help Identifying what motor I have

[Dexter]

Hi guys, I just need help identifying what 4ag I have. I was told that it was a 4agze but the charger was removed to to p plater laws .

From what I know it's a 7 rib block with the oil squirters, ae92 100kw ecu/ wiring , no tvis, oil return to sump, supercharger rocket covers and is sluggish under 5000rpm but hauls butt from 5000 - 7000rpm

I'm sure it's not a ze but was wondering if there is anyway on telling what it really is ?

[timbo]

I guess it depends on what pistons are inside. A normal smallport will have high top pistons for more compression and the ZE will be dished.

edit: What car is it in and what intake manifold does it have? If the oilk breather is connected to the head then you have a smallport block and head.

[Dexter]

The Manifold has been cut and welded and the oil breather runs from the rocket cover to the manifold .

[Matt]

Comp test it gze should be slightly lower than a smallport. Also grab the part number off the ecu but it could have been swapped also

[Rice86]

Well if its NOT a ZE motor, the 100kw 4age should pull from 3000 to redline without any dramas..if your saying its sluggish until 5000 then most likely is a ZE..

i know this isnt the BEST way to tell, but it should give you a rough idea what the engine is, no bigport or small port GE will feel sluggish up to 5000.. they all should pick up power at 3000-3500 already.

[Sam-Q]

Looking at the sticker on the ecu is a smart move, if you want no doubt about what you have then one of those camera things on a flexable shaft- endascope? to see if the pistons have a dish in them.

Also pictures go a long way

[Dexter]

Like I said it has a ae92 100kw ecu 100kw 4 wire dizzy.

The guy I got it from did say it was a hybrid engine with parts used from other 4age's

I was just hoping maybe the engine number or something could identify the the bottom end was.

Thanks for all your help guys

[Rice86]

lol nah that wont help, all 4A blocks just have 4A on it.. maybe chase up the engine number in RTA and maybe it might show as 4AGE or 4AGZE...? just a maybe

[Dexter]

That's a good idea I'll chase that up with the rta and see how I go.

[Matt]

The engine number won't really tell you what it is as gzes are still 4axxxxxx etc.

Sounds like a bitser motor, easiest way is to use a borescope ie. camera down the spark plugs to inspect the pistons. The compression test results will also give half a clue, but won't be conclusive.

If you are out my way i've got a compression tester you can throw on it.