Quote:
Originally Posted by Brian Carlton
I'm not grasping why the maximum torque is only at 2300 rpm with a boost level of 8.5 psi.
Something is not right. There is no reason that this engine can't produce peak torque at 2800 rpm. Randy and others have dyno runs that confirm this.
This engine would have significantly more than 107hp if the torque peak could be shifted to the right.
Are you positive that the cam timing and IP timing are correct? Is the lift on the cam to spec?
Something needs adjustment.
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Its probably mainly due to the VNT and possibly the w115 intake manifold. You may notice that the dyno run where the turbine vanes are held wide open it does move the peak torque to the right. The peak is lower, but it is more to the right. This just illustrates the advantage the VNT has at generating efficient boost over a wider range of rpms. The longer intake runners probably shift the peak torque a little lower too.
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