I would try to talk you out of the pertronics.
IMO you are better off (and more accurate too) going with a crane XR700.
Hi Rootes Racer, Please would you tell me why you would talk someone out of the petronics and point me in the right direction for info on the craneXR700(not trying to be controversial, just want practical advice)
Thanks
You being in the UK, I would steer you toward a Lumenition as its a good local equivalent.
I used to recommend pertronics as anything is bound to be ebter than points.
Years ago I installed pertronics for a fuel injection setup, and during tuning we were seeing big differences in EGTs on the header tubes. After eliminating fuel as the problem, we got out the ole timing light and saw 4 degrees timing difference between #1 and #4 cyls.
We marked timing on a piece of tape on the back side of the timing wheel so we could see timing on #2 and #3 and found them off a couple of degrees in different directions too. This turned out to be typical of other installations
I looked into as well. +/- 2 degrees cylinder to cylinder was what we measured as best case scenarios.
The reason for each cylinder having its own timing is becuase the pertronics target ring has 4 independent magnets in in there, placed during casting of the ring. We know this becuase I witnessed one that cracked and tossed its magnets into the cap.
I dont recommended pertronics anymore becuase I dont believe that this method is viable for accurate ignition, and using individual magnets, placed in a fixture during casting introduces obvious sources of angular error in the final product.
The Crane and Luminition products use a slotted light gate, which can be visually inspected and measured with regard to its angular timing accuracy.
