2.2 stroker kit or a bigger bore?

[celfatic]

I want to know the pros and cons of each. I know that both of them are expensive but as of horsepower how much will each one roughly gain? I havent check compression but i feel like one of the pistons is miss firing.

[ToyotaTechGeek]

hmmm, well, this is a compound question deserving of more concise questioning. first of all, if you merely bore a cylinder, it doesn't necessarily 'give' you anything other than a fresh crosshatch when you use a standard or standard overbore piston. if you bore a cylinder then add a higher compression piston, then you have raised compression, still haven't really added any 'volume'. you stroke will more determine that aspect. now, if you stroke and engine, then you're looking (oftentimes) at a change in volume (and i am using layman's terms here) and then gains can be found with the right combination of other parts. also with just the overbore, then one also has to consider the loss of compression due to the entire quench area being changed (no matter how small) and the 'gain' is more seen as a loss due to having to make compensation(s) in other areas.

i assume you're discussing the 3SGT-E, but it applies to most any internal gasoline combustion engine.

[SCEPTER300RR]

would the 5sgte that justin is using be called a stroker kit?

[Pineapple]

You'll need a stroker crank which is costly. Also it'll limit the engine's ability to rev. Smaller stroke = higher rev.
First you need to find out how much power you're looking at. Then we can see what you need to do.

[SpeedballTrix]

Stroker:
~2200cc final displacement.
~15-25 more ft lbs.
~12-20 more hp.
Flatter curves.
Possible loss of a few hundred RPMs at extreme engine speed.
Weaker "hold" at high engine speed.

Overbore:
~2100cc final dispalcement (can be significantly more or less)
Gains depend on amount bored.
~5-10 more ft lbs.
~15-25 more hp.
Peakier curves.
Definate gain of a few hundred rpms at extreme engine speed.
Stronger "hold" at high engine speed.

Stroking your engine will make the car accelerate more smoothly, which can be better if you have trouble keeping the car in line. This is especially true when changing brake bias or weight balance; or any time you add a good amount of power.

Boring your engine will make the car accelerate edgier. This will make the car harder to control but will result in better track times as compared to a stroked-engined vehicle.

As for money, I think both would be about the same cost.
With boring, if you go out alot you -might- need to upgrade your valvetrain, but it's not likely unless you go really far out.