Adding power when you're ready for it is a good thing.

Much of the power difference is attributed to tune. Especially since the FED has a higher redline. I have a 2006 Corolla 1ZZ-FE that was rated at 130HP in its original car and you'd never be able to tell the difference.

As for identifying marks, the VIN plate should give you all the info.

 

Pretty sure Celica and Mr2 1zz-fed's were the only one to feature the axle bearing carrier bracket. Other 1zz-fe's did not have the bracket or the threaded holes in the block for mounting it. Of course FE's that were modified to swap into a Spyder would have the holes drilled and threaded. But there are other ways of identifying these. If you had just bothered to search you would have found this:
http://www.spyderchat.com/forums/showthread.php?56252-STR-1ZZ-Motor-Info

Personally I don't recommend searching, you can always count on someone else to do it for you, so practically speaking it is a waste of time.

 

My thanks to everyone who has contributed thus far. I am not "new" per say to this forum and I apologize for not looking close enough at the search results. I actually spent a good deal of time mulling over on google to figure out the differences and the thread MerryFrankster provided solved most if not all of my issues. I guess I'm going to have a fun time looking for the perfect engine to drop in.

 

Axle carrier and the valve sizing are the main mechanical differences. THe engine plate can be used to differentiate, but you have to call toyota to get it looked up. If the sticker is worn off there's no way to tell, unless there's markings on the head I'm not aware of.

 

There's one error in Frankster's link. The conrods are the same across all 1ZZs, part numbers match.

 

It's my understanding that the rods are different between the Fe and fed variants. The Fe has powdered metal rods, whereas the fed has lightweight cast rods. Drilled holes for the passenger carrier bearing (fed) will be the obvious identifier between the two.

 

The original part numbers for the rods are the same between the MR2, Celica, and Corolla. Check the part numbers for the connecting rod for a 2000 MR2 and a 2000 Corolla S, they're the same.

 

European / Japanese / far east market 1.4L (4zz-fe), 1.6L (3zz-fe) and 1.8L (1zz-fe) short blocks all have drilled holes for the passenger carrier bearing even if these engines are fitted to Corolla, Avensis, Corolla Verso or RAV4 and they do not use the support bracket at all.

So the drilled holes won’t be the obvious identifier between the two (expect for the USA market production)

The short block of 1.4L (4zz-fe), 1.6L (3zz-fe) and 1.8L (1zz-fe) are identical and by just replacing the rotating assembly you can convert one to the other mechanics wise. Fuel and ECU of course needs to be handled.

1zz-fe engines made for Celica T23 and MR2 mk3 have a larger intake valve (+1mm) cylinder head compared to 1zz-fe engines for Corolla, Corolla Verso, Avensis, RAV4 or far east Corolla Altis variants. Plus a different ECU to run the larger valves properly. This is the reason for 129/130HP (normal 1zz) versus 143HP (Celica /MR2 1zz).

We have made many conversions and there was never a difference for Celica / MR2 conrods (size, design, weight) even their part numbers are exactly the same.

 

1zz-fe engines made for Celica T23 and MR2 mk3 have a larger intake valve (+1mm) cylinder head compared to 1zz-fe engines for Corolla, Corolla Verso, Avensis, RAV4 or far east Corolla Altis variants.

Would you know what JDM cars have the 1zz with the larger intake valves?

I have access to JDM market and want to buy a 1zz to rebuild.

TIA

 

You want a spoked pulley at the bottom ( the big one ). This indicates you have a 2003+ engine.

There is a great thread somewhere on this but can't find it now. It has lots of pictures.