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Old 07-03-2006, 02:16 PM   #1 (permalink)
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4age 20valve questions

I am considering fitting a 20valve 4age in my 97 prizm, the questions im unsure of is the oil pump on my stock prizm has a crank angle sensor, will that pump go directly on the 20valve crank. Also, with the intake, the 20 valve is a AFM engine, and the prizm is a MAP engine, can the intake from the prizm bolt up on the 20valve to be able to utilize the stock MAP sensor. Any help on this would be greatly appreciated
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Old 07-03-2006, 05:46 PM   #2 (permalink)
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Never seen a prizm so I can't be sure, but I would say the oil pump won't fit the 4age.
Why would you want to change the oil pump anyway, the 20v will come with one.

You can run a silvertop with a map setup, but not with the stock ECU and not with the 4/5/7afe ECU, a blacktop ecu is the only factory ECU that will run a map 20v properly.

The easiest way is to get a stock loom and ECU, or get a stand alone ECU.
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Old 07-03-2006, 06:51 PM   #3 (permalink)
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The reason for the oil pump change is that the stock 4afe(prizm) has a crank angle sensor in the oil pump housing, im assuming the 20v doesnt have this. my question about the crank is there are 4 valley grooves on the crank that the oil pump slides over, this is what turns the pump, so im wondering if the cranks are the same on both motors where the oil pump slides over the crank.
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Old 07-03-2006, 10:17 PM   #4 (permalink)
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What ECU do you plan to use??

I can't really see where your going with this.
Why would you want to put any 4afe parts onto the 20v?
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Last edited by punter; 07-03-2006 at 10:53 PM.
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Old 07-03-2006, 10:50 PM   #5 (permalink)
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You will only need that sensor if you are attempting to run the 20V on the 4afe computer, basically. Sense that is impossible... well, you see where this is going I think. And no Punter, I'm not stalking you lol.
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Old 07-05-2006, 04:09 PM   #6 (permalink)
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Ah, see thats what i wasnt grasping. so basically to run the 20v, ill need the wiring harness and 20v ecu right? Or could i just replace the stock Ecu with a stand alone. But, the next issue is wether it will pass DeQ.
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Old 07-06-2006, 09:35 AM   #7 (permalink)
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Does the 97 Prizm have a 4afe? Thought it had a 7afe or 1zz...?
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Old 07-06-2006, 11:08 AM   #8 (permalink)
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Quote:
Originally Posted by aaron7
Does the 97 Prizm have a 4afe? Thought it had a 7afe or 1zz...?
most have the 4afe, some of them have the 7afe
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Old 07-06-2006, 10:33 PM   #9 (permalink)
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Quote:
Originally Posted by woodenhead72
Ah, see thats what i wasnt grasping. so basically to run the 20v, ill need the wiring harness and 20v ecu right? Or could i just replace the stock Ecu with a stand alone. But, the next issue is wether it will pass DeQ.
Yup standard 20v ECU or tunable stand alone unit.

Is DeQ is an emissions test??
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Old 07-07-2006, 10:59 AM   #10 (permalink)
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Quote:
Originally Posted by punter
Yup standard 20v ECU or tunable stand alone unit.

Is DeQ is an emissions test??
Yep, DeQ is Oregons emissions test
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