double barrel intake

[LJ851]

...i think it should be clear plastic...

hee hee, for fun, it's fun! For serious, it's ghetto!

t

Ooooohh, Fish Tank Plenum !!

I can see it now.

[TobyB]

...i think it should be clear plastic...

hee hee, for fun, it's fun! For serious, it's ghetto!

t

[fporro]

I'll copy and paste my reply from www.e30tech.com ...

Just by coincidence our firing order is 1/5/3 and 6/4/2 which is same as how i've made them, isn't that better for velocity since there's less pause between pulses ?

I'll make a 1/2/3 & 4/5/6 set after weekend and will thighten tension on "sock filter" to visualise resonating waves even better.

PVC pipes are available at any home improvement shop. $25 worth at the most., don't forget the proper glue for them.

CF heater fan cover was 79 Euros, link does not work anymore (post # 6) but better pics here ... http://www.r3vlimited.com/board/showthread.php?t=175415 ... BMP used to sell them too.


Here's what I've seen at local yards so far, all inline 6 cylinder type:

- This first three pics are from same manifold, I like how it splits, accumulates and then merges at center (2 mergers + 6 cylinders) to stabalize pulses ???








- This ones are imular to log type I made, first it's the only one with tappered design...













- Ford's dual ported ...





- Toyota's look like a smaller version of our big six series cars ...





I do have a dbilas/m20 compatible CSL like plenum that's requires brake booster delete, opted to chop it up and looked inside, is not very smooth and it can be repatch ($50), no big deal.

Realistically I should have made a 1 1/2" (37mm) spacer to move brake booster foward, that would have stopped runner #6 from colliding with PVC ones, CF one has runner pointing towrads front so spacer would not help., last pic from sellers website, notice lack of brake booster., it also required throttle cable bracket to point up instead of to the left side, did that already.














while in the subject of electrically activated split plenum's, bought this M70 fly by wire throttle kits, sent one to Keith whodwho, maybe he'll get into it ;)



thanks for pleasent conversation.

[lowsodium]

I always thought it would be nice to have a smaller intake on top. The stock one is pretty big and covers everything underneath it.

[AlphaE]

yeah.... where did you get that cover?? and i totally get the for funsies. but it looks awful:) but so does my tuneable muffler held together w sheetmetall screw. Lets here it for crappy looking projects that provide a learning experience:)

[NV325i]

Like your carbon fiber firewall cover. Where did you get that?

[Nick_S]

I know nothing about actually making intakes but it seems like a cool idea. Refine the length and size then have it made from alum. That sound is fantastic though!

[nando]

the volume is way too small. also, people complain about the size of the throttle plates (too big), not the plenum size. even the standard dbilas plenum is too small.

[markt51]

I really like the sound of that intake.

[TimbyMaTombo]

Similar to what F34R said, it seems that the rear cylinders wouldn't get nearly as much air as is needed and the difference in airflow from front to rear would be drastic which I wold imagine makes it difficult to get proper AFRs in the each cylinder.

I understand it's just for funsies but if you ever more seriously looked into it, rectifying that would be my first priority.

The double barrel shouldn't make it as bad since the distance from the entrance of the intake to the rearmost cylinder is shorter and has less cylinders to take air.

Neat idea though. Creativity is the only way to improve something :D

[CHIF8008]

haha continue

[george graves]

I'l like you to do an exhaust manifold next.

[CrusherCurtis]

Sounds good, looks awful.

I like the idea, but I would like to see it in aluminum.

I'm with him. Maybe a nice polished aluminum.

[F34R]

The straight 6 design might make the rear intakes suffer. Needs to come straight at all 6 to make equal for all. Just like BMW designs them. Ever think of using 3" and drilling out holes for runners then gluing it all together?

The double barrel is a better setup imo.

[Fusion]

You may want to take a look at http://en.wikipedia.org/wiki/Variabl...ntake_Manifold and how the intake manifolds on Mercedes M104 engines work.