4spd to a 5spd conversion advice

71 Lil Greeny
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4spd to a 5spd conversion advice

Unread post by 71 Lil Greeny » June 6th, 2015, 3:15 pm

Hi guys
I have a fj40 f engine with a 4spd gearbox and I want to convert it to a 5spd
Ive got I 5spd from a 60 series on a 2h engine available to me
Just want to see if Anyone has done the conversion or point me in the right direction
Before I waste time and ESPECIALLY MONEY

typhoeus
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Re: 4spd to a 5spd conversion advice

Unread post by typhoeus » June 6th, 2015, 5:42 pm


Robertus
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Joined: September 28th, 2009, 4:48 pm
Location: Brisbane

Re: 4spd to a 5spd conversion advice

Unread post by Robertus » June 22nd, 2015, 6:48 pm

IMG_1361.JPG
All I can say is:- unless you have rebuilt the 2H then don't even think about putting a Auto behind it. As waste of time & effort. It was only a 105hp engine when brand new in its original state and now would be lucky to produce 78hp. Get yourself a 12Ht, rebuild it like I did and look after it and it will last another 30 years?
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Rogers Cruiser
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Re: 4spd to a 5spd conversion advice

Unread post by Rogers Cruiser » June 22nd, 2015, 10:23 pm

Robertus he never said anything about an auto? just a 5speed from a 60. And not everyone has thousands to spend on a rebuild. (dont get me wrong I love your thread on Mud, but you have also advised others to do the same and the costs are in the 1,000's)

You have a few options depending on what you have now.

You can bolt the 5speed straight up to the back of the 2F engine in the FJ45. This is a good result but its not perfect, the 5speed isnt the right gear ratios for the F engines.

The other option is to drop in the 2H and the speed, its a firly easy job but will still require a few other parts, like fuel system and radiator, engine mounts ect.

Either way, when you put the 5 speed in the 40 you need a newer transfercase without the handbrake or you will hit the crossmember, if you do that you need a late model 40 series rear diff with the 4 bolt pattern brake mounts, and the rear brake setup from a 60/75 series, and a new handbrake cable.

I have done this a couple of times now (both my 40's now have 5 speeds, its not hard but the cost of things starts to build up.)

Any further questions just ask,
'98-'06 - FJ-45 Ute fell over one day and didnt survive
'06-now - HJ-47 Troopy, restored and now daily driver.
'13-now - HJ-47 Ute, Farm fresh rust bucket, needs a restoration. viewtopic.php?f=22&t=152811

now - Off Road Box/Camper Trailer. viewtopic.php?f=134&t=153968&p=1792444#p1792444

Dont listen to me, Ive got an opinion on everything!

71 Lil Greeny
I'm new, be nice!
Posts: 7
Joined: January 10th, 2015, 7:12 am
Location: Sydney

Re: 4spd to a 5spd conversion advice

Unread post by 71 Lil Greeny » June 25th, 2015, 9:00 pm

Thanks for the advice typhoeus and rogers cruiser
I might have to look in to dropping in the 2h to the 40
That means I've got to track down some disc front brakes for her as well?
Robertus thanks for the advice but I don't have that kind of money to spend low budget in the back of the shed kind

Rogers Cruiser
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Joined: January 3rd, 2014, 8:04 pm

Re: 4spd to a 5spd conversion advice

Unread post by Rogers Cruiser » June 25th, 2015, 10:44 pm

YOu dont necessarily need Disk brakes with the 2H but they are better, the 2H came in the HJ47 for 2 or 3 years untill they got disk brakes.
'98-'06 - FJ-45 Ute fell over one day and didnt survive
'06-now - HJ-47 Troopy, restored and now daily driver.
'13-now - HJ-47 Ute, Farm fresh rust bucket, needs a restoration. viewtopic.php?f=22&t=152811

now - Off Road Box/Camper Trailer. viewtopic.php?f=134&t=153968&p=1792444#p1792444

Dont listen to me, Ive got an opinion on everything!

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