4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

new heads

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Old 06-12-2016, 07:16 AM
  #1  
chipss36
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Default new heads

getting close to running this baby, stage 2 mhs cams, ported heads, headers, and some other support stuff, cant wait to hear it run.
Attached Thumbnails new heads-13265938_10209669277274418_8936137496260310115_n.jpg   new heads-13245488_10209669281314519_5543828035009938202_n.jpg   new heads-13321996_10209754335800828_608633085842668459_n.jpg   new heads-13394070_10209772616217827_3350352921680824760_n.jpg  
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Old 06-12-2016, 12:41 PM
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Camster
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Looking good.
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Old 06-14-2016, 06:07 PM
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WJL
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Is that a 1998 NPI motor?
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Old 06-14-2016, 06:44 PM
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Soldier GT
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That's gonna be a nice bump in HP!
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Old 06-15-2016, 11:35 AM
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chipss36
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Default mhs?

So got to the point to change oil, filters, and new coolant. ...
Coolent poured directly into crank case, via what appears to be a hole drilled from the chain tensioner oil feed directly into the water jacket under the thermostat, mhs needs to do better than this....took 3 days to find the problem.
http://youtu.be/TOt57NdoWsU
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Old 06-15-2016, 11:39 AM
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chipss36
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Originally Posted by WJL
Is that a 1998 NPI motor?
Dont know ? Came in A 2001 gt
But do know he did a motor swap
So not sure.
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Old 06-15-2016, 03:43 PM
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WJL
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I only brought it up because your oil filler tube is on the left side of the motor, same as a 1998 (NPI motor), i think they switched in 99 (PI motor) and put it on the right side, could be wrong.

If it is the NPI like Soldier said you will get a nice bump in HP due to the increased compression ratio and better air flow, good luck
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Old 06-15-2016, 06:20 PM
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WhiteFoxGT
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Originally Posted by chipss36
So got to the point to change oil, filters, and new coolant. ...
Coolent poured directly into crank case, via what appears to be a hole drilled from the chain tensioner oil feed directly into the water jacket under the thermostat, mhs needs to do better than this....took 3 days to find the problem.
http://youtu.be/TOt57NdoWsU
holy crap....id go ballistic.

been in that boat before, will they pay you for new head bolts and gaskets now?
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Old 06-15-2016, 06:28 PM
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WJL
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Wow that's crazy
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Old 06-16-2016, 08:35 AM
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Out of 50 years of building, this was a first, I did see other issues with the heads, one was said cleaned and inspected followers.
One was scored, and the wheel grinds....so I put gt 500 followers in, second was china valve seals, I just think usa made felpro belongs in a perfomance head, to top all this off, I spent a month getting a gasket match perfect, and cleaning up all ports.
The more I think of this the more pissed I get, ya what about . Bolts, gaskets, fluids, and cleaning products I need to get this right, and my "free labor".
Still in shock, no excuse to send a head out with oil/coolent mixing.....just in shock.
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