Garth Libre
Well-Known Member
Is the four cylinder Ranger from 2010 an interference or non interference engine? I ask because I'm not sure of the history and I'd like to replace the timing belt or chain before bad things happen.
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It took me the better part of a day to replace the chain and tensioner on my 1971 Dodge Slant Six. It ran noticeably better. I also did the timing belt on my 4 cylinder Mercury Lynx 1984 and it ran noticeably better. I did the timing belt on my 1993 Miata and it became a new car in terms of power. It seems even small differences in cam timing can make a noticeable difference in performance.it's a chain.
actually 2 chains, a long one for the cams and a short one for the oil pump.
it's a bit of a process to replace the chain(s). there are no keys, you need to replace the special diamond coated washers that lock
the gears in place.
front of engine comes off, top comes off too then the cams get held in place with a locking bar, crank against a stop bolt.
THE INSTANT YOU LOOSEN THE CRANK BOLT THE ENGINE NEEDS RE-TIMED.
don't remember if it's interference, I'll have to check. valve lift is not much on DOHC flat-tappet engines. cam followers are basically a flat tappet.
for what it's worth, my 2005 2.3 had 360,000+ miles on the original parts when pulled out for bad rings & oil consumption.
EDIT
valve lift 0.324" intake, 0.307 exhaust.