By MoToR on 01/23/11 on Y!...

Because of the difficulty in swapping production for manufactures Nascar decided to hold of the fuel injection program this year and implement it next year. I think it is a good idea to allow them to develop a game plan. This will be a learning curve for all teams. I am glad that it won't be another tale of two seasons like last year. The wing change should have been made right from the get go. That is like changing the football in the middle of a season.


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Comment by MoToR® on January 26, 2011 at 3:33am
You bring up some valid points Jake. There would have to be some onboard control with mass air and other sensors for temp adjustments. The thing that I wonder is will there be sensors in the exhaust. The computer adjusts according to air in and unburned gas out. This will allow teams to also have a set up that will allow them to drop cylinders to save gas. whether that will be legal is yet to be seen, don't think teams won't program them to do that. One little discreet button somewhere to change it to run as a 4 cylinder under caution and boom you win the race with gas. any way it goes the wiring under the hood just got a whole lot more complicated. which can leave teams with mysterious bugs on race day. especially on a rainy day when moister is in the air.

All of this is speculation that they go to a multiport system. They could very well just go to an injected throttle body. This would have little effect on restrictor plates being that it would still be a form of carburation with out an actual carburetor. If that were the case than it wouldn't be such a big deal for manufacturing of the newer engines. Any way it goes they are Bringing the new cot back to sort of a form of stock cars. After all when was the last carbureted car made? Next over head cams?

As far as the spark goes, if it is a MPFI than I would say most definitely they go to a block. Why update fuel supply if you don't update energy to fire. The biggest question I have is this: What comes of the new fuel pump they use now? This type of fuel pump will not work for fuel injection. They will have to return to an electric style pump to maintain proper pressure for injectors or they WILL NOT FIRE! There is a lot that goes into the science of running an fuel injected engine. Nascar will need another year to get it all figured out. It is much better that they wait and finish the year as they start it. It takes away from the sport when the rules change midway.
Comment by Çhainsaw∞ on January 25, 2011 at 11:07am
Some what agree here but also I say inspections should be more strict say on the top ten.. as in checking body and dimentions before race and underhood after race and inspect just top ten or so... letting some of the smaller teams have a more run what you brung to compete but bust'm if they break into the top 10... better competion also little lee way for the smaller teams too.... just my thoughts
Comment by JakeSunrise™ on January 25, 2011 at 1:18am
I saw this post briefly on Y! before it was buried under five pages of league spam and thought it is totally worth talking about. I have a take or two on this subject. First, i admittedly don't know much about push rod engines. So, how much exactly would change on the engines exactly? Cause i gotta tell ya, my 94 ranger, has a lot going on with the fuel injection. Would you still run the timing on the plugs through a distributor? Or would you switch it to an ignition coil? What about a mass airflow sensor? I though the precision of fuel injection required the close monitoring of the air and spark for the amount of fuel that is being sprayed into the engine. So overall i guess i'm asking, how low tech CAN you make an engine with fuel injection? Are we seeing what could the the birth of onboard control modules in the COT?
Could this also mean the end of restrictor plate racing? Instead of altering the size of the restrictor plate, they could have, say, 550cc, 750cc and 1000cc races. If the teams are allowed the freedom to choose the size and application of their own injectors, it could reopen what i feel is a dead part of the competition in Nascar, being teams' tuning knowledge would be able to compete with the money behind the larger teams. So many of the usual suspects in Nascar are parts of the huge mega teams, it would be cool to see some of the smaller teams tune their way into the chase. Instead of the huge teams just dumping money on track week in and week out, burying the smaller teams. 800 bux can get you a set of 8 injectors, but having someone who is able to tune the engine they're using to max power and max efficiency would be priceless.
I know that Nascar is afraid of all the cheating that will happen if the teams are allowed rudimentary computers in the cars that count air and fuel. But i say screw it. Who cares what they're pushing under the hood. Why worry about tearing down an engine and measuring to hundredths of and inch and busting dudes like Carl Long for having flabby cylinders. Let them have whatever the hell they want under the hood. Pre-race inspection should consist of a dyno at wide open throttle to test the car for max horsepower to make sure they're within prescribed limits per race. And a visual inspection to make sure there are no bolt-on power plants. After the race, datalog the engine to make sure they didn't cheat throughout the race. If they do cheat, bust 'em, no points. I doubt many owners would want their teams cheating if they didn't get owners points.

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