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Old 09-20-2003, 05:04   #1 (permalink)
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Throttle Bodies

Which xr8 came out with a 65mm t/b & which xr8 came out with a 70mm t/b. Also what size maf does the au 1/2/3 have. thanks
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Old 09-20-2003, 05:14   #2 (permalink)
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Re: Throttle Bodies

au1 xr8,au2 xr8 had 65mm tb,and 70mm maf,
au3 xr8 220kw had tickford 70mm maf and i think a slightly larger (75mm) maf...
i have an au2 xr8 ute,200kw,and it has a 75 mm maf.....i bought it new and it has never been changed so if anyone else knows,feel free to correct me!
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Old 09-20-2003, 10:54   #3 (permalink)
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Re: Throttle Bodies

OK this is a bit of a stupid question, does the 70mm MAF need anything done to it to fit onto an earlier V8, apart from an EEC re-learn??

Did you measure the MAF yourself?
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Old 09-20-2003, 20:22   #4 (permalink)
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What size t/b is on an el2xr8 & what is needed to fit an au maf onto an el1xr8.If i get an au maf i will get the airbox lid aswell
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Old 09-20-2003, 20:33   #5 (permalink)
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Technically all you need to do with an AU MAF is change the electronics on the side to your stock E-series electronics. It is suppose to be calibrated for 19lb injectors, but some have found using an AU MAF makes the engine lean out, so you will probably need an adjustable fuel pressure regulator to tune the AF ratio on a dyno.
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Old 09-21-2003, 03:48   #6 (permalink)
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Re: Throttle Bodies

Quote:
What size t/b is on an el2xr8 & what is needed to fit an au maf onto an el1xr8.If i get an au maf i will get the airbox lid aswell

I think the EL2 XR8 & AU1 XR8 motors are the same. The EF/EL airbox lid is better than the AU one anyway.

EDXR8 - When you say the electronics, do you mean that small black box on the side of the cast MAF bit??
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Old 09-21-2003, 03:58   #7 (permalink)
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Re: Throttle Bodies

I don't really remember but I thought that the AU's had sequential injection, where as the EL had the dizzy??? I may be wrong
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Old 09-21-2003, 04:02   #8 (permalink)
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Re: Throttle Bodies

Oh and if you put the internals of the EL into the Au bits it should work but will run a little lean
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Old 09-21-2003, 04:13   #9 (permalink)
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Re: Throttle Bodies

you want it to run a bit leaner at the top end,from 60% throttle upwards,ford sets em way too rich,theres a bit of horsepower to be gained by leaning it out a bit in the right places,thats why the Ls1's respond so well to bigger maf's and stuff like that...need to do some tuning on a chassis dyno with an o2 sensor stuck in the zorst pipe...
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Old 09-21-2003, 13:27   #10 (permalink)
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Re: Throttle Bodies

When leaning it out,this is obviously done with a programmable chip right???
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