Shmurzik

This is beautiful! Can I steal the JPGs?

sweanders

Niels - you have a PM!

Lagavulin

I have a buddy who has a stock Ninja 600, and there’s no way a stock 928 can even come close to that particular bike.

Don’t listen to that crap, he was *PISSED!* he couldn’t go up against the ‘made in heaven’ showdown. I can’t blame him though since he’s spent 3 years getting our cars to where they are today, and he had to sit it out and pass the baton to someone else to see how his work stacks up against a bona fide superbike. I told him it was his tuning that beat the YZF, and I hope he can take pride in that fact. I had it easy and paid him $8k for 3 years of hard-earned experience. It wasn’t an 928 S4 that beat the YZF, it was a ‘MURF 928 SuperShark’ that beat the YZF. It is important to keep things in the proper perspective.

I always enjoy reading yours and Carlos’ right-to-the-point posts!



Well, all the other ones are pretty anti-climatic after that. There are quite a few of the smaller turbo charged cars, an SVT Lightning, and some Mustangs.

My favorite story though is I was cruising along in a 35 mph zone one night, and a Mustang ‘bounced’ me from behind: he came up really fast from behind, downshifted and let his clutch out chirping his tires when he was right along side me; startled me! He proceeds to rev his engine and lurch his car next to mine for about 30 seconds which is a long time, but there’s no way I’m going to do anything on a 35 mph road. Finally he got bored and took off; his exhaust sounded great and was pure music!

I was now out of town and headed in the same direction as the Mustang on a four lane highway, and wondered if he’s still up there. So I gave it some gas, and sure enough, I see his tail lights and catch up to him. A traffic light was ahead, and he puts his right turn signal on and pulls into the designated turning lane; damn he's turning!

So disappointedly, I pull up to the light heading straight with the Mustang on my right waiting to turn right. I’m not looking at him, but I hear his engine revving, and next thing I know, he has pulled up next to me on my left!

I don’t even look at him as we both watch the light, his engine holding steady, sounding like 2.5k RPM. The light changes, and we’re off!

It wasn’t even close. Despite spinning my tires and bouncing off the rev limiter in first, I must have had at least an 8 car lead when I shifted into second. When I nailed it in 2nd, he dropped back so fast I thought he had given up, so I let up and shifted directly into 4th. As soon as I did that, he came up fast behind me, but did not ride on my butt; apparently he was still accelerating well after I shut down.
I really didn’t think much of it since it was ‘just a Mustang’.

We travel a short distance and another light was ahead and I notice his right blinker is flashing. So I slow down so that he can pull up in the right turn lane. He motions for me to stop and I roll down my window and notice his supercharger whine and he says nonstop:

Holy ****! What do you have under the hood? Holy ****, I run 12.9’s all day long and you left me like I was standing still! Man, that is one beautiful bad-*** car; what is it?!

I thanked him, and told him it’s a Porsche 928 with a hot-rod German V-8. He was most gracious.

What was really funny was that his girlfriend is in the background the whole time heckling him saying, he beat you; he beat you; he KICKED YOUR ***! All the while she’s laughing her head off; it was so comical! I guess maybe he’s a big talker out on the streets and she finally had something to say otherwise.

That was when I first realized we were on to something special.

I think this a big guy who got beat up by a ‘new’ big guy. 'Those guys' always think they own the road; not this time.

sweanders

Lagavulin, are there any kits available from Tim Murphy? Since he has made 3 conversions already maybe there is a possiblity to work something out and provide the hardware?

BC

There are some steel sandwitch gaskets that the 944 turbo guys use. They call them the "ultimate headgaskets".

The fuel system trouble, of course, is the REASON the headgaskets are blowing, it seems, so this is #1.

Bigger injectors? Better fuel delivery to the far end of the fuel rail (not difficult - seems you could just put a "Y'at the initial feed, and one goes to the back - one goes to the front? More gross fuel flow from the pump?

I am re-routing and redisgning part of my fuel system right now so I need to know these things!

Rufus Sanders

Damn. ... Um, I don't feel bad about bombing around Pepin Co. anymore. You guys are nuts! (take it as a term of endearment!)

Eriik, Z and the rest of you WI animals are welcome to lead the next MN. WI 928 Fun Run. I'm sure the rest of us won't mind having you guys Plow the Road for us. Great story, and awesome pics Erik.- Ruf

Warren928

WOW!!!

