drift1ben Posted November 22, 2020 Report Share Posted November 22, 2020 Hi all, Im currently building a RB25det and I have decided to sway towards the Link Ecu to run it so here I am :) I am in the early stages of the build so as of yet I haven't chosen a model of Link but I'm hoping someone can help shed a little light on a query I have. Iv brought a Harmonic damper with integral crank trigger pick up (30-2t) BUT they have delivered a 12 tooth by accident, my question is it more beneficial to have the 30-2 tooth in stead of the 12 tooth? At a guess am I right in thinking the 12 tooth would rely more on the cam sensor being spot on hence the 30-2 being better? Many thanks Ben Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 22, 2020 Report Share Posted November 22, 2020 I assume you mean 36-2? 30-2 isnt common. But yes you are pretty much correct, the main advantage with a missing tooth wheel is the location of the cam pulse is less critical. You also get faster start up as the ecu can sync as soon as it see's the missing tooth (max 1 crank rev). With the 12 evenly spaced teeth then the ecu cant sync until it sees the cam tooth (potentially up to 2 crank revs). The higher tooth count will also give you slightly less timing drift during rapid crank acceleration - although the difference between 12T and 36T is barely noticeable. Note, you can just remove a tooth of the 12T wheel to make it 12-1 also. Quote Link to comment Share on other sites More sharing options...
drift1ben Posted November 22, 2020 Author Report Share Posted November 22, 2020 Hi Adam many thanks for your reply, I couldn’t of asked for a more detailed response. 36-2 is exactly what I meant , I don’t know where I got 30-2 from. I’ll ask the company to swap out to the correct harmonic balancer because I’d rather not remove any teeth and risk the pulley being out of balance. Out of interest, is there a standard type hall sensor that link seem to lean towards? Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 23, 2020 Report Share Posted November 23, 2020 7 hours ago, drift1ben said: Out of interest, is there a standard type hall sensor that link seem to lean towards? Avoid the honeywell GT101DC with missing tooth wheels, but the equivalent cherry/ZF/littelfuse ones are fine. Quote Link to comment Share on other sites More sharing options...
drift1ben Posted November 23, 2020 Author Report Share Posted November 23, 2020 Ahh brilliant thank you for that Adam, I shall bear that in mind when getting to the point of purchasing the sensors. really do appreciate your input matey Quote Link to comment Share on other sites More sharing options...
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