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Sensors and velocity stack plenum

 
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Wolf_Tm250



Joined: 26 Aug 2006
Posts: 475
Location: Parma - Italy

PostPosted: Mon Nov 25, 2013 1:50 pm    Post subject: Sensors and velocity stack plenum Reply with quote

Hi,
I'm going to weld some bungs for map, vacuum for power brake, iat on a plenum with velocity stacks for a turbo engine, and I wonder if there is any place to avoid where pressure or velocity is uneven or not real.
Thanks
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TM enduro 250 "forever 2 stroke!"[55]
Toyota Celica Gt-Four ST205 [588.25Nm@4957rpm]
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Power-Tripp



Joined: 26 Nov 2008
Posts: 441
Location: Deep South, AL, USA

PostPosted: Fri Dec 06, 2013 1:26 pm    Post subject: Reply with quote

Do you have photos of the plenum? Different designs have different issues - especially with standing waves.
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Technology is so much fun but we can drown in our technology. The fog of information can drive out knowledge.

The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.

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Wolf_Tm250



Joined: 26 Aug 2006
Posts: 475
Location: Parma - Italy

PostPosted: Sat Dec 07, 2013 2:14 pm    Post subject: Reply with quote

Power-Tripp wrote:
Do you have photos of the plenum? Different designs have different issues - especially with standing waves.


Here it is, thanks








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TM enduro 250 "forever 2 stroke!"[55]
Toyota Celica Gt-Four ST205 [588.25Nm@4957rpm]
EFI 101 + Advanced classes
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TrollTuner



Joined: 14 Jan 2009
Posts: 24

PostPosted: Sat Dec 07, 2013 7:56 pm    Post subject: Reply with quote

This might give a little more insight.

http://www.profblairandassociates.com/pdfs/RET_Bellmouth_Sept.pdf


http://www.profblairandassociates.com/RET_Articles.html
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Wolf_Tm250



Joined: 26 Aug 2006
Posts: 475
Location: Parma - Italy

PostPosted: Sun Dec 08, 2013 6:40 am    Post subject: Reply with quote

TrollTuner wrote:
This might give a little more insight.

http://www.profblairandassociates.com/pdfs/RET_Bellmouth_Sept.pdf


http://www.profblairandassociates.com/RET_Articles.html


Very interesting, thanks!
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TM enduro 250 "forever 2 stroke!"[55]
Toyota Celica Gt-Four ST205 [588.25Nm@4957rpm]
EFI 101 + Advanced classes
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View user's profile Send private message Visit poster's website
Power-Tripp



Joined: 26 Nov 2008
Posts: 441
Location: Deep South, AL, USA

PostPosted: Fri Dec 20, 2013 8:46 am    Post subject: Reply with quote

TrollTuner wrote:
This might give a little more insight.

http://www.profblairandassociates.com/pdfs/RET_Bellmouth_Sept.pdf


http://www.profblairandassociates.com/RET_Articles.html


There are two problems with the Blair bellmouth form:
First is that it is large, and difficult to fit in many plenums due to intake c-c spacing. If this form is modified to fit closer together, then it does not perform as well as a simple radius 1/2 of opening diameter.

Second is that compared to a opening radius 1/2 D, the Blair form rarely produces pulse tuning waves equally as strong. This means that is under-performs the smaller and simple radius form in most cases in actual use.
_________________
Technology is so much fun but we can drown in our technology. The fog of information can drive out knowledge.

The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge.

Daniel J. Boorstin
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