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    Thread: ***1.8T Intake Manifold Test Results***

    1. Banned Don R's Avatar
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      02-27-2007 12:01 PM #51
      Quote, originally posted by igotaprestent4u »
      pretty much,
      lets see, the RMR is one of the best flowing manifolds, with the best distribution among cylinders.
      The pricing is spot on, and you have the option of different throttle body options plus the location of the throttle body,
      tell me why it isn't a good buy?

      So are you taking these results as defenitive?

    2. Banned axlekiller's Avatar
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      02-27-2007 12:06 PM #52
      Quote, originally posted by igotaprestent4u »
      pretty much,
      lets see, the RMR is one of the best flowing manifolds, with the best distribution among cylinders.
      The pricing is spot on, and you have the option of different throttle body options plus the location of the throttle body,
      tell me why it isn't a good buy?

      Distribution can be fixed on the Homebrew, and you'd still have the throttle options with possibly less price. 007 is the same price as the RMR and can be built to spec and flows more. Like we've stated, distribution will be better under pressure, unlike vacuum. So why is RMR the winner?

    3. Member badger5's Avatar
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      02-27-2007 12:35 PM #53
      quick question.
      Runners #1 thru #4 are numbered from throttle end to opposite end yea?
      throttle end runner being #1 in the results yea?
      If so.... 007 small and largeport... lower on #4 runner... why is this? Plenum size in this end effecting flow? (and if so, what effect on balancing flow would there be from rotating throttle plate? )
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    4. Banned axlekiller's Avatar
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      02-27-2007 12:54 PM #54
      Yes, #1 is closest to the throttle. Lower numbers on 007's in runner #4 are from the taper of the plenum. Once again, under pressure, runner #4 won't suffer from this.

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      02-27-2007 01:09 PM #55
      Quote, originally posted by axlekiller »
      Are you including the length of your runner and V stack protruding above/off the plenum floor? That's only going to cause turbulent pockets of air, and you don't have the necessary full radius 1-1.5" on the stacks to make a 270* sweep into the runner entry. Would you like to send your intake for flow testing once completed to compare to these others?

      Yes I am including the length of the runner and the rest of the port to the back of the head.The 4" plenum is there because of the ugly turn to the first runner and to have extra volume to maximize the amount of area around the stacks.
      I used the stock intake to decide on where the"sweet spot" is and then I raised the resonant RPM 1000rpm beyond that.

    6. 02-27-2007 01:12 PM #56
      can somebody elaborate on how is the flow in the runners respectively during opening/closing of the admission valves?It is an interrupted flow,isn't it?If so,isn't there plenty of time for the flow to equalize for each runner (in the pressence of an adequate plenum) unlike the test showed?Please educate me!

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      02-27-2007 01:36 PM #57
      can anyone speculate at what power levels the stocker runs out of breath in order for these manis to have a reasonable cost/benefit ratio? has there even been a back to back dyno with just a manifold swap on a BT setup?
      good thread [IMG]http://**********************/smile/emthup.gif[/IMG]

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      02-27-2007 01:47 PM #58
      Quote, originally posted by petesell »
      can anyone speculate at what power levels the stocker runs out of breath in order for these manis to have a reasonable cost/benefit ratio? has there even been a back to back dyno with just a manifold swap on a BT setup?
      good thread [IMG]http://**********************/smile/emthup.gif[/IMG]

      No they cant.

    9. Forum Sponsor TyrolSport's Avatar
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      02-27-2007 02:05 PM #59
      Quote, originally posted by petesell »
      can anyone speculate at what power levels the stocker runs out of breath in order for these manis to have a reasonable cost/benefit ratio? has there even been a back to back dyno with just a manifold swap on a BT setup?
      good thread [IMG]http://**********************/smile/emthup.gif[/IMG]

      Based on the 386CFM of the stock small port, I wouldn't consider an intake manifold until I was over 300whp, or my turbo was maxed in it's current sub 300whp configuration.

    10. 02-27-2007 02:13 PM #60
      I rarely post on this forum anymore, but I happen to see this. BIG PROPS to everyone involved who made this possible, great objective data to override butt dynos.
      [IMG]http://**********************/smile/emthup.gif[/IMG]

    11. 02-27-2007 02:19 PM #61
      Most "choking" on these cars is the turbo running out of steam, or back pressure in the exhaust causing the boost to fall off. I wouldn't attribute this fall off to the manifold runner length.
      The fall in power matches the original one, if it was the slightly longer runners causing the problem you would see it lose power in the upper range.
      I saw some decent gains on my car with the small port 007 till it leaned out on the dyno. Most gains were in the midrange, which is what I was looking for. I am not sure what the max gains would be up top because I leaned out, however I feel that the upgrade from stock was definitely worthwhile. Even with a measly 265 whp. The fact that I was leaning out and went up to 100% duty cycle showed a big flow increase.

