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Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

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Old 03-02-2006, 06:26 PM   #11
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Cam gear should be about

Cam gear should be about $50-60 shipped.

I think the CX/VX/HF TB's (the are all the same size... I was using a VX one on my HF engine before because I liked the cleaner look of the throttle body mounted MAP sensor) are around 40mm... damn small, I'll bust out my caliper when I get home and measure it.

I do know the other TB sizes off the top of my head:

D15/16 = 55-56mm
b18a / first gen b16a = 58mm
second gen b16a / b16b / b18b / b18c1 = 60mm
b18c5 = 62mm

If the CX/VX/HF one is really 40mm... that's a HUGE difference in area... as its Pi * Radius squared...

40mm diameter = 12.6 cm2
60mm diameter = 28.3 cm2

That's a cross sectional increase of 224%!!!
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Old 03-02-2006, 06:29 PM   #12
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It is hugely different, yep.

It is hugely different, yep. I have a d15b7 tb I'm going to use now until I can get all the cx stuff. The ports don't match well otherwise so I'll try and go all cx head/im/tb soon and get rid of the 56mm b7 stuff.
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Old 03-02-2006, 06:40 PM   #13
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I'm not sure, but is the CX

I'm not sure, but is the CX head the same casting as the HF?
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Old 03-02-2006, 06:48 PM   #14
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I believe so.

I believe so.
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Old 03-02-2006, 07:19 PM   #15
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I wonder if the cams are

I wonder if the cams are ground any differently. If I had one of each I could get them profiled. And on that subject, how bout a custom mileage grind?
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Old 03-02-2006, 07:20 PM   #16
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MetroMPG has mentioned

MetroMPG has mentioned someone who does custom cam grinds for metros that has an mpg set up.
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