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Stock pipe inside
http://www.pilotodyssey.com/PO/viewtopic.php?f=1&t=19699		 Page 1 of 1
Author:  canadian oddy [ Mon Feb 24, 2020 10:46 pm ]
Post subject:  Stock pipe inside
This is the stock pipe that got damaged in that dyno clutch explosion.
As you can see there is a perforated material inside that is spot welded along the seam. The stock pipe also has three divets on the outside of it on each side of the pipe. These divets are actually stand offs for the perforated metal. You need these stand offs because it appears that there is also sound deadening material behind that perforated metal. My money says it's asbestos but not sure.
CO

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Author:  canadian oddy [ Tue Feb 25, 2020 2:21 am ]
Post subject:  Re: Stock pipe inside
Some more pics and info.
CO

Attachments:
File comment: Here is a pic of those divets I was talking about. They're stand offs on the inside. They hold the perforated screen away from the side so that there was clearance for the asbestos sound deadener.
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File comment: Even welded the little back bone back on it (for the lack of a better term).
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File comment: Will paint it up tomorrow.
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File comment: Here is some numbers I found on it.
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Author:  go oddy [ Tue Feb 25, 2020 9:55 am ]
Post subject:  Re: Stock pipe inside
Looks good. Did I miss it, did you gut the pipe or just repair?
Author:  canadian oddy [ Tue Feb 25, 2020 2:00 pm ]
Post subject:  Re: Stock pipe inside
go oddy wrote:
Looks good. Did I miss it, did you gut the pipe or just repair?


I took all the guts out.
CO
Author:  go oddy [ Tue Feb 25, 2020 3:25 pm ]
Post subject:  Re: Stock pipe inside
That will increase your flow significantly I bet.
Author:  Kuma [ Tue Feb 25, 2020 4:18 pm ]
Post subject:  Re: Stock pipe inside
be sure to check you jetting, the pipe not should work more like it should
Author:  fully [ Tue Feb 25, 2020 8:33 pm ]
Post subject:  Re: Stock pipe inside
Ok now you need a stock pipe and dyno that. Then dyno this pipe. Wonder what the difference will be
Author:  canadian oddy [ Tue Feb 25, 2020 8:54 pm ]
Post subject:  Re: Stock pipe inside
fully wrote:
Ok now you need a stock pipe and dyno that. Then dyno this pipe. Wonder what the difference will be


Don't got a stock pipe in my parts supply anymore.
However I will be putting the other two machines on the dyno but I am waiting for a mini tach. Apparently it's suppose to be here the first week in march. Well we'll see. My other order got cancelled so I am not optimistic. Without it I can't do any dyno runs ---- period.
All three machines have a slightly different configuration. I'm interested in the results as well.
Also will have to figure out how to make up the sheet because of the two ratios involved (gearbox ratio as well as clutching ratio). I need data first though.
CO
Author:  fully [ Tue Feb 25, 2020 10:57 pm ]
Post subject:  Re: Stock pipe inside
princess auto doesnt have any cheap tachs that will work, what about amazon
Author:  canadian oddy [ Tue Feb 25, 2020 11:17 pm ]
Post subject:  Re: Stock pipe inside
fully wrote:
princess auto doesnt have any cheap tachs that will work, what about amazon


Princess auto only has those laser tachs and I already have one of those to read the axel rpm. It won't work for the Engine because I need all of the data recorders next to each other so that I can film it on my phone. Therefore I need a wired tach.

Amazon -- yeah that's where this crap is ordered from but it comes from China almost always. We don't make anything in north america unless the company can make a gazillion dollars for one item and pay the working man peanuts. Based on statscan data I am making 8/hr less than I made in 1982 based on inflation :shock: .
Go to the statscan website and check your pay. You might be shocked.
CO
Author:  liduno [ Wed Feb 26, 2020 10:39 am ]
Post subject:  Re: Stock pipe inside
I know it sounds counter intuitive, but there are scenarios where a textured finish on a surface actually improves air flow. However, I think this situation is as you suspected, the perforated material is probably just for sound.

In the spirit of your inner mad scientist, if you had 2 pipes, could you do some kind of rudimentary flow test? I imagine a 55 gallon drum emptied through your tune pipe..lol
Author:  hoser [ Sat Feb 29, 2020 6:08 pm ]
Post subject:  Re: Stock pipe inside
canadian oddy wrote:
go oddy wrote:
Looks good. Did I miss it, did you gut the pipe or just repair?


I took all the guts out.
CO

You now have a cheater pipe, I did the same thing on my Pilot back in the day when racing the "Stock" class, used it for the Modified class too.

Check your jetting
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