Posted By: 360view
Safety of 7 cyl wide open throttle, several times ? - 09/04/09 03:10 PM
I am interested in how
Moparts members would vote,
on what the chances would be of destroying a Magnum 360 V8 engine,
by repeatedly doing
wide open throttle accelerations
from 1000 rpm to 4000 rpm
on only 7 cylinders.
The wiring harness plug to the fuel injector electrical socket on the
'off' 8th cylinder would be disconnected
and the wire connector that would normally go to that injector would be plugged into a
'Noid Light' so that the PCM internal computer injector driver would not be harmed.
This would of course leave the 8th cylinder cold.
What are the chances
the cast iron block would distort or crack if
7 cylinder bores were enduring full heat for 30 seconds
and one cylinder sucking in and then exhausting just intake air?
Can a colder head gasket bore take having its neighbors fully hot ?
Since the hot coolant is still circulating through all passages in the engine this should somewhat even temperatures out, but certainly not completely.
Would the unbalanced vibration of the now V7 pulses be enough to cause unusually dangerous crankshaft vibrations?
Certainly there are vehicles with only 7 cylinders operating on the highways every day.
How many mechanics have encountered V8s that have operated for long periods with only 7 cylinders healthy?
Have any Moparts members
operated V8 engines for long periods
with only 7 cylinders firing?
Have any Moparts members
repeatedly taken 7 cylinders of a V8 to wide open throttle?
On a vehicle?
On a shaft Dyno?
The purpose of this is to find the real world
'power balance'
of each of the 8 cylinders.
Moparts members would vote,
on what the chances would be of destroying a Magnum 360 V8 engine,
by repeatedly doing
wide open throttle accelerations
from 1000 rpm to 4000 rpm
on only 7 cylinders.
The wiring harness plug to the fuel injector electrical socket on the
'off' 8th cylinder would be disconnected
and the wire connector that would normally go to that injector would be plugged into a
'Noid Light' so that the PCM internal computer injector driver would not be harmed.
This would of course leave the 8th cylinder cold.
What are the chances
the cast iron block would distort or crack if
7 cylinder bores were enduring full heat for 30 seconds
and one cylinder sucking in and then exhausting just intake air?
Can a colder head gasket bore take having its neighbors fully hot ?
Since the hot coolant is still circulating through all passages in the engine this should somewhat even temperatures out, but certainly not completely.
Would the unbalanced vibration of the now V7 pulses be enough to cause unusually dangerous crankshaft vibrations?
Certainly there are vehicles with only 7 cylinders operating on the highways every day.
How many mechanics have encountered V8s that have operated for long periods with only 7 cylinders healthy?
Have any Moparts members
operated V8 engines for long periods
with only 7 cylinders firing?
Have any Moparts members
repeatedly taken 7 cylinders of a V8 to wide open throttle?
On a vehicle?
On a shaft Dyno?
The purpose of this is to find the real world
'power balance'
of each of the 8 cylinders.