Many older systems were non sequential but were fired in pairs. So, are you saying just plug em up any where they will reach with no or very little difference.maybe you wanna rethink your answer. I agree reversed polarity will not affect pulse width.
If injector timing has no effect on combustion then how would it have any affect on the way the engine runs. If it has no effect on how the eng runs then why not just open all 4 at the same time? All injectors I,m fiamilar with are spring closed and electrically opened.
have never tried this but...
I am not an engineer and may have no buisness here. I come here to learn not teach.As hard has as I try I cannot see where jsteve is coming from.The original post was for modern gas engines.Older carburated engines with poorly enginered, adjusted or malfunctioning vents were sensitive too dirty...
I run 2 .060 restrictors scewed into the rear cam galleys with a 4 quart pan. oil pump is stock. z-28s used stock pump with a stiffer relief spring.This is now the same spring supplied in all gm small block replacement pumps I believe.You may want to check with comp cams on this but i think the...
Pat you are right about friends being more important than mechanical problems.Your also rt about the dry sump sys.The thing I can,t get past is the angle of the eng. The design requires the bulk of the oil to drain at the rear of the lifter valley so it misses the crank.One thing you might wanna...
I have a s/b chevy with a solid flat lifter cam.This cam is semetrical with .580 lift and 275 deg dur @.050 seat dur is 320. this is with 1.5 rocker ratio.I also have 8 1.6 ratio rockers I was thinking of trying.the ratio change won,t change the opening or closing points but should give a small...
o2 sensors are chemical generators capable of about 1.2vts. they gen voltage by passing o2 when rich mixtures inside exhaust cause an inbalance from outside the exhaust,for example a lean mixture would cause no o2 to flow so voltage is low.the slow change you see with a scan tool is a funtion of...
a little knowledge is indeed a dangerous thing . take everything I say with a grain of salt. static c/r of 13/1 and higher are doable with wedge type cyl heads boosted on alchol. I suspect when you do the math after carefully mesureing the piston to deck,gasket and combustion chamber volume if...
I don,t have any dog in this hunt just a few observations.point igns do a decent job of firing fat mixtures across short gaps at low rpms. elec igns have a way of not just outright failing but coming and going.us elite types sometimes have trouble seeing the woods for the trees
as pat pointed out tuning will be more trial and error than formulas.when you bring air (which is compressable) into the sys fuel flow calculations get real fuzzy.the carb i use has .028 high speed bleed in all 4 locations and all 8 emulsion bleeds are also .028. this is a square bore with 1.687...
I suspect the placement of these elmusion bleeds would depend on the mounting of the carb(s)cross or front to rear,type of racing, drag oval or road .
as usual I could be and probably am wrong.
I would also like to see opinions on this.
been running avi gas a long time.very little if any improvement running racing gas. avigas is less dense so diff fuel ratio may be required if no eng management sys is used.also worth mentioning is the cleanig avigas does to the fuel system if it,s dirty. on carburated systems this will amount...
