Gnarly 928

Cross "post" from the PacNW. The Professor, also known as Louis Ott just fired up his GT Super-street stroker GT based supercar. He posted that it just cranked then ran without any fuss. For those of you not familar with the Professor's work, he is a 928 improvment pioneer, responsible for some widely use performance enhancments. His personal project, which has been in the works for a few years, has many wonderful custom peices and systems and it should easily be the best street 928 in existance now.
Just some of the highlights of what he's done..Powered by a Stroker, normally aspirated with individual throttlebodies. He's put a 5sp trans cooler out back inside the rear bumper, with ducts for air from his custom rear fender flares. He's cleaned up every system, thoughtfully improving all the electrics and the suspension, added a subtile white (with a very faint blue Pearl tint) paint job and runs HRE wheels over big reds.
It'll be a friggin screamer on track days! My stroker motor with a similar intake puts out 575hp at the rear wheels, so I'd imagine Louis will be right there or perhaps exceeding that, since he now has his own dyno for unlimited tweeking, right at home!
Congrads to Louis "the Professor" Ott on finally completing the project...I know from experience that it sometimes seems like you'll never ever finish everything...I also know exactly how it feels when you first 'blip the throttle" on one of these monster motors...
Don Hanson

slate blue

Don thanks for posting, hopefully Louie will also post, this stuff is fasinating what type of lift and duration have you got on the cams to get 575 rwhp?

My 2 valve cams for my 6.0 liter are 251 duration intake and 240 exhaust with 0.550 and 0.505 as the lifts.

Cheers Greg

heinrich

I think you guys are going to have fun drag racing up there in the twisty roads by the Gorge Don ..... slap the plates back onto your beast and let's get out the cold beers and chips and lawn chairs along the hilly roads for a hill climb

NickT

575 at the wheels... That is amazing... Details?

Bill Ball

Don:

Good to hear from you and that Louis has it up and running. Heinrich or anybody up there - get some pics of the finished monster and show us some of the custom features. My visit to Louis' shop has me imagining what the car is like.

H2

The professor is a genius...and he DOES NOT own a DeLorean! He knows a good car when he sees one and (successfully) sets about scientifically making it better.

Havey

Louie928

Hi Don,
Thanks for the info post on the project progress. It was quite a surprise to me that the engine actually started and ran so nicely. This is with an aftermarket ECU (DTA P8 Pro, www.dtafast.co.uk). I'd spent enough time setting it up that I should have been close, but still a nice outcome. There is a lot of tuning to be done yet, but just to have it idle and to be able to blip the throttle and have it bark for a few seconds is satisfying at this point. I almost couldn't believe it was running it was so smooth and quiet. The engine itself makes almost no mechanical noise. There is an interesting sound from the intakes that I think is the sound of the valves closing. It's kind of a hollow "poketa, poketa, poketa" sound at idle. The initial idle was about 650. Some mixture tweaking and a few more degrees of advance smoothed it out even more and raised idle to about 700. I may leave it there, but also need to get the idle speed controller working. Experience will tell where it ends up.

The cams are Devek B1. The lift and duration is more than GT cams and determined by Marc T., so I'd better not say more than that. They work very well and increase torque in the upper RPMs on the stroker motors nicely. I think they are ideal with the individual throttle body intake on the strokers. Don's motor made between about 440 and 480 lb ft torque from 4000 to 7000 rpm. The torque wasn't falling off much at 7000 either. Torque was flat at 400 lb ft below 3800. I designed the ITB intake expressly to reduce the torque at the low end where the strokers produce so much (tranny breaking) and to extend the torque above 4000 into the upper rpms and it seems to work for that. The added benefit of the ITB, is a nicer idle with the big cams than is achievable with the S4 manifold. It's satisfying for me to see theory work in practice. Marc Thomas built the lower end and did the head work with 968 valves and mild port cleanup. This is to be a street motor and not race engine like Don's. C/R is around 11:1. I installed the cams and put on all the exterior stuff like water pump/TB, etc. There are some pics and details on my web site http://www.performance928.com/cgi-bi...name=engineQYN

Darien

Louie,

I forgot what the engine looked like...simply a work of art

Bill Ball

Oh, those are great pics. Thanks, Louie. Can't wait to see it bombing down the road.

Rick Carter

Louie,
Almost beyond words, congratulations!!

928autobahndreamer

What more is there to say?

Shane

We were down there last weekend, and seeing Louies' car in person is awe inspiring!!

The pictures don't do the paint job justice, it is Psychadelic!!

H2

Louie's engine is Beautiful!!!! Wow!! What an artistic mechanical whiz.

H2

Abby Normal

That is some incredible work! Talk about ZO6 hunting....

What does a fuel management conversion like that run for parts and install? And how would it work on a 86.5?

bcdavis

That's one hell of a cross-brace!