    12. 02-27-2007 02:22 PM #62
      Quote, originally posted by VariantStg3 »
      As far as the length goes Don if your willing? I read slappy saying that if all you wanted was great flow you would just bolt a plenum to the head? this would equal great flow with no velocity. Now, for my application I believe I could use some sorter runners to help horsepower from 5K-8K and also change the torque band upward.

      This is my problem with the ABD manifold, the taper they have and the stumpy runners make the runners part of the plenum. Good for flow, but bad for any kind of resonance tuning.
      The OEM manifold is actually kind of short for an engine designed to run 6750 max RPM. Looks more like a honda manifold than a vw.

    13. Banned Don R's Avatar
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      02-27-2007 02:26 PM #63
      Gents, I'm going to have appologize on Stu's behalf for deleting my posts. Apparently, I have been braking the rules so I am going to refrain from any further participation.
      Thanks.

    14. 02-27-2007 02:39 PM #64
      Don,
      enough with the fearmongering, there is no conspiracy

    15. 02-27-2007 02:47 PM #65
      I for one would have really enjoyed Don R's continued input here.

    16. 02-27-2007 02:53 PM #66
      There are other places that this can be discussed without outside influence, or restraint.

    17. 02-27-2007 02:56 PM #67
      Quote, originally posted by Don R »
      If I had the time I'd have the pleasure in doing so...but I'm swamped with work.
      With regards to your manifold...it would have been great if the OEM injector bungs protruded a lot less into the runner. IMHO, I'd suggest you leave your runners as is (Not unless you plan on revving past 8500 rpm.) - runner velocity plays an important role in increasing flow from better air flow lamination. This involves more flow vectors per cross-sectional area. Furthermore, if you were to increase the distance from runner 1 to TB entry this would help improve flow by eliminating the turbulence happening there.

      Modified by Don R at 9:16 AM 2-27-2007

      Well now that your not gonna participate here anymore hopefully you can get some other work done. Thanks conspiracy creators wherever you may be.
      Thanks for the input on the runner lengths I have put the saw-zall down and am backing away from the manifold. I am going to use the material I haveleft from RMR to lengthen the plenum. I only have 1.75" to play with though. I am gonna make drawings and post them on the other forum for you to gander at. Cheers!

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      02-27-2007 02:58 PM #68
      Quote, originally posted by VariantStg3 »
      Well now that your not gonna participate here anymore hopefully you can get some other work done. Thanks conspiracy creators wherever you may be.
      Thanks for the input on the runner lengths I have put the saw-zall down and am backing away from the manifold. I am going to use the material I haveleft from RMR to lengthen the plenum. I only have 1.75" to play with though. I am gonna make drawings and post them on the other forum for you to gander at. Cheers!

      Not longer,shorter.

    19. 02-27-2007 03:07 PM #69
      Quote, originally posted by enginerd »
      There are other places that this can be discussed without outside influence, or restraint.

      Yes I have joined up there, thanks [IMG]http://**********************/smile/emthup.gif[/IMG]

    20. 02-27-2007 03:15 PM #70
      Quote, originally posted by slappynuts »
      Not longer,shorter.

      I think he is talking about lengthening his plenum, not his runners.
      Giving more entrance length to his plenum should help with distribution.

    21. Member badger5's Avatar
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      02-27-2007 03:36 PM #71
      Quote, originally posted by axlekiller »
      Yes, #1 is closest to the throttle. Lower numbers on 007's in runner #4 are from the taper of the plenum. Once again, under pressure, runner #4 won't suffer from this.

      thanks for clearing that up
      [IMG]http://**********************/smile/emthup.gif[/IMG]
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    22. Member badger5's Avatar
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      02-27-2007 03:46 PM #72
      Quote, originally posted by petesell »
      can anyone speculate at what power levels the stocker runs out of breath in order for these manis to have a reasonable cost/benefit ratio? has there even been a back to back dyno with just a manifold swap on a BT setup?
      good thread [IMG]http://**********************/smile/emthup.gif[/IMG]

      i did a back to back on mine. before was a dual plenum largeport std tbody, then 007mani with R32 tbody
      gains 30bhp & 22lbft from same boost
      GT35R, Full-Race, DTA S60, SEM, WMI, 8 injectors, SQS Transmission, 1000kg car, >500bhp, Racecar (circuit)
      www.badger5.co.uk

    23. 02-27-2007 03:56 PM #73
      Quote, originally posted by badger5 »
      i did a back to back on mine. before was a dual plenum largeport std tbody, then 007mani with R32 tbody
      gains 30bhp & 22lbft from same boost

      Unfortunately the dyno you've mentioned and its results have no data on how they were compared to a OE manifold.

    24. Member IFIWASINMYVW's Avatar
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      02-27-2007 03:59 PM #74
      What happened to USRT, or did I miss somthing?

    25. 02-27-2007 04:24 PM #75
      It was against a modded intake.

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