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Old 11-01-2004, 02:15   #1 (permalink)
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capibility of the 5L

hey guys. just wondering how many kw's the 5L is good for without stroking it. im buying a AU in about a month and tossing up weather to get a 5L or the 6. what are the advantages in getting the v8 over the 6. jim mock says he can get 230fwkw out of the 6. im just curious cos ive only seen 220 out of the 8.
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Old 11-01-2004, 02:40   #2 (permalink)
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Re: capibility of the 5L

I'm quite interested in the potential of the 5 litre as well because i'm going through the research stages into a EF Fairmont 6cyl to v8 conversion. From what i've noticed on the forums, from my own research on the net and from talking to specialists, is that this particular engine can produce about 270-320 naturally aspirated kw. Once you hit this 'wall' the next step would be to build a stroker or blow the thing stupid with a blower or a twin turbo setup.
An AU v8 is actually a good engine to start with as the intake manifold and heads are pretty decent to begin with so you're fortunate in that regard. It doesn't sound like you require a highly modified version of this engine, but it is still good to know that the block can only withstand up to 500hp (375kw) so if you wanted something that extreme you would want to invest in a dart block..
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Old 11-01-2004, 02:49   #3 (permalink)
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Re: capibility of the 5L

yeah im not after something extreme but i was hoping to get about 250kw out of one. if someone knows what this requires it would be a great help.
i want to get a AU into the low 14's and im pretty sure 250kw will do it.
any help would be appreciated
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Old 11-01-2004, 03:17   #4 (permalink)
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Re: capibility of the 5L

250Kw should be pretty easy considering your starting with a good base. If you start with a 220kw XR8 a decent exhaust, cam and maybe a mild port or polish will easily get you to 250kw. The most restrictive pieces in the puzzle are the heads so if your aiming for more than 250kw maybe you should look at replacing those as well..
Don't take my word as gospel though cause i know it only in theory. There are many guys on here that have actually done the work and would be a better resource due to the fact they have experienced it first hand...
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Old 11-01-2004, 03:37   #5 (permalink)
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Re: capibility of the 5L

The AU engines are a great base for a decent V8. A simple exhaust and cam upgrade will easily yield 250kw or around 180rwkw. The realistic limits of a N/A 5L would be around 300kw and require alloy heads, intake upgrade, cam and EEC modifications. Anything more than that will need forced induction or a stroker package.

As for the I6 vs V8 debate, it really comes down to personal preference. The JMM kits do produce decent power but IMO a V8 producing the same power levels is a far better package. And using the AU as the starting point, modification of the V8 will probably work out cheaper than on the I6.
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Old 11-01-2004, 03:43   #6 (permalink)
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Re: capibility of the 5L

thanks for ure help mate. ill do some more research into it. ill prolly be starting with the plain 5L or the 185kw version
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Old 11-01-2004, 03:54   #7 (permalink)
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Re: capibility of the 5L

Quote:
Originally Posted by leezels
thanks for ure help mate. ill do some more research into it. ill prolly be starting with the plain 5L or the 185kw version
Even the standard AU V8 is a good base. It has GT40P heads, Explorer intake, 65mm TB, 70mm MAF. The main differences between the AU V8's is the cam which you will be one of the first things to be replaced anyway.
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Old 11-01-2004, 03:58   #8 (permalink)
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Re: capibility of the 5L

I tend to not realy agree that the AU is best!!!
Reason..You are paying big $$$ for them..Depends on budget?
To get anywhere near 200+ rwkw you have to change heads to aftermarket or Fords SVT [even on AU] inlet, throttle body, cam and maf..The TE50's run approx 240 rwkw with good exhausts..
The block and rotating assembly is the same from E.B to AUlll..
But if you are after mild tweeks yes 180 rwkw is about it with std Ford induction.Tlll's excluded...
To run 14's ?? The Sprints with good tyres run mid 14's and they are close enough to 200fwkw.. 3:45 ratio helps...
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Old 11-01-2004, 04:08   #9 (permalink)
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Re: capibility of the 5L

thanks for ure help mate, do u know when changing these cams weather or not it increases fuel consumption by alot? as the car will be used as a daily driver
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Old 11-01-2004, 04:12   #10 (permalink)
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Re: capibility of the 5L

ITs a no brainer really, the V8 will thump a I6 with the same mods. I've had a V8, I now have an I6. If I wanted all out performance I'd get another V8.

The I6 is a well balanced and capable car for sure. Day to day it is very easy to live with but its not a V8.
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