moodifyin a 3F

Joined: 31 Dec 2004 Location: tamworth

ok guys ur all probly gonna laugh at me a redicilious ammount but a bloke must look at all options, so..... failing to get a V8 or a newer v6 wat is the bost possible option of pulling a few more pony's out from unda the hood of the 80, one of the things ive heard was

*u can use holden compatable carbies on it for example a holly carbie...?

*possible to get a mild cam for the 3F?

*an injected head on it?

* then the usual new pistons, rings, gaskets, headwork, and gas/ gas tunning.

if any one can give me info, or, point mein the right direction to find out more about the ol 3f motors and in wat way they can be improved, yes i know i hav crazy ideas, but if i didnt i would be way to borein!

cheers guys
TY. Very Happy

Joined: 17 Dec 2005 Location: campbelltown

don't know if it will help but geat build

i think this guy is also on here

http://forum.ih8mud.com/40-55-series-tech/134529-2f-3f-e-%3D-2f-eti-into-my-fj40.html

Joined: 31 Dec 2004 Location: tamworth

cheers mate might hav to try and get hold of matt some time

Joined: 03 Jun 2005 Location: Mitcham, Vic

You rang

Joined: 03 Jun 2005 Location: Mitcham, Vic

This maybe of help too, a little more stock 2FE using the 2F block and 3FE head.

http://forum.ih8mud.com/nm-high-desert-cruisers/147541-da40-baby-steps-forward.html

Basics:
Early 80's came with either a 3F (carby) with manual or 3FE (injected) with auto. To make a 2FE you need the head and injection system from a 3FE. All interchangeable and bolt on. You also require the 3FE ECU

The taller 2FE may require more room under the hood in an 80, but a 2" body lift would fix that. All in all a stock 2FE can be done on a budget and is not a bad upgrade. I would recommend removing all the EGR and de smogging it too.

Joined: 30 Aug 2009 Location: Australia

I had a j75 with carb'd 3f on gas
more power
i got a custom race cam ground up (seemed to hold the gears heaps better when flogging through sandy track or down the beach, i prob lost a bit of low low down tourqe but thats what low range is for)
got the head shaved for more compression(def better for gas to)
got bigger valves put in the head and double valve spring to suit inj 304 holden
Never got around to getting more fuel/ changing the carb in it it def needed more juice top end but still went well
sounded sweet and lumpy losts of people would think it wa a v8 which is sh1t becuase its was not what i was after, people just never hear a lumpy 6 and presume lump is v8 and people asked why waste your time doing up a truck motor just think about how mush power the 265 hemi's were getting for a "6 truck motor"
i thought it was something different to but but still no were near a v8 conversion for power

Joined: 21 May 2008 Location: Birkett Place sth geelong

You cant go to radical with the 3f, but a 240 grind cam 2-3 deg advanced on install, the carby to suit, some extractors, a ford XE ign set up in the dizzy with good ign and coil pack, and they should get along better than a standard one.

A turbo on inj model can also work ok, but 5-7 psi should be the max with the crank set up.

Posted: Mon Sep 07, 2009 5:45 pm

tyler its only your toy. just live with its performance.
otherwise you will end up spending a packet and its still a 3f.
think of the lockers, cage, barwork, winch and all the rest you can spend money on instead.

Joined: 12 Feb 2007 Location: Australia

Hey Assasin,

How much of a difference would a better than stock coil make? Any recommendations? I'm currently running a VK commodore distributor.

Anyone know how much can be shaved off the head and what kind of compression a 80 series 3F can handle?

