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http://www.autozone.com/az/cds/en_us/0900823d/80/1b/58/a0/0900823d801b58a0/repairInfoPages.htm
SOHC: Single overhead cam DOHC: duel overhead cam it just means if you car is a single can, or twin cam, the SL1 modles are single cam, and the SL2 are duel cam
2.2 OHV (Over Head Valves) & 2.4 DOHC (Duel Over Head Cams) They are not interchangeable
270 horsepower 300 with flowmaster duel exhaust, kn cold air intake, and skunk2 cams.
do u set the timing marks at btdc or tdc on a 2.5 mercury cougar
To adjust the timing take off the timing cover,take off belt and then line up the marks on the timing gear.You will need a special tool to hold the gears if it is a DOHC(duel over head cam)
Single overhead cam have interference with pistons & valves. While in duel overhead cam engines there is interference betwen the pistons & valves & also between the intake & exhaust valves.
It will fit seeing that they are both 1.9 liter motors, however there would need to be several adjustments made since the SL1 has a single overhead cam and the homecomming has a duel overhead cam
ABSOLUTELY!
I'm pretty sure the 1.9 is compatible throughout in all the years as long as you get weather is is a single overhead cam or a duel overhead cam motor. This can be identified by the 7 or the 9 on the eighth digit of the VIN. A junkyard or a rebuilder such as jasper engines could tell you.
The homophone for "duel" is "dual."