LET'S SEE THE PLENUM ALREADY!

 

patience people.

next week is only a few days away.

 

I'm in for a Plenum. Well, as long is it doesn't break the bank. Forget the JIC. I only car about the stock strut bar.

Oh, Make it Chrome Silver

 

Bump its next week!

 

I'll be honest. I'm on board for the new gen Crawford plenum, but I'm sure this is capable of the same gains.

As I understand it from speaking with Doug, the center supports marked with X's below are the ones that most affect the flow dynamics of the plenum:

0 0 0
X 0 X

The newly designed plenum will have the screws marked below as X's deleted:

X 0 X
X 0 X

As I understand it, this causes the relatively thin aluminum to flex a bit. There are ribs in the new Crawford design which help this, but it will still flex to a certain degree without the extra supports.

The LSD N/A plenum, as I understood it, was a whole different design that replaced the upper and lower plenums. If this is the case, flex could be decreased by designing the runners differently (sort of like Top Secret did it a while back). That's what the original LSD plenum looked like, isn't it?

But hey, if the price is right, and it looks good, that's all that matters to me. I'll be on board to buy one. I vote for black.

Dan

 

No, the NA plenum is only the upper section and has NO RUNNERS. It is plastic and of factory design. It will have a GREAT price to it as well.

The FI plenum will replace both upper and lower, will have runners, and will be aluminum. It will be more expensive.

 

And don't forget it. (dubble post)

 

I got an email from lsdunique this afternoon.

my prototype plenum should be here this thursday (friday at the latest) and will be dyno'ed by ME! this saturday......

YIPEEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!

 

All Bark,

You gotta post a PIC this THURSDAY when you get it!

 

Don't forget to get a baseline or the dyno will be denied by the forums.

 

i am getting three! (2 runs a piece)
1 - friday - baseline with all current mods. (see below)
go home install lsdunique hi-flow cats.
2 - sat - morning - dyno to get #'s on high flow cats.
pull into parking lot and install NEW PLENUM!!!!!!
3- sat - late morning early afternoon - go back in for another 2 runs to find out what this puppy can do.

i plan on putting a few miles on the car between each dyno. (as many as I can!) )

 

Upper section of course would not have runners...

As those are found in the lower.

Correct...?

 

Yea the stock UIM doesn't have runners, but I was thinking the design replaced the upper and lower plenums, therefore he could integrate the runner design in a couple of ways I can think of, both of which wouldn't have a huge, flat, thin piece of aluminum that is prone to flex.


How come he hasn't posted pics if the thing is going out later this week?

 

what type of plastic are you going to be using? abs? pvc?

 

Hey Chebosto, so what can your Z do in a 1/4mile ?

 

jesus! pics already!

 

Pics will be up soon. All_bark is dynoing the FIRST model off production line. When that pops out of the magic machine it will be photographed and installed and dynoed. In a couple days I think.

Also, Phoenix, the stock upper section has no runners but you remember the pics posted the very first time LSD was talking about plenums? A variation of that pic will be produced with smaller runners for FI applications and NA applications (with less gains). The plastic plenum is stock shaped (like Crawford I think - never seen it!) and designed for NA applications (although mine will eventually see boost). Maybe later I will switch to the FI plenum but it will be more moolah.

 

Would love to know how/why the aluminum plenum with small runners will be better for FI. Looks great, wonder if there is substance behind that beauty.

 

It's been talked about 20 times. DO a SEARCH. Haha! In fact, that info is probably in this very thread!!!

 

Well, I don't see it, clue me in, lol.