Cam install question
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Elite HDF Member
Joined: Nov 2005
Posts: 3,654
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From: Mansfield Texas
Cam install question
Installing new cams with lifters on a 2014 103. Also removing the rockers to install the rockout inserts.
I can still use the stock push rods? Really do not want to mess with the adjustable push rods unless needed.
V&H branded 575 cam kit and V&H branded lifters.
I can still use the stock push rods? Really do not want to mess with the adjustable push rods unless needed.
V&H branded 575 cam kit and V&H branded lifters.
Elite HDF Member
Joined: Jul 2010
Posts: 3,830
Likes: 302
From: Lorain Ohio
It depends on the cam from what I've heard...some use a slightly dif lob size...I'm changing cams in my '15 103 over the winter an I plan on using the stock push rods with my tw 555 cam...I have to remove the gas tank an remove the rocker covers to do it...I might get the lock outs too. since you're already removing the rocker shafts reusing the stock push rods will be easy. A few years from now if I replace the lifters I might go with the adjustables so I don't have to remove the gas tank an rocker covers. the V&H website doesn't say anything about needing adj push rods either.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,091
Likes: 7,612
From: Poolville
It depends on the diameter of the base circle of the cam... if they are the same no problem. If the new cam has a smaller diameter then you will need the adjustables... To be able to achieve higher lobe lift some cams are ground with smaller base circles..
Road Warrior
Joined: May 2011
Posts: 1,956
Likes: 439
From: florida
IIRC that cam has a 40 IVC so regardless of base circle I would do a 0.030 hg while the top is off just for the compression bump. Plus if you cam swap down road you'll have the adjustables and compression that suits more cams.
Last edited by ntraindavefl; Oct 14, 2017 at 09:04 AM.
Intermediate
Joined: Oct 2017
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From: United States
Thread Starter
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Elite HDF Member
Joined: Nov 2005
Posts: 3,654
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From: Mansfield Texas
I am curious as to why you don't want to mess with adjustable push rods? IMO, the adjustable push rods are so much easier to work with than the stock ones. I do about 99% of the work on my bike and am often in the cam chest playing with different cams, If I had to take the tank and the rocker boxes off every time that I was in there, I would go crazy. Is part of the reason why you don't want to use the adjustable push rods due to you don't know how to adjust them? If that is the case, don't sweat it, it is so easy!
I am going to have the rockers off to install the RockOut bushings anyway so the cam swap seems to be the thing to do at this time if I am going to do it. With the setup I have now these cams were recommended
by the people I purchased the ThunderMax from and V&H. As far as adjusting valve train that is not a issue at all, . I was just going to save a few $$$ by using the stock push rods. V&H says these
are bolt in cams and will accept stock valve train parts, but I am replacing the lifters also....just wanted some opinions and I appreciate any further input.
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Elite HDF Member
Joined: Nov 2005
Posts: 3,654
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From: Mansfield Texas
Heads are not coming off...just the rockers to replace install the bushings.
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Seasoned HDF Member
Joined: Dec 2005
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From: poway
You really need to talk to VnH to see of the base circle is the same if you want to use the stock pushrods.. You can compare it to the stocker or if you can measure it, I can dig up a set of stock cams.. Still, I'd go adjustable anyway. Mainly due to some cams / lifters are quieter if you add a little the preload on the lifter.
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Road Master
Joined: Dec 2008
Posts: 872
Likes: 20
From: Niagara Falls Canada
u can get stock longer ones too
pushrods that look like the stock ones also come in longer lengths think they go up by .010 increments. not sure how far stock pushrods would take lifters too after a preload condition. Harley recommends 2.5 turns on adjustables, believe that is about .130 guys that build engines in chat usually say .140 after preload or 3 turns on adjustables.
