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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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conversion 4ac into ke70
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Sat, 14 August 2004 11:59
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i know its not much, yet i have a 4ac engine and im pretty sure its better than the stock 4kc
so is this an easy and cheap conversion to do as i dont have the funding or experience to do an age ke70 yet.
also would i get much of a gain if any out of this conversion?
thanks
Scott
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Location:
Sydney
Registered:
February 2003
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Re: conversion 4ac into ke70
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Sat, 14 August 2004 12:18
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its not gonna be much better.
it would be really easy though. just grab an ae71 crossmember
better still if you dont have the car yet. just buy an ae71 with a 4ac already
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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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Location:
Sydney
Registered:
February 2003
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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 04:27
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you will need a T50 with longer rear extension housing.
THere are two types, and each depends on whether u want to go swapping the diff as well.
#1. T50 from AE71 or AE86, with AE71 tailshaft
#2. T50 from TE72 (t18 liftback), with tailshaft and complete diff from same car.
a ke70 gearbox will not be easy to put onto a 4a.
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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 05:50
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kool, thanks, so i need to t50 box from a ae86 if i wanna keep my diff, will the t50 bolt in or do i need to mod it?
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 05:54
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ae86 and AE71 T50's are identical, thus either will do fine.
It will bolt in so long as you take the greabox crossmember off the donating car and keep it with the new T50
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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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Location:
Melbourne
Registered:
August 2003
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 07:48
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Okay, to summarise;
From an AE71, take:
# AE71 engine crossmember
# AE71 T50 transmission (*)
# AE71 transmission crossmember (*)
# AE71 tailshaft (*)
If the exhaust is on the same side of the car for 4A-C and 4K-C, it may be possible to use a standard 4A-C manifold and mate it to the KE70 exhaust at the collector or firewall. The 4K-C exhaust flange won't fit the 4A-C. So, if you don't have the manifold/front pipe section for your 4A-C, add to your list the following;
# 4A-C exhaust manifold and front pipe
The standard differential will be okay, but if you plan on 4A-GE later you could, as Whitzl suggested, replace (*) above with the following;
# TE72 T50 transmission
# TE72 transmission crossmember
# TE72 tailshaft
# TE72 differential, complete
This will give you a 6.7" T differential which should be capable of holding up to a 4A-GE later and for which many LSD centres are available.
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Location:
Sydney
Registered:
October 2003
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 07:56
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Don't forget that you have to change the clutch, from cable to hydraulic. This involves new clutch kit, hydraulic master and slave cylinders, and you also have to get the pedal box from the AE71 and put that into the KE70. And I can tell you from experience, it is a bastard of a job. If your going to do an engine conversion on the KE70 make it worthwhile. Dont worry bout the 4ac in my opinion not worth it.
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Location:
Melbourne
Registered:
August 2003
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 09:30
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Agreed, but when this conversion is done the groundwork will be laid for 4A-GE install.
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Location:
Sydney
Registered:
October 2003
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 09:32
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True, but why not spend the little extra and make it worth the conversion. Instead of doin basicly two conversions. When doing a conversion little things pop up and money is spent. I think it is better to get ti done in one go.
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Location:
Melbourne
Registered:
August 2003
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 09:46
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I gather that he owns a KE70 and has a spare 4A-C. I agree, I'd not bother for the questionable benefit of a 4A-C 'upgrade', though it's not my car so who am I to say?
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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 11:35
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i would agree with a 4age normaly, yet i cant affored it at the moment, and i will eventually make it into one, yet for the time being, i have a 4ac engine on the floor about 2 m from my foot, it works, so im genna put it in my ke70
thanks for your help so far 
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Location:
Montrose, VIC
Registered:
May 2002
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 12:43
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I put a 4AG in my KE70, and it's surprising the little bits that do pop up... Sure theres the Xmembers, the pedals+clutch cylinder, the tailshaft, then there's little things like the rad support panel and the speedo cable. I went to my local wrecker, and bought a chopped up in the back, but still otherwise complete, AE71, that way I had all the bits I needed. Sure I paid $250 for it, by the KE70 only cost $70! I wouldn't suggest the 4AC is a great thing to put in there though, they seem to be less abuse tolerant than the poor old 4K. Collect all your bits together, and put a 4AG in there first up, worth every second of your time. 
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Location:
Sydney, Hurstville, Pensh...
Registered:
August 2004
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 13:30
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umm would the manifold, xmemebers (gbox and engine) be able to come from an ae86?
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Location:
Montrose, VIC
Registered:
May 2002
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 14:59
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Yes, but good luck finding AE86 RWD 4AG manifolds, and if you do, people not wanting far too much for them 
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Location:
Melbourne
Registered:
August 2003
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Re: conversion 4ac into ke70
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Sun, 15 August 2004 15:20
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Surely you could hook up with someone in US/NZ to mail you one, where they should be far more plentiful?
Or go sidedrafts! <<note: this is said only to incite an anti-carb+4A-G rant from mrshin
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Registered:
September 2005
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Re: conversion 4ac into ke70
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Sun, 02 October 2005 10:12
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did this go ahead or what?
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