Dads old FJ62 had HEAPS shaved off the head, had to shave the lifters to get adjustment back, but we never measured how much of a shave it was Thing flew though for a 3F

Joined: 10 Mar 2004 Location: melbourne australia

straight lpg and a turbo

been running my fj45 now for over a year tho ive only dont 5000kays if that
have finally worked out the kinks and accepted that without spending big $$ low boost and keep it simple is the best option

running 6psi no intercooler and stock everything even running a points dizzy (with a electronic conversion box)

total i spent was around 2500 including a new clutch and new radiator

Joined: 30 Aug 2009 Location: Australia

a bloke at wanneroo 4x4 in perth told me once he has a custom made turbo kit for a 3f he got it of his brothers old 6 wheeler cruiser ute and would sell it for 2g or something that was w while ago, i would have bought it but he told me about it after done my comprseeion raising to my motor

better yet sell your 3f 80 series and get a 1fz-fe 80 series and turbo it for huge ponys

Joined: 21 May 2008 Location: Birkett Place sth geelong

Regarding the points dizzy, we have had some that use the points as a switch to tell the box when to fire, and when the points get dirty [and they will, no spark to keep the face clean] they go into multi spark, this is why we convert them to falcon modsule hall effect type set up.

A coil on its own would make < 1%.

Joined: 31 Dec 2004 Location: tamworth

awsome info guys, keep it comming hey, anyone know how much a cam is to get made, or dose some one sell a range of performance cams? also how much is a rebuild kit for them and where do i purchase one, and haha, can i get more info on the 3FE conversion, prices, places to purchase pieces???

Joined: 21 May 2008 Location: Birkett Place sth geelong

Cam, just have yours ground, you will need some better valve springs to go with it though.

I think we used to use a Holden ones.

Joined: 31 Dec 2004 Location: tamworth

ok cool, so it wont affect the strength at all? how much is recomended to take off i hav a friend who can do all that stuff foor me, and wat kinda valve springs, specs to go with if possible?

Joined: 30 Aug 2009 Location: Australia

from memory i think it was around 200 bucks to get the cam ground to different spec
i went with holden v8 after market duble valve springs
i wouldnt bother with efi there speks they only make 2 more kw and not much more for tourqe

Joined: 31 Dec 2004 Location: tamworth

ah k cool,

*can anyone get a price on buying new pistons and rings? or a link to get hold of the right bits?

*wats the right compression ratio for this motor??,

*wat carbies work good, if i was to stay carbie and gas conversion ?

Joined: 25 Dec 2007 Location: Tasmania, Australia

I just had my 2F rebuilt.. I put a crow torque cam in there.. Stock intake. Electronic ignition. Genie headers and a 2.5 inch exhaust. Goes good on petrol and gas..

Joined: 12 Aug 2003 Location: wollongong

60 thou is the magic number for head skimmimg the good old 3f for dual fuel....
Andrew

Joined: 31 Dec 2004 Location: tamworth

sweet!
please sir can i hav some more.......... Very Happy

yes im verry keen to find out info about this ol banger unda the hood hahaha!

Joined: 30 Aug 2009 Location: Australia

once you get your cam you should be able to do this this Wink

http://www.youtube.com/watch?v=eiJmRB-Y02Q

Joined: 21 May 2008 Location: Birkett Place sth geelong

TYLER wrote:

ah k cool,

*can anyone get a price on buying new pistons and rings? or a link to get hold of the right bits?

*wats the right compression ratio for this motor??,

*wat carbies work good, if i was to stay carbie and gas conversion ?

if you end up using aftermarket replacement pistons, check the oil escape holes around the oil rings, and make sure they are very similar to factory ones.

Iwould be surprised if the pistons were FUBAR though,

Joined: 31 Dec 2004 Location: tamworth

ah k cool thanks, dose anyone know the compression ration at stock for these motors??? im thankful cos i hav the guys at prostroke helping me, but! because im doing it all my self they want me to find out all the info ect, so that i know exactly wats goin on when they teach me how to doeverything, all comes to my advantage so that when the smallest ting is outta line i can identify the problem straight away and avoide killing it haha

Joined: 21 May 2008 Location: Birkett Place sth geelong

With that cam, running 98 octane or lpg I would aim for around 9.3:1.

Joined: 31 Dec 2004 Location: tamworth

ah k thanks guys!

Joined: 31 Dec 2004 Location: tamworth

anyone know who to speek to about buying prittymuch all the seals for the 3f motor and maybe how much in a guestmate figure???

Joined: 18 Jun 2006 Location: vic

me

pm sent

Joined: 12 Feb 2007 Location: Australia

Repco or bursons, are you rebuilding? I might be selling a low km 80 series 3F soon.