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Location:
Canberra, ACT
Registered:
March 2003
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20v head on 16v 4AGE
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Mon, 13 October 2003 23:28
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Hi,
I think I'm about to buy a AE82, but the motor is bung (head gasket, scored bore). The car will eventually be built into a rally car, so I want the 20v box for the ratios, and think the 20v block would be a good idea (strength, compression, oil squirters).
Does anyone know if the 16v head will go on the 20v block? What about pistons?
Its either that or convert to 100kW AE92 motor. But that is pain with the wiring.
Marc
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Location:
Melbourne
Registered:
May 2002
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Re: 20v head on 16v 4AGE
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Tue, 14 October 2003 03:14
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it wil bolt on.
i have seen a ae86 running 20v bottom end and bigport head. don't think it was still a non-interferance motor any more though...
T
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Location:
Canberra, ACT
Registered:
March 2003
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Re: 20v head on 16v 4AGE
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Tue, 14 October 2003 05:37
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Thanks for that. Anyone know any different? Any more info?
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Club Member
Location:
sydney
Registered:
May 2002
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Location:
Adelaide
Registered:
September 2003
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Re: 20v head on 16v 4AGE
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Tue, 14 October 2003 07:38
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what about on the 7afe? if that was possable im sure it would be the best modded engine (not including conversion)corolla to date
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Location:
Richmond NSW
Registered:
September 2003
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Re: 20v head on 16v 4AGE
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Tue, 14 October 2003 10:23
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you will need to do a bit of work if u put a 20v head on 7afe as the stroke is diffrent u will lose compression i think if i can remenber right and there are a few other problems to its not just a bolt on job as many think. ur car will hammer through if u did do it 
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I supported Toymods
Location:
melbourne
Registered:
June 2002
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Re: 20v head on 16v 4AGE
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Tue, 14 October 2003 10:58
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a mate of mine did this hybrid in his sprinter, bigport head on "silvertop" 20 valve bottom end, worked fine, he didnt mention any problems. dunno if he used 16 valve or 20 valve pistons though.
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Location:
Melbourne
Registered:
May 2002
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Re: 20v head on 16v 4AGE
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Tue, 14 October 2003 23:02
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16v head onto 7a bottom end has been done heaps - even runs on stock ecu.
20v head should work.
T
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Location:
Adelaide
Registered:
June 2003
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Re: 20v head on 16v 4AGE
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Wed, 15 October 2003 02:37
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Do the 4age pistons have valve reliefs in them?
If you put a 20valve head on a 16 valve bottom end, these wouldn't line up with the valves.
if it is non interference then it probably wouldn't matter but I wouldn't like to think about it changing.
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Location:
Melbourne
Registered:
May 2002
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Re: 20v head on 16v 4AGE
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Wed, 15 October 2003 02:58
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4ag pistons have valve cutouts. so do the 20v.
the exhaust pretty much lines up, the inlet sort of does apparently. i have not played with one yet so i really cannot comment as to whether it is non-interferance or not
T
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 20v head on 16v 4AGE
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Wed, 15 October 2003 06:12
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the fly cuts are in the correct position but are not as deep as the 20V piston, i did a quick mock up one day and decided against the effort, but thats not to say it cant be done. the best person to talk to re 7AGE is Jhonny
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Location:
Adelaide
Registered:
September 2003
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Re: 20v head on 16v 4AGE
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Wed, 15 October 2003 10:26
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would a 7a-g/fe fit into a ae82 pretty easily or would it take some work.
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