PowerPipe Exhaust for slant/6

Slant 6 Engines

  1. Mister Twister

    Mister Twister Well-Known Member

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    Just looking for some feed back on the new style I will run on the TwIsTeR. [​IMG]
    Alot of views no response mother must of had that talk with yall?No problem with the install nuts can be put on by hand. [​IMG]

    Small stager for pipe entrance. [​IMG]
     
  2. daveoneshot

    daveoneshot Member

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    ....Wicked nice, Twister........I'll be the first to compliment you. Did you
    build those pipes ?? What else can you tell about them ??

    .........Beautiful....................................................Dave.
     
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    • JR

      JR Pissed off senior member.

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      How about a pic of them off the car and a pic of the clearance between the rear header and the starter, price?
       
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      • Mister Twister

        Mister Twister Well-Known Member

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        Thank you yes we did make them :cheers: Both front and rear are same dimentions tube length and bends. IE the same flow. The length can be added or subtracted depending what you want real easy. Don
         
      • Mister Twister

        Mister Twister Well-Known Member

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        No problem here is a pic of stock starter tight but it works. A header wrap and starter blanket would help im sure. I use a mini starter it should be alot better.
        [​IMG][​IMG]
         
      • grumpuscreature

        grumpuscreature Resident Curmudgeon

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        What is the size of the primary pipes and the collectors? You may just have what I've been looking for. Nice job.
         
      • memike

        memike Super Moderator Staff Member FABO Gold Member

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        They sure look good =P~ can you tell us what thickness the power pipes are and how much to my door 72401 :happy10:
         
      • Mister Twister

        Mister Twister Well-Known Member

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        Hello grumpuscreature thank you. The collector size is standard 3"
        the primary size on that set is 1 1/2" When we installed them inside the flanges noticed we had some more room. the local supplier did not have 1 5/8" we did get some 1 3/4" for fitment dont know how large we can go with that design yet. :toothy10: Don
         
      • slantsixness

        slantsixness Active Member

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        Your small pipes dump into a pipe that is extremely too big...You made no attempt to streamline these pipes to the larger pipe creating a lot of turbulence...I think you will find you have killed the low end power of a slant six but only track times will tell you....
         
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        • Grinder

          Grinder Banned

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          Agreed. Those pipes look like crap from a flow standpoint. It seems like you have some talent with welding,why not try and make something like a short tube header,instead of this power pipe crap? The stock manifold will almost certainly have better flow charicteristics based on design alone.
           
        • slantsixdan

          slantsixdan =..=

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          Oh, we're doing another round of PowerPipe dreams, eh? Interesting. I wonder if there'll be any facts and data this time. Disappointingly, all there's been in the past has been claims and handwaving...and ugly tantrums by Cathi (Mister Twister's wife); see here, here, here, here, and here.
           
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          • JR

            JR Pissed off senior member.

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            I was thinking the same thing but at least his design is getting better every time he makes a new one. I figure maybe 3 more trys and he will have it!
             
          • ChazRam

            ChazRam 70 B5 Dart Swinger

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            First off I know the past with the Log was not all too good. Having said that another attempt is being made to put something out there. So, I am saying give the guy a chance. This could be tweaked into something decent with some positive input and communication. Myself I kind of liked the original 'LOG' as it just looked different but it did not take off and I have not seen or heard anything more about it.
            On this item I absolutely agree with the size of the collector pipe being too big but is it? My thinking is along the lines of Grinder. This collector is the right width. Its just WAY too long. And yes, the turbulence will be pretty bad by the way it is put together. I would like to see the primary pipes bent like that collector pipe and have nice smooth bends and these going into a short like 4 inch collector streamlined. In the end I know we are just talking shorty headers here but if not this drastic to take from the design how about a more streamlined attempt at what is shown. I am talking about short primary pipes leading into that long collector but done like primary pipes go into collectors. It could work? Just a thought.
            Chas.
             
          • MadScientistMat

            MadScientistMat Well-Known Member

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            It looks like it could work better than a stock manifold, but still, it would be worth dyno testing to see how much improvement, and if it gives up anything compared to a true set of collectors.

            Also, have you thought about a heavy gauge turbo version? Log designs are pretty common and reasonably effective in the turbo world, where a short tube length can often trump scavenging effects.
             
          • grumpuscreature

            grumpuscreature Resident Curmudgeon

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            The loss of torque on a slant can't be any worse than a stock manifold. The thing has a 4 1/8" stroke for God's sake.:toothy10:
             
          • Mister Twister

            Mister Twister Well-Known Member

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            I just finished this set 2 days ago so we have not tested them yet. We will take pics and video during the changing from the set we run now,:toothy10: and the set we just built. It still will not be enough for everyone. See you @ the track Don8)
             
          • slantsixness

            slantsixness Active Member

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            I bet this set-up is worse than a stock exhaust manifold. It would probably be about as bad as putting zoomies on it....the only way to find out is to send him some money and put it on your car. Be sure and get a baseline with the stock manifold and gives us a report.
             
