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Australian Falcons Discuss the australian born and bred models here. Includes the 80's 90's and present day Falcons offered by Ford Oz.

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Old 05-17-2003, 03:44   #1 (permalink)
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Question BA and E series engines

Apparently the BA has its redline at 6000. This was raised from 5500 in the late E series (EF, EL) cars due to upgraded valve systems etc from what i've read. As far as i know there have been few modifications to the pistons, conrods, crank etc.
Would this mean that the E series engines could push 5500 "all day" without worry except for the valve train? if not, why not? Do the late E series engines have some sort of reliability problem below the head area?
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Old 05-17-2003, 04:47   #2 (permalink)
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The BA has a double overhead cam system.. Which could be the reason for the extra revving limit..

But really, it's about torque mate

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Old 05-17-2003, 05:32   #3 (permalink)
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from AU on there were mechanical changes made to improve the I6's high speed performance, the major one being an increase in rod length to reduce rod angularity by improving rod length to stroke ratio. This reduces piston friction (also helped by moly coated pistons on AU) and gives longer piston dwell around TDC improving torque output.
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Old 05-17-2003, 05:35   #4 (permalink)
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If these mods actually happened, why is the power/torque figure for the AU the same as my EL?
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Old 05-17-2003, 05:38   #5 (permalink)
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becuase changing the rod length wont affect the power or torque, it will just alter the high RPM charicteristsics of the engine.
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Old 05-17-2003, 05:41   #6 (permalink)
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Quote:
Originally posted by rextus
...and gives longer piston dwell around TDC improving torque output.
So this is not true then?
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Old 05-17-2003, 21:11   #7 (permalink)
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Quote:
Originally posted by madmelon
So this is not true then?
there is more to torque than the peak output
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Old 05-18-2003, 03:27   #8 (permalink)
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Quote:
Originally posted by Walkinshaw
becuase changing the rod length wont affect the power or torque, it will just alter the high RPM charicteristsics of the engine.
...how bout we all get our facts straight. I'm gunna ask someone in the know at Ford or some other engine specialist...then we can all agree.
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Old 05-18-2003, 03:52   #9 (permalink)
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basically if an engine has a really long stroke it wont want to rev high, generally speaking anyway, so basically I guess ford shortened the rods in the AU and changed the crank(?) so the pistons are still travelling the same distance in the bores but with a different pivotal point ( big end ) which I guess helps the engines revving characteristics and puts less force on the bores and pistons themselves.
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Old 05-19-2003, 04:23   #10 (permalink)
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Thankyou :)
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