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Old 10-26-2003, 23:04   #1 (permalink)
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au engine question...

hey hows it going fellas,my last car i builtand drag raced was a street 351 xe falcon with nitrous,and all the usual mods .i spent over 20,000 all up on motor and driveline.
i sold all(3) my cars 3 yrs ago and have been doing a bit of research on my next car.i have only ever modified fords(virtually all clevelands,some older carbed windsors)
im 41 now and decided the next project that will also double as a daily driver (when im not up at work in the mines)will be an e.f.i falcon.

now a few questions etc ,what size MAFand throttle body does the standard au v8 (175 kw) have .

also what heads does it run,i am assuming they are not e7te,are they f3ze or what

what intake does the au run.it seems to me that these cars are pretty cheap,and considering the ef,el xr8 was rated at 165 or 170 kw that the au standard v8 is a reasonable bit of gear.

i like the ef xr8 the most but from an article i read by herrod recently that it is better to start with the au for extra kws for dollars spent sort of thing.and the ef xr8 has the e7te heads smaller tb and maf.(is this really so bad,what do you fellas think)

for the money i spent on clevelands thay made big topend horsepower but i think lower and midrange torque feels more impressive,and the windsors deliver right there i reckon.

what are the diff ratio numbers commonly available for ef,el xr8,and standard au v8

i am considering the au xr8 also just means i have to spend a bit longer in the bush.

so what heads and manifold on the standard au v8 as opposed to the au xr 8 and any other info you think is of use.

what ever i i would stroke it in the end as i dont think you can beat cubes

well that is about it.
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Old 10-27-2003, 00:09   #2 (permalink)
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Re: au engine question...

dunno much bout the eights but all std lsd ratios are 3.45, you can get whatever ratio you like pretty much a/market
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Old 10-27-2003, 01:44   #3 (permalink)
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Re: au engine question...

The LSD's can only be had in 3.08, 3.23 and 3.45. It's possible to get a Skyline gear and run a 3.7 or 3.9 ratio. They're a Borg Warner/BTR diff.

The article you are talking about was in Street Machine, and in my opinion, it's a load of crap. The differences between an AU V8 and EF V8 is the inlet manifold, throttle and MAF. These will all need to be replaced anyway, as they're not that big, and flow poorly compared to aftermarket items.

I'm fairly sure the standard AU1 V8's still run the poxy E7 heads.
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Old 10-27-2003, 15:39   #4 (permalink)
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Re: au engine question...

Quote:
Originally Posted by Aaron_EF8
The LSD's can only be had in 3.08, 3.23 and 3.45. It's possible to get a Skyline gear and run a 3.7 or 3.9 ratio. They're a Borg Warner/BTR diff.

The article you are talking about was in Street Machine, and in my opinion, it's a load of crap. The differences between an AU V8 and EF V8 is the inlet manifold, throttle and MAF. These will all need to be replaced anyway, as they're not that big, and flow poorly compared to aftermarket items.

I'm fairly sure the standard AU1 V8's still run the poxy E7 heads.
Correct !!!!!
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Old 10-27-2003, 21:01   #5 (permalink)
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Re: au engine question...

thanks fellas,so the ef,el xr8 and standard au all had e7te heads,but the au xr8 had the gt40 (or gt40p) heads,yeah, is that right?

if you get the e7te heads ported with 1.90 i,1.60 e valves and port matched etc etc it will flow good for mid range torque,i have found head flow comparisons charts on yank sites and they come up pretty good(if those articles are accurate.

if im going for say 200 kw flywheel power as long as those heads can support that then they are not a restriction,and you still get the good torque characteristics of the windsors

many years ago i ported a set of 289 heads myself on a bored 289 (.040 over) with an edelbrock performer,headers,10:1 comp 600 vac sec holley,280 deg kelford (n.z cam company) cam it had good power everywhere,low and mid range was impressive,so i figure the e7te heads must be ok unless you want big horse power numbers,say 220 kw or more

do any of you know off hand what the e7's can support when flowed.

if im looking at ported heads with bigger valves etc ,extractors,edelbrock performer manifold,1.72 roller rockers,bigger maf,bigger throttle body(70mm maf,70mm throttle body---- is it best to have the throttle body and maf same size or what,what is the go there fellas),cold air ,k+n,electric fan(s),from my research this sounds like a good everyday package,what do you think is there any area that i am off base or outright wrong.these e.f.i cars with computers are a fair bit different,but i want to become the full bottle on them.

with the above combo would i need to go to 24 lb injectors.

i want to keep the original cam if possible(the standard .444 lift cam with a 1.72 rocker has .478 lift at the valve.)

i like the idea of a sleeper like a standard au falc or fairmont,if i dont get an older xr8.

for what it is worth i set up a nos dry kit for someone on a commodore v8 e.f.i car as up to now i have only set up nos on carb engines,it has dropped 1.1 seconds off the 1/4.it is like adding 50 to 75 kw (flywheel),i would look at that on a falcon but keep the jetting conservative so a 50 kw boost sounds good

i want to set up my system so i can take it off the car with relative ease,as you know you cant have any nos components on the car in w.a on the street,i use to drive around with mine all there but with the bottle not hooked up,and thought i was ok,lucky for me i was not pulled over,so do your home work with any and all changes you do to a car,the cops looked at me a fair bit but i think they saw i was an old fella and wasnt doing anything blatant,so let it slide,even though it was obvious from the car idling at the lights that it was far from standard.

this time i dont want to have to worry(showing my age again),so apart from an intake manifold dont want to much to give the game away visually.

anyone know of any head porters etc that are good in perth.

my last engine was the first i didnt put together myself,and i got the kosteckis (total performance) to build it and was extremely happy with there professionalism etc

is there any others in the perth area that are windsor gurus or ford modification specialists,if so please let me know,

thanks for all your help and comments so far,it has been a great help.
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Old 10-28-2003, 03:56   #6 (permalink)
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Re: au engine question...

AU l's had e7 heads even on XR series..
For what it's worth to pay someone to port those heads you could buy some GTp's for around $1k or port those E7's yourself. On www.corral.net there's info how to there...Fit better valve gear to BOTH these heads..Valve springs are not that flash !!!
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Old 11-10-2003, 01:42   #7 (permalink)
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Re: au engine question...

Thats interesting my AUI had the GT40"p' heads on it when I purchased it new... spend more money and buy alloys
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Old 11-10-2003, 01:47   #8 (permalink)
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Re: au engine question...

Quote:
Originally Posted by redhotxr8
Thats interesting my AUI had the GT40"p' heads on it when I purchased it new... spend more money and buy alloys
Exactly!!!
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Old 11-10-2003, 02:36   #9 (permalink)
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Re: au engine question...

The MAF on the AU1 is 55mm(I think), 65mm throttle body, GT40 Explorer manifold, 19lb injectors,same as the EL2.I am gradually getting more KW's out of mine(EL2).
I have got Trickflow heads,inlet and 1.7 rockers along with the stock injectors(19lb),stock throttle body(65mm), stock MAF(55mm), stock headers with a dual cat-back 2 1/4" exhaust and am currently getting 163.8 rwkw's.
Just waiting on a new 75mm MAF to arrive then I can install 24lb injectors with it and "maybe" some Genie headers (thankyou Mr Sparkle!).
PM me with your email and I will send you my dyno sheet.
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Old 11-10-2003, 04:28   #10 (permalink)
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Re: au engine question...

Here's some site's on porting the E7's. Do it yourself i reckon.

http://www.mustangcentral.net/tech/e7.html

http://www.cmc.net/~xero/Mousesporting.html
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