madmelon

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?

EFXR62

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

Cheers,
Yagz

rextus

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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madmelon

If these mods actually happened, why is the power/torque figure for the AU the same as my EL?

__________________
1987 Jaguar Sovereign - Metallic Green
3.6L DOHC 24 Valve
140KW@4750rpm
307Nm@3750rpm (Flywheel)

Walkinshaw

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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Ive been described as a vault of usless random knowledge.

Ill take it as a complement i think.............

madmelon

So this is not true then?

Jamie

there is more to torque than the peak output

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<b><font color="#000080"><font face="Arial" size="2">1992 EB Falcon GL [ </font></font><font face="Arial" size="1" color="#0000FF">Series 1</font><font color="#000080" face="Arial" size="2"> ]</font></b><br><font face="Arial" size="1"><a href="http://discussions.fordforums.com/showthread.php?s=&threadid=37673">4 Speed Auto with Shift Mod</a><br>Interior Neons<br>MPFI Conversion [sn]</font>

madmelon

...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.

SiX_iN_a_RoW

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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Lowered EF Futura
Black Steelies ( too cheap to buy proper mags )

madmelon

Thankyou :)

__________________
1987 Jaguar Sovereign - Metallic Green
3.6L DOHC 24 Valve
140KW@4750rpm
307Nm@3750rpm (Flywheel)