Those of you wanting to supercharge your 2005 GT
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The Man... keeping you down.


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From: Stealin' ur internetz
Im quoting (cut/copy/and pasting this) and not linking because its in a protected forum. But I highly trust this source for their information.
So today I had the distinguished honor to disassemble a 2005 GT crate engine. Now, while in the past, I have disagreed with Ford and their decisions regarding mod motors. However, I regret to inform everybody that the new 2005 GT cannot be effectively supercharged:
In an effort to increase the combustion efficiency and reduce emissions, Ford has created a piston that will not handle ANY boost. The top ring is less than .100 inches from the top of the piston in 2 areas, and .200 or so in other areas. Ford has also used a cast iron ring land, which is then cast into the piston. I'm not entirely sure of the process they use, but the piston itself is made of 2 materials.
So because of the very small ringlands, the hypereutectic pistons won't survive any boost, let alone any error in N/A tuning, and even if the pistons survived the tune, the increased cylinder temps would cause the dissimilar materials to separate.
So today I had the distinguished honor to disassemble a 2005 GT crate engine. Now, while in the past, I have disagreed with Ford and their decisions regarding mod motors. However, I regret to inform everybody that the new 2005 GT cannot be effectively supercharged:
In an effort to increase the combustion efficiency and reduce emissions, Ford has created a piston that will not handle ANY boost. The top ring is less than .100 inches from the top of the piston in 2 areas, and .200 or so in other areas. Ford has also used a cast iron ring land, which is then cast into the piston. I'm not entirely sure of the process they use, but the piston itself is made of 2 materials.
So because of the very small ringlands, the hypereutectic pistons won't survive any boost, let alone any error in N/A tuning, and even if the pistons survived the tune, the increased cylinder temps would cause the dissimilar materials to separate.
Originally posted by bullittman68@October 18, 2004, 11:18 AM
Out of everything Ford says about owners modding their cars, they wouldn't have an engine that couldn't be modified.
Out of everything Ford says about owners modding their cars, they wouldn't have an engine that couldn't be modified.
Originally posted by Grantsdale@October 18, 2004, 9:14 AM
Information is incorrect. The 5.4l version of the engine can be supercharged, so there is no reason why this version cannot.
Information is incorrect. The 5.4l version of the engine can be supercharged, so there is no reason why this version cannot.
Jeff Dan
Bishop Sales Ltd.
1430 Rupert Street, North Vancouver
BC Canada V7J IE9
Tel. 1-866-867-8324 [ toll free anytime]
Home website: http://www.bishopsales.com
Email......... jeff@bishops.com
Jeff Dan, from Steeda and I have been communicating the last couple of days. He just emailed me.
He tells me that there is a supercharged version in the works!
He also tells me that there will be 2 wings to choose from, 1 low mount, 1 high mount!
You can also have your car built anyway you'd like!
According to Jeff,
87 Octane for the 350 horse
91 Octane should be run for the supercharged version!
Jeff said he will be at SEMA to answer any and all questions!
You can also email him!
Originally posted by bullittman68@October 18, 2004, 9:18 AM
Out of everything Ford says about owners modding their cars, they wouldn't have an engine that couldn't be modified.
Out of everything Ford says about owners modding their cars, they wouldn't have an engine that couldn't be modified.
Originally posted by thegoalie+October 18, 2004, 10:26 AM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (thegoalie @ October 18, 2004, 10:26 AM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-bullittman68@October 18, 2004, 9:18 AM
Out of everything Ford says about owners modding their cars, they wouldn't have an engine that couldn't be modified.
Out of everything Ford says about owners modding their cars, they wouldn't have an engine that couldn't be modified.
I demanded it.
Roush has plans for a S/C'd car in about 2 years. I suspect pistons are from Mahle (a Ford OE supplier and the guys who pioneered aluminum pistons, not to mention they make freak'n awesome aftermarket pistons) so I'm sure they have thier foo down pat when it comes to composite piston design if that is in fact true. Not knowing the reasons why thye might have done this, it may be a weight/strength issue.
And Ford also said that we have a solid rear axle because enthusiasts demanded it
Yep, glad they listened to me, god bless those cheap **** bean counters.
And Ford also said that we have a solid rear axle because enthusiasts demanded it
Yep, glad they listened to me, god bless those cheap **** bean counters.
If they can supercharge a Mini or even a Civic, they can find a way to supercharge the Mustang GT.
Thanks for the info, Sendero!
Ford also said we have a solid rear axle because the cost of production would have priced the Mustang GT out of its market. I'd rather have a high-production, great handling GT than an extinct, slightly better handling GT.
Thanks for the info, Sendero!
Ford also said we have a solid rear axle because the cost of production would have priced the Mustang GT out of its market. I'd rather have a high-production, great handling GT than an extinct, slightly better handling GT.
Thread Starter
The Man... keeping you down.


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From: Stealin' ur internetz
I am guessing most of you do not own/drive/tune any boosted vehicles. Anybody who has ever modified a 96-98 Cobra are very aware of the ringland issue as most of us break the ringlands on the #7 or #8 piston. Again, for those who didn't read it he was referring to the GT engine not the Ford GT 5.4L engine which uses different piston altogether and my source is not from Ford. This is from an independant tuner which does a great deal of Ford "extreme" performance builds.
Sure, you can supercharge it, but don't expect it to last long. I won't even say "I told you so".
Sure, you can supercharge it, but don't expect it to last long. I won't even say "I told you so".
Thread Starter
The Man... keeping you down.


Joined: August 15, 2004
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From: Stealin' ur internetz
Originally posted by Grantsdale@October 18, 2004, 12:32 PM
The GT engine and its 5.4L cousin are the same engine. Same setup. If its true thats one thing, but every indication is that it is false.
The GT engine and its 5.4L cousin are the same engine. Same setup. If its true thats one thing, but every indication is that it is false.
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The Man... keeping you down.


Joined: August 15, 2004
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From: Stealin' ur internetz
Originally posted by Grantsdale@October 18, 2004, 12:37 PM
Call steeda and ask them, they would be able to give you a better answer than me ... I don't know ... all I know is that your information is more than likely incorrect.
Call steeda and ask them, they would be able to give you a better answer than me ... I don't know ... all I know is that your information is more than likely incorrect.
As for the "all I know is that your information is more than likely incorrect" statement, you have yet to provide any technical information to say otherwise.


