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Bummer of a leakdown test

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Bummer of a leakdown test

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Old 06-18-2003, 06:37 PM
  #1  
horatio102
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Default Bummer of a leakdown test

25% Loss on cyl 6 going up through the intake.

So new heads it is! And while I'm at it new intake manifold, throttle body, and egr spacer. I also need a new intake as I just noticed my stock filterbox is broken on the bad side.

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Old 06-18-2003, 07:34 PM
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WhiteHawk
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Default Bummer of a leakdown test

....you should be happy....it's a perfect excuse!!
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Old 06-19-2003, 08:56 AM
  #3  
horatio102
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Default Bummer of a leakdown test

That it is...

They yanked the heads off today - #6 was scored at the bottom and the valves were bunged up.

So... .030" over bore, forged pistons, F303 cam, aluminum heads, new intake manifold, 70mm TB&EGR, Mac CAI, 75-ish (haven't picked one out yet) MAF, balanced and stuffed back in.

Already have Mac headers, no cats, H-pipe, and Flowmasters (2-chambers iirc), so I'm hoping for the best.


Funny part is that even with #6 screwed up it was still putting over 200 hp to the rear wheels.
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Old 06-19-2003, 01:04 PM
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Default Bummer of a leakdown test



Horatio,</P>


How much is all that costing you? and where are you located?</P>
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Old 06-19-2003, 05:38 PM
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horatio102
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Default Bummer of a leakdown test

Estimate is about five large. But then there's always ebay for the leftover stuff. A couple hundred bucks and the heads are good as new, etc.

I'm up in Bellingham, WA right by the border.

The car should be a hoot when it is done.
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Old 06-19-2003, 08:34 PM
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lloydchristmas
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Sounds like it should be a f****n rocket!!!
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Old 06-20-2003, 03:38 AM
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horatio102
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Default Bummer of a leakdown test

Originally Posted by lloydchristmas
Sounds like it should be a f****n rocket!!!

That's what I' m hoping for.
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