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post #1 of 17 (permalink) Old 08-01-04, 05:00 AM Thread Starter
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project motor: 3.9 or 4 litre? into an EA

i'm going to build a project motor over the next year or so to drop into my EA.... should i stick to the stock 3.9... or is there much work into putting a 4 into it?

anyone got any ideas?

thanks,


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post #2 of 17 (permalink) Old 08-01-04, 05:04 AM Thread Starter
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Re: project motor: 3.9 or 4 litre? into an EA

i dont want to have to change the tranny or anything... AU motor sounds like a prick to adapt... is the 4.0litre off say an EB just a drop in?

thanks,

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post #3 of 17 (permalink) Old 08-01-04, 05:07 AM
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Re: project motor: 3.9 or 4 litre? into an EA

Yes, an EB 4.0 will drop straight in and will have no problems with the 3.9 computer.


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post #4 of 17 (permalink) Old 08-01-04, 05:57 AM
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Re: project motor: 3.9 or 4 litre? into an EA

just use an AU motor. Much better base.

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post #5 of 17 (permalink) Old 08-01-04, 06:21 AM Thread Starter
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Re: project motor: 3.9 or 4 litre? into an EA

au motor i hae to change the starter motor and tranny and mounts dont i?

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post #6 of 17 (permalink) Old 08-01-04, 08:20 PM
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Re: project motor: 3.9 or 4 litre? into an EA

The starter motors are fully interchangable, and you don't have to use an AU transmission.

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post #7 of 17 (permalink) Old 08-02-04, 12:04 AM
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Re: project motor: 3.9 or 4 litre? into an EA

i do think you may need to use the AU belhousing

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post #8 of 17 (permalink) Old 08-02-04, 03:17 AM
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Re: project motor: 3.9 or 4 litre? into an EA

you dont HAVE to use the au transmission belhousing, just the lower bolts dont line up

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post #9 of 17 (permalink) Old 08-03-04, 08:17 AM Thread Starter
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Re: project motor: 3.9 or 4 litre? into an EA

hmmmmm... is the AU motor THAT much better... 4.0ltr EB i think will be enough... not to worried about much performance gain... just build a nice strong motor as a project...

cbf with computer change and looms etc,

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post #10 of 17 (permalink) Old 08-03-04, 01:35 PM
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Re: project motor: 3.9 or 4 litre? into an EA

go the au motor. much stronger bottom end. i'm almost finished my conversion, another two evenings and it'll be done.its not hard at all. use an au bellhousing, ea starter. when i finish i'll do a full write up on what has to be done/used.

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