Joshua

Thank you gav

Hello all, I have been looking into F.I converting my L26, I want to keep this engine cause of previous work done to it and want the ease if a F.I system. How difficult is it to convert a e88 head to support a L28 supported efi system i.e. Plenum or a stock L28e intake manifold. Or would it be easier and cost efficient to install a ITB style system. Thanks in advance.

It was purchased just under a week ago and everything was done before i got it. so unsure when and who did it but asked the question in case it could delay or speed up enriching the fuel mix by the damper spring rate, I was hoping that if this was the case i could have the leaner mix for the idle to keep it smooth then rich it up later on for a smooth rpm build towards redline . It has a mechanical fuel pump, and not sure on the advance. I normally drive casually and once in a while give it the beans When I've been playing around the spark plugs were black but replaced them few days ago, hasn't affected how the engine runs. I don't like running it rich or lean cause I know it damages the engine so when I attempted to lean it out I readjusted it back to about the original setting so the idle was smooth at 800-900 rpm, but the top end is still affected. So would the needle be worn or something? allowing excess fuel to slip past? Also when cruising around once in a while the engine stutters almost like its starving (even with the rich mix) but the tacho and rev gauge needles goes haywire when it stutters but only lasts for a couple seconds. Would that with the excessive rich air fuel mix would prevent me from reaching the top end smoothly? and have a good power band with half decent economy? Thanks.

Hi all, I recently got my first Z (1975 260z) and learning how the more vintage style system works. It is running rich at the moment (Very 20L per 100km) and Im wondering if I cant get a proper tune if; 1. SU carburetors are running stock piston spring (Reconditioned) 2.Engine(L26) is running a lumpy cam (Not sure on spec) & High compression (10.5:1) I am tuning using the uni-syn tool trying to lean as much as i can but idle becomes weak below 900-1000 rpm and at a higher 5000 rpm+ and more heavy foot throttle position, operation becomes average and struggles to accelerate. I have read on different spring types like red and green but what difference will this make to the operation? Many thanks.