Impressive story to say the least, incredible acceleration to beat an R1, thats fast enough for me. I can see the fuel delivery problem to the far injectors being solved being a BIG improvement to reliability issues on the other cars. Definately throw that into the S/C kit.

bcdavis

The thing I think is coolest about that kill, or any kill, is beating someone with a stock vehicle,
that cost more than yours did, and is supposed to be very fast.

I really appreciate people who do their own wrenching, and make a car really quick.

And I love it when those people beat others who just plopped down some cash at the dealer,
and bought a new M5, or a Viper, SVT Mustang, Ferarri, or even an R1...

No matter what kind of car or bike it is,
I like it when someone thinks they will beat you, and they learn otherwise...

But yeah, I will still put my 900RR up against any stock 928s, s4, GT, GTS...

But still, I know what vehicle I take on long trips, and for long runs at high speeds...
And it's not the bike. The 928 is so much better on the street, on the freeways, etc...
But if it is a drag race, or a freeway race, or even a race in the twisties, I'll take the bike...

http://www.bikepics.com/bikemovies/speed/

Lagavulin

To tell you the truth, I'm not sure what he has left. I do know he initially planned on making only 5 kits. I know he's out of town today, so he probably won't be responding until at least tomorrow.

BC

He better make more!

That's okay. I'm special. He'll make one for me because I support the Green Bay Packers, and know that Cheese Kurds are a food group.

Z

I know that he has most of the parts for several installations in his garage right now. I was on the phone with him and the guy with the 26psi car last week. They were trying to talk me into coming up there Thursday, we'd install a supercharger on my car Friday, and then show up at Road America with it finished and ready to go on Saturday. How hard do you think it was to have to say no to that?

They're in the process of having some custom head gaskets made, in addition to considering a couple of other even better but more involved solutions.

The coolant flow pattern is also suspected to be at least part of it. Things were working well in the red car at 21psi of boost. The reason for increasing boost in increments was so that issues would come up and be corrected one at a time, instead of suddenly having a whole mess of problems all at once and not knowing what all was going on. The red car has 42lb injectors, a 930 turbo fuel pump in addition to the stock one, and a method to increase fuel flow beyond the normal capacity of those two pumps. The guy was looking at a fuel pump to replace all that with one pump capable of supporting 2,000hp the other day when I was there.

There'll be some available. He seems kind of anxious to get started on the ones for the earlier cars as well, but there never seems to be enough time to do stuff.

Rufus Sanders

Z, Tim, Erik, Lagavulin, I gotta ask: Besides wild moments like the bike race, how do you / how can you, use all that power? 500 hp sounds awesome. Who wouldn't want it? But can you really use it at under 100 mph?

I just ask because a GTS has nearly 70% of that and you can 't hardly use that in the real world. Can you??? I mean my meager 220 hp keeps my license on it's toes, ya know? I guess I should ask the Devek folks and Mark A. the same question...- Ruf

hacker-pschorr

If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.

-Mark Donahue

If he wasn't happy with 1200+ hp, I'm not setting for 500.

I just can't wait until the kit is ready for my 81. I think the best part of this upgrade from what Tim and Lagavulin have talked about, the car feels stock unless you pull the cork. Daily driving is not compromised or the creature comforts of the 928.

bcdavis

Trust me, too much is perfect.

What you want, in a car, or a bike, is enough horsepower that *you* have to be the one to
control the acceleration, and limit the throttle application. So you can deliver exactly the
amount of power you want. Too much throttle, and you smoke the tires... If you have fat
rubber, and you can still smoke the tires at any time, you have enough power...

Lagavulin

Rufus, you too would become a believer if you ever experience a 0 to 60 mph blast as it is absolutely amazing! And I don't need to tell you that 0 to 60 is very useful on the street.

Let's say you're in traffic on the highway and an opportunistic lane change presents itself, double clutch it down and you're there virtually instantaneously.

You can drive the car such that you're not even aware of the boost if one is so inclined, and it'll drive just like a stock S4 with a little bit more torque. My dyno chart shows an additional 20 ft lbs right off idle.

You can be traveling at 30 mph and just nail it in 2nd, and you're catapulted to 55 in virtually an instant. If the traffic is clear and you want to have some fun, double clutch it to 1st and let it go. I rarely do that though as I have traction problems throughout 2nd gear as it is.

Believe it or not, the car is so much more driveable, and as a result, offers plenty of driving options for any given situation. You will never ever return to a stock 928 after experiencing one with boost. This is how the car should have come from the factory.