odonnell

If it's too lean it simply won't start, it will die or the idle will wildly hunt. Just have you laptop next to the motor and add fuel to the idle cells until it's right, it won't hurt the engine. If it it's too rich it, assuming it starts, it will have a low idle and you'll smell it immediately. The key is to know what to change to correct the fuel to where it should be.

968gene

Race, which VEMS? The info I have seen only supports a single knock sensor.
Thanks,

Raceboy

Every VEMS supports up to two knock sensors if specified upon ordering. Version numbers only indicate revisions of boards, they all have same features (or at least are upgradeable if not ordered already before).

Max Energy

Gene,
I am going to rely on MM, he has a base map we are going to start with that is similar to what he used on Henk's car. Fortunately we have a lot of fuel options here in the USA, we are going to use the Sunoco Green E15. In regards to EMS we are going with either the M84 or the M400
Max

968gene

Max, engine looks amazing. Are you using variable cam timing or knock sensing?

Voith

I will go with j&s interceptor for knock sensing, it looks like a great unit and I like the headphones provision. I'll also control variocam with ecu if it turns out it helps anywhere in the rev range.

968gene

Thanks V

Max Energy

Gene,
We are not using Vario cams.
I am finishing the machining on the front snoot to utilize the 60-2 wheel along with the 968 belt tensioners. Then on to either twin or triple disc clutch and Motec.
In regards to the Body the Hood, Nose, Splitter and Front fenders all in Carbon Fiber are getting fitted. Waiting for the CF Roof, Rear quarters and doors.
I will start posting some of the progress. I have my LS3/951 street car and this new race car 968/951 battling for my time.
Max

P.S. Your Motor and Brakes look great, can't wait to see the car

968gene

Thanks Max....I have a way to go!

Max Energy

Gene,
My LS3/951 project

333pg333

That's Gleaming paintwork Max! The racecar sounds like a very $pendy project too. Are all the c/f pieces totally custom...as in you now own the molds? If so, are they along the lines of the stock body or very different?

Assuming you're using MM's split cam system with the billet bracket rather than a more classic dual drive setup at the front of the motor?

The law is you have to do a build thread or Life Ban!! :-)

Thom

I also avoid going richer than 11, but on an 8V I would always add fuel under extreme loads to keep EGT under control. 8V engines using either of the stock camshafts make a nice wide torque band but don't breathe so well up top and EGT has a bad habit of going through the roof when running way above the factory 0.7 bar of boost on pump gas. With that said, I would expect that running 2 bar of boost with a stock-ish effective compression ratio would blow the engine in little time.

When comparing fuel maps there should be some relevance in the difference between the values at low loads and high loads. I expect a 16V map to show a wider differential than an 8V map. This difference can give an idea of the difference of VE between both set ups, relatively talking.

Max Energy

Patrick,
In regards to the 968/951 Carbon Fiber parts I am using the same person that Jim Stevens used for some of his parts. The front fenders, hood and nose was based on the Broadfoot Daytona style wide body we changed the nose openings(looks similar to Tony Garcia's) In regards to the roof skin I shipped a Non-sunroof roof and Kyle Schiemann is making the plugs additionally he is making doors and wide body rear quarter panels in CF for me. I plan to permanently attach the rear quarters. In regards to style and shape, the fenders aren't as smooth looking as my LS3/951. the carbon fiber fender parts look to have a sharper upper edge.
The LS3/951 has 12.5x18(335x30) wheels on the rear and 10.5x18(275x35) wheels on the front.
The 968/951 race car would be able to accommodate 12.5x18 on rear and 11.5-12x18 on front.
I will probably start with 11x18's all the way around and I have another set of 11.5 and 12x18 I will try. I don't want to over tire this car. Unlike your motor and Dukes motor I am targeting 375-400 engine HP with this 3.2 liter NA engine. I will start compiling some build pictures of the race car.
Max

Max Energy

Patrick,
Also regarding the camshafts we are initially starting with hydraulic style (no vario). We may switch to the billet 2 piece cams along with the billet cam girdle.
Max

333pg333

Sounds very impressive Max! Kinda wish you were doing a turbo motor as I've not seen one of these from Michael. But with what I can guess your weight will be and the n/a motor, it's going to be a super responsive beast. Agreed on not over tyre'ing the car. We only run 11.5"s and 295 all round so I would think you can get away without Super massive wheels/tyres on there.

Jim's body parts look great too. Be nice to just do a light sand and clear coat your car with the fresh new c/f.