3FE Manual Swap?

[kevin g 317]

So I have a 1991 FJ80 with a 3FE and an auto (obviously cuz it’s USDM), and I’d like to swap it to a manual. I know to use a 3FE H150F transmission, but I’m curious as to what else I need to do to get it ready for the swap. Like, what about the ecu? Would it freak out if I pulled the auto and try to put it in some sort of limp mode? Just curious for all this lol thanks!

 

[TheBussman]

So I have a 1991 FJ80 with a 3FE and an auto (obviously cuz it’s USDM), and I’d like to swap it to a manual. I know to use a 3FE H150F transmission, but I’m curious as to what else I need to do to get it ready for the swap. Like, what about the ecu? Would it freak out if I pulled the auto and try to put it in some sort of limp mode? Just curious for all this lol thanks!

no worries about that, the auto transmission is fully mechanical, no electronics.

 

[Godwin]

So I have a 1991 FJ80 with a 3FE and an auto (obviously cuz it’s USDM), and I’d like to swap it to a manual. I know to use a 3FE H150F transmission, but I’m curious as to what else I need to do to get it ready for the swap. Like, what about the ecu? Would it freak out if I pulled the auto and try to put it in some sort of limp mode? Just curious for all this lol thanks!

It's been done but I don't have a link. With a 3FE you can use a 2F or 3F bellhousing, which are found on FJ60s, and a H41, H42, or H55F transmission. ECU don't care. You will need to rewire around the neutral start switch, which is easy. Pedal bucket to have a clutch pedal may be an issue, not sure if you can source one or need to fab something.

 

[Bjorn Ogderlund]

The 3FE mates up to the H55 pretty easily, and is comfortably smooth shifting. It makes the tractor motor seem a lot more powerful, but you'll win no races. Unless it's with a D5, you can beat a D5. (On pavement) You might be able to find an H55f on the shelf at Toyota. (NOTE: I haven't been in the market for a while, so I may be wrong.)

 

[TheBussman]

if you decide to run the h55 you'll need a splitcase too.

 

[60 toy ota]

Everyone's covered it. H41/2 (4 speed) can be had for pennies out of a 60 series. H55 (5 speed) you'll need to open up the wallet but the performance will be vastly different. H150 will not pair.

 

[OGBeno]

Everyone's covered it. H41/2 (4 speed) can be had for pennies out of a 60 series. H55 (5 speed) you'll need to open up the wallet but the performance will be vastly different. H150 will not pair.

H150F will pair with 3F-E.

 

[60 toy ota]

H150F will pair with 3F-E.

I thought it was in family with the h151 and h152. Thanks for correcting

 

[OGBeno]

I thought it was in family with the h151 and h152. Thanks for correcting

It is and early H150F trans had the correct input shaft for the F series family engines.

Non-US FJ80’s had this combo.

 

[60 toy ota]

It is and early H150F trans had the correct input shaft for the F series family engines.

Non-US FJ80’s had this combo.

Wow, I would never have known. And that was with same 2&3F bell housing we had here in the states?

 

[fjbj40]

Check out Kw90surf thread on his 3fe 80 h151 swap.

 

[OGBeno]

Wow, I would never have known. And that was with same 2&3F bell housing we had here in the states?

Totally different bell housings and input shafts between the H55F mated to a 3F and an H150F mated to a 3F. Not interchangeable.

 

[Stuckinthe80s]

I've done a manual swap using a H42 out of a later 60 series. While it did make the truck drive better around town, it was pretty disappointing for me. I don't know why, but I thought switching out the slush box was going to have a lot higher return on the effort. It didn't.

If you're using an H150, the swap is going to cost you close to $5k when it is all said and done, and you may regret it. To each his own, just consider doing a V8 swap of some sort.

Not trying to talk you out of it, per se, just giving you real-world experience with the conversion. I loved the soul of the 3fe, but in the end, the lack of power pushed me to do a V8 swap and I'm so glad I did.

 

[Marco Lau]

You only need a V8 if you are:

1. towing
2. Trying to get a speeding ticket on the highway
3. Passing traffic on the fast lane pulling steep grade
4. or rocking 40s and need lots of skinny pedals to get over a large obstacle.

If none of the above, my 3FE is happy and my wallet is happy.