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[biggles]

Here is the camchain tensioner mod, developed by Peter McKewan of www.Raceline.co.uk

From my understanding the modded versions stops the tensioner from getting damaged during back-lashing at high revs (above 7400 rpm or so), particularly on the longer run of chain on the 2.3.  The original Ford tensioner, gets damaged by the ratchet stop mechanism getting smacked by the guide under backlash conditions (lifting off throttle quickly).  This can break one or two teeth on the tensioner ratchet mechanism.  The modded version has the ratchet removed and replaced by a suitably machined bolt and lock-nut that acts as a permanent stop.  The hydraulic tensioning component works as before, its just the stop that is upgraded.


Perfectly functional Ford tensioner


Old & New tensioner


New Tensioner installed


This shows the required fixed clearance