Would his initials happen to be DS?

You are all smiles. Everytime I've ever seen you, you've got a big smile on your face and are happy. You also know how to take a joke which is really cool. I wish I could come play with your toys or at the very least drool over the shop for a while.

that most be one of the engines Dennis bought from mr.Downing

No DS in the initials.

Paul.

Did that 4-rotor come out of this car?

If it was, I really wouldn't be able to say. I try my best to stay within my boundaries. It keeps me 'Connected' if you know what I mean :)

Paul.

Check this video out! WOW!

Ok, now go to 4:40...You will see the working intake system moving in the R26B engine bay! :shocking:

Edited..."variable length intake trumpets providing air to peripheral intake ports.."

That's not a Renesis, it's an R26B 4 rotor motor. It has 3 plugs per housing and variable length intake trumpets providing air to peripheral intake ports.. They were around $100000 to $120000 when they were available to the Racing community and made 650 to 700hp NA at around 9000 rpms.

Paul.

:doh:
Edited due to stupidity on my part...LMAO

It helps to pay attention and actually see the 2 extra rotor housings in the pictures! :spank:

No he is saying that there is no variable trumpet intake on any Renesis. The engine they worked on is an R26B which is the same as the engine in the video. The Renesis engine's they work on haven't had any intake manifolds on them in pictures and they'd be stock if they did.

There is only a couple of people who it could have been so that narrows that down pretty well.

You know I'm a phone call or a PM away. Just as long as nothing gets posted.

Paul.

Ring...ring...

It helps to pay attention and actually see the 2 extra rotor housings in the pictures...I officially won the dumbass award! :spank:

I swear I only saw a 2 rotor in the pics...LOL!!

Now that I made a fool of myself...Whats the possibility of adapting the variable intake to the 2 Rotor Renesis?

To some extent....that's what the SDIAS does. Provides a variable intake tract length

The runners on that engine are designed to be run at higher RPM...they wouldn't work that great for on the street...they would need to be longer for lower rpm function.

Well spoken.

Tell me that wouldn't be kewl to see that pop out of our hood. :rock:

Edit: Actually doesn't the SDIAS activate at different RPM's? In other words depending on the RPM only 2 valves are active and at higher RPMS all the valves open giving air to all 6 ports? I heard somewhere that this has something to do with "harmonic tuning". Not sure I just remember something like this.

The variable length ducts on the 26B engine are constantly variable......an ideal situation

Mazda made a system in the Renesis that tried to give the same effect...only in a less complex manner. You can see the results on any dyno sheet. Just when the power starts to drop off...another valve will increase the intake tract volume...and allow more flow...

it's difficult to tune that though...as seen by the dips in power when the valves open....and the variation in A?F as they open as well..

I have noticed that some of the tuning coming out of the Interceptor, and RB seems to do well around these transitions.....better than stock anyway :)

I always thought the intake system was very complex. It would be nice to see an upgarde to this system. Thanks for the response...I am getting educated.

I wonder what the outcome of turboing an upgraded variable valve intake manafold would be...Are there more gains to be had from the stock intake manafold.

(Redeeming myself from stupid comments earlier) :evil_laug

Actually...when you go FI...once you are in boost this all changes. Simplistically, you want more flow.......so you will want to chance the points where the intake tract valves open....or leave them open all the time.....

Paul, something else I would like you to look at / ask Rick about.

As you tear down the Renesis short blocks, could you examine the apex seal ends that would sweep by the exhaust ports? I had an interesting discussion with MazdaManiac last night about the effect the heat from the side exhaust port might have on the very end of the apex seals that travel over that spot.

I'm refering the the edge supported by the corner seals. Let me know if that doesn't make sense.

What are the chances that the R26B will see racing in LMP2.
________
EBONYHUNNYX

That would be nice but it would be a shocker to me if I might be frank.

Paul.

They seem un-affected. They only slightly move over that region. The side seal sees much more of it and still actually doesn't suffer much for it. The gasses are all to eager to shoot out of the port rather than hang out with the side seal. Side seal springs are tortured in these engines due to the side seal clearances. The oscillation that occurs does a number on the ends and can even result in spring breakage.

Paul.

good info. Thanks Paul