Tick tock
#161
10-21-2023 | 03:39 PM
Thread Starter
|
Club Member
Joined: Dec 2014
Posts: 10,546
Likes: 3,547
From: SWFL
Got a caliper? If you could, measure rocker shaft hole to rocker shaft hole on the ones you removed.. Also measure from the hole to the bottom surface..
The following users liked this post:
Max Headflow (10-21-2023)
#162
10-21-2023 | 04:09 PM
Seasoned HDF Member
Joined: Mar 2010
Posts: 18,473
Likes: 5,570
From: Poolville
You JUST told me to leave it alone! 
Now you want me to add more preload? You guys love F’ing with me!
I was thinking about picking up a set of SE tapered pushrods when I put the new rockers in the front. They look like a nicely designed set. The FuelMoto ones are getting a little beaten up from the repeated adjustment. Maybe when I do that.
what will the additional preload buy me?
Now you want me to add more preload? You guys love F’ing with me!I was thinking about picking up a set of SE tapered pushrods when I put the new rockers in the front. They look like a nicely designed set. The FuelMoto ones are getting a little beaten up from the repeated adjustment. Maybe when I do that.
what will the additional preload buy me?
Additional preload helps to maintain a reasonable preload as the motor expands from heat
Last edited by 98hotrodfatboy; 10-21-2023 at 05:07 PM.
The following users liked this post:
Mchad (10-21-2023)
#163
10-21-2023 | 04:19 PM
Seasoned HDF Member
Joined: Mar 2010
Posts: 18,473
Likes: 5,570
From: Poolville
I just measured
stock push rods @.375"
S&S push rods @.440"
Fuel Moto push rods @.435
Both S&S and Fuel Moto are very good push rods.. why would you want to go to a tapered pushrod.. Do you know what the diameter tapers down to? Which most likely would cause more flex especially with your build with the 9F cams.. I'm sure you have high spring seat pressure.. Doesn't make sense to me..
If anyone has a set of the SE tapered adjustable push rods, if you could measure at the base of the coupler for the push rod and at the top I'd like to know what the taper and diameter is.. Thank you..
Whatever you do at least stick with 32 TPI pushrods
I also just measured the ball ends and S&S pushrods are the same as stock for the diameter of the ball ends which means that the radius of the ball end is most likely as well.. The fuel motor pushrods have a different diameter on their ball ends by .010" smaller on the top and .020" of smaller on the bottom. I would think that would make for a different radii and contact pressure with the lifter.. I don't know if it makes a difference but I would like to see more material contacting each other when it comes to the ball end of the push rod and the lifter.. just a note..
stock push rods @.375"
S&S push rods @.440"
Fuel Moto push rods @.435
Both S&S and Fuel Moto are very good push rods.. why would you want to go to a tapered pushrod.. Do you know what the diameter tapers down to? Which most likely would cause more flex especially with your build with the 9F cams.. I'm sure you have high spring seat pressure.. Doesn't make sense to me..
If anyone has a set of the SE tapered adjustable push rods, if you could measure at the base of the coupler for the push rod and at the top I'd like to know what the taper and diameter is.. Thank you..
Whatever you do at least stick with 32 TPI pushrods
I also just measured the ball ends and S&S pushrods are the same as stock for the diameter of the ball ends which means that the radius of the ball end is most likely as well.. The fuel motor pushrods have a different diameter on their ball ends by .010" smaller on the top and .020" of smaller on the bottom. I would think that would make for a different radii and contact pressure with the lifter.. I don't know if it makes a difference but I would like to see more material contacting each other when it comes to the ball end of the push rod and the lifter.. just a note..
Last edited by 98hotrodfatboy; 10-21-2023 at 04:32 PM.
#164
10-21-2023 | 04:30 PM
HDF Community Team
Joined: Jun 2006
Posts: 12,282
Likes: 2,249
From: san antonio
#165
10-21-2023 | 04:39 PM
Seasoned HDF Member
Joined: Mar 2010
Posts: 18,473
Likes: 5,570
From: Poolville
I think it was pretty clear in the pictures that he posted that the rockers put the pushrods out of center causing the whole incident... Which by the way can only be changed by the machining of the rocker plates.. Unless Vulcan used Tiawan Teds or Chiwanese rockers..
Last edited by 98hotrodfatboy; 10-21-2023 at 04:47 PM.
#166
10-21-2023 | 04:51 PM
Seasoned HDF Member
Joined: Dec 2005
Posts: 17,466
Likes: 6,195
From: poway
I don't think anybody's changed more cams than I have in my personal bikes.. Between the three bikes probably 15 different cams easily and countless numbers of lifters and adjustments... I'm still using the same old push rods but if you want to get new ones that's totally up to you.. I don't think there's anything beat up with yours unless you abused them trying to tighten them with improperly fitting wrenches, they should be fine.. But whatever makes you happy..
Additional preload helps to maintain a reasonable preload as the motor expands from heat .
Additional preload helps to maintain a reasonable preload as the motor expands from heat .
You used the same set of pushrods on 3 bikes?
#168
10-21-2023 | 08:23 PM
Road Warrior
Joined: May 2011
Posts: 1,885
Likes: 366
From: florida
The following users liked this post:
Max Headflow (10-21-2023)
#169
10-21-2023 | 08:25 PM
Seasoned HDF Member
Joined: Mar 2010
Posts: 18,473
Likes: 5,570
From: Poolville
#170
10-21-2023 | 08:41 PM
Seasoned HDF Member
Joined: Dec 2005
Posts: 17,466
Likes: 6,195
From: poway
The following 2 users liked this post by Max Headflow:
98hotrodfatboy (10-21-2023),
porkster (10-24-2023)