I toasted the steel flywheel in this pic. It happened after hitting the 150 shot. So my question is this would an aluminum flywheel actually be stronger, or would it flex more than said steel one.

 

The ring gear would have just flew off, you are lucky it wasn't aluminum.

In reality, you can not say that "a" aluminum flywheel is stronger than a steal flywheel. There are too many varibles. Steel is more likely to crack from heat stress which can cause it to come apart but with better design, steel alloys and fabrication practices they can be made extremly strong.

 

ive seen problems with aluminum flywheels losing ring gears and not keeping torque to the crank, but that's about it.

i run a chromoly jun flywheel in my car, its a bit harder to launch , but its definately worth it.

i think youre in more trouble if you overheat an aluminum flywheel than a steel, but as long as you dont slip the clutch too bad on either one , you should be fine.

 

I have seen more troubles with Jun flywheels than any other aftermarket flywheel. Hell I don't even think they make them for DSMs anymore due to the problems. Most aluminum Flywheels I have seen have a bolt on steal ring gear. I can see if the gear is pressed on that it could come off, but if it is bolted down with locktite or good lock washer I really doubt it will come off.

 

CHROMOLLLLLLLLLLLLLYYYYYYYYYYYYYYYYYYYY