by Altransit » Tue Feb 09, 2010 10:06 am
Its the 8v DOHC engine, also used in the later Sierras and Scorpios
I had a quick look on the Sierra forum
http://forum.fordsierraclub.co.uk/ but I couldn't find a complete thread on the subject for you

It would seem that the chains last for about 100k, but the problem with them, is the plastic tensioners used

1994 Mk4 SWB 115 Minibus 70ps Di (R.I.P.)
1997 Mk5 SWB 115 Minibus 70ps Di (Gone, but not forgotten!)
2004 Mk6 SWB T280 Medium Roof 85PS 2.0 TDDi - Vantunered (Also gone)
2008 Mk7 SWB T280 Medium Roof 85PS 2.2 TDCi - Also Vantunered