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Mackie 590/103"?

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Old Jul 5, 2015 | 12:52 PM
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Default Mackie 590/103"?
2013 103" WideGlide.. What compression and how much flow should the heads have? It is a barhopper one up bike..Thanks
 
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Old Jul 5, 2015 | 04:26 PM
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I just sold a set of 598's and in a 103" I'd run 11+-1 comp and I 'd want 290+ @.600 valve lift. But thats just me. Others may have different ideas.
 
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Old Jul 5, 2015 | 09:28 PM
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Not 100% sure but I don't think those stock heads will accept a .590 lift cam. Really pushin it. Check with your local head porter about the valve to valve clearance.
 
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Old Jul 6, 2015 | 11:45 AM
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Originally Posted by 98hotrodfatboy
Not 100% sure but I don't think those stock heads will accept a .590 lift cam. Really pushin it. Check with your local head porter about the valve to valve clearance.
No worries; the OEM heads will accommodate cam lift up to .600" but always wise to check valve to piston and valve to valve at TDC.
 
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Old Jul 6, 2015 | 03:58 PM
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The heads will be getting some work or replaced with a CNC set. I was just wondering how much was needed.
 
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Old Jul 6, 2015 | 04:56 PM
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You do know 590's will not fit no matter what you do with the heads, right?
 
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Old Jul 11, 2015 | 08:30 AM
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Originally Posted by qtrracer
You do know 590's will not fit no matter what you do with the heads, right?
why won't they fit ???
 
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Old Jul 11, 2015 | 10:42 AM
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Haven't looked at DME cams for while but the last time I looked the 590s were not available for the 07 and up models. Maybe they are now?
 
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Old Jul 11, 2015 | 11:07 AM
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Originally Posted by djl
Haven't looked at DME cams for while but the last time I looked the 590s were not available for the 07 and up models. Maybe they are now?
They are called 575L's same event timing as 590's, slightly lower lift , 1" journals. Had a set. He started making them 3 or 4 years ago.
 
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