EVO All Evo Model Discussion

pushrod question

Thread Tools
 
Search this Thread
 
  #1  
Old 02-23-2019, 07:00 AM
g1625s's Avatar
g1625s
g1625s is offline
Advanced
Thread Starter
Join Date: Sep 2016
Location: Port Crane, NY
Posts: 93
Received 5 Likes on 5 Posts
Default pushrod question

So I've got a cam and all the associated stuff incoming. I got a rocker box seal kit, as my intent was to reuse the factory pushrods. This would also give me the opportunity to polish the rocker boxes while they're off. However, a buddy of mine just offered me some s&s quickee pushrods, new in the package, for a hundred bucks. Seems like a pretty good deal, but I understand there are fitment issues with the oem pushrod covers. Is this true? Is it just a matter of a little grinding here and there? If I have to spring for aftermarket covers, that will be a deal breaker as it's just not in the budget. I'm intrigued though because of the ability to set a little more preload vs oem. I ordered a set of the Johnson lifters, for what that's worth. Cam is EV13. Thanks for any input!
 
  #2  
Old 02-23-2019, 07:29 AM
0maha's Avatar
0maha
0maha is online now
Seasoned HDF Member
Join Date: Nov 2012
Location: Omaha
Posts: 6,513
Received 4,668 Likes on 1,660 Posts
Default

The stock tubes will work with the quickies.
 
  #3  
Old 02-23-2019, 07:30 AM
bentparts's Avatar
bentparts
bentparts is offline
Tourer
Join Date: Apr 2009
Location: Jersey
Posts: 461
Received 117 Likes on 67 Posts
Default

I use the S+S quickie pushrods with the Johnson lifters, although I have a higher lift cam. It's recommended to trim about 3/8ths of an inch off the inner tube to prevent rubbing with the S+S quickies. Easy using a simple tubing cutter, then chamfer the edges.. I did, no rubbing and they work great. BTW, there's some confusion about setting the pre load on those Johnson lifters depending what kind your using, I set mine at 2 full turns pre load and they are quiet and work great.
 
  #4  
Old 02-23-2019, 07:36 AM
Hey Man's Avatar
Hey Man
Hey Man is offline
Seasoned HDF Member
Join Date: Jun 2015
Location: West Central FL
Posts: 9,785
Received 7,004 Likes on 2,817 Posts
Default

Adjustable or non adjustible push rods don't cause fitment issues with the rocker boxes. The lift of your cam is what can cause rocker arms to have interferance with the boxes I'd think. I installed the EV 27 and used S&S Quickies so I would have to remove the heads and I had no clearance problems. The more agressive the cam the more it takes to get it to work right.
 
  #5  
Old 02-23-2019, 07:37 AM
g1625s's Avatar
g1625s
g1625s is offline
Advanced
Thread Starter
Join Date: Sep 2016
Location: Port Crane, NY
Posts: 93
Received 5 Likes on 5 Posts
Default

Thanks men! I think I'll pick them up
 
  #6  
Old 02-23-2019, 07:42 AM
Schex's Avatar
Schex
Schex is offline
Supporter
Join Date: Apr 2011
Location: SE Louisiana
Posts: 5,201
Received 6,816 Likes on 1,760 Posts
Default

The pushrods may rub on the top edges, I always ream them out some, about a 1/2" deep with a carbide bit in a die grinder.
Some recommend a 5/8's drill bit, I found this picture, that's reamed way too much in my opinion, I'd say ream them about half the thickness between the two in this picture.
 
The following users liked this post:
Kingglide549 (02-23-2019)
  #7  
Old 02-23-2019, 07:47 AM
g1625s's Avatar
g1625s
g1625s is offline
Advanced
Thread Starter
Join Date: Sep 2016
Location: Port Crane, NY
Posts: 93
Received 5 Likes on 5 Posts
Default

So 3/8 inch off the inner tube and ream the top per the above post. That doesn't seem like too much surgery. I haven't seen my lifters yet, going to start tearing down today, but with 45k on the ol gal, it seems like good insurance while i'm in there. Also got cam bearing, shims and picked up a new breather gear from the dealer.
 
  #8  
Old 02-23-2019, 08:14 AM
texashillcountry's Avatar
texashillcountry
texashillcountry is offline
Dirt don't hurt

Join Date: Jan 2011
Location: Haslet Texas
Posts: 20,999
Likes: 0
Received 4,317 Likes on 1,946 Posts
Default

Unless you're going with a high lift cam then I'd suggest you stick with the OEM pushrods...JMO
Unless those pushrods are EZ-install then you will still need to pull your rocker boxes.
 
  #9  
Old 02-23-2019, 08:21 AM
g1625s's Avatar
g1625s
g1625s is offline
Advanced
Thread Starter
Join Date: Sep 2016
Location: Port Crane, NY
Posts: 93
Received 5 Likes on 5 Posts
Default

I plan to pull the rocker boxes either way so that I can polish them. I'm leaning toward this purchase because I've read that even mild cams, like what I'm getting, can create a lot of valvetrain noise when coupled with stock pushrods.
 
  #10  
Old 02-23-2019, 08:59 AM
Dan89FLSTC's Avatar
Dan89FLSTC
Dan89FLSTC is offline
Seasoned HDF Member

Join Date: May 2008
Location: South Carolina
Posts: 17,937
Received 8,499 Likes on 4,612 Posts
Default

If you are on a budget and looking to avoid unnecessary costs, forget the adjustable pushrods, especially since you are ok with removing the rocker boxes.
Solid pushrods are not going to make more noise than adjustables, if anything, they are quieter because they are lighter.
 


Quick Reply: pushrod question



All times are GMT -5. The time now is 06:35 AM.