EP-91-Ross Posted April 3, 2018 Share Posted April 3, 2018 I have a 5efte not forged with a tdo4 running 5psi what can the standard internals run at it's a 5efe bottom and a 4efte top Quote Link to post Share on other sites
Gainzy Posted April 3, 2018 Share Posted April 3, 2018 I'd move that fuel pressure regulator away from the king lead you'd be better off going to have progressive dyno runs it should run a smooth 1bar boost Quote Link to post Share on other sites
gorganl2000 Posted April 19, 2018 Share Posted April 19, 2018 5efe bottom end?....have you ever checked to see which rods are in there?...if it's the thinner 5efe rods, then back in the day persons have reportedly ran a maximum of 10/12psi....some persons have reportedly found the thicker 5efhe rods in some 5efe engines, but all that is just what i've read over the years i can for sure say that the thicker 5efhe rods hold up very well at higher boost levels with a decent tune. Quote Link to post Share on other sites
Clinternational Posted April 20, 2018 Share Posted April 20, 2018 True. first gen 5efe have really thin rods. Second Gen II has a little thicker rods. And the best option is 5EFHE rods they can take +- 360 bhp But with the stock second gen 5efe you can run safely arround the 250 bhp if the ecu is well mapped.. I've seen fully forged engine blown up when the engine were cold. too much throttle haha. It's just a matter on how you drive it and take care of it... http://i12.photobucket.com/albums/a206/sleepyrz/Conrod-Comparison-side-face.jpg Quote Link to post Share on other sites
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