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Old 02-20-2013, 07:51 AM
BVP BVP is offline
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Exhaust Manifold Leaks

Are these leaks large enough to worry about, or is this a normal amount of leakage before the manifolds heat up and seal to the heads? #8 looks like it's throwing soot onto the firewall. Does anyone have any ideas on how to narrow down if one port is leaking worse than the others? I don't think it's the manifold to up-pipe connection, and the y-pipe bellows and firewall insulation look clean.
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Last edited by BVP; 02-20-2013 at 10:28 AM.
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Old 02-20-2013, 07:53 AM
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You're losing boost pressure. I'd pull the manifolds and install manifold gaskets.
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Old 02-20-2013, 04:11 PM
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Yeah they probably won't seal 100% even when it's warmed up. Those are leaking a little more than I like to see.

I just did mine too but I replaced the manifolds also. They're not too much
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Old 02-21-2013, 08:21 AM
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Thanks... Do any of ya'll happen to know the PNs for the bolts, spacers, gaskets, and the manifold-to-u-pipe bolts? Is that all I'll need, or do you think the manifolds themselves are warped past saving?

All I've found is this: Exhaust manifold gaskets: 6c3z 9448

Last edited by BVP; 02-21-2013 at 08:27 AM.
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Old 02-21-2013, 09:20 AM
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Here's the up pipe bolt and nut part numbers. Not sure on the manifold bolts. The manifolds will be fine.
W300013 (Ford Hardware PN)---------------------------------Y-Pipe Bolt (Long 4 Required)*

W300006 (Ford Hardware PN)---------------------------------Y-Pipe Bolt (Short 2 Required)*

W300051 (Ford Hardware PN)---------------------------------Y-Pipe nut (6 Required)*
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