          • Mister Twister

            Mister Twister Well-Known Member

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            This is a differant PowerPipe and atitude have a good night Dan :snakeman:
             
          • Mister Twister

            Mister Twister Well-Known Member

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            Ok it took me three days from start to finish on this set. With your calculations I should have something going on in 9 days thanks Don
             
          • JR

            JR Pissed off senior member.

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            Are you making your own flanges? Why don't you just base the next set off a set of Clifford shorty headers but add a pocket on top of one of the tubes that will accept the stock one or two bbl choke coil then sell them for half the price of what Clifford sells them for? It is a proven design that works and I know a ton of guys would buy them because the lack of any choke is what is keeping alot of guys from running them on their street cars. Hell I would probably buy 2 sets from you myself!

            I would add a choke pocket to the top of one of the tubes on the set of cliffords I have in the 48 chevy but they are ceramic coated and I am running a Holley 4bbl.

            You should be able to make a set in no time at all!
             
          • ChazRam

            ChazRam 70 B5 Dart Swinger

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            Don, not to start a battle royale with you but this site is no different that the other slant site. This is my idea. Put your mouth where the money could be. Post the following.
            (using data and other products)
            60 Foot times,
            1/4ET,
            1/4 Speed,
            Photograph and post et slips to prove all of this.
            Lastly BOTTOM LINE PRICE on your product.!!!!!!!!!!
            If you really want to sell it there are a bunch of people here who would want something like this for their slants. I read a bunch of the other posts on the log and lack of proof and price was a big sore spot. This is what is being asked of you by many to do. Just put everything out there for us to chew on. I am afraid if this goes like the other threads went your will be done before you even start. PROOF AND PRICE. PROOF AND PRICE, PROOF AND PRICE, PROOF AND PRICE >PLEASE<> PLEASE<> PLEASE<!!!!!!!! You have been going to the track for a couple of years now and I have yet to see any results. I have buddies in Lakeland, Brooksville, Wildwood, Ocala, Orlando, and Zephyrhills Florida who know nothing about you, the power pipe or log and all I know is it looks promising and I am interested. Just get it all together and get it done and post it!!!!
            Chas.
             
          • Mister Twister

            Mister Twister Well-Known Member

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            First base line report. We could not even get close to flowing the same water volume with a stock manifold as we did with PowerPipe Hmmmmmm
             
          • slantsixness

            slantsixness Active Member

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            I gave well thought out and educated feedback based on my past experience and this is your response??? Maybe you just wanted a pat on the back???

            For a well performing header it needs to take a few things into consideration. It needs primary pipes small enough to keep the power of both the compression and scavenging wave in the pipe. They must be large enough for the optimal flow of exhuast gas past the exhaust valve and down the pipe. They need to be the proper length to keep the scavenging wave arriving at the right time to reflect back to the exhaust valve. The collector needs to be the proper diameter (and length) to provide a correct duration and intensity of the aforementioned scavenging wave. The primary and collector (combined) must produce the scavenging wave that arrives at the exhaust valve during the valve overlap period over the operating RPM range for each engine(ie the slant).

            But I am sure you took all of this into consideration in the 3 days when you welded 3 -1 1/2" pipes into one 3" pipe....right?

            Let us know when you get some time slips on your new PowerPipe design. You should run the same car with a stock manifold, any design you have and a set of cliffords just to see what happens.
             
          • slantsixness

            slantsixness Active Member

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            Could you see the scavenging waves in the water when the exhaust valve opened and closed?
             
          • 805moparkid

            805moparkid Slant and AFX Guy

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            i don't think that it is fair to tell this guy that it sucks... ideas start out crappy and then evolve before they sometimes even become real! i would like to add my .02 by saying that u should look at some step style headers. i think u will see the gradual tube size change. when u go from a high velocity tube 1 1 /2" to a 3" pipe u are getting a huge velocity drop=less hp, but by stepping the reduction or increase u don't hurt velocity as much. one other thing is that u need to consider that this is a 225 CI engine, more if bored. so if u have TWO 3in pipes there is almost no flow, ie no exhausting of the cylinder on the exhaust stroke. so what im getting at is that most slant guys run one 2 1/2" pipe or two 2.25 pipes, so make ur final tube/collector(s) two 2.5" or one 3".

            again i think that it is wrong for anybody to diss an idea, people tell me my ideas are crazy and i tell them to go f**k themselves!

            good luck on your header idea! just need to take factors into consideration.

            ed

            P.S.
            i was told i should build a small block because it was easier
            i was told i couldn't build my own AFX plymouth...

            Me And Altered.jpg

            1022091502.jpg
             
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