2F and 3F similarities

Joined: 14 May 2003 Location: Northern Territory

Hey guys,

It seems I have run one of the main bearings dry on the 2F in my FJ40 and stuffed the crank. Such a shame as it was a sweet running original motor with less than 200,000 on it. Now I happen to have a 1984 model FJ45 Troopy that I bought for parts. It has a high milage 3F in it that was still running so I'm thinking I could grab the crankshaft and drop it into the 2F.

Can anyone tell me if the crankshafts are the same?

Joined: 18 Jun 2006 Location: vic

not quite sure buddy but im pretty sure it could be different as there is a 0.2L capacity difference dunno wether that makes a difference or wat

Joined: 14 May 2003 Location: Northern Territory

Really?
I thought they were both 4.2 litre motors. Confused

Joined: 04 Oct 2007 Location: brisbane

nah mate 3f only 3.9 and a lot slower motor than 2f

Joined: 15 Feb 2003 Location: Shed.

3F is basically a de-stroked 2F, the crank is different.

Joined: 14 May 2003 Location: Northern Territory

Thanks for the replies. I've saved a bunch of time not trying to make that 3F crank fit. I managed to track down another 2F crankshaft from a mate of a mate so with some new bearings and seals and gaskets I should be good to go early next week.

Thanks again for the info.

Joined: 14 May 2003 Location: Northern Territory

Still havn't put the 2F back together but now I've got another compatability question.

Will my 2F bolt up to the auto trans in an FJ73 that came with a 3F?
The FJ73 is in good nick and the engine runs fine it's just really gutless and thirsty compared to the 2F.

Joined: 24 Dec 2002 Location: South Australia

brumby runner wrote:

Still havn't put the 2F back together but now I've got another compatability question.

Will my 2F bolt up to the auto trans in an FJ73 that came with a 3F?
The FJ73 is in good nick and the engine runs fine it's just really gutless and thirsty compared to the 2F.

should do, all the 3f's i've seen had the same bellhousing bolt pattern, so i'd say yes