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, Fri, 21 May 2004 21:44:19
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Kevin, how about option #4. I have an unusual set-up, so bear with me. An 86 16VT coupled with 82 CIS fuel delivery. The catch is to modify the 8V injectors to work with the 16V intake manifold. I did the conversion mostly because the 8V engine blew up (failed interior oil feed) and I wanted to have some fun with a 16V engine, but time was short to do a complete 16V system upgrade in the 82 chassis, so I compromised with the CIS adaptation. The results have been better than expected.
OK, prior to the 8V engine blowing up, I mainly had an all stock set-up, but with an intercooler and a modified advance/boost actuator. My goal was to control the knock in that engine, which because of the hot conditions where I live, boost performance often suffered. I just wanted stock boost under most if not all conditions. In addition to the IC, modifying the boost actuator was one step, as recommended on this site.
I did the mod by removing that bolt stop on the actuator and replacing it with an adjustable nut and bolt, filed down and shaped so as to be able to adjust that gap. The end result was that it worked. I was able to increase retard at full boost, allowing the wastegate and APC pressure sensor to do the chore of lowering boost when it reached that upper limit (8 psi), not the knock sensor.
So when I did the 16V conversion, I also transferred the modified actuator, assuming I'd also have a problem with knock based on my previous experience. (I was wrong on the knock. This engine runs surprisingly knock free) So with that actuator in place, plus advancing the timing at the distributor by 2 degrees max, I've got very responsive initial acceleration, a slight lag at that intermediate point, and sharp boost after 2500 rpms up to it's set limit (10 psi). Based on that description, do you think that if I delayed the retard at that 1 - 3 psi mid-point, I would discover an even more smooth boost curve, i.e. less lag? Dawes Device time? A simple restriction in the vac line connected to the actuator? TIA
posted by 205.188.11...
, Fri, 21 May 2004 21:44:19, Sun, 23 May 2004 19:47:41
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