my stock ones on than go with something that flowed less and cause more turbulence since the whole point is to get more air into the engine more smoothly. Also price is indicative typically of quality and of course a flat piece of aluminum with a tube welded to it and made overseas would be very cheap.

Beans Diesel 7.3L Plenums

Riffraff Diesel 7.3 Billet Intake Plenum Kit
well like I said before the only reason for changing the stock, Plenum is the passenger side one has started to crush, and I don’t ever plan on going bigger injectors than 160/30 and I doubt if All even do that. I have another truck that I jumped all the way down the rabbit hole with, and have broke countless parts after adding a bunch of horsepower, that kind of cured me of my PMS. I’m debating on even adding a tuner on this truck and if I did, I would load about a 50 horse towing tune, a similar horsepower daily, driving tune and high idol, and that would be it not to destroy my transmission, rear end, and all kinds of other stuff. No doubt the billet Plenum from Rifraff or beans are better than the one I am looking at, but I don’t know that it’s necessary on a stock truck.
 
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Old Jan 31, 2024 | 11:32 AM
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In that particular case, then your best option would be to go with the Riffraff Diesel Plenum reinforcing inserts. This would allow you to straighten out and strengthen your stock plenum mouth, and also save you money.

Riffraff Diesel Plenum inserts
 
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Old Jan 31, 2024 | 01:12 PM
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What...^^^...duck fan said...in addition to replacing those useless worm clamps with some decent spring loaded clamps like the rest of them on the cac boots...
 
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Old Jan 31, 2024 | 01:14 PM
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Originally Posted by bwguardian
What...^^^...duck fan said...in addition to replacing those useless worm clamps with some decent spring loaded clamps like the rest of them on the cac boots...
I have cnc fab boots on it
 
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Old Jan 31, 2024 | 01:19 PM
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Originally Posted by Jamon Norton
I have cnc fab boots on it
Good...what about plenum inserts...
 
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Old Jan 31, 2024 | 02:02 PM
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Originally Posted by bwguardian
Good...what about plenum inserts...
nope…. And I’m thinking the mechanic over tightened them…. When I turn the clamp it just never gets tight and it’s not stripped which leads me to believe it is crushing it… also low boost
 
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