hazell ep91 sr Posted May 1, 2012 Share Posted May 1, 2012 what should compression results be on a 4efte? been offered an engine with compression of 140,138,140,139.that good or? Quote Link to post Share on other sites
Johnboy GT Posted May 1, 2012 Share Posted May 1, 2012 Thought it was spose to be up at 160... May be wrong though dudr. would wait and see someone who knows for def. John Quote Link to post Share on other sites
AdamB Posted May 1, 2012 Share Posted May 1, 2012 Is it forged?Seems ok to me, they are all equal or there abouts. Would like to see a bit more myself. Quote Link to post Share on other sites
hazell ep91 sr Posted May 1, 2012 Author Share Posted May 1, 2012 yeah i thought it was a bit low, equal but low. no its not forged, standard engine, after an engine to use for my 4efte conversion but finding a good one is proving difficult!need one with good compression that comes ideally with gearbox and all ancillaries Quote Link to post Share on other sites
starletburkie Posted May 1, 2012 Share Posted May 1, 2012 150 psi would be an evenly worn engine, there 175psi stock or there abouts Quote Link to post Share on other sites
hazell ep91 sr Posted May 1, 2012 Author Share Posted May 1, 2012 ok thanks people, wont be getting that engine Quote Link to post Share on other sites
A L 3 X Posted May 1, 2012 Share Posted May 1, 2012 One question, for a turbo engine175psi is fairly high, how come? Quote Link to post Share on other sites
AdamB Posted May 2, 2012 Share Posted May 2, 2012 Wouldn't say thats very high at all. Most modern engines run a lot higher compression ratio, and also a higher bmep.It's the low compression of these engines that allow such tuning without much fuel modifications. Quote Link to post Share on other sites
jackellis19 Posted June 24, 2013 Share Posted June 24, 2013 i done a compression test on mine and it was 100,100,60,100 i kn ow cycliner 2 is low and i think its a cracked ringland but i was wondering why the other 3 cylinders are so low too? could the rings be bad in all 4? would replacing the damaged piston and 4 new rings solve this? Quote Link to post Share on other sites
AdamB Posted June 24, 2013 Share Posted June 24, 2013 i done a compression test on mine and it was 100,100,60,100 i kn ow cycliner 2 is low and i think its a cracked ringland but i was wondering why the other 3 cylinders are so low too? could the rings be bad in all 4? would replacing the damaged piston and 4 new rings solve this? Have you tried a wet test? Drop a teaspoon of oil down each bore, if the reading rises then you have a ring/cylinder problem. If it doesn't it will most likely be a headgasket issue. Quote Link to post Share on other sites
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