mark kibort

I tend to believe you. I didnt see much on my 84 part euro 4.7 going from 12 to 12.5, as it was only about 3hp. But, i have to imagine going from 11:1 to 12.5 might be a bigger potential for gain.

Randy Prout has a devek 6.4 liter with the same set up as me, but with big valve heads. he was at around 380rwhp and just fuel tuning alone with the shark tuner, they got it to 420rwhp. Im trying to find out where the fuel was and ended up . I should know something tomorrow when Randy pulls out the old dyno runs. (devek, mustang dyno and shark tune)

mk

Kevin Johnson

2009 Porsche 911 Engine Oil Sump Test Rig

http://www.youtube.com/watch?v=fv53RbvgfGc

Porsche started working on this a bit over two years ago. Coincidence? I think not. That is about the time of the embarrassing (for them) serious 928 windage control discussions on Rennlist.

Despite Jason Kavanaugh's (Edmunds.com) assurances, this machine will simulate only certain 1.4G transient maneuvers. I do not believe Porsche engineers spent two years developing a serious test rig and left out some hydraulic rams.

123quattro

Very cool test rig. Working for a car company I'd also say with a good bit of certainty that this forum had zero impact on getting that thing built.

Kevin Johnson

Yes, like the 2003 SRT4 coming out with an integrated pan gasket scraper after forum members asked me to design one. Close timing? Coincidence?

Vielleicht aber meine Ich nicht, mein Herr.

Edit: Daimler-Chrysler was also directly asked whether they would allow some of my products to be dynoed in combination with some other very well known manufacturer's products to see if they would correct deficiencies in same.

They refused. Lots of politics in aftermarket parts.

928autobahndreamer

Porken, I think you just found out how to push Mark's buttons.

slate blue

By Kevin Johnson

I know for a fact that Porsche didn't develop this rig, there was a write up in Race Engine Technology, I could find it if I have to but it was invented for general use in testing oil systems, not just Porsche.

Greg

123quattro

I can draw no similarities between Porsche and SRT. Manufacturers do read forums more than you think. It's either for marketing purposes or to find employees who blab confidential information.

Kevin Johnson

I know that employees of manufacturers read forums -- that's you instantiated. But I sell parts to engineers working for OEMs on a regular basis. I assure you that many engineers working for OEMs read forums and have pride in the marque they help build.

If you can find no similarities between SRT and Porsche I am not sure what to say to you.

Edit: I remember growing up and in Dearborn the nextdoor neighbor had a boarder who was an engineer at Ford. He was provided a car and he would pour over that car in his extra time and fix every little detail. There was always a fight at Ford to see who would get his vehicles after he received a new one. He lived on Cromwell street off of Outer Drive.

Kevin Johnson

Hi Greg,

A battle of the magazines: http://www.edmunds.com/insideline/do...ticleId=127890

They appear to be reporting what they were told by Porsche itself.

My guess is that Porsche designed or specced it. GKN may make rods for Porsche and many other clients. In what sense is a GKN engineer working on a Porsche rod design by extension a Porsche engineer.

Porsche loves to do engineering on contract for other firms so I am sure the rig would not be idle.

I would be interested in that article. I met the publisher last year -- very nice guy.

123quattro

What I meant was Porsche is a manufacturer. SRT is a small in house tuning arm for Chrysler that is not subject to some of the normal design and release rules.

Kevin Johnson

I think that there was a lot of extraordinary information brought out into the worldwide Rennlist discussions including that Porsche actively threatened race teams that wanted to campaign the 928 with withdrawal of all support. That really happended at least here in the USA. The discussions encompassed the 928 and the 944 and 968 engines -- a good twenty year swath.

Combined with the overwhelming evidence that they tried to fix this problem over and over and over and did not would be strong reason for embarassment. Look at the patents that Porsche has received since then focusing on air entrainment and oil control. They were determined that this would never happen again.

Suddenly, circa 2005, 2006, they decide to engineer -- have engineered -- whatever -- a complicated test rig to publicly re-evaluate (re-emphasize?) Nordschleife testing that they had already done on their integrated dry sump. This to try to remove all doubt from Porschephiles' minds that such problems are in the distant past. There is no substitute once again.

I do not think that is a stretch at all. Peg it under your own stated monitoring aegis of marketing because that is exactly what it is.

But back to Mark. Mark, seeing that engine do the mamba is what a good suspension will subject the engine oil to. It is a visual aid just as Porsche's marketing arm intended.

Charley B

Leaving the conclusion that they still exist in the present?

A fruedian slip?

Just yanking your chain, Kevin.

Kevin Johnson

No, it is actually open to both interpretations. Shaw would love it.

Seeing that you caught it you would likely appreciate the cognates in vision science with ambiguous figures. Once interpreted it is difficult to impossible to remove the imposition of structure (though yielding to perceptual flickering). Procrustus in action. He was a man far ahead of his time.

In pyscholinguistics it would be related to parsing of continuous strings of sound into sentences and the loss of babel to language.

But I like both interpretations so hold no guilt in that chain yanking please.

Charley B

That's why I still have that monkey in the back room banging out the Kama Sutra on my trusty Remington. If he comes through, I don't know what I'll do for the illustrations.

Bill Ball

Mark: Hope it goes super well this weekend. I was planning on coming down Sunday, but those plans have been dashed. Best of luck!