Steeda not a technical source?? That's the most LAME excuse ever. So I guess their cars have no technical modifications at all I take it??

 

I never said that, now did I. You took my statement out of context. Keyword in my statement is "me". Thank you for trying to be a smartass, but your attempt was LAME.

 

I don’t usually like to say something like this in a forum but you sir are grossly misinformed. The pistons will be hypereutectic and not problem with low boost applications just like the current 2 valve. As a matter of fact kenne bell has been working on a supercharger for the 3 valve GT already.
http://www.kennebell.net/superchargers/sup...er-selector.htm

This is how so many inaccurate internet rumors get started. There is 0% possibility of this being true. Anyone buying into this pure rumor, propagating it, or passing it on as anything more than a joke is not informed.

This brings back memories of the sub $20,000 2005 V8 stang that so many people bought into.

 

Also from brothers performance one of the pargest mustang aftermarket companies

"The lightweight hypereutectic aluminum pistons have short skirts, with an anti-friction coating that assures more of the power is delivered to Mustang's rear wheels and less is lost to friction. High-tension piston rings provide better cylinder sealing for long-term durability and low oil consumption. The connecting rods use Ford's cracked powdered metal manufacturing technique for precise fit. Five main bearings with cross-bolted main bearing caps further ensure durability and reduce flex. A tray attached to the main bearing caps baffles oil flow in the pan, reducing aeration and assuring proper oil feed to the crankshaft during the kind of sustained lateral maneuvers encountered in performance driving."

http://www.brothersperformance.com/newslet...tang/power.html

 

You people are simply amazing! :bang: Did anyone actually read the quote or did you just read the title (which I have edited so as not miss lead anyone else).

Even you said, "low boost" in your post and why is that? Because Kenne Bell knows if you put a decent amount of "boost" on that piston you will do one of two things, blow a hole in it or break a ringland. Why do you think there aren't any "high boost" options for the 96-98 Cobra's? Same problem. Bring the 03 Cobra shortblock into the mix with Forged pistons and this changes.

I never said you could not supercharge it (maybe my title was misleading), but since most of you are "convinced" that you can throw "high" boost at a new Mustang, be my guest.

 

This means what? That you can put "high" boost on those pistons? Explain to me why your 03 Cobra, Lightnings, and Ford GT's have Forged pistons, please. I would like to know.

 

You title says you "can not" supercharge your GT, not use only low boost. The article you linked to also said "the hypereutectic pistons won't survive any boost" The operative word being ANY. Thats not misleading thats outright misinformation.

Heck any GT of the past decade hasnt been able to withstand high boost for long. Is this some kind of revelation that the GT isnt coming with forged pistons? GT's have had hypereutectic pistons for years and years.

The GT, just like past GT's, can withstand a moderate amount of boost, which means it can be supercharged.

Even if the pistons were forged you couldnt add a decent amount of boost due to the compression ratio. Thats why the 03/04 cobras, which has forged pistons, also has a low CR ratio.

 

"misleading", absolutely.

You guys can keep arguing on how much boost it can take, but it will be possible to supercharge it.

 

Title was edited so as not to cause anymore confusion.

Again, if you bothered to actually read any of the posts the you would have absorbed "ringlands have moved closer to the top of the piston" not "GT's have hypercast pistons". Then you add a notch for the 3rd piston and you create a stress point that will surely break a whole lot quicker than the same piston with a fatter ringland.

Another "fallacy", you can run high boost with a high CR, you just can't have that much spark advance. I have 9.85:1 CR on my motor, most people run well into 16#'s of boost with that combo, but you know what the weak point is, ringlands. How about a stock longblock 02 GT with a 12# Kenne Bell on it? He killed the motor and block on the first pass, ringland on #6 broke.

 

"misleading", absolutely.

You guys can keep arguing on how much boost it can take, but it will be possible to supercharge it. [/b][/quote]
Dr. Iven nailed it:

Ford's just being counter-productive about it.

 

We have changed the title from cant, to its dangerous, to those of you that want to. To arguing about high boost levels with people who never brought boost levels up. No factory 4.6 gt has been able to withstand high boost levels for long, everyone knows the pistons and rods dont like the abuse.

So we are stuck with low boost application just like the 96-2004 2 valve. Nothing really new. Everyone seemed to be happy with that. The 2005 can be supercharged. The hardcore guys will replace the pistons just like the pre 05 guys. Rejoice and be happy this whole thread was a waste.

 

You're welcome.

Remember kids, only you can prevent stupid reply's. Please read and understand before commenting.

 

BTW, You can't supercharge a Lightning if its only got one fuel pump relay working, unless you like your 5.4 with a view, and in pieces!!!! Nobody has been able to supercharge any Ford motor since they started using the hypereutetic pistons and powdered metal rods('92, i think) unless you keep the boost moderate (10 psi or so) and really, really watch detonation, i.e., don't have a fuel pump relay take a vacation just before the upshift to 3rd under heavy acceleration!!

 

I have to raise the on that one. As Saleen will have a blower, and KB will have one soon!!

 

This goes against EVERY the Mustang is about .... A inexpensive car that you can mod the heck out of .... Why would Ford do something as stupid as creating an engine that would blow up on the slightest tune, let alone a SC version.

The aftermarket wouldn't allow it ..... And no, I'm not talking about doing a complete swap out of the bottom end either.

 

I really want to know what the right answer is, bacause "if" this is true, than that really is BS. Changing pistons is serious money, and having to do it on a brand new engine..........would be a waste.

I just can't believe Ford would do something like this to such a highly mod-able car, but "if" they did......shame on them, and I guess we are all F'd.

I will wait, though, to pass judgement until I see more "Technical" info come out.

 

Assume the info is true. Big deal. The 2V motors aren't hugely strong, and some have failed with very low boost and good tunes. Ford has designed this engine to be naturally aspirated. If you choose to force air into it, that's your choice, and it's your money. I think the whole point is that Ford is not going out of their way to give us a boost-ready motor from the factory. OF COURSE YOU CAN MODIFY IT TO ACCEPT BOOST. It just looks like you *might* have to change out the internals if you want to get serious about it. But you should do that anyway...

Dave

 

John,

This is the best tidbit of information out of this entire thread, so I wanted to quote you. John is absolutely correct. Everyone who has actual working experience with blown factory short blocks is aware of this. If you've never put a blower on a car and tuned it, then you only know half the story. The guys who run big boost with stock pistons, stock rods, and stock fuel systems eventually pay the piper. Thanks for pointing this out John.

I have to raise the BS flag on the cast iron lands in an aluminum piston.


I'm a mechanical engineer with experience in casting parts. There are several reasons why you couldn't cast 2 dis-similar metals together, but I'll just name one.

1.) Melting point: Aluminum alloys have a much lower melting point than cast-iron or cast-steel. The aluminum will solidify much sooner than the ferrous metal.

It could possibly be a cast-iron part pressed onto a cast aluminum part, but I highly doubt it. The extra machining would considerably add to the cost, plus the density of iron or steel makes it an undesirable rotating assembly part.

I think if there was a color contrast that looked like cast-iron, that it is most likely a coating for thermal or anti-wear.

If you have access to this person, ask them to put a magnet on it.

 

That seems like a good bet -- it's probably Teflon, I'm guessing.

 

This gripe was used by lightning owners over and over again. If you want a car with a built shortblock, buy a 2003-2004 Cobra. No other factory 4.6L can take a massive amount of boost/N20.

The biggest problem is the latest mod motors have 10.0+ compression ratios. The cylinder pressure is exponentially higher with 10.0+, than a blower friendly 8.0:1.