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3.9 or 4l 

 

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 Post subject: 3.9 or 4l
Posted: Sat Jun 23, 2007 6:25 pm 
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what do you rekon
i love the 3.9
4 litre yeah but the 3.9 is not looked at much

 

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Posted: Sat Jun 23, 2007 6:27 pm 
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And your point or question is?

 

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Posted: Sat Jun 23, 2007 6:34 pm 
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i just wanna know peoples opinions

 

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Posted: Sat Jun 23, 2007 6:37 pm 
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They are basically the same thing mate.

 

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Posted: Sat Jun 23, 2007 6:40 pm 
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Same motor, different head arent they? The ports dont flow as well as later model heads, but thats life.

 

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Posted: Sat Jun 23, 2007 6:45 pm 
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haha this thread is funny cause only a few hours ago i posted a poll asking the same thing in perthfalcons

i say stick with the 3.9, do a little head work, port and polish, and it should be sweet, as for the 4 litre, it means running smart-lock (or bypass), BEM, extra wiring ect ect ect...way too much work if u ask me for an extra 100 mL

oh is it multi-point?? if not then yeh go for the 4L or get a 3.9MPI :D

hope that helps buddy im still tossin up on the decision tho

 

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Posted: Sat Jun 23, 2007 6:46 pm 
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There are small differences in the head between each model really, nah I think the main difference is the 3.9L copped a slightly smaller bore.

 

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Posted: Sun Jun 24, 2007 1:25 pm 
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Big Tilly wrote:

i say stick with the 3.9, do a little head work, port and polish, and it should be sweet, as for the 4 litre, it means running smart-lock (or bypass), BEM, extra wiring ect ect ect...way too much work if u ask me for an extra 100 mL

oh is it multi-point?? if not then yeh go for the 4L or get a 3.9MPI :D

hope that helps buddy im still tossin up on the decision tho


and what is this based on ??

i have a 4 litre in my ea,,used all the running gear off the 3.9..

all the things you mention have nothing to do with the motor,,its all in the electronics built into the car itself.

 

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Posted: Sun Jun 24, 2007 2:38 pm 
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well i owned a 3.9cfi 88ea but now a 4l 95ef
love both cars
just make sure you do get a 3.9MPI at least
both cfi and mpi are fuel injected just the mpi has better resonse on pulling power up hills etc etc

oh and try to get a 4 spd if its a auto much better ten the old 3 spds
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Posted: Sun Jun 24, 2007 5:24 pm 
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naughtyfalcon wrote:
Big Tilly wrote:

i say stick with the 3.9, do a little head work, port and polish, and it should be sweet, as for the 4 litre, it means running smart-lock (or bypass), BEM, extra wiring ect ect ect...way too much work if u ask me for an extra 100 mL

oh is it multi-point?? if not then yeh go for the 4L or get a 3.9MPI :D

hope that helps buddy im still tossin up on the decision tho


and what is this based on ??

i have a 4 litre in my ea,,used all the running gear off the 3.9..

all the things you mention have nothing to do with the motor,,its all in the electronics built into the car itself.


also to add to this. not ALL 4L came with smartlock. EB I (some were 4.0) didnt have smartlock. my NC II has a 4.0 but was made in the period before smartlock was released. and as stated smartlock has nothing to do with the motor. its acts as an imoboliser. thats why there are a few ES's with AU motors in them ;)

 

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