Engine rebuild update
#110
Burning Brakes
Thread Starter
Originally Posted by SoCal Mike
David, what kind of dyno are they tuning on?
#111
Rennlist Lifetime Member
The Dyno Jet has a brake. What they do is run it up and slam the dyno brake on and try to load the cells. It is not a wise idea since it will overheat the brake. The brake was only designed to slow the dyno, not load up.
#112
Burning Brakes
Thread Starter
Originally Posted by PorschePhD
The Dyno Jet has a brake. What they do is run it up and slam the dyno brake on and try to load the cells. It is not a wise idea since it will overheat the brake. The brake was only designed to slow the dyno, not load up.
#113
Burning Brakes
Thread Starter
We did some more tuning today. It's still at 0.7 bar but it made 416 rwhp and 357 ft-lb torque. I think 500+rwhp at 1 bar may be within reach . I'm going to take it home tomorrow and get some miles on it before I turn the boost up and put it back on the dyno.
#118
Burning Brakes
Thread Starter
I guess I'll get back on my own thread for the update .
After changing the fuel system from running in series to running in parallel with fuel dampers on each rail and not getting any improvement in my lean side/rich side problem I looked at cam timing.
Sure enough, the right bank which showed to be too rich by the plugs, had the cam too retarded. I reset the cam timing and now both side's plugs show to be lean, but the lambda sensor shows rich. At least this problem is sorted out and I can take it back to the tuner for final tuning. It's a little too early to tell, but it seems peppier on bottom.
After changing the fuel system from running in series to running in parallel with fuel dampers on each rail and not getting any improvement in my lean side/rich side problem I looked at cam timing.
Sure enough, the right bank which showed to be too rich by the plugs, had the cam too retarded. I reset the cam timing and now both side's plugs show to be lean, but the lambda sensor shows rich. At least this problem is sorted out and I can take it back to the tuner for final tuning. It's a little too early to tell, but it seems peppier on bottom.