Posted by Aaron Ford on March 13, 2008 at 09:57:28 from (71.182.50.62):
In Reply to: 12 valves? posted by Dan-IA on March 13, 2008 at 07:21:36:
Nissan used to run the Z24 (?-90) engine until the early nineties. It had 8 valves, but also eight spark plugs. One fired on ignition and the other fired on the deadstroke. Actually produced more power. Not sure why or how, but it was a clean running engine. The engine you speak of is the newer KA24-E (91-97?). It has as said before 2 intake valves and one exhaust. The trucks were tuned to produce peak torque at 3500 and are quite powerful unless saddled with heavy options (4x4, extended cab, auto, a/c, p/s, etc...). I have timeslips from mine running a 16.1 second quarter when it was new. Not sure what it would do now. It will still get up and go, but running a truck with no auto, a/c, and p/s is getting kinda old. Paid 7900 in 1995 and still driving it to work every day.
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