Fj62 3f Rebuild

Submitted: Saturday, Feb 11, 2006 at 09:37
ThreadID: 30670 Views:5105 Replies:3 FollowUps:3
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Gidday People,
I am thinking about doing a rebuild on my 3f before I have to. It has aboout 450k on it and is on gas. I was wondering if anyone has rebuilt one and what cam etc is available to get a little more go out. Have done a few engines before but mostly chev for boats and I dont want to build a really revvy engine for the cruiser. Any advice appreciated.

Thanks in advance
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Reply By: b4no1member - Saturday, Feb 11, 2006 at 13:06

Saturday, Feb 11, 2006 at 13:06
gday andy.
3f are quite a simple engine to rebuild nothing hard about them.
a cpl of things to remember is make sure you get the main bearings in right each main is different from the next.
get the crank crack tested there prone to breaking.
any good cam place should be able to grind something up for you.
AnswerID: 154441

Reply By: Muzzgit (WA) - Sunday, Feb 12, 2006 at 02:15

Sunday, Feb 12, 2006 at 02:15
The mechanical workshop I used to go to when I lived in the northern suburbs tried everything to get the 2F and 3F engines to burn less fuel. After many years and many trials and tests and rebuilding lots of engines with different ideas on fuel consumption, he gave up trying.

Extractors....marginally better, just !!
Holley carby....bad idea.
5 speed box....well duh!!
Different cam grinds....a slight difference - hardly noticable.
Electric thermostatic fan....marginally better, just !!
Drive like my mum....a lot better.

He now just tells people to lay of the gas pedal and get on with other stuff.


I bought an FJ62 with a newly reconditioned engine and the crank sh*t itself at about 12,000 K's.
AnswerID: 154510

Follow Up By: Muzzgit (WA) - Sunday, Feb 12, 2006 at 03:21

Sunday, Feb 12, 2006 at 03:21
OOPS !!! I thought you were asking about better fuel consumption, but I got that wrong didn't I !!!!

More power, yep, a cam grind, bigger carby and better exhaust will help for more power.

You may find fuel injection off an early model 80 series but I'm not sure what good it would do.

Might be cheaper to look for a V8.
FollowupID: 408466

Follow Up By: AndyR - Sunday, Feb 12, 2006 at 11:31

Sunday, Feb 12, 2006 at 11:31
Thanks guys
Will get the crank checked as advised. Used to do that stuff when I was in aviation but no access to the gear now. The carb I have is pretty tired so will look at whats around. Have been told parts for them are hard to come by particularly the accel pump area of them. Tho I have done nothing to find out for myself as yet axcept ask on here. Am out in Gippsland...Trafalgar actually.....and will start looking for suitable rebuild shops to get the bits to. Thanks again.

"cant think of anything catchy of philosophical right now.... but will try"
FollowupID: 408490

Reply By: Muzzgit (WA) - Monday, Feb 13, 2006 at 01:34

Monday, Feb 13, 2006 at 01:34
Andy, If you want to stick with the original carby (which I think is a good idea) in most major cities you will find a carby overhaul specialist. Freight to and from wouldn't be too much, only drama may be gettin' someone to tune the whole shebang properly once it's all done.

Be prepared for the cost though. I had the carby done on my FJ62 (on gas) and it came to over $800.00 !!!!!!!!!!!!!!!!!!!
AnswerID: 154654

Follow Up By: AndyR - Monday, Feb 13, 2006 at 07:54

Monday, Feb 13, 2006 at 07:54
Thanks Muzz. Expensive seals hey.
I am in Aviation. I could never make an hourly rate these guys can. Will go down the DIY road.... again.

"Woods always warmer when you cut it yourself".............or was that when the wife cuts it?...............
FollowupID: 408639

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