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Author Topic: Wethead valve lift  (Read 1639 times)

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bakon

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Wethead valve lift
« on: February 13, 2017, 07:52:05 PM »

Whats the max lift on the stock cvo 2014-16 wethead? any difference in the non water cooled?

Reason i ask is the Zippers 587 cam with .590 lift is listed as a bolt in for cvo heads.
http://www.zippersperformance.com/red-shift-587-cams.html
 Guess its not much of a stretch if HD lists their own 585 as bolt in also.
« Last Edit: February 13, 2017, 07:56:25 PM by bakon »
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Will

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Re: Wethead valve lift
« Reply #1 on: February 13, 2017, 10:13:56 PM »

Whats the max lift on the stock cvo 2014-16 wethead? any difference in the non water cooled?

Reason i ask is the Zippers 587 cam with .590 lift is listed as a bolt in for cvo heads.
http://www.zippersperformance.com/red-shift-587-cams.html
 Guess its not much of a stretch if HD lists their own 585 as bolt in also.

Same thing, thinking those springs are good for.600,  that's still a tad close for me.   Maybe one of the guys on here that does this for a living can validate this.     
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HD Street Performance

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Re: Wethead valve lift
« Reply #2 on: February 14, 2017, 03:43:33 PM »

.630 but not published at that by HD
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bakon

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Wethead valve lift
« Reply #3 on: February 14, 2017, 06:41:35 PM »

Thanks, and changing them to beehive? Or something else? A good idea still at .590 lift?

Following other post on changing guides. And out of round cylinders and of course lifters.

Lots of doubt on anything other than changing lifters. But while there...cam is easy change with adjustable pushrods, but then bump compression with a gasket and stay solid pushrods is not a big deal to me (like the work and done a few bb kits before) But then should I just pull trigger on Harley 117 kit with all the parts included (20 percent off sale makes this reasonable with the throttle body and lifters, Pistons and cylinders, plus gaskets included (cometic to replace head gasket) BUT what about talk of thin spigots and out of round cylinders and of course the Harley 259 liking more compression... what a circle of doubt.
« Last Edit: February 14, 2017, 06:50:31 PM by bakon »
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Will

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Re: Wethead valve lift
« Reply #4 on: February 15, 2017, 03:47:46 AM »

Are the stock springs that bad?
Are they huge overkill as far as pressure?
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MCE

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Re: Wethead valve lift
« Reply #5 on: February 17, 2017, 09:21:24 PM »

Thanks, and changing them to beehive? Or something else? A good idea still at .590 lift?

Following other post on changing guides. And out of round cylinders and of course lifters.

Lots of doubt on anything other than changing lifters. But while there...cam is easy change with adjustable pushrods, but then bump compression with a gasket and stay solid pushrods is not a big deal to me (like the work and done a few bb kits before) But then should I just pull trigger on Harley 117 kit with all the parts included (20 percent off sale makes this reasonable with the throttle body and lifters, Pistons and cylinders, plus gaskets included (cometic to replace head gasket) BUT what about talk of thin spigots and out of round cylinders and of course the Harley 259 liking more compression... what a circle of doubt.

Hell yeah. Beehives are perfectly fine at .600+ lift.
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HD Street Performance

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Re: Wethead valve lift
« Reply #6 on: February 17, 2017, 10:39:05 PM »

If put in at stock protrusion  (no valve work) the stock springs are at 155# seat beehives 175+#. At .350 the beehive starts to yield less pressure by virtue of a lower spring rate.
Becoming less of a fan of beehives after getting some heads back that had been run with .650 cams and finding the pressures had dropped and the springs were tipped.
Headed to conical and duals
« Last Edit: February 17, 2017, 11:25:11 PM by HD Street Performance »
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bakon

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Re: Wethead valve lift
« Reply #7 on: February 19, 2017, 05:12:02 PM »

I am new to headwork but my buddy seems to know his stuff. Talks me in circles on it. Not sure of what parts yet to use but he does use the AV&V brand in his work. (rebuilts from cars to bikes to two cylinder gas well pumps) sent me ten different part numbers and ideas in minutes when I asked if he just knew brand...

Been looking at zippers site for cam and compression ideas and they like to recommend dual springs on their hi lift cams and headwork also.
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Will
 

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