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Discussion Starter #1
Hi all, 1st time poster on forum.
Have a great little '96 3 door AWD.

3sfe is a little tired and have a lot of availability to gen3 3sge engine, loom and brain from MR2's.

I have swapped a 3sfe to a 3sge in Mr2 before which was very easy (engine, loom and brain connected to remaining loom at passenger footwell)

Open to trying new things and researched last mr2 swap well before I carried it out successfully.

As all you guys have more experience than me on Rav4's, my question is whether the same swap on a Rav4 is as simple?

Any thoughts, experiences, advice or tips would be greatly appreciated.

If all is good I can source all parts and have new engine ready for transplant.

Many thanks in advance
Pic of my Rav4
PS, fitted RX8 seats out of Boredom!
Very comfy and warm in winter!
 

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From everything I've found in my own research into doing a GTE conversion on a 98 Rav, the wiring harnesses do differ on the RAV4 to the MR2s as far as I can tell. Best thing to do would be to grab a wiring diagram for your model year of RAV and a wiring diagram for the donor car, and start comparing the two to see where they differ. Else, if you have a spare RAV4 engine harness plus an uncut engine harness from your donor, you can send them both to WireGap and they will merge the two together and return a ready-to-fit wiring harness that will work out of the box for your setup for a fee.
 

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Discussion Starter #3
It's actually the 3sge 168bhp conversion I'm thinking of.
I'd like to know if mechanically everything matches up OK?
I will have to look at the loom and you're recommendation of WireGap will be useful.
The 3sfe is just a little underpowered but I'm not looking at turbo.
Very familiar with the 3sge.
Anything I need to look out for by way of stumbling blocks?
 

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It's actually the 3sge 168bhp conversion I'm thinking of.
I'd like to know if mechanically everything matches up OK?
I will have to look at the loom and you're recommendation of WireGap will be useful.
The 3sfe is just a little underpowered but I'm not looking at turbo.
Very familiar with the 3sge.
Anything I need to look out for by way of stumbling blocks?
Mechanically yes, the GE/GTE are a straight swap in place of the FE. Some people have complained about engine mounts not quite matching up (not sure why) but if you have the RAV4 mounts and MR2 mounts I can't see why you couldn't make it work if you had issues. Aside from that it's pretty straight forward. You will also need the flywheel from the donor engine too as the FE crank bolts are a little further outwards than the GE and GTE, so if you use an auto donor car you'll need to source a GE or GTE flywheel. 3S/5SFE clutch kits will also work on a 3SGE flywheel (not GTE).
 

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Discussion Starter #5
Excellent stuff and great news.
I imagine the loom from both donor and original will have to be sent off to be matched up. I'm mechanically good but not electrically.
The loom swap in Mr2 was an incredibly simple process.

Any suggestions ref centre diff lock functionality after swap?
 

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As long as you retain the RAV4 trans (obviously), the push-button center diff lock should still work after the conversion given you will retain parts of the RAV4 engine-side harness after the harness merge.
 

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Discussion Starter #7
Thanks buddy. I'm UK based but will probably use WireGap as I'm not aware of any UK specialists.
Should be enough to give the little RAV a bit more legs!
 

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1999 Toyota RAV4 with 3MZ-FE 6 cylinder engine, camo wrap, OME lift, heavily modded
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