4age Options

[Celicam8]

I am looking around and planning my to buy my 4age or 4agze and I was wondering if rebuild kits are worth it

1.6L 90/91 Corolla GTS
4AGE 16 valve
DOHC
Fuel Inj.
$327.06 EKTO30LM
Major Engine Kit: contains complete gasket set, set of pistons and rings, main bearings, rod bearings, thrust washers, timing belt, balance shaft bearings (if applicable), and a set of expansion plugs (does not contain camshaft, timing kit or oil pump). Pistons & Rings: Std., .020, .040. Bearings: Std., 10, 20, 30.
$401.48 EKTO30LG
Gold Engine Kit: (Major kit as above) with oil pump
$228.89 EKTO30LR
Re-Ring Kit: contains complete gasket set, main bearings, rod bearings, thrust washers (if applicable) and a ring set. Rings: Std., .020, .040.

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I'm not exactly sure where I'd get these parts and at what cost... Also, will the 4age kit work on a 4agze, only difference is supercharger... I cant see that being a problem, but worth asking

[Kwanza26]

The question of whether a rebuild kit is worth it is something only you can answer for yourself and would depend entirely on what you want out of a motor. If you're asking for an opinion, well, without considering the additional cost and time of rebuilding, it's always a good thing to do, but if time/money is a concern, look over the motor and decide what is and isn't necessary in terms of rebuilding/refreshing.

Anyway, there are slight differences between the several different 4AGE motors, mainly the size of the crank and rods during the different production phases. The kits you list (90-91 Corolla) will have different pistons from all other 4AGE models as well as the 4AGZE. The 4AGZE will have different pistons also, but the main/rod bearings will be the same between all models 88+. The older models prior to 88 will have different crank mains and rod journals. Other differences are in the piston design, which coincide with the crank/rod update, which utilize a full float piston pin as opposed to the older press fit pin.