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Old 07-05-2003, 04:59   #1 (permalink)
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Join Date: Jul 2003
Location: Adelaide, Sth. Australia
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Engine Swap

Last time I wrote I asked about a 3.3 to 4.1efi engine swap in our old XF wagon, this time I want to know if the 4.1efi will bolt straight to the trans the 3.3 is bolted to or will we need a new trans? the 4.1efi motor is a good one and I'm doing all the work myself, female enginuity for u.
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Old 07-05-2003, 14:09   #2 (permalink)
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The short answer is yes, your 4.1EFI will bolt up to your 3.3 trans. Though you don't say if its an auto or manual trans.

Assuming its an auto, you might find that it (the trans) may have a shortened lifespan if driven hard.

You will find that the engine pipe won't match exhaust manifold. 2 choices, swap the exhaust manifolds over assuming the 3.3 is a alloy head motor, you'll be crimping the perfomance of the efi motor somewhat. Or you can replace the engine pipe and muffler.
The EFI motor uses a larger exhaust than the 3.3 does.

Are you going the full conversion to EFI?
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Old 07-06-2003, 01:02   #3 (permalink)
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Re: Engine Swap

What do you mean by full conversion to efi and yes the trans is auto but we not fast drivers but we do travel long distances ei Adelaide to back of Bourke kind of stuff as well as a lot of local driving.
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Old 07-06-2003, 01:26   #4 (permalink)
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Well are you going to install all the EFI stuff, ecu, wiring, plumbing, yada yada, or exchange the inlet manifold for your 3.3 carby manifold?

If your keeping your carby inlet manifold you'll need to upgrade to a 4.1 carby or else it will run too lean at speed and do damage.

If your keeping your existing auto I'd be fitting a trans oil cooler, it will give it half a chance.

Don't kid yourself long distance driving at high speed ( which you do out the back of S.A.) is stressful on a vehicle , not the same stressful as traffic light drag racing in town but stressful just the same.
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