Note: this is a DIY version of our GTT Adjustable Vernier Cam Sprocket V2 and does not include the cam sprocket (only shown for illustration purpose). And you will require basic machine shop facilities to machine your own standard cam sprocket.
You will receive: GTT Adjustable Vernier plate & Bolts.
Bore out the centre of your cam sprocket to suit the adjuster plate. (there will still be a small “woodruff” cut-out visible on the sprocket)
the 4 x equi-spaced m5 threaded holes in the cam sprocket must be made ensuring that the centre of the adjuster plates “position hole” with the centre Cam sprocket “woodruff” marker are aligned.
Having spent considerable time checking & testing cams one thing we have found is that the car manufacturers timing can be out by up to 3 degrees (crank angle) also as the cam chain wears it stretches and retards the cam timing.
To combat this, our GTT adjustment plate allows simple, easily accessible adjustment of the timing. Either to the manufacturers spec (using a drop-clock and degree disc) or with rolling-road power runs to optimise power output). Why settle for nearly right when you can have provision for absolutely right!
New Version 2 with wider adjustment range.
Fits: all Gen 1 petrol Models