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Location:
Melbourne
Registered:
June 2005
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The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 13:23
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I'm new here and I have a 1990 Corolla SX with a 16 valve small port 4age engine.
Since I have brought this car I have done alot of research on the 4age and found out that it is a popular 4 cylinder engine.
I have also done alot of research on how to turbo charge a 4age and alot of people tend to say different things and I am starting to get confused.
All I want to know is:
What is the best and easiest way to make a turbo 4age and which of these engines will be the easiest to fit it in a AE86 Sprinter? Lets say the engine will run at around 12 to 14 psi of boost.
There are 3 option they are:
a) 20 valve 4age head with 4AGZE bottom end
b) 20 valve 4age with 4agze pistons
c) 16 valve 4agze
So could someone please answer this age old question!?!?!?!
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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 13:30
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16V 4agze, microtech, T28 BB turbo, decent manifold, cooler and exhaust with propper tune
thats all you'll ever need haha
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Registered:
October 2004
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Location:
Sydney
Registered:
September 2004
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Re: The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 13:32
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It really depends on what YOU want from it and the kinds of parts you can acquire.
Me personally, I'm going with a 4age smallport bottom with GZE pistons and a bigport head. Why? Because i can use all the RWD gear from my current bigport, eg. water outlets, intake manifold etc. I picked up an entire smallport engine with flywheel for DIRT cheap as well.
Add that to the fact that i want a brand new engine so am going with a complete rebuild. AFAIK, putting GZE pistons into a 20v head makes it an interference engine due to the lack of the 5th valve cut on the piston.
Eddie.
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Location:
Melbourne
Registered:
June 2005
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Re: The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 13:40
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Yeah I was thinking about the 5 valve as well.
But why do people bother with the 20 valve? Is it true that it flows air better? Would this help with anything to do with the turbo?
I know for a fact that the 20 valve and the 4agze have the same con rods and crank and both have oil cooled pistons its just lacks forged pistons.
So why do people turbo charge 20 valves if a 4agze is musch easier? Would there be much difference between a turbo 20 valve or a 4agze?
All i'm saying is there must be a reason and I want to know that reason.
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Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
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Re: The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 13:49
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lots of ppl turbo their existing motors. meaning whatever they have in the car now they chuck a turbo on it. Be it 16V 4age or blacktop 20V's and anything inbetween.
you dont need to pull down these motors to run boost through them, provided they are healthy in the first place and boost and turning is keopt in save levels, there is no reason why you cant turbo it succesfully
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Location:
Melbourne
Registered:
June 2005
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Re: The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 13:57
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I know if you had a 20 valve or a 4agze currently in you car and you wanted to turbo charge it, you won't change the engine.
But lets say that you brought a austrlian spec ae86 sprinter with the 4A-C engine and you want to change it to a 4age turbo. You had to choose between a 20 valve or a 4agze turbo. Is there a big difference between a 20 valve turbo with 4agze pistons (or bottom end) and a 4agze turbo in performance and durability?
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I supported Toymods
Location:
Brisbane
Registered:
September 2004
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Location:
Toronto, Downtown
Registered:
September 2004
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Re: The Best 4AGE Hybrid Turbo?
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Wed, 29 June 2005 21:56
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20v heads on gze bottom ends seems like alot of hassle considering there is nothing ive heard that proves that its better for flow than a bigport head
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Location:
Adelaide
Registered:
January 2004
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Re: The Best 4AGE Hybrid Turbo?
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Mon, 04 July 2005 13:18
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I'd go for a 4A-GZE and turbo that. It's already built for boost and the standard ecu's can take 14psi.
They also run a compression of about 8.9:1 if i'm correct.
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: The Best 4AGE Hybrid Turbo?
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Mon, 04 July 2005 13:43
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| Revs wrote on Wed, 29 June 2005 23:23 |
c) 16 valve 4agze
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20v is more bling factor IMO.. 
you could turbo your exsisting engine with correct engine management etc. and have a reliable 4agte with good output. or even buy some 4agze pistons and put in your engine if you worried about the c/r and useing cast pistons.
