Ford decided to skip the aluminum block in favor of the iron block for use with the roots S/Cs even at the cost of adding a few pounds. Word got around prior to the '03 Cobra release that aluminum block engines were blowing left and right on test mules. I am skeptical and wondering, if Ford didn't find a way to make it work, what will Roush, Saleen, and Steeda have to do different not only to make it work, but for it to last.

 

Well, Saleen uses a screw-type supercharger on their vehicles unlike the SVT Cobra and the Roush editions. Steeda, I'm not sure of the method. So, I'm not sure where you are going with this one

 

Um, the SVT Cobra and Roush are screw types as well.

 

Roots

 

Well excuse me. I still don't understand what Bullitt is asking.

 

So this is a screw type as well?

 

I see that people are looking but not responding. I'm not trying to start fights and point fingers. IF I am that ignorant, then so be it. I'm just trying to get my information right before I speak that way I don't look stupid. But if no one will verify anything then here we all shall sit twiddling our thumbs waiting......

 

well mr-mstng if you check the specs of the 04 cobra at www.svt.ford.com it lists the induction system as an "Eaton Corp. Generation IV ROOTS-type supercharger w/ water-to-air intercooler." :scratch:

Where, mr-mstng, is your evidence of a screw-type supercharger. Please, please show me.

 

I too am interested in the original question of this thread. What kind of durability can you expect when supercharging the aluminum block engine in the 05? Will it stand up to the extra stress? How much boost is too much?

I could probably convince myself to part with the $$$ to supercharge, but don't want to blow the engine.

I know a lot of people supercharged their aluminum block Cobras, but never heard how durable this set up was.

 

Good question George. I'm pretty interested in the answer as well.

 

This all depends on the amount of cylinder pressure (i.e. horpower) one will generate with their choice of forced induction.

For those looking to go to the extreme 500rwhp+ you might want to consider swapping to an iron block.

most blocks ventilate because of a snapped rod. aluminum cylinders can warp under the high pressure and heat, causing piston rings to lose their seal, assuming the rotating assembly holds tight. it's just a tough thing to generalize. Ford went with the iron blocks for warranty insurance purposes, and knowing what owners would do to them. change pulleys, chip the pcm, change blowers. etc...

most shouldn't have a problem* but i take no responsibility for this statement. haha