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Re: 1.3EFI-->>1.6EFI swap
<font color=red>>>you will need a 1.6 modified motor mount too.....</font color=red>
Oh yeah, I forgot about that.
<font color=red>>>A friend of mine just built a 1.6 8 Valve, and used a 1.6 8 Valve head...he
>>milled the head, decked the block ...</font color=red>
That's what I'm planning too, except I don't want to use carburator[s] at all, I can troubleshoot EFI fairly easily, while any carb problem leaves me in the dark. Go figure [img]/wwwthreads_images/icons/smile.gif[/img]
<font color=red>>>To make up for the milled head and decked block he used an adjustable cam
Where did you get that sprocket - or did you make it yourself???
<font color=red>>>you can use the 1.6 head with your 1.3 EFI for even more power</font color=red>
What's exactly the difference?? Different shape of combustion chamber?? Bigger ports?? Bigger valves?? Anything else??
<font color=red>>>I dunno what the fuel flow rate of the 1.3 EFI is but you should
>>investigate it to make sure that you get the full amount of power that you are due.
>>If the injector is too small you can always increase the size of the injector
>>and/or increase the fuel pressure as long as you don't start hitting the injectors duty cycle.</font color=red>
That is of my concern too. I suppose the 1.3 injector is smaller than 1.6. I don't know what the flow rate of either one is - do you?? Would the 1.6 injactor fit the 1.3TB I wonder....The c'puter can accomodate a sligt increase of the injector size, but not much before it falls off of the pre-programming operating tables. Hmmm...I guess a 'live' experiment would prove me right (or wrong I'm afraid).
FYI, playing with the fuel pressure is another thing worth trying on any EFI engine regardles of other modifications. I once came across a test results done on a new F350. They've done different mods to it and put it on the dyno each time to check power/torque in-[de]crease, fuel consumption, etc. The mods included intake (K&N filter, thermo-barriers, ports, etc.), exhaust, cams, and also the fuel delivery pressure. First of all the actual pressure was too high by a few PSI....they put an adjustable regulator in and tested the truck again with different pressures. The best dyno results came from the pressure set slightly below (if I remember correctly) OEM value.....most of us don't have a dyno, but a careful observations and measurements can be home-made as well as anything else I suppose.