rotarygod

Yes they are. The rules do state restrictor plate sizes and displacement limits (in conjunction with restrictor plate sizes) for all engines, including rotaries. I'm not sure how they classify the rotary as far as displacement goes but even if you doubled everything and had a 4 rotor, it still fits in. Where the rules are vague is in regards to rotaries and forced induction. The rules clearly state boost pressure limits and engine sizes and tells which engine sizes can and can't use forced induction. It even goes on to detail differences in these areas when it comes to 2 valve heads vs 4 valve heads and then of course the diesels have their own section of the rules. The rotaries however are not mentioned anywhere in the forced induction section where it clearly lists them in the naturally aspirated part of the rules.

Does this mean that forced inducted rotaries are not allowed to be used? It doesn't say they can't be but then again it doesn't say they can be either. Does this mean that they simply fall in the same displacement category that they do when naturally aspirated and hence the same boost level and restrictor plate rules? If this is so then which section of the rules does it fall under as they are different for either 2 or 4 valve engines. Which one is a rotary? You see how it's very vague when it comes to forced induction on a rotary in ALMS. I'm not sure how hard it would be to get some definitive rules written for it but as with any governing body, it probably isn't easy.

Here's a copy of the rules for 2007. Read over them and see how you interpret them.
http://www.mulsannescorner.com/chass.../2007LMP12.pdf

rotary crazy

speedsource got pole!!

https://www.rx8club.com/showthread.p...&page=31&pp=15

Senna

just read that too.

rotary crazy

just wachet the acura race to the race program, now thats a race program!! whao!! this is going to be a thoug season for mazda

Race Shooter

Things like the FI rules for rotaries are not specifically stated in the rules and are one of the things that would have to be discussed and come to an agreement with both parties to make work.

In other words, you want to do a FI rotary, you propose something to the ACO, they look at it, and approve it or come back to you and discuss what needs to be done to make it legal. I have heard that is one of the reasons it would have been so hard to do and could have possibly even been discussed and no agreement could be reached.

The rotary is such a strange engine in that regard and the ACO is a little gunshy about them since they dont want to have them dominate like the 787 did, so it can make it really hard to get something approved that can be competitive.

Senna

I (like everyone here) would love to see a rotary w/ FI (in ALMS), however, I think there would be big problems with fuel consumption issues and I don't see how they'd overcome it.
A question regarding the GT program-The 20b they're running is basically a peripherally ported motor and isn't based on the renesis right?? Anyone care to enlighten...

rotary crazy

they are suposed to be using renesis rotors

bern

Mazda's ALMS P2 Lola goes on the track for the first time tomorrow (in a few hours UK time), and ships out stateside on Wednesday.

On the RFQ, the rotary RFQ did go out, and it was to the usual RE historic racing suspects, and a few outside firms too.

Congrats to MazdaSpeed/SpeedSource for their 1st and 3rd today in Mexico City. The GT cars run 20B based motors with rotors, seals, and other misc from the RENESIS.

-Bern

rotary crazy

great news, hope to see this car (even without the rotary) on the track soon

Renesis_8

yeah me too, speedsource made my day, and i am satisfied with the rotary effort, so now its 'acceptable' for the ALMS one to race without one
________
BUY E CIGARETTES

rotary crazy

I think the only way you coul get the 550 hp needed for the ALMS is to rev the 20b to the 10,000+ rpm range, any one knows way they have so far keep the 20b in the 8,400+ rpm range?

I heard that if they went any higger they got over heating issues, even the speedsource cars have this problem too, is this true?

rotarygod

With a restrictor plate and the way a rotary uses air, you wouldn't make any power up higher. Porsche revs their engines over 10K, and F1 for that matter, but they also have very short stroke engines. We just can't play around like that with rotaries.

rotary crazy

but speedsource is not using a restrictor

rotarygod

Not talking about Speedsource. I'm talking about the ALMS cars as they all use restrictors. Speedsource isn't in ALMS.

rotary crazy

thats why I said the speedsource cars where getting the same problem, the engine overheats when rev over 9,000, at least thats the info I have

Renesis_8

it'd be cool if the 3-rotor could give the SS GT cars over 500hp when they need it, i.e short sprints.. overtaking, qualifying... etc.. at the expense of shorter engine life

the #70 was unbelievably quick in practice, their lowest time i saw was 1.28.5, thats almost a second faster than any other GT cars in mexico.
________
Peak Towers Condo

rotarygod

There are really only a few things it can be. One is that they don't have adequate sized coolers for their power level. Just because you overheat doesn't necessarily make this true though. The flow rate through the system can be either too fast or too slow which would cause inefficent transfer of heat to the radiator core. They could also be suffering from water pump cavitation at high rpms. There's not much else it can be.

rotary crazy

thats what I thoug too, but any way the speedsource guys are doing great

another thing RG is if you notice how big the oil coolers on the #70 and #69 cars are, remember what we talked about some time ago about the oil coolers in the courage

Berm should get in here and tell us how the new car testing go

David Haskell

Just to let everyone know. At SpeedSource we rev the engines to around 8600 rpm's. We do this mostly to get better fuel mileage in the race. With the intake runner lenghths we use the BSFC goes through the roof if we rev them to 9000. It really has nothing to do with engine tempature. Our water temps are always below 190F no matter what we do.

Thanks for all of the support from the Mexico race.

rotary crazy

Mr. Haskell Congratulations On A Great Race And EXELLENT Results

You Guys Rock

Thaks For Representing The Rotary Comunity And Making Us Proud!!

Renesis_8

thanks for the response!
________
CHILD NEXIUM

BlueRenesis82

rotarygod

Awesome David. Haven't seen you on in a while but let me say it was great meeting and chatting with you at Sevenstock. Congrats on the win.

That's quite impressive that your coolant temps never go above 190*F. That's lower than street engines!

AggieLuke

FYI there's an article about the LMP2 test today at

www.dailysportscar.com

It's normally a pay site but they're having issues so the login is available on the mainpage in red text.

No pics, but it's nice to know it fired up and is now on its way to Sebring!

CERAMICSEAL

David,

It's time to go to bed. How do you do it? Build and test engines for more than one series, offer support for some teams and drive?

Are you human?

Actually, thanks for being so human and so real. May God continue to bless you in all that you do.