4A-GE first experience
04-24-2012, 12:55 PM
Post: #1
4A-GE first experience
Greetings to all!
I need help of the experienced 4A-GE builders.

My story...
Arriving at the miniDH event in the nearby town of Krivoy Rog I accidentally found and bought for only $250 stripped down and not a complete 4A-GE.

[Image: AEU86 AE86 - 4A-GE first experience][Image: AEU86 AE86 - 4A-GE first experience][Image: AEU86 AE86 - 4A-GE first experience]

For my track-day project http://ae70.blogspot.com/

My plans for the motor are as follows:

* Reliability consisting of low-cost OEM parts;
* Horizontal carbs. (Weber or Dellorto);
* MSD ignition;
* and so on.

My questions at this stage consists in the following:

A. What kind of pistons were in it?

[Image: AEU86 AE86 - 4A-GE first experience]
[Image: AEU86 AE86 - 4A-GE first experience]
[Image: AEU86 AE86 - 4A-GE first experience]
[Image: AEU86 AE86 - 4A-GE first experience]

B. With piston size - 81.65 mm and diameter of the cylinder - 82.10 mm pistons what new I need to get?

[Image: AEU86 AE86 - 4A-GE first experience]
[Image: AEU86 AE86 - 4A-GE first experience]

Does it make sense to build the engine on this block?
Or is it better find a new 4A block?


I would be very grateful and appreciate any advice.

[Image: AEU86 AE86 - 4A-GE first experience]
http://ae70.blogspot.com/ & http://drft.io.ua/
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04-26-2012, 08:59 PM
Post: #2
4A-GE first experience
DRFT Wrote:My questions at this stage consists in the following:

A. What kind of pistons were in it?


B. With piston size - 81.65 mm and diameter of the cylinder - 82.10 mm pistons what new I need to get?

[Image: AEU86 AE86 - 4A-GE first experience]
[Image: AEU86 AE86 - 4A-GE first experience]

Does it make sense to build the engine on this block?
Or is it better find a new 4A block?


I would be very grateful and appreciate any advice.

a) Those are 7AFE pistons....

[Image: AEU86 AE86 - 4A-GE first experience]

b) get 82mm diameter pistons

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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05-03-2012, 04:28 PM
Post: #3
4A-GE first experience
Thanx.
I'm thinking about new pistons...

[Image: AEU86 AE86 - 4A-GE first experience]
http://ae70.blogspot.com/ & http://drft.io.ua/
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05-03-2012, 05:40 PM
Post: #4
4A-GE first experience
My next question is OIL PAN.

How to increase it's capacity and do it right???

1.
[Image: AEU86 AE86 - 4A-GE first experience]

2.
[Image: AEU86 AE86 - 4A-GE first experience]

3.
[Image: AEU86 AE86 - 4A-GE first experience]

[Image: AEU86 AE86 - 4A-GE first experience]
http://ae70.blogspot.com/ & http://drft.io.ua/
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05-03-2012, 09:18 PM
Post: #5
4A-GE first experience
#1 is my design Respect! For more details about the overall design - http://forums.club4ag.com/zerothread?id=...tid=943002


#2 is a common Japanese type, it has added volume on one side only so it can be used in fwd applications

#3 I've not seen before

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
Find all posts by this user
05-03-2012, 09:58 PM
Post: #6
4A-GE first experience
Hmm... never seen this before.
Why to increase oil capacity ?
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05-04-2012, 12:26 AM
Post: #7
4A-GE first experience
oldeskewltoy Wrote:#1 is my design Respect! For more details about the overall design - http://forums.club4ag.com/zerothread?id=...tid=943002


#2 is a common Japanese type, it has added volume on one side only so it can be used in fwd applications

#3 I've not seen before

Cool! I didn't know that you designed it... Thumbs up!

I put it first because it is easiest to implement and to me it seemed more reliable. Especially in the lateral g-forces in cornering.

I'm just not sure about the added volume ... it's adding more than 1 liter of oil or less?

[Image: AEU86 AE86 - 4A-GE first experience]
http://ae70.blogspot.com/ & http://drft.io.ua/
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05-04-2012, 01:51 AM
Post: #8
4A-GE first experience
Uzelac Wrote:Hmm... never seen this before.
Why to increase oil capacity ?


A few advantages....
1) more oil = more capability to absorb heat, and holds its viscosity better

2) oil drainback on 4AG largeport is ONLY on exhaust side of engine, during long hard left hand cornering, the oil can "pack" the head... leaving the pan with a potential for low oil... extra quart in pan allows for some security


DRFT Wrote:I'm just not sure about the added volume ... it's adding more than 1 liter of oil or less?

Each wedge section holds 2 cups... 4 cups in US measure = 1 quart. Current rwd 4AGE pan is 4 quart, so this would increase volume to 5 quart

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
Find all posts by this user


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