[jerryweichers]

O.K. can i weigh in here simpllt because i apparently iniated this thread and have taken some serious flak as a result of my opinions which are admittedly not backed up by any sort of college degree, only practicle experience. first of all let me state that my theory on race car assembly has been labled on this forum as '' overkill'' thankyou for the compliment i would much rather spend a few dollars on ''over kill'' than deliver my customer a product based on cost or cost savings .sorry but i would rather work for free rather than endanger my clients life.the current dissertation in this forum is based on the safety and quality on fasteners in assembling a race capable car. my experiance and training are while not accompanied by an engeneering degree is based on training under two mcclaren crew chiefs , guys with the credentials backed up buy their record in the can am and euouripian interseries, so here goes my opinion , #1 a coarse thread bolt is dangerous if installed in anything that does'nt require it i.e a casting,,, why use fine thread ? they are simply stronger compare a fine thread bolt to a coarse bolt the simple fact that a fine thread is aproximatly 15% thicker or contains more mass/ thickness should be evident by simple examination. my other issue with using coarse bolts on chassis componets is the wear factor first of all their should be no part of a bolt exposing the threads to wear on the componets they hold together .... think about it you put a bolt in your suspension and don't allow for grip length you literaly have your car under load cutting it self apart . why do i insist on grade 8 or better fine thread only other than proper application using coarse ? because in my opinion its worth the effort to keep the driver of a ''race capable car alive at the end of the day 'you can't be on the podium if your dead!