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Next season all the teams will have to adjust to a new supplier of fuel for their powerplants. Seems they may have to adjust this season as well.........
Sources at Talladega Superspeedway told teamfordracing.com that the fuel Unocal has provided since the announcement that they were leaving the sport might have some consistency problems. This, according to a leading engine builder in the sport, is leading to some interesting finds during post-race engine tear down. “We’ve even questioned here lately with Unocal moving out how the fuel … We’ve seen some funny things on our parts after the race and for some of us fuel quality is changing on us,” said the engine builder. “So yeah, it’s a big issue and we’ve been talking about it quite a bit.” Fuel is a vital part of the Winston Cup engine builder equation as the additive packages are what help hold a motor together during a race. Fuel chemistry changes can lead to premature part failure. NASCAR hasn’t let the teams know what will be pumping in 2003, which is making the engine builders nervous. Variances with the chemistry and consistency of blend will be needed soon as it can take six to nine months to match the engine package to the fuel package. One big question that’s not been answered is whether the fuel will be of a leaded blend, or no-lead. There is concern that if the sanctioning body goes the no-lead route that engine failure could rise dramatically due to leads lubricity qualities, or the capacity for reducing friction. Unocal, along with NASCAR and the teams, tried a no-lead blend several years ago in the Busch Grand National Series. Those experiments ended after the exhaust valves beat the seats out of the head. Unocal, to help solve the problem, suggested that the teams move to titanium vales. That suggestion angered the involved engine builders as they’d been using titanium for several years, and were surprised that Unocal engineers seemingly didn’t know what was in a motor for which they were blending fuel
Sources at Talladega Superspeedway told teamfordracing.com that the fuel Unocal has provided since the announcement that they were leaving the sport might have some consistency problems. This, according to a leading engine builder in the sport, is leading to some interesting finds during post-race engine tear down. “We’ve even questioned here lately with Unocal moving out how the fuel … We’ve seen some funny things on our parts after the race and for some of us fuel quality is changing on us,” said the engine builder. “So yeah, it’s a big issue and we’ve been talking about it quite a bit.” Fuel is a vital part of the Winston Cup engine builder equation as the additive packages are what help hold a motor together during a race. Fuel chemistry changes can lead to premature part failure. NASCAR hasn’t let the teams know what will be pumping in 2003, which is making the engine builders nervous. Variances with the chemistry and consistency of blend will be needed soon as it can take six to nine months to match the engine package to the fuel package. One big question that’s not been answered is whether the fuel will be of a leaded blend, or no-lead. There is concern that if the sanctioning body goes the no-lead route that engine failure could rise dramatically due to leads lubricity qualities, or the capacity for reducing friction. Unocal, along with NASCAR and the teams, tried a no-lead blend several years ago in the Busch Grand National Series. Those experiments ended after the exhaust valves beat the seats out of the head. Unocal, to help solve the problem, suggested that the teams move to titanium vales. That suggestion angered the involved engine builders as they’d been using titanium for several years, and were surprised that Unocal engineers seemingly didn’t know what was in a motor for which they were blending fuel