First off any help is appreciated. I'm looking into buying an mr2 spyder come december and I really want to have around 250~300whp with a turbo application. My only question is 1zz or 2zz? I've heard the 1zz has a better turbo application even on stock internals but is it better than swapping in the 2zz and turboing? also will the 5speed tranny be able to hold that much power or is there another tranny out there that bolts up to hold that much power?

E153 trans, either engine can make that power but not on stock parts.

I've seen mr2s hit 250whp on stock internals, they have vids of it on youtube id only push around 12psi, but yea I'd probably switch out a lot before i turboed but which engine is better for a turbo application?

I'd skip the 2zz and simply turbo the 1zz that's already in the car for now. I'm sure you've already looked into it if you're considering a 2zz swap for the Spyder, but with that said I'll add my 2 cents since I was in the same boat. Putting the 2zz into it is pretty straight forward but does need a handful of custom parts that I'm sure you're aware of; the swap header, the shifter shaft needs modified (if you swap in the C60 6-speed transmission, which I certainly hope you do), engine mount, etc. Monkey Wrench Racing sells all the swap parts you need (along with a couple members on spyderchat) but they're a little over $1,000 last I checked, plus the cost of the motor , trans, and ecu. For that ~$3,000-3500 figuring you do all the work yourself, I'd sooner buy the kit MWR sells for the 1zz and be done with it. Don't get me wrong, the 2zz is a great engine but unless you're planning to ALSO build the engine, it just makes more sense to turbo the 1zz first. For practically the same price you're going to get nearly 100hp more with their turbo kit on the 1zz.

Swapping the 2zz into the car makes it more fun, but only so much. Whether it's the 1zz or 2zz, they still don't make a whole lot of torque. FI, whether it's the Rotrex supercharger WEB3.0 pioneered, or a custom turbo setup, is going to make that car incredibly fun to drive. Get all the turbo parts first, then swap the 2zz later on if you want to. Oh, this is after you make sure your Spyder's 1zz still has good piston rings.

Just my 2 cents.

And one other thing. If you do decide to buy 2zz, get it from the Vibe GT or Matrix XRS, 9 times out of 10 it'll be cheaper than the Celica GTS.

I dunno about 2zz, but I have seen quite a few (and this could be due to how the owner's maintained and drove their MR-S) of those needing an engine rebuild at 100-120k miles, and sometimes even 90k. With that said, I would do some research into the engines themselves and really sit on it. We have a MR-S in town by a shop who is sponsored by Godspeed and it is pushing 450whp. Not exactly sure about it's set up, as I haven't really gotten a chance to see it myself, but I have seen their RB26 motors and they are the only ones in town with cars sporting those locally.

Anyways... From a review of the MR-S, it seems that the stock engine is fairly weak and docs points from making MR-S a more sports car over the Celica GT-S, simply because of the power of the motor. If it were me, I would drop that 2ZZ.

2gr-fe. 265whp with intake and exhaust.

I guess I need to read up more on the 2 engines, look at celica gts turbo builds and whatnot, thanks for the help guys

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Hell yeah! But that would need fab work to fit in the MR-S, no?

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newcelica can help and talk to MWR, they build some nice engines.

Turbo = 1zz
N/A = 2zz

My co-worker's cousin has 2zz swapped mr-s and he says that thing flies lol.

the 2zz swap would be awesome, but for the same price you can have more power on the stock motor

wheres smaay when you need him?
IIRC he had/has a nasty turbo 7th gen, IIRC its a 2zz, although i could be wrong.

My 2zz also has 177k miles on it no probs. It's actually a solid motor if you're not stupid with it. (Read: Take care of it)