Well, I had a hunch that the difference in performance between KRM and KGV was more than just
'character'. Fortunately, Tony had given them both a drive and confirmed a dramatic difference between the two - 'Needs some work' I think were his words. Today I believe I may have found an answer. Low torque at low revs
AND no
'kick' at 3,500 rpm both seemed IMRC related to me. So I had a little poke around, I wasn't even sure if the secondaries were wired in fact.
Well, an initial look inside the IMRC itself seemed to show it had not been opened and therefore I will be looking to check and properly heatsink the transistor at some point. However, a simple test of applying power to the motor showed something further on was jammed. Also, when trying to apply 12V to the motor, I found that I had to go a long way to get an earth. IMRC case ? No. Mounting bolts ? No. Engine block - NO ! I had to go right back to the battery terminals - further investigation required.
So I decided to have a look under the throttle body and around the IMRC linkage. Having gained some access I could immediately see something odd with the linkage. Look carefully at each picture before moving on to the next - a keen eye may spot it on the first pic. If you can't see it on the last pic, an appointment at Specsavers is recommended.
Now this is good - not only is the rear bush broken and the link arm dropped out,
but the link arm is jammed under the rear secondary actuator that attaches to the cable
and the rear actuator is being held in an intermediate position. Therefore both are suffering from 'Grand Old Duke of York syndrome', neither open nor closed and not even the same as each other in this case...
Now where the heck did I put those spare plastic bushes ?