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just trying to get an idea of compression and efficiency of this engine. Whats everyone showing in vac at idle. Assuming your between 800 -1000 rpms.

first turbo car, up on jacks still and not moving. cant wait to put real load and see what she does. hard to spool it standing still.
 

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I think mine is 15 vac at idle. Stock long lock with ecam
 

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My notch idled in drive @ 825-850 RPM with 12-14in . The combo was an f303, TFS Track Heat Heads, Eddy performer intake and 1.7rr's.
 

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Mine is around 15-16 at idle...stock block and cam...TF-TW 170 heads,TF street heat intake...
 

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mine is always 13-14 with a custom freezy cam...
 

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9-10 inches. F303, TFS heads, Victor EFI intake, stock shortblock. Last leak-down test showed 5-7% in all cylinders.
 

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4.6 4 valve stock 98 cams 20-21, 900 rpm.

It will vary with cams.

I only use vacuum to tell if something is "wrong" if normally the car runs at 20 and all of a sudden its around 14 then something is wrong.
 

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12 in. when it's cold and 14-15 when it's warm. tfs stage 1 cam.
 

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12ish with an FTI Cam
 
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