joel_ep91 Posted December 12, 2010 Share Posted December 12, 2010 hey guys any body know what cc's 4efe pistons are need to know so i can work some shit out.or if somebody can tell me how to work it out i have a ton of the pistons beside me ?thanks in advancejoel Quote Link to post Share on other sites
joel_ep91 Posted December 12, 2010 Author Share Posted December 12, 2010 bump bump Quote Link to post Share on other sites
Dan507 Posted December 12, 2010 Share Posted December 12, 2010 Sure you want to work it out, its some technical shizzhttp://en.wikipedia.org/wiki/Volume Quote Link to post Share on other sites
nastyrash 2003 Posted December 12, 2010 Share Posted December 12, 2010 y fella wats u thinking. you working on compression ration. Quote Link to post Share on other sites
joel_ep91 Posted December 12, 2010 Author Share Posted December 12, 2010 want to work out what i should get taken off my head want it to be pretty high compression but still safe will be useing a trd head gasket and arp head bolts Quote Link to post Share on other sites
nastyrash 2003 Posted December 12, 2010 Share Posted December 12, 2010 now we are talking fella. look up compresion ratio and how to mesure. normaly i would remove the head and place a plastic perspex flat lid over the combustion chamber with a small hole and a measuring serindg placed into the hole, now fill the space with hair gel runnier the better. now get a 1ltr tub of water and drop a N/A piston just piston into the tub and measrue the water displaced from the 1ltr tub, now do the same with the turbo flat top piston. the difference is the volume in the dome. now work out your compression ration use the volume of the cylinder against the volume of the combustion chamber minus the dome volume. also watch any squish areas in the combustion chamber. the closer u get these the better quench and scavagin you will get on cruise which will save fuel, cool cylinders and give power gains. remember to leave the spark plug in. Quote Link to post Share on other sites
lukEp Posted December 12, 2010 Share Posted December 12, 2010 I was wondering how long it would take for you to smell this tech question out Quote Link to post Share on other sites
joel_ep91 Posted December 12, 2010 Author Share Posted December 12, 2010 im friggin lost lol i will try reading this again when im awake cheers for the reply nastyrash Quote Link to post Share on other sites
nastyrash 2003 Posted December 12, 2010 Share Posted December 12, 2010 sorry bro but i live for proper enginering as you know. and lov to see peolpe try these things proper engine blue printing is the key to any good base for engine proformance. Quote Link to post Share on other sites
Russleh Posted December 12, 2010 Share Posted December 12, 2010 i love proper technical shiz like that even tho i dont get it yet lol. had a look through a demon tweeks catalogue last night tho and noticed they do alot of books of engine tuning. like a whole book on cams etc Quote Link to post Share on other sites
nastyrash 2003 Posted December 13, 2010 Share Posted December 13, 2010 i love proper technical shiz like that even tho i dont get it yet lol. had a look through a demon tweeks catalogue last night tho and noticed they do alot of books of engine tuning. like a whole book on cams etcyep invest in thm thy are wat you lads need. because thy hold all your math equatoins you need to do engines. Quote Link to post Share on other sites
nastyrash 2003 Posted December 13, 2010 Share Posted December 13, 2010 you can also work out the answer from the difference in comp ration bettween the 4efe and 4efte.The head gaskets are the same thickness 1.4mm so the .7mm trd head gasket should make a nice difference to the comp ratio. Quote Link to post Share on other sites
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