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Thread: VVL Intakes - real life learnings

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Posts: 1-10 of 11
2015-07-02 11:40:59
#1
VVL Intakes - real life learnings
So besides all the theories on plenum sizes, entry angles, runner lengths, tapers, diameters, round vs oval etc etc etc. What are the highlights of practical VE intake learnings from members who have used custom intakes to date? ,

I'm aiming for about 2.2-2.5L plenum volume, 55-50mm-port matched ID runners, velocity stacks, ~8"+ runner length head to stack entry. Keen to hear what worked/didn't work for others.

I am also considering a dual plenum /diffuser chamber style intake in order to improve equal air distribution, but there is very little info on this (especially for n/a applications). My first stumbling block is that one paper will say the slot needs to equal 85% of the TB area and another states 110%.

for those unfamiliar with this style intake:



2015-07-02 12:41:56
#2
they (generally) work, they sound great, they look good. they cost. i think your specs are fine.

i have this
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my time again, i would try and make something like this fit my rhd n15. main reason being bigger better-spaced runners, and being able to put a longer intake pipe on it than mine.
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i think jamie marsh and lance hayward knows the best specs for one. he tried to get something going, and put in some diameters, in this thread.

http://www.sr20-forum.com/vvl/70816-center-feed-sr20ve-intake-manifold-design.html

being centre fed makes for really long runners. sr20-autech's one sure as hell works.

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meanwhile the PR guys still swear by the shorter ( heavily ported ) xcessive.
2015-07-03 05:04:33
#3
Here is my custom made from good Engineer and with computer modulation for Sr20VET .






Not yet tested but i think that works greate !
2015-07-03 07:24:22
#4
Serz that looks great. It's exactly what I had in mind so it's nice to see a finished item. Here is a little sideview pic of what I have been doodling during meetings at work.




I cannot weld so I'm making mine out of composites. I just have to have a much smaller and calculated slot between the inlet chamber and the actual plenum. I'm toying with the idea to make a plastic divider so that I can experiment with different slot sizes.

What is your width on the main plenum (top to bottom?)
2015-07-03 17:08:39
#5
Do you mean this width from top to bottom or ?

Its about 5+ inches or 14,5cm !
2015-07-06 13:41:44
#6
Exactly that yes. Thanks


I'm wondering how important the location of the slot into the plenum is. For boost it's probably irrelevant almost. For n/a I'm thinking it needs to be located in front of the bellmouths though...
2015-08-26 16:49:30
#7
NISSAN

Saw this browsing the 240 forums, supposedly this adds about 3-5whp allowing smother airflow into the IM. They're in the works of making a q45 TB one so I wouldn't see why not the VE guys can use these
2015-08-27 01:50:43
#8
Flowstack in the Tb eh?
Seems gimmicky when you consider the throttle plate assembly in the way immediately at the end of the bell mouth
2015-08-27 15:36:59
#9
Originally Posted by zeneffect
Flowstack in the Tb eh?
Seems gimmicky when you consider the throttle plate assembly in the way immediately at the end of the bell mouth




Good point, it seems they have just enough space between the plate & stack to perform normally

ENERGY HALO

More in depth info here.
2015-08-27 15:48:05
#10
Originally Posted by Arteeste
Originally Posted by zeneffect
Flowstack in the Tb eh?
Seems gimmicky when you consider the throttle plate assembly in the way immediately at the end of the bell mouth




Good point, it seems they have just enough space between the plate & stack to perform normally

ENERGY HALO

More in depth info here.


That is the biggest load of crap I have ever seen. Please don't waste your $$ on this. The famed pop charger is bad enough.
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