General Chat
Q:
Hi folks,
MOST of the information I have read on engines talks about setting the red line in reference to the valve train and at what RPM it begins to float and you get pistons hitting valves. Anybody ever wonder what an RPM limit of an enging would be if the valve train was not in the equation?
Say, for example, you could hook up an engine, without heads, to a machine that would spin it. The engine would be heated and lubed. Anyone with a guess at what RPM things would start to fly apart?
Just wondering?
John
77280Z (Spooky), 83ZXT (Garage Queen), 86ZXT (Bulldog).
Proud owner of 10/03 Z car of the month.
A:
Crankshaft length on the L-Engine and lack of total counterweighting make for a part that likes to break regularly if spun over 9000rpms.
Now if it was correctly counterweighted, who knows? The L-Engine Four Cylinders wer spun over 10,000 rpms in the LZ configuration.
Current F-1 Engine technology has them spinning avoe 20Krpm.
People Are Idiots, Just look around here and you will see!
Tony D: "Knowledgeable but Caustic"... rationull
My brother from another mother calls himself "Willie D"
A:
It depends on the engine, like tony says the rotating assembly has it's limits on fast they can spin before failure. Like an old ford 2.8 I6 isnt going to hold up nearly as well as an L28.
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Justin T
72 240Z L28, 5-speed
77 280Z 5-speed (t-boned 8-25-04)
80 280ZX automatic(retired)
A:
Thanks folks.
John
77280Z (Spooky), 83ZXT (Garage Queen), 86ZXT (Bulldog).
Proud owner of 10/03 Z car of the month.