EQ heads for 5.9 magnum
#2507910
06/13/18 01:56 PM
06/13/18 01:56 PM
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Joined: Aug 2005
Posts: 1,382 Az
69hemibeep
OP
pro stock
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OP
pro stock
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Any problems out of the box one should know about?
1969 Hemi Roadrunner 2nd owner
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Re: EQ heads for 5.9 magnum
[Re: 69hemibeep]
#2507931
06/13/18 02:29 PM
06/13/18 02:29 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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There do not seem to be many first person bad experiences with the EngineQuest heads. There are a lot of rumors floating around and many will show up here, I am sure.
Hughes Engines is on record as saying they need valve guides replaced. I don't remember anyone else saying this. But, checking guides and valve job is a good place to start with any new head.
Be aware that there is a Chinese knockoff that some try to foist on the public.
Brian at IMM (Board name: OU812) is who I would call because he sells them and installs them in customer engines.
Be aware that the exhaust flow is relatively better than the intake flow so the camshaft should be a single pattern or even have smaller exhaust lobe than the intake.
R.
Last edited by dogdays; 06/13/18 02:32 PM.
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Re: EQ heads for 5.9 magnum
[Re: 69hemibeep]
#2508318
06/14/18 10:56 AM
06/14/18 10:56 AM
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Joined: Jun 2008
Posts: 1,822 Colorado
denfireguy
top fuel
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top fuel
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Colorado
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I have them on a 5.2L Magnum. Mine were done by Clearwater Cylinder in Florida. 2.02 intakes. Around 8K miles on them with no problems. A local Mopar specialty shop has them here in CO http://moparmadness.net/And of course, Hughes has them. Craig
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
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Re: EQ heads for 5.9 magnum
[Re: denfireguy]
#2508328
06/14/18 11:16 AM
06/14/18 11:16 AM
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Joined: Aug 2005
Posts: 1,382 Az
69hemibeep
OP
pro stock
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OP
pro stock
Joined: Aug 2005
Posts: 1,382
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So guide clearance and seating of the valves should be checked
1969 Hemi Roadrunner 2nd owner
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Re: EQ heads for 5.9 magnum
[Re: dogdays]
#2508488
06/14/18 05:29 PM
06/14/18 05:29 PM
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Joined: Aug 2005
Posts: 1,382 Az
69hemibeep
OP
pro stock
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OP
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Pretty basically, unless you buy the cylinder head from a cylinder head builder such as buying a Sidewinder from Todd Marsh, you should look at the valve guide clearance. All sorts of aftermarket heads have come out of the box with too tight a valve stem clearance. Once you have the heads disassembled it is a simple matter to check that the valves are seating and that the valve job is optimized. Again if an engine builder assembles your heads you are most likely OK. But, I have seen factory OEM cylinder heads with absolutely horrible valve jobs. Not that they didn't seal. I was shocked to see a one-angle valve job with no effort made to blend either side.
There are probably just as many cylinder heads out there that came out of the box and were bolted on without any additional prep work. So it just boils down to, "Do ya feel lucky, punk? Do ya?"
R. I know my limitations!
Last edited by 69hemibeep; 06/14/18 05:29 PM.
1969 Hemi Roadrunner 2nd owner
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Re: EQ heads for 5.9 magnum
[Re: 69hemibeep]
#2508580
06/14/18 10:20 PM
06/14/18 10:20 PM
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Joined: Aug 2005
Posts: 1,382 Az
69hemibeep
OP
pro stock
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OP
pro stock
Joined: Aug 2005
Posts: 1,382
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OK I ordered some heads and going to my friendly machinist when they arrive
1969 Hemi Roadrunner 2nd owner
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