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Location:
Toronto, Downtown
Registered:
September 2004
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Re: The Best 4AGE Hybrid Turbo?
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Mon, 04 July 2005 15:07
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| Lachie wrote on Mon, 04 July 2005 23:18 |
I'd go for a 4A-GZE and turbo that. It's already built for boost and the standard ecu's can take 14psi.
They also run a compression of about 8.9:1 if i'm correct.
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the map sensored ones are supposed to be 8.5:1 and the afm 8.0:1 i belive
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Location:
Toronto, Downtown
Registered:
September 2004
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: The Best 4AGE Hybrid Turbo?
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Mon, 04 July 2005 20:51
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| 4agte wrote on Tue, 05 July 2005 01:07 |
| Lachie wrote on Mon, 04 July 2005 23:18 |
I'd go for a 4A-GZE and turbo that. It's already built for boost and the standard ecu's can take 14psi.
They also run a compression of about 8.9:1 if i'm correct.
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the map sensored ones are supposed to be 8.5:1 and the afm 8.0:1 i belive
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he is right with 8.9:1 c/r. 
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Location:
sydney
Registered:
November 2003
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Re: The Best 4AGE Hybrid Turbo?
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Tue, 05 July 2005 07:13
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Here begins the age old debate...
Depending on the power you seek, just buy a gze (either series 1 or 2) and put a turbo on it.
From my experience a afm aw11 gze with a gt28 will get you around the 170rwkw mark. (with a better fuel system,ecu,manifolds etc of course)
For more power you will need a bigger turbo. Mine made 200+rwkw with a series 1 gze engine. Sort of puts to rest the whole "the gze with oil squirters is better" argument. 
Either way, good luck.
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Location:
Toronto, Downtown
Registered:
September 2004
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Re: The Best 4AGE Hybrid Turbo?
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Tue, 05 July 2005 09:19
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| fatmr2 wrote on Tue, 05 July 2005 17:13 |
Here begins the age old debate...
Depending on the power you seek, just buy a gze (either series 1 or 2) and put a turbo on it.
From my experience a afm aw11 gze with a gt28 will get you around the 170rwkw mark. (with a better fuel system,ecu,manifolds etc of course)
For more power you will need a bigger turbo. Mine made 200+rwkw with a series 1 gze engine. Sort of puts to rest the whole "the gze with oil squirters is better" argument.
Either way, good luck.
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well said
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Location:
Melbourne
Registered:
June 2005
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Re: The Best 4AGE Hybrid Turbo?
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Fri, 08 July 2005 03:52
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Ok Cool,
Thanks heaps for the info
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Banned by his request
Location:
moved to tamworth
Registered:
July 2002
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Re: The Best 4AGE Hybrid Turbo?
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Fri, 08 July 2005 06:22
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exept for the squirters bit?how do you work that out?. sqirters are better hence i wouldnt use a non sqirter block.little things like sqirters help the longevity of the motor.they help to disepate heat and lube the small ends.
4agze and get a gt28 or gt2535. a cheaper steam pipe manifold made up or a more expensive stainless one.a aftermaket computer and a good clutch.then have a blast.
mick
p.s the above turbos would be a hand full in an sx{torque steer across lanes}go smaller if in an sx or pure fun in a sprinter.
mick
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Location:
sydney
Registered:
November 2003
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Re: The Best 4AGE Hybrid Turbo?
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Sat, 09 July 2005 03:02
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| kingmick wrote on Fri, 08 July 2005 16:22 |
exept for the squirters bit?how do you work that out?. sqirters are better hence i wouldnt use a non sqirter block.little things like sqirters help the longevity of the motor.they help to disepate heat and lube the small ends.
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I never said they werent a good thing. I have heard many a time people say that the one with squirters will make more power. How exactly i dont know?
I got great results from the series 1 engine thats all i was saying.
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Banned by his request
Location:
moved to tamworth
Registered:
July 2002
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Re: The Best 4AGE Hybrid Turbo?
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Sat, 09 July 2005 04:52
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if they believe squirts make more power, send them over to the post about the fuel saver devices and ill sell them one of MICKS BLACK BOXES,lol that will fix them.
mick
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