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69942 Views 402 Replies 52 Participants Last post by  mukle
Do we really need them?
This is the question that I am researching right now.

Turbo or Supercharged piston engines typically use many cylinders arranged in-line and one or two superchargers. Superchargers deliver air at a relatively constant rate, while cylinders demand it in a varying manner, as the valves open and as piston speed varies through the stroke. Simple direct ducting would give problems where the nearest cylinders received more airflow. The pulsating demand from the cylinders would also show problems of either pressure waves in the duct, or a shortage of inlet air towards the end of the inlet phase.

The solution is to provide a large-volume plenum chamber between the inlet and the cylinders. This has two benefits: it evens out the difference in path restriction between cylinders (distribution across space), secondly it provides a large-volume buffer against pressure changes (distribution over time
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btw. I know a good CAD desiger for the plenum flange project. He is the member "mukle" here:D

Goodness Gracious Karzza where an Earth you are planning to take me into ???

Plenum sounds like liber food to me but if you could be the master mind of this project... let see. Nothing promises anyway. Maybe it could be much better entertainment than watching telly all night long during our dark winter time...
Yup that's correct. Fifth "paper" flange fits quite neatly and machining drawings has been done. We are not able to do any mistakes nor compromises here but 100% quality.

After Karzza has that IAT sensor we can make final decision where it should be mounted. In this phase changes are still easy to do.

I think we should pay some attention in choosing good aluminum alloy so there is possibility for welding and anodizing etc.

regards Mukle

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Nice work mate! You have great machining skills. Especially I wonder how inside cuttings have been done. You must have quite long milling tools in your machine.

Back to this thread and wonders about Trask plenum integration. Is 25mm too much rise for the plenum so it won't fit under cover?

Have anybody measured what is Trask plenum flange inside diameter and is it round within reasonable like 0.1mm (.004") tolerance?
what diameter do the two "venturis" have? Would this fit 60mm throttle bodies?
Now 56/62mm.

What are major differences between 60mm throttle body and original? Is it just with larger holes and accordingly fixing holes are in larger diameter or is there something else?
Come on rsc!
As the founder of the topic You are the most quilty for the project:deal:.
'Cause at 5 o'clock they take me to the Gallows Pole...:spank:

...just kidding!...

...I have good feelings about this. It will fix so many issues. Hopefully we can realize this too. Take a challenge and sign in and you will be the first in line.
One complete K&M (Karzza) Plenum unit with flange still available w/o surface finishing. Can be polished or anodized. Decided not to install turbo at this time.

Four Flange units also still available.

PM contacts me or Karzza if interested in.

Boost regards,

Four flanges available and one complete unit with plenum. Plenum is absolutely piece of art!
Yes MCX kit is convincing and entrepreneur is helpful guy (y)
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