What is inlet or exhaust in land rover discovery -2000
The intake valves(routed to the intake manifold/injectors/throttle body) usually have a tighter clearance specification than the exhaust valves(ruted to the exhaust manifolds/catalytic converters,etc).This is due to the exhaust valves running at a higher tempurature than the intake valves.The only engine I have had long enough to require adjustment of the valves is my 77 Plymouth Volare'(it has a Slant Six 225 with mechanical lifters).My father put about 95,000 miles on it without adjusting the valves.(supposed to be done about every 20,000 miles).My Barracuda was getting to the point of weekly repair,so I decided it was time for a complete teardown and a nut and bolt restoration(after 18 years,I'm finally painting it!)The Volare was cosmetically rough,but just needed some tune up stuff to get it running for daily use.I rebuilt the carb,and used the 5 gas analylizer in the shop to tune it to perfection(it took 4 hours to rebuild,I spent 5 hours adjusting it).It started and ran better,but I knew there was room for improvement.My next task on the list was to adjust the valves,mostly becuase of the noise(it sounded like an old Teletype machine!).I set the clearance at .010" on the intake,and .020" exhaust per the factory manual(my father was smart to buy the mechanical AND electrical manuals as part of the new car purchase deal!)The valve adjustment made such a positive difference that I had to adjust the carb again.The first trip after transferring the tags was to my parent's house.My father couldn't believe how quiet and smooth it ran! So,good for you for doing this maintainance.Engines require so little routine adjustment that it sometimes gets forgotten anymore.
Sep 01, 2012 |
2000 Land Rover Discovery