Spanish new-car sales plunge 30.8 percent in June MADRID (Thomson Financial) -- Sales of new cars plunged 30.8 percent in Spain in June compared with the same month last year after suffering an annual fall of 24.3 percent in May, the Spanish automobile manufacturers' association reported Tuesday. Sales came to 114,958 units last month. New-car sales were down 17.6 percent at 702,365 in the first half of the year compared with the same ...
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KEITH CRAIN The only thing permanent is change For as long as most of us can remember, the U.S. automobile business has had cycles. Whenever there was a down cycle, you knew you had to hang in there, and before long, things would come back to normal. And then you would see the cycle head upward again. It's not going to be that simple this timeKeith Crain is publisher and editorial director of Automotive News. ...
The writing on the wall is getting visible ? ! Or better understood !
Grooved Forever !!!
God help those ............ who ............ ? Realize what is comming !
I'm currently rebuilding two engines. #1, AMC (Jeep) I-6, ohv, 2 valve, significant squish #2, Ford Zetec I-4, dohc, 4 valve, minimal squish Along with those obvious differences I notice significant differences in bore/stroke ratios and con rod/stroke ratios. #1, B/S = 1.12/1, R/S = 1.8/1 #2, B/S = .96/1, R/S = 1.55/1 Reading all that is here leads me to believe that engine #1 will benefit more from grooving than engine #2. However, some further thoughts- From a theoretical point of view, I think grooving would make a greater difference in an engine with a smaller R/S ratio, because of the more rapid piston movement right before and after TDC. Theoretical engine benefit advantage: engine #2. But I would also think that grooving would make more difference with a higher B/S ratio, because of the longer flame distance to stroke ratio. Theoretical benefit advantage: engine #1. I'm not sure where to go with these thoughts, but I think they do open up areas of consideration for evaluating the success of grooving engines in the future. Anybody have thoughts on this?
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Re:grooves re: bore/stroke, rod/stroke ratios
Date: 2008/11/06 04:26
By: trevor
Status:
Karma: 1
Yes I have two thoughts....
1. What about the thousands of heads already grooved?
2. To much thinking and not enough grooving going on.....you are not blazing any trails just following the masses...